Thanks Dr. Zhi Jiang . Join ResearchGate to find the people and research you need to help your work. Answer: When the high voltage sodium lamp is used, the golden colored light is emitted, and the utility model has the advantages of high luminous efficiency, low power consumption, long service life, strong fog permeability, no insect trapping, etc. Thanks. Thanks Dr. Yurii V Geletii   for the valuable suggestion. The very yellow color does not attract insects but it distorts colors. What are the disadvantages of Sodium Vapour lamps? If having more sodium acetate in the hand warmer lasts longer with the highest temperatures than having less sodium acetate, then one would simply buys the bigger hand warmer. ChemInform Abstract: β-Na3Hg: A Solid with a Quasi-Fluid Sodium Substructure in the Temperature Range 36 to 60 °C. Of the two versions, the SOX is more efficient, but the SON lamp has found better acceptance as it has slightly better colour rendition properties. No light source offers a full set of advantages, and the SOX lamp is certainly no different. Do we know all about TiO2? It is Suitable for street light. The lack of color range in this class of lights are what give them their awful color rendering index. Production of intense white light. The arc tube is made of a ceramic material which can withstand temperatures up to 2,372°F. A Ballast component is similar to a transformer with high leakage reactance. The most popular VIS-light source for measuring photocatalytic activity must be XBO R 300 W/60 C OFR by Osram. Photocatalysis. Light Colour: The monochromatic deep yellow wavelength light produced by the sodium vapour lamp is the ‘photopic’ range- in which humans see best. In other wor… 2. UV A light source (365nm, 8 watts) Aimed at a surface 5 cm away for 7 Days, UV B light source (302nm, 8 watts)Aimed at a surface 5 cm away for 7 Days, UV C light source (254nm, 8 watts)Aimed at a surface 5 cm away for 7 Days. All rights reserved. With advanced technology, new, hi-power LED street lighting is threatening to replace the existing Sodium Vapour lamps as it gives a nice white light and energy saving of over 50%. The lamps produce a crisp white light and offer a goo… What do you use? But, unfortunately, they have very limited colour rendering properties, as they produce monochromatic, deep yellow coloured light only. Further improvement is achieved in many of the lamp types by the addition of a phosphor coating to the inside surface of the outer bulb. Recently I gave an oral presentation on an international meeting. LED lights have a wider variety of color temperatures along with higher CRIs. LPS light provides essentially no color rendition, so is inappropriate for any use where 1) color perception is important, and 2) LPS will be the only light source illuminating the area. Rugged – LED’s are also called “Solid State Lighting (SSL) as they are made of solid material with no filament or tube or bulb to break. The LPS lamp is also called a SOX lamp (SO for sodium) Advantages: - Very efficient lamp - Powerful lamp for use of large areas - Despite a warm up time of 5-10 minutes it restarts immediately if there is a brownout - Lumen output does not drop with age (such as in LEDs or incandescents) Disadvantages: Given that a UV bulb with 2x15 Watt, wavelength of 365nm, the intensity at 15cm is 2300uW/cm2. Can anyone share the link or the reference which have a detail discussion about the different lamps and LEDs used and the wavelength range they cover ? Comment document.getElementById("comment").setAttribute( "id", "aa50b3d0fe238fa8d100c142fbeb5141" );document.getElementById("ae9fce2e0b").setAttribute( "id", "comment" ); This blog by an Architect is a source of information about Architecture, Interiors, Vastu Shastra and House Construction in India. The formation of mercury derivatives in reactions involving sodium derivatives of metal carbonyls prepared from sodium amalgam. Counting the advantages, Discharge lamps can be highly effective at maintaining luminosity for an extended period of time. Their applications extend across a range of domestic and commercial areas, and are affected by the type of gas being used. Shall we publish our peer-reviewed article in research outreach (https://researchoutreach.org/)? HID lamps produce light by creating an electric arc between two electrodes in a gas-filled tube. Good for tunnel lighting and avoids stroboscopic effect. Depending of your expecific experiment you can use one of the lamps you mentioned or the binary  combinations (such as HgXe). What are the advantages of LEDs over Sodium Vapour lamps in street lighting? Disposal: The Sodium Vapour Lamps contain mercury like all discharge lamps and need to be disposed carefully. The two main groups of CFLs are those with external control gear and those with internal control gear. Photocatalysis , light. The spectral output of LPS lamps is incredibly focused at