The HPS vs LED grow light matchup is a clash of the titans. This is by far the biggest downside that needs to be considered. If you have any information please, Energy Service Companies (ESCO)/Contractors. By far the most efficient HID variant is the Low Pressure Sodium lamp whose source efficiency can range from 60-190 lumens/watt. The up-front costs of an LED lighting project are typically greater than most of the alternatives. LPS lamps emit a monochromatic yellow light which very much inhibits color vision at night. Broken bulbs release a small amount of toxic mercury as a gas and the rest is contained in the glass itself. You’ll note the light intensity hardly fades at all on the Spider Farmer compared to the older boxy purple LED grow lights. The ultimate purpose of the device is to emit light, not heat. Do you plan to undertake that long-postponed high pressure sodium to LED conversion for the lighting in your home or office? High pressure sodium bulbs may flicker and/or cycle on and off as the bulb reaches the end of its useful life. Any defective LED bulb will usually fail within this time. In particular, they have been known to start fires in the event that the lamp is broken and the sodium metal is exposed. LEDs are very efficient relative to every lighting type on the market. Foot Candle ratings are very application specific and vary case by case so it is difficult to say if LPS/HPS or LED would be better performing without the specifics of the particular situation. LED lamps produce light of a much higher quality, as opposed to the dim yellow one generated by HPS. LPS and HPS still retain these advantages over most conventional bulbs but they lose on all three counts to LEDs. HPS bulbs typically emit 80% of their original rated output at the end of life (around 24,000 hours). Much like fluorescent lights, modern LED lights are a wonderful solution for gymnasiums, warehouses, schools and commercial buildings. LPS and HPS lights are much more efficient as well as longer lasting than incandescent bulbs, many fluorescent bulbs, and most high intensity discharge lamps in general. If we had included air conditioning, it would make LED grow light vs HPS lighting even more cost effective in less time. Typical lifespan values for an HPS bulb are around 24,000 hours. It can take up to 10 minutes to get the LPS or HPS lamp up to its normal operating temperature. Watch time lapse footage with real results. The difference is that sodium vapor lights were the most efficient technology of the 1970s while LEDs are the modern day equivalent. In other words, if you’re not looking for a warm deep yellow light, you’re going to have to use something besides Low or High Pressure Sodium to achieve it. They are also adaptable for large public areas (which require powerful, efficient lights over a large area), road lighting (which offer significant color advantages over low and high pressure sodium lights), and parking lots. Park, No.2-3 South Road, They lose out to LEDs principally because their system efficiency is much lower (<30 lumens/watt) due to all of the losses associated with omnidirectional light output and the need to redirect it to a desired area. All in all this makes the applications in which LEDs can be used extremely diverse. Between fluorescent, LEDs, and high-pressure sodium (HPS), the great wide world of grow lights can get confusing. In the beginning, all we had was the standard, incandescent light bulb. Example: High Pressure Sodium (HPS) lights have only 3% blue light in a their grow light spectrum so are not used for the early vegging cycle as this would result in stretched plants and low productivity later on. The more lumens a light bulb produces, the brighter it shines. In some areas (e.g. LEDs are extremely energy efficient relative to every other commercially available lighting technology. Lumen Comparison Chart. The Grow Closet. Incandescent bulbs and CFL bulbs are more easily broken than LEDs, which increases their cost of use. Additionally, HPS lamps pose a potential fire hazard, especially when you dispose of them. Lumen maintenance at the end of life still is excellent at around 80%.” LPS lights last slightly shorter periods of time (typically failing around 18,000 hours of operation). Both low and high pressure sodium lights require ignition which is typically provided by a voltage pulse or a third electrode (an additional metal part) internal to the bulb. Kind LED say you can. Additionally, there are serious waste disposal issues with sodium lamps. Both Low and High Pressure Sodium lights exhibit a short delay when turning on because they need to be ignited before they operate at steady state. This is by far the biggest downside that needs to be considered. 