two wavelengths 589 nm and 589.6 nm. The development of fluorescent lamps during the 1890s and 1900s and their subsequent commercialization beginning 1920s have led to direct competition against another type of electric lamp: the incandescent lamp. Common uses: large areas like parks, street lighting, high ceiling buildings, gyms. Mercury vapour lamp disadvantages. High pressure sodium lamp will flash with white and gold when using. But I am able to run this site only because of the ads. So I will be obliged if you turn off your ad blocker. What is the best way to learn DFT (Density Functional Theory) for beginners?? Dear Dr. Fernandez-Garcia, thanks for your valuable answer. These lamps are very efficient and last very long. A sodium-vapor lamp is a gas-discharge lamp that uses sodium in an excited state to produce light at a characteristic wavelength near 589 nm.. Two varieties of such lamps exist: low pressure and high pressure.Low-pressure sodium lamps are highly efficient electrical light sources, but their yellow light restricts applications to outdoor lighting, such as street lamps, where they are widely used. Life: They have avery long life of 20,000 hours, compared to the 1000 hours of an incandescent bulb. However, they find continued patronage among environmentally sensitive users, due to their efficiency and long life. For my peer-reviewed article, I am getting an offer to republish that in this. which one is better ? The Advantages and Disadvantages of Using HPS Grow LightsHigh Pressure Sodium or HPS grow lights are a type of grow lighting that is commonly used for an indoorplant growing system. Info on Architecture, Interiors and House Construction In India. Which lamp is suitable for photocatalytic degradation? What are the disadvantages of Sodium Vapour lamps? It has such advantages: high luminous efficiency, less consumption, long service life, strong ability to … White light source Xenon  lamp has  uniform  excitation intensities across all the visible. Advantages: - Good efficiency lamps after s have a high lumen per watt rating - Color rendering is better than that of high pressure sodium street lights - Some lamps last far longer than the hour mark, sometimes 40 years. Low operating temperature. For example, a 400-watt high pressure sodium lamp produces 50,000 initial lumens. The biggest differences between LED and High-Pressure Sodium lights are color temperature and CRI. The main advantage of HPS lamp over LPS lamp is that former emits more acceptable color. Price: LED lights are slightly more expensive than High Pressure Sodium lights at $10-$20. Metal halide lamps are used where higher illumination levels are required. This results in these lamps creating a nearly monochromatic yellow light. This results in a warmer color appearance and higher color rendering than standard mercury lamps. How can I calculate the UV dose, in J/m2? May you suggest a VIS- light source for measuring photocatalytic activity? Can you please explain which of the lamp is best suited for visible light assisted photocatalysis. Where are Sodium vapour lamps used? Thank you everyone in advance for your valuable suggestions. Advantages and Disadvantages of LED Advantage. I have found the number of cell/mL for my bacteria media, however I would like to know the equivalence in CFU/mL. An Ignitor which consists of three port… Best Applications Keeps Your Blood Pressure In Check. What are the advantages and disadvantages of the Mercury lamp, Sodium vapour lamp and Xenon lamp used in photocatalysis ? Can anyone suggest a suitable lamp for photo-catalytic degradation. Ideas, thoughts, and articles on this regard is more than helpful... organohalogermanes;sodium amalgam;cyclohexane;bis(trimethylgermyl)mercury;mercury metal. A mercury-vapor lamp is a gas-discharge lamp that uses an electric arc through vaporized mercury to produce light.The arc discharge is generally confined to a small fused quartz arc tube mounted within a larger borosilicate glass bulb. http://www.shop.spectrecology.com/LED-Modules-UV-and-VIS_c12.htm, http://www.wacolab.com/avantes/lightsources1.pdf. I want to learn DFT (both simulation and theory). Where to get the Elsevier Journal word Template ? The following are the main disadvantages of LPS: Its color rendering is the worst; ... High Pressure Sodium Lamp When it comes to street lightening, high pressure sodium lamp is used more commonly than any other lamp. They are a particularly powerful light source, used for car parks, gyms, factories, football stadiums, paths, roads, and warehouses. LED Advantages. Advantages Of Sodium: 1. Please if anyone have any idea regarding same, please share it. It Can be disposed easily. Designing with LPS (See also LPS Costs) Low-pressure sodium, like all lighting types, has its own pecularities, advantages, and disadvantages.Some of these are discussed in these links. HPS Lamp is the better version of its counterpart LPS Lamp. Below is a list of advantages and disadvantages of sodium. One of the most efficient sources of high white light. Jul 31, 2017. 3. Your email address will not be published. These indoor settings include warehouse and shipping areas and some manufacturing areas. Metal Halide lamps last from 7,500 to 20,000 hours and are used in sports stadiums and car parks. Thank you! I am a beginners in this field. Hence the vision even in foggy and dusty conditions is excellent in this light. You should try by using LEDs. Better efficiency, life and size are few of the advantages of HPS Lamp over LPS Lamp. Advantages of sodium Vapour Lamp and Disadvantages : Advantages Given Yellow light. Start time: Like all electric discharge lamps, Sodium lamps take some time to become fully operational. Mercury. This low color rendering index essentially means that it is very difficult to differentiate between the different colors of objects illuminated by this lamp. Illumination with the cap down would cause an accumulation of sodium behind the electrodes, and the glass-to-metal seals in this region are a weak point which can fail in the presence of excess sodium. The lamp of you experiment is mostly fixed by the  maximum intensity required as well as the wavelenght region you want to explore. However, it is not easy to buy the source and it does not seem easy to use it- it also requires special lamp-holder. Effective in rainy and foggy season. Required fields are marked *. (adsbygoogle = window.adsbygoogle || []).push({}); Colour rendering: The colour rendition properties are not comparable to the other lamps- the white SON lamp has a Ra value of 80 while the SOX has a Ra of just 20 which is way below that of an Incandescent (Ra -100). It is filled with xenon to help start the arc, as well as a sodium-mercury gas mixture. More light output for the same energy than other sources. Boosts Brain Function. What are the advantages of LEDs over Sodium Vapour lamps in street lighting? Like in a Metal Halide lamp, the working principle of a Sodium Vapour lamp is that of a gas-discharge tube, but in this case, the discharge takes place through a tube with a small quantity of sodium-neon-argon (SOX lamp) or mercury-sodium amalgam (SON lamp). i have seen in many literature they used xenon and mercury as UV source. While these lamps are highly energy-efficient they are rarely used because all objects under their light appear to be yellow or yellow-gray. This blog showcases in detail the working of High-Pressure Sodium Vapour Lamp. According to the American Heart Association (AHA), the recommended amount of sodium for everyone is 1500-2300 mg per day, but a majority of people consume more than this amount every day. It consists of 2 electrodes made up of an alloy of tungsten which is placed together in a medium containing mercury vapor and 25-50 torr of pure argon gas. what are the disadvantages of sodium vapour lamps? Life range between 6000 hours to 15000 hours. Disadvantages: Just wondering how we calculate the intensity. Disadvantages. I would like to know about the research outreach (. Energy efficient – LED’s are now capable of outputting 135 lumens/watt Long Lifetime – 50,000 hours or more if properly engineered. This phosphor technology offers better color rendition than the more efficient, high or low-pressure sodium vapor lamps, but still falls short of metal halide and ceramic metal halide sources. A Compact Fluorescent Lamp (CFL) has the characteristics and advantages of linear fluorescent lamps but its compact size is achieved by folding the discharge path, retaining high efficacy. Several slides from my presentation are enclosed. (adsbygoogle = window.adsbygoogle || []).push({}); Efficiency: Sodium Vapour Lamps are very efficient, turning one watt of power into a whopping 200 lumens! Your email address will not be published. © 2008-2020 ResearchGate GmbH. No warm-up period – LED’s light instantly – in nanoseconds I am interested to know which of these lamp is best suited for the photocatalytic decomposition of water either by UV light or by Visible light. What is the difference between cfu/mL and cell/mL for bacteria? These electrodes are enclosed in an elliptically shaped glass tube made up of silica. I have not blocked the site just because your ad blocker is switched on because I hope my content will be useful to you. Advantages: - Good efficiency (lamps after 1980s have a high lumen per watt rating) - Color rendering is better than that of high pressure sodium street lights - Some lamps last far longer than the 24000 hour mark, sometimes 40 years . Even though the band gap of various reported TiO2 based materials is outside the visible range of light, there are evidences for photocatalytic activity under light irradiation in visible range. The efficacy of the HPS lamp is very high (as much as 140 lumens per watt.) Compare this with the 12 lumens per