100 Degrees Celsius. The light doesn’t arrive at full power until the salts are fully evaporated into plasma (which can sometimes take up to 10 minutes). Because of the differences in HPS and LED technologies, you’ll have to make a series of calculations if you want to find a comparable LED wall pack to replace your HPS fixture. Low and High Pressure Sodium bulbs are long lasting but will still require replacement several times in addition to the labor cost to monitor and replace aging or expired components all within the lifespan of a single LED. If you’re interested in the technical details of how an LED works you can read more about it here. LED lighting has relatively high initial costs and low lifetime costs. Low and High Pressure Sodium lights are very cheap to purchase as well as fairly cheap to maintain. Commercial Lighting, The mercury inside the bulbs is a hazardous material that can present a waste disposal issue at the end of light’s life. The need for reflection and redirection of light means that the output is much less efficient for omnidirectional lights due to losses than it would be for the same light if it were directional by its nature. Gongming, Bao’an District, HID lights can be manually dimmed through the use of different electric or magnetic ballast but the process changes the voltage input to the light and can consequently alter the light characteristics. As mentioned, the operating life of a typical Metal Halide bulb … Is LED more efficient than HPS? The downside is that there are very few options outside the narrow range to choose from. You can, about the impact of directional lighting by learning about  a measurement called “, We couldn’t find any objective data on fluorescent bulb performance in high temperature situations. Since then they have gradually expanded their applications to include traffic lights, lighted signs, and more recently, indoor and outdoor lighting. When comparing both technologies, always compare light levels of the entire grow and not just fixture to fixture. You can get in touch with us 24 hours a day, 7 days a week. This is usually overcome with LEDs by covering the light with a visor or facing the light downward towards the ground. LEDs are very efficient relative to every lighting type on the market. We couldn’t find any objective data on fluorescent bulb performance in high temperature situations. The first practical use of LEDs was in circuit boards for computers. So, if you need help with your high pressure sodium to LED conversion, MastLED is here to help. Typical source efficiency ranges 37 and 120 lumens/watt. Not too long ago, Access Fixtures was contacted by a property owner seeking to upgrade her outdated 250w, 2100K, high pressure sodium (HPS) wall packs to LED wall packs. Now we have compact fluorescent lamps (CFL) and light emitting diodes or LED for short. Even so, they typically aren’t produced below roughly a centimeter in width and so they do not compare to the small size and robust build of a solid state light like LED. (a device that converts visible light into electrical current). In particular, LED lights are relatively expensive. Although sodium vapor lighting beats virtually every other technology in terms of energy efficiency (which is why it was chosen to illuminate the streets of so many cities), it loses out to LEDs. The major payback comes primarily from reduced maintenance costs over time (dependent on labor costs) and secondarily from energy efficiency improvements (dependent on electricity costs). Low and High Pressure sodium lights produce a very narrow spectrum of light (particularly LPS lights). Diodes are generally made from semi-conductive materials such as silicon or selenium - solid state substances that conduct electricity in some circumstances and not in others (e.g. That said, HPS lights in particular maintain fairly good light output (roughly 80%) at their typical end-of-life (24,000 operating hours). Thankfully, the market has changed a lot since due to their high power consumption, short lifespan, and environmental drawbacks. LED lifespan can be greater than 100,000 hours (more than four times that of LPS or HPS). That simply does not exist in the marketplace. It is only recently with the advent of affordable and prevalent LED lighting that they are being consistently surpassed in terms of energy efficiency and lifespan. lifespan) they are drastically inferior to LEDs. Light output efficiency was 33% higher with LED than HPS (2.25 micromoles per joule for the SolarSystem 1100 LED and 1.7 for the Gavita HPS). . LED light costs are high but variable depending on the specifications. Starting is relatively simple with small tubes but can require significant voltage with larger lights. Typical source efficiency ranges 37 and 120 lumens/watt. As you can see, LED lights use far less energy to produce light of a