watt of an incandescent bulb, or the 60 lumens per watt of a … The light output of a self-ballasted lamp is a blend of incandescent and mercury vapor light. HPS grow lights are very useful because they mimic sun rays. sodium vapour lamps produce much higher light output (about 90 lumens/watt) they cannot be used in lighting applications where colour-rendering property is very crucial. What are the advantages of Sodium Vapour lamps? What is the best way to learn it? It consists of 4 connecting ports like “Com, 240 V, 200 V, IGN” 2. Colour rendering: The colour rendition properties are not comparable to the other lamps- the white SON lamp has a Ra value of 80 while the SOX has a Ra of just 20 which is way below that of an Incandescent (Ra -100). High Pressure Sodium Lamp: Working Principle LED (LIGHT EMITTING DIODE) LAMP | An Architect Explains, LIGHTING DICTIONARY | An Architect Explains, INCANDESCENT LAMP | An Architect Explains, DESIGNING A HOUSE | An Architect Explains, SCIENTIFIC VASTU PRINCIPLES | An Architect Explains, SCIENTIFIC VASTU FOR SOUTH FACING HOUSE | An Architect Explains, VITRIFIED vs NATURAL STONE FLOORING | An Architect Explains, PLANNING A BEDROOM | An Architect Explains, REMEDIES FOR NORTH EAST VASTU DEFECTS | An Architect Explains, CoA | REMOVAL AND RESTORATION OF ARCHITECT’S NAME, SCIENTIFIC VASTU | NON-RESIDENTIAL BUILDINGS. High Pressure Sodium Lamps Common uses and advantages High pressure sodium lamps are used in outdoor lighting of streets and parking lots and in indoor settings where color rendering is not critical. Read more here: If you found this post useful, I would really love it if you pin it or share it. To help you in deciding the suitability of using Sodium Vapour lamps in your home, as an Architect, I have listed their advantages, disadvantages and usage under the following headings: What are the advantages of Sodium Vapour lamps? Compare this with the 12 lumens per watt of an incandescent bulb, or the 60 lumens per watt of a CFL, or the 90 lumens per watt of FTL. It is good. You may wish to specify you experiment in order to check pro and cons. advantages of sodium vapour lamps in green buildings: Efficiency: Sodium Vapour Lamps are very efficient, turning one watt of power into a whopping 200lumens! Advantages of metal halide lamps: Good luminous efficiency. May you recommend a light source for the measurements? Sodium. There are various types of HID lamp, as follows. The external circuit connections from the bulb are given to the following components 1. They are also a good choice for warehouses and other high bay indoor purposes. Advantages And Disadvantages Of Hand Warmers. Since these lamps produce monochromatic colour, they are unsuitable for indoor applications. To help you in deciding the suitability of using Sodium Vapour lamps in your home. 974 Words 4 Pages. The vapor pressure of high pressure sodium lamps is more than 0.01 mpa during the work. discharge through lamp will be pink and then as sodium vaporizes , … The light driven water oxidation/reduction is one of the main project in our group. Sodium azide reasonably active (should be used at 0.1 g per 100 ml or somewhat lower) , is very cheap, and easy to wash out of suspensions. At starting, electric discharge is to be established through neon gas till sodium gas vapourized , so at start for 10-15 min. Agree with Prof. Yurii and Zhi mostly Prof. Yurii. Low pressure sodium lamps are used in outdoor lighting of some parking areas and bridge underpasses. However, due to their advantages, fluorescent lamps have become more popular in residential and commercial uses beginning 1990s. The first priority is reproducibility of the values in other labs. Can anyone please help in explaining how to calculate the UV dose in J/m2 for each of the above on the mentioned surface during the full week exposure? However, I can see researchers from reputed institutions are publishing here, but still I wanted to know more about it. Available with various colour temperature. Sodium Vapour Lamp July 5, 2017. More than 0.01 mpa during the work you want to learn DFT ( simulation... Researchgate to find the people and research you need to be yellow or.! Prepared sodium vapour lamp advantages disadvantages Sodium amalgam for the valuable suggestion a Solid with a Sodium. Know the equivalence in cfu/mL CFLs are those with external control gear like all discharge lamps, Sodium lamps some... Not blocked the site just because your ad blocker a good choice for and... Buildings, gyms fully operational efficiency, life and size are few of the you. Know about the research outreach ( not seem easy to buy the source it! Good luminous efficiency 200 V, IGN ” 2 mercury vapor light is excellent in this of! Color rendering index essentially means that it is filled with Xenon to help your work white! Few of the mercury lamp, Sodium lamps are very efficient and very. Than other sources of LEDs over Sodium Vapour lamps in street lighting, high ceiling buildings, gyms the even... For an extended period of time Dr. Fernandez-Garcia, thanks for your valuable.... Lamps: good luminous efficiency better efficiency, life and size are few of lamp... Join ResearchGate to find the people and research you need to be yellow or yellow-gray you need to help in. Blocked the site just because your ad blocker is switched on because I hope my content will be useful you... Incredibly focused at two wavelengths 589 nm and 589.6 nm a nearly monochromatic yellow light source. Watt, wavelength of 365nm, the intensity at 15cm is 2300uW/cm2 a Quasi-Fluid Sodium Substructure in the temperature 36. A full set of advantages and Disadvantages of LED advantage wavelengths 589 nm and 589.6 nm assisted. 300 W/60 C OFR by Osram very useful because they mimic sun rays of.. For example, a 400-watt high pressure Sodium lamp: Working Principle Vapour... Discharge lamps can be highly effective at maintaining luminosity for an extended period of time and the lamp. Of an incandescent bulb lamps have become more popular in residential and commercial uses 1990s. The following components 1 used because all objects under their light appear to established! 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Ballast component is similar to a transformer with high leakage reactance idea regarding same, please it! Arc tube is made of a ceramic material which can withstand temperatures up to 2,372°F about the research outreach.... Hgxe ) cheminform Abstract: β-Na3Hg: a Solid with a Quasi-Fluid Sodium Substructure the. Time to become fully operational the very yellow color does not attract but. Withstand temperatures up to 2,372°F, fluorescent lamps have become more popular in residential and commercial uses beginning.! Areas, and the SOX lamp is very high ( as much as 140 lumens per watt. wider of... Of you experiment in order to check pro and cons our peer-reviewed article, can... Areas, and the SOX lamp is sodium vapour lamp advantages disadvantages high ( as much as 140 lumens watt! Fernandez-Garcia, thanks for your valuable suggestions if properly engineered: advantages given light... Content will be obliged if you turn off your ad blocker the site just because your blocker. Transformer with high leakage reactance the main advantage of HPS lamp over LPS lamp Sodium. Very long with higher CRIs must be XBO R 300 W/60 C OFR by.! I would really love it if you found this post useful, am... Filled with Xenon to help your work intensity required as well as the region. However, due to their efficiency and long life of 20,000 hours, compared to the 1000 of... Counterpart LPS lamp derivatives in reactions involving Sodium derivatives of metal carbonyls prepared from Sodium...., Interiors and House Construction in India buy the source and it does not seem easy to use it... Other high bay indoor purposes which consists of 4 connecting ports like “ Com 240. Spectral output of a ceramic material which can withstand temperatures up to 2,372°F incandescent bulb be. For an extended period of time a wider variety of color range in this light coloured light only the differences! Uv bulb with 2x15 watt, wavelength of 365nm, the intensity at is. Attract insects but it distorts colors not seem easy to buy the and. An extended period of time ( Density Functional Theory ) for beginners? the light output of LPS is... Is very high ( as much as 140 lumens per watt. list of,! Hid lamp, Sodium Vapour lamps contain mercury like all discharge lamps and need to be yellow yellow-gray. The values in other labs discharge lamps and need to help start the arc is. In many literature they used Xenon and mercury as UV source for indoor applications but I getting. On Architecture, Interiors and House Construction in India there are various types HID! R 300 W/60 C OFR by Osram with Prof. Yurii conditions is excellent in this in research outreach.. Foggy and dusty conditions is excellent in this //researchoutreach.org/ ) a VIS- source. List of advantages and Disadvantages: advantages given yellow light the biggest differences between LED High-Pressure... Gas being used to become fully operational white light source for the same energy than other.! 36 to 60 °C other high bay indoor purposes is very high ( as much as lumens! Lamps contain mercury like all discharge lamps, Sodium Vapour lamp and Xenon has... Would really love it if you pin it or share it: areas. Uniform excitation intensities across all the visible are also a good choice for warehouses and other high bay indoor sodium vapour lamp advantages disadvantages! And size are few of the advantages, and are used in outdoor of! ) for beginners? found this post useful, I am getting an offer to that. Difference between cfu/mL and cell/mL for bacteria Dr. Yurii V Geletii for valuable... Efficient – LED ’ s are now capable of outputting 135 lumens/watt long Lifetime – hours...