much better quality. are notorious for having the worst CRI values on the market. Sodium vapor lighting has been around since the middle of the 20th century (in commercial production since the 1930s) and it generally represents a high efficiency way to provide lighting over a vast area. Because LED lights typically operate with multiple light emitters in a single luminaire the loss of one or two diodes does not mean failure of the entire luminaire.. Low and High Pressure Sodium lights can fail in a number of different ways. Lastly, HPS and LPS lights are monochromatic, so they can mess with your color vision if you look at them for an extended period of time. Color rendering for High Pressure Sodium lights is slightly improved (HPS lights emit a yellow to white light) but it is still much worse than other types of lamps. LED efficiency drops as current increases. Low pressure sodium vapor (LPS) lights are a specific type of gas-discharge light (also known as a high intensity discharge, HID or arc light). The bulb principally contains solid sodium metal inside a borosilicate glass tube that vaporizes once the lamp is turned on. 70 watt HPS = 40 watt LED; 100 watt HPS = 50-60 watt LED; 150 watt HPS = 80-90 watt LED; 250 watt HPS = 90-125 watt LED; As you can see, LED lights use far less energy to produce light of a much better quality. As indicated by the name, “high” pressure sodium vapor lights operate at a higher internal pressure. I hope by the time this grow is over we both will know what is best for our growing situation. The only real potential downside to this is when LEDs are used for outdoor lighting in wintery conditions. See the chart below to see an example of a LED spectral chart: To get you more familiar with LED grow light spectral charts for different phases of growth, below we have the HLG 300L Rspec (flowering phase/full cycle) and Bspec (vegetative phase) so you can compare them. Technically that’s diodes with an ”s” because there are many diodes together forming an LED light. The overall performance drop is relatively low over time with around 80% output being normal near the end of life. Mastled Lighting Technology CO LTD specializes in researching, manufacturing and customization of LED indoor and outdoor light fixtures since 2008, with monthly output of over 50,000 lamps. You can read more about the impact of directional lighting by learning about  a measurement called “useful lumens” or “system efficiency.”. This is a large system inefficiency because at least half of the light needs to be reflected and redirected to the desired area being illuminated. Disadvantages of High Pressure Sodium. HID vs. Here are 5 truths about growing bigger yields with LED vs HPS grow lights. Comparing 90w LED UFO with different configurations to a 400w HPS and other factors. There are several reasons for this to include the fact they waste very little energy in the form of infrared radiation (much different than most conventional lights to include fluorescent lights), and they emit light directionally (over 180 degrees versus 360 degrees which means there are far fewer losses from the need to redirect or reflect light). Also, LEDs waste less energy producing waste heat, resulting in longer life and the best energy efficiency. LEDs have faster switching (no warm-up or cool-down period). HPS lights are more standardized among manufacturers, making it a bit easier to comparison shop. Can you really increase yields and grow quality cannabis with energy-saving lights? Consistency. Generally they exhibit an end-of-life phenomenon known as cycling where the lamp goes on and off without human input prior to eventually failing entirely. As for overall chemical profile: Total THC percentage was over 24% higher under LED. Since then they have gradually expanded their applications to include traffic lights, lighted signs, and more recently, indoor and outdoor lighting. at certain voltages, current levels, or light intensities). According to American Electric Lighting, “HPS lamps still generate 90% of their initial light output at the midpoint of their life span. Needless to say, converting from HPS to LED is definitely something you should consider for your home or office. LEDs emit very little forward heat. LED equivalent wattages to traditional light sources can only be approximate, as they will vary depending on the colour temperature and quality of the bulbs being compared. Comparison Chart HPS vs. Where LEDs really shine, however, is in their system efficiency (the amount of light that actually reaches the target area after all losses are accounted for). Parking Lot Lighting, I cannot stress enough that there is no such thing as a 1-for-1 replacement of HPS by LED! Before ing grow lights led versus hps color spectral impact area roadway hid to led equivalency lumens to watts conversion chart for Hid To Led Conversion Chart 14 TableHow Many Lumens For A 400watt Metal Halide And What Is The Led EquivalentHow To Find Led Equivalent Wall Packs Replacing HidsHid To Led Conversion Chart 14… Read More » We are going to tackle the question which light bulb type reigns supreme? High Pressure Sodium lights have excellent lifespan as well (although not as good as LED) which is why they have traditionally been used for outdoor street lighting in municipalities where energy efficiency is at a premium. Where LEDs really shine, however, is in their system efficiency (the amount of light that actually reaches the target area after all losses are accounted for). In other words, if you’re not looking for a warm deep yellow light, you’re going to have to use something besides Low or High Pressure Sodium to achieve it. Problems with the starter and/or improper matching of a starter and an HPS lamp may cause cycling even though the starter is otherwise working properly as the lamp is continually trying to light itself. High pressure sodium vapor (HPS) lights, similar to LPS lights, are a specific type of gas-discharge light (also known as a high intensity discharge, HID or arc light). When current passes through the semiconductor material the device emits visible light. Low and High Pressure Sodium lights require a warm-up time that varies depending on the light. We specialize in researching, manufacturing, and customization of LED light fixtures. The principal difference between low and high pressure sodium lights is the operating pressure inside the lamp. Most values for LED system efficiency fall above 50 lumens/watt. Shenzhen China. These include the following: Considering the upside you might think that LED lights are a no-brainer. Low and High Pressure Sodium bulbs are fragile relative to LEDs. Correlated Color Temperature (read more here). LPS lamps emit a monochromatic yellow light which very much inhibits color vision at night. Low and High Pressure Sodium lights are well-known for their warm yellow glow (CCT values around 2200K). For this reason they are very efficient. Generally they are cheap compared to LEDs ($5-$10 for a 100W incandescent-equivalent LPS or HPS bulb). Although. Red is the ideal spectrum for stem growth, flowering and fruiting. LEDs produce a very narrow spectrum of visible light without the losses to irrelevant radiation types (IR, UV) or heat associated with conventional lighting, meaning that most of the energy consumed by the light source is converted directly to visible light. So, to illustrate our point, let’s have a look at our HPS to LED conversion chart. Much like fluorescent lights, modern LED lights are a wonderful solution for gymnasiums, warehouses, schools and commercial buildings. They lose out to LEDs in many cases because their system efficiency is often much lower due to losses associated with omnidirectional light output and the need to redirect it to a desired area. For this reason LPS lights are actually desirable as they minimize electromagnetic interference near facilities conducting astronomical observation. New LEDs can last 50,000 to 100,000 hours or more. Lighting Comparison: LED vs Metal Halide Lights Most people would really like to see the comparison if possible. For an interesting take on the history of street lighting in the United States read, Low and High Pressure Sodium lights are well-known for their warm yellow glow (CCT values around 2200K). Perhaps more importantly, in the last few years LED efficiency has surpassed that of even LPS and HPS lights and its efficiency improvements are progressing at a much more rapid rate. HPS light setups have a cheaper initial start-up cost, but the price gap between comparable HPS and LED grow has become much smaller as LED grow light setups have become more and more affordable each year. LEDs are an ideal light for purposely turning on and off because they respond rather instantaneously (there is no warm up or cool down period). LED Retrofit, The typical lifespan for a fluorescent bulb, by comparison, is 10-25% as long at best (roughly 10,000 hours). This product adopt the high power LED as the light source, using dozens of high power DMX Emitters of 1 watt LED. Although High Pressure Sodium lamps emit visible light across a slightly more broad spectrum than Low Pressure Sodium lamps, they are still very limited. However, there is exactly one other type of lighting that beats HPS in that category, and that is Light Emitting Diode (LED). LEDs last longer than any light source commercially available on the market. There are four major advantages to LED lighting: In addition to the major advantages, LED lights also offer several smaller perks. There are many variables, so lets dig in! Low and High Pressure Sodium costs vary depending on the specific type of light. It is particularly useful for outdoor lighting where energy efficiency is at a premium (such as with municipalities lighting the streets or other common areas like parking lots.) LED means Light Emitting Diode. Bulb breakage and bulb replacement costs have not been factored into this comparison chart. In some cases (particularly with older HID bulbs) dimming can cause the light to prematurely expire. That said, although LPS and HPS bulbs have a long lifespan relative to most competitors, they still fall short of LEDs. Do LED grow lights yield more? Snow falling on traditional lights like HID will melt when it comes into contact with the light. Specialized in outdoor and indoor lighting products such as silicon led neon light, led strip light, LED floodlight, LED linear light, led corn light, led parking lot light, led ufo high bay etc with DLC/UL/CUL/CE/ROHS certification... Read More, Building A,Second Industrial High pressure sodium vapor (HPS) lights, similar to LPS lights, are a specific type of gas-discharge light (also known as a high intensity discharge, HID or arc light). CRI for LED is highly dependent on the particular light in question. During start (while the sodium is still in solid form) the lamp emits a dim reddish/pink glow. With a LED vs HPS comparison it can be hard to compare apples to apples because there are a lot of things that come into play besides the initial purchase price. Nowadays, however, the situation is drastically different. I know that you have an opinion, I certainly did! The arc tube is made of aluminum oxide and the sodium metal is combined with several other elements like mercury which counter-balances the yellow glow with some white to light blue emissions. This is typically an advantage because light is usually desired over a target area (rather than all 360 degrees around the bulb). Having to purchase one bulb versus three or four bulbs over the course of time is a significant selling point for LEDs. The downside is that there are very few options outside the narrow range to choose from. Like most legacy lamps HPS and LPS lamps operate by using a glass bulb. Induction has, I think lost it's momentum.So a new LED system would save tons of electricity and take fewer fixtures to light the existing area. LEDs fail by dimming gradually over time. Firstly, HPS lights have a very narrow color spectrum, limited to warm deep yellow light. LED stands for light emitting diode. Needless to say, converting from HPS to LED is definitely something you should consider for your home or office. As sodium vapor lights age, more and more voltage is required to produce the same amount of light until eventually the voltage exceeds the fixed resistance provided by the ballast and the light goes out (fails). is slightly improved (HPS lights emit a yellow to white light) but it is still much worse than other types of lamps. The extremely low maintenance and replacement costs with LEDs is actually a major cost benefit over the long term. Are they equivalent?How do we conduct the ultimate grow light review? Our value engineering service can help.). Molestiae reiciendis neque arcu! This means they emit light for 360 degrees, requiring fixture housings or reflectors to direct a large portion of the emissions to the desired target area. That said, the price of LEDs are rapidly decreasing and as they continue to be adopted en masse the price will continue to drop. Topics: Continuous dimming typically alters the light output from 100% to 30% for High Pressure Sodium lamps. The lights become less efficient over time because they must use more and more voltage to produce the same lumen output as the light degrades. Sodium vapor lighting typically requires a “warm-up” period in order to evaporate the internal gas into plasma. Back in the day, more wattage meant more brightness. They are also adaptable for large public areas (which require powerful, efficient lights over a large area), road lighting (which offer significant color advantages over low and high pressure sodium lights), and parking lots. Lorem ipsum dolor sit amet, Mastled established in 2009 and located in Shenzhen China. (Don't give up if you received an expensive proposal to upgrade to LEDs. Low and High Pressure Sodium Lamps come in all shapes and sizes but are typically used for outdoor applications where size isn’t a major factor. Typically they fall around 25 on a scale of 100 where 100 is the best possible. They reach maximum brightness near instantaneously. For an interesting take on the history of street lighting in the United States read here. This is typically an advantage because light is usually desired over a target area (rather than all 360 degrees around the bulb). Sodium lamps have the worst color rendering of any bulb. LEDs Superior Operating Life. Horticulture Lighting Group HLG 650R (Best Overall) This light is the latest powerhouse grow … Tempor reprehenderit accusantium quibusdam iste accusan. LEDs have virtually no warm-up time. Metal Halide / High Pressure Sodium to LED Wattages Conversion: Original Lamp: LED Lamp: 70 Watt Metal Halide: 30 Watt LED: 100 Watt Metal Halide: 40-50 Watt LED: 150 Watt Metal Halide: 60-70 Watt LED: 175 Watt Metal Halide: 80-90 Watt LED: 70 Watt High Pressure Sodium: 40 Watt LED: 100 Watt High Pressure Sodium: 50-60 Watt LED: 150 Watt High Pressure Sodium: 80-90 … My grow closet measures 2′ x 8′. LPS lamps in particular are monochromatic which means that the objects illuminated by them appear shadowy black rather than the color you would see during daylight. Ever wonder what’s better: high pressure sodium lights (and the related low pressure sodium lights) or light emitting diodes (LEDs)? Once the arc is ignited it melts and evaporates metal salts (sodium) internal to the device. Minus 40 Degrees Celsius (and they will turn on instantaneously). The typical 100W-equivalent LED light costs somewhere between $10 and $20. Our extensive collection of products will surely contain the right type of LED lighting for you. Most LEDs come with a minimum 2-year guarantee. LPS or HPS lights will still likely need to be purchased several times and the associated labor costs will need to be paid in order to attain the equivalent lifespan of a single LED light. As we’ve already said, a lumen is a unit of brightness and it represents a simple and easy way of determining how much light a single bulb is capable of exerting. The sodium can catch fire even in the event that the lamp is broken on the ground. Among the deficiencies in this lighting are the following: Among the minor deficiencies in sodium vapor lighting are the following: Common applications for sodium vapor lighting includes street lighting and parking lots as well as for tunnel lighting where color rendering isn’t a major issue. Click edit button to change this text. Well here’s a head-to-head comparison of the two followed by an in-depth discussion of each technology in turn. LEDs have a light spread of 180 degrees, and so more light is actually directed towards the subject in question. Yes, there are LED fixtures that exist when measured directly beneath the fixture. Additionally, as the light heats up it requires additional voltage to operate which is balanced by a ballast (a magnetic or electric device designed to provide the light constant current). Only) $ $230.00 $475.00 Fixture Installation (Labor) $ $29.00 $29.00 Manufacturer's Lamp Life Hours 20,000 50,000 Annual Energy Costs $ $72.36 $32.88 Lamp Replacement Cost $ $1.20 per month $0.60 per month* The lightbulb lumens to wattage chart below will help you understand which LED bulb is comparable to your current incandescent bulb. The spectrum of visible emissions from an LPS light is actually very close together (589 and 589.6 nm, virtually monochromatic) resulting in the colors of illuminated objects being nearly indistinguishable. They do, however, show degraded performance at significantly high temperatures and they require significant heat sinking, especially when in proximity to other sensitive components. Growers endlessly speculate and debate which is better for plant growth. Low Pressure Sodium lamps will not cycle at the end of life but rather will simply fail to strike (turn on) and/or will stay in the warm-up phase indicated by a dim reddish to pink glow. Our, The first practical use of LEDs was in circuit boards for computers. Indeed, high pressure sodium (HPS) lights are generally unmatched in terms of energy efficiency. It is very much the opposite of a photovoltaic cell (a device that converts visible light into electrical current). For this reason it is safest to break sodium lights under water and then to subsequently dispose of the destroyed bulb. When comparing different light bulbs and lamps, it is better to compare the lumens that each bulb produces, in order to gain a true like-for-like comparison. LEDs are solid state lights (SSLs) that are difficult to damage with physical shocks. If you have any information please contact us. Most values for LED system efficiency fall above 50 lumens/watt. A diode is an electrical device or component with two electrodes (an anode and a cathode) through which electricity flows - characteristically in only one direction (in through the anode and out through the cathode). LED has virtually zero maintenance costs and the frequency with which bulbs have to be changed out is by far the best on the market. Both technologies are very efficient. LEDs can be extremely small (less than 2mm in some cases) and they can be scaled to a much larger size. Find the Right LED … Foot candle is a measure that describes the amount of light reaching a specified surface area as opposed to the total amount of light coming from a source (luminous flux). The light will appear reddish/pink when it is first struck (turned on) and it will transition to its characteristic yellow as it reaches its normal operating temperature. The difference between led vs hps lumens per watt is greater because there's less "loss" of light. The principal difference between low and high pressure sodium lights is the operating pressure inside the lamp. LEDs are available in a wide range of color temperatures that generally span from 2200K-6000K (ranging from “warm” yellow to light or “cool” blue). LEDs are very easy to dim and options are available to use anywhere from 100% of the light to 0.5%. Low Pressure Sodium lamps are notorious for having the worst CRI values on the market. Both LEDs and sodium vapor lights emit electromagnetic radiation across a small portion of the visible light spectrum, however, LEDs waste much less energy producing waste heat and they also provide an incredibly better variety of high color rendering index options to the user (thus eliminating the monochromatic black appearance of objects illuminated by LPS and HPS bulbs). When you look at the light intensity charts for each map you’ll see what I mean. Low and High Pressure Sodium lights emit heat that is. Typically they fall around 25 on a scale of 100 where 100 is the best possible. Once the metal is vaporized the emissions become the characteristic bright yellow associated with sodium vapor lamps. Heat output also increases with additional current which decreases the lifetime of the device. The current unit for measuring brightness is the lumen, which represents the amount of light produced by a bulb or a lamp. HIDs are very efficient compared to CFL and incandescent lights (120 lumens/watt source efficiency). These diodes can emit red, blue or green light, and most grow lights offer a balance of the three to mimic natural light. This is especially true of those bulbs in linear tubes. Although they are very popular for street lights, they don’t serve many other applications. http://www.Dealzer.com The results of the life cycle cost analyses are summarized in the chart below. (Don't give up if you received an expensive proposal to upgrade to LEDs. Over the years, advances in technology have brought about innovations in how to light our homes and commercial buildings. The technology pays the investor back over time (the payback period). The uniform light coverage is perhaps the best characteristic of Spider Farmer grow lights and other quantum board grow lights. Low and High Pressure Sodium lights are the only light whose source efficiency compares to LEDs (values range between 50 and 160 lumens/watt for LPS and slightly less for HPS). Phoenix: HPS to LED Conversion Analysis Data (Arterial street) Units HPS - 250 Watt LED - 139 Watt Lamp and Fixture (Mat. The popularity of that technology is not just due to its energy efficiency. absorbed by the ballast and/or lost to the environment. That said, the price of LEDs are rapidly decreasing and as they continue to be adopted en masse the price will continue to drop. On a ten-year basis, the operating cost of the SolarSystem 1100 was 30% less than HPS with a savings of over $72,000. Lighting Comparison, LED Retrofit Management | New & Replacement LED Products | Design & Performance Consulting | Construction & Renovation Services | Value Engineering | Request for Proposals, Parking and Area Lighting | Troffer Lighting | Parking Garage | Fluorescent Lamps | Wall Pack Lights | High Bay Lighting, Pathway & Bollard Lighting | Post Top Lighting | Flood Lighting | High Mast Lighting | Sports Field Lighting | Hazardous Location Lighting | Germicidal UV-C Light, 866-964-8559 info@stouchlighting.com 525 Turner Industrial Way, Lighting Comparison: LED vs High Pressure Sodium/Low Pressure Sodium. Parking Garage Lighting, If you’re interested in the technical details of how an LED works you can read more about it. LEDs emit light for 180 degrees. LEDs are popular because they ar… A LED lamp uses 30 watts quite differently from an HPS one. California Lightworks July 13, 2016 1 8.2k. The two different technologies are entirely different methods of producing light. LED vs High Pressure Sodium. LED Lighting, Lighting Education, It is typically used in outdoor environments for organizations like schools, large commercial buildings like hospitals, or municipalities managing city lighting on a budget. LED Grow Light Comparison. Retail Lighting, Advantages and Disadvantages of LED Lights, IP64 DC12/24V High Lumens LED Corn Light Bulb, 480V 347V 200W Led Corn Cob Lamp with 26000 Lumens, 150W Led Corn Lights For High Bay Fixtures. Additionally, despite their long warm-up period (5-10 minutes), low pressure sodium lamps will re-ignite immediately in the event of a power interruption. Roughly 15% of the emissions are lost due to energy dissipation and heat losses. The bottom line is that having lost their traditional advantage of being the most energy efficient bulb on the market, there’s very little reason to use a sodium vapor light when LED lighting is available. Simply take your current incandescent watts and select the corresponding LED bulb equivalent on the lumens brightness scale. Sodium lights operate in a range where the human eye is very sensitive and so there is less power required to achieve the same lighting effect. LED dimming functions by either lowering the forward current or modulating the pulse duration. Wall Pack Lighting, HPS lamps are better but are still surpassed by virtually every other light on the market. They produce steady light without flicker. Before LED vs HPS comparison, there was a time when HPS (High-pressure Sodium) lamps were dominating the residential, office, farming and industrial lighting scene. Stouch Lighting Services, Since we know the frequency of bulb replacement varies from one gardener to the next, we studied two scenarios: “optimal” and “economical,” as explained in the HID light chart … Several other web sites claim to compare LED grow lights, with lists of the “best LED grow light reviews of 2015”, but these have no explanation of how these “best” choices were made or even what lights were examined. The up-front costs of an LED lighting project are typically greater than most of the alternatives. LEDs are naturally directional (they emit light for 180 degrees by default). In some circumstances heat emissions could be beneficial, however, it is a generally a bad thing to emit heat as it represents an energy inefficiency. LED is the newest and by far the best lighting technology available, using less wattage to produce high levels of brightness. If such a lamp breaks, the exposed sodium metal can result in a fire. Lifespans are variable but typical values range from 25,000 hours to 200,000 hours or more before a lamp or fixture requires replacement. Sodium vapor bulbs contain metals that are evaporated into inert gas within the glass casing while LEDs are a solid state technology. LEDs are fine for all normal operating temperatures both indoors and outdoors. So, to illustrate our point, let’s have a look at our HPS to LED conversion chart. On a quest for the best lights for growing cannabis? That said, a very broad spectrum of CRI values is available ranging generally from 65-95. All High Intensity Discharge lights (of which HPS and LPS are examples) emit light omnidirectionally. That being said, you can use the comparison charts … Outdoor Lighting, So if I get one 300W LED grow light panel, it would be a safe assumption that it … They produce a dark yellow glow which is generally a very low quality light. While this is increasingly becoming the case, there are still a few tradeoffs that need to be made when you choose LED: In particular, LED lights are relatively expensive. A recent addendum to the original report examined LED street lights that could match the pole spacing provided by incumbent 150W HPS street lights. It also means that more accessory parts are required in the light fixture itself in order to reflect or focus the luminous output of the bulb (thus increasing unit costs). LED Street Lights The high power LED street lights LU1 are designed for the street lighting demand and fully meets the special requirements of street lighting. LEDs emit light for 180 degrees. High Pressure Sodium lamps emit visible light across a slightly more broad spectrum than Low Pressure Sodium lamps, they are still very limited. Foot candle is a measure that describes the amount of light reaching a specified surface area as opposed to the total amount of light coming from a source (luminous flux). High Pressure Sodium lights maintain their luminescence fairly well with 90% still available halfway through their lifespan (around 12,000 hours). Omnidirectional lights produce light in 360 degrees. The largest selling point of LPS and HPS lights is the cheap selling price, the high energy efficiency (low operating costs), and the relatively long lifespan. LEDs have an extremely long lifespan relative to every other lighting technology. Disposal issue at the end of its useful life first practical use of LEDs in. See, LED lights are well-known for their warm yellow glow ( values. Need help with your high Pressure sodium lights maintain their luminescence fairly well with 90 % still halfway. Loss '' of light ( particularly LPS lights are generally unmatched in terms of efficiency. 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