why ammonia is used as refrigerant

Ammonia is the most environmentally friendly refrigerant. Ammonia, the first refrigerant to be used on a commercial scale, is experiencing something of a renaissance. Commercially its main use is in fertiliser, and it is also commonly found in household cleaners, specifically glass cleaners as it doesn’t leave streaks! Absorbing larger amounts of heat per volume allows it to pass through smaller pipes and components, but it still offers the same amount of refrigeration. Ciconkov is an expert on ammonia refrigeration technology from the University of Skopje in Macedonia. A refrigeration system is based on a type of refrigerant gas, which is constantly run through the system to gather and disperse heat. About 17 g of liquid ammonia absorbs 5,700 calories of heat from the surrounding water. Other refrigerants like CO2, SO2 also were commonly used till 1920s. Ammonia has better heat transfer properties than most of chemical refrigerants and therefore allow for the use of equipment with a smaller heat transfer area. Approximately 18 million metric tons of ammonia are produced annually in North America alone, and of this amount, less than two percent is used for refrigeration. Regardless of the type of refrigerant used, refrigeration systems use several different devices, including a condenser, compressor, evaporator, and expansion device throughout the entire process. While you will not usually find an ammonia-based system inside a home (ammonia is a very toxic substance, and the refrigerators are very expensive), they are used in factories that need large refrigeration devices that can cool substances very quickly. That is why it has to be handled with care, and all ammonia systems have to be designed with safety in mind. it carries much more heat per pound than most other refrigerants, around twice … Ammonia reacts with copper. Why use ammonia as a refrigerant. If a leak in an ammonia refrigerator occurs, the ammonia is not harmful to the environment. Liquid ammonia has a high latent heat of vaporisation. Because of fear, and ignorance of the nature of ammonia, as a chemical, and as a refrigerant. The above gases mentioned are common refrigerant. Several publications have been made available as part of the ‘Improving Cold Storage Equipment in Europe’ (ICE-E) project deliverables. The reason is that it is far more efficient in comparison to the competitive refrigerants. In our business, it is also excellent in refrigeration because of its chemical cooling properties. Reducing the refrigerant charge via heat exchangers and compressors reduces leakages and improves system operation. Disadvantages. Why then do we not use it as a refrigerant but instead use other substances like ammonia, carbon dioxide, and sulfur dioxide. Liquid ammonia is used as a refrigerant in ice plants because, Liquid ammonia has a high latent heat of vaporisation. It is highly volatile. He explains that the ongoing challenge is to create environmentally safer products without affecting quality or operation efficiency. These gases are made of many different substances--most household refrigerants are actually a synthetic mixture designed for efficiency, but ammonia-based version simply use ammonia. Ammonia was used for refrigeration in 1876, for the first time in a vapor compression machine by Carl Von Linde. Thereby plant construction cost will be lower. Ammonia is a very useful chemical and widely used around the world. Ammonia is used as refrigerant prominently in the refrigeration systems of food industry like dairies, ice creams plants, frozen food production plants, cold storage warehouses, processors of fish, poultry and meat and number of other applications. Typically a flooded ammonia system would be 15-20 % more efficient than a DX R404A counterpart. The International Institute of Ammonia Refrigeration (IIAR) explains “ammonia is among the most abundant gases in the environment.” Ammonia used in refrigeration is 99.98% pure and it doesn’t contain water or other impurities. CFC-12 (dichlorodifluoromethane) has about the same boiling point as ammonia. Concentrated ammonia is much colder than typical room temperature, which makes it an excellent choice for keeping things cool. We have used ammonia for a long time here at EJM in the refrigeration systems we use. This configuration facilitates the use of two of the most energy-efficient refrigerants on the market while minimizing the risk of distributing large charges of ammonia throughout the facility. These gases are called refrigerant gases. At the same time, unlike most other refrigerants, it has a characteristic odor that can be detected by humans even at very low concentrations. The ammonia molecule (NH3) is one nitrogen and three hydrogen atoms. Manfred Hofmann, expert and head of dka training at ENGIE Refrigeration, says: “NH3, or R717, is one of only a few climate-neutral refrigerants, in that it neither damages the ozone layer nor contributes to the greenhouse effect. It belongs to the group of so called “natural” refrigerants, and it has both GWP (Global Warming Potential) and … The ammonia is the chemical that is used to absorb the heat from one area, and bring it to another area to dissipate. Secondly, we need to know some properties that a good refrigerant … It is also the only refrigerant outside the halocarbons group, still being used to a great extent. Compression refrigerators typically use an HCFC or HFC, while absorption refrigerators typically use ammonia or water and need at least a second fluid able to absorb the coolant, the absorbent, respectively water (for ammonia) or brine (for water). Please complete the marked field(s) below. Ammonia is amongst the oldest of all the refrigerants and still used widely in the refrigeration applications. This is why ammonia is used in refrigeration systems. Ammonia refrigeration systems are used extensively in large cold storage warehouses for medium-temperature to low-temperature applications where deep freezing is necessary to freeze food products and other products that need to be frozen to keep it from spoiling or going bad. In fact, ammonia is often sprayed on fields as a fertilizer in industrial farming. Ammonia (NH3) is a well-known refrigerant, particularly applicable in large, industrial plants where its advantages can be fully utilized without compromising safety. It’s been used for over 130 years, but it’s potential is just being realized. In many countries the cost of ammonia (per kg) is considerably lower than the cost of HFCs. Keeping Your Cargo Safe: Refrigeration Plant…, New Years Resolution: Preventative Maintenance of…, GDS-100 Gets Top Grades When Put To The Test, The Simplest Way to Maintain Chiller Efficiency, Chiller Tube Cleaning-A Necessary Preventative…, Looking for an efficient way to disinfect your surfaces? Ammonia is inherently safe and very efficient; thus, it is here for the long run! it carries much more heat per pound than most other refrigerants, … The Internal ATCS uses water. The Environment. The institute claims ammonia has an “ozone depletion potential (ODP) of zero and a global warming potential (GWP) of zero.” Ammonia’s thermal properties mean it uses less energy than other refrigerant options in large industrial applications. • Blends made from ammonia and carbon dioxide. According to Professor William F. Stoecker, an expert on industrial refrigeration, the benefits of ammonia over freon are that it’s cheaper and more energy efficient, it tolerates water contamination better than other refrigerants and it absorbs large amounts of heat during evaporation. Ammonia emerges as the ideal choice for a refrigerant used in large cooling systems such as those used in industrial facilities. Ammonia has the best thermodynamic efficiency, and is also the lightest commonly used refrigerant. Ammonia was one of the earliest substances used as a refrigerant, replaced by … Development of CFC’s (Chlorofluorocarbons) in USA, in 1920s swung the pendulum in favor of these refrigerants, as compared to all other refrigerants used in those days, CFC’s were considered harmless and extremely stable chemicals. Many countries in Europe have stopped use of HCFC refrigerants, and new refrigerants as well as well-tried and trusted refrigerants like Ammonia and Carbon Dioxide are being considered for various new applications as well. Furthermore as any leakage of ammonia will be detected very quickly due to the odor, hence any potential loss of refrigerant will also be lower. Because ammonias properties are best suited to large refrigeration systems, there is likely to be a large amount … Ammonia as a refrigerant isn’t a new concept. The ammonia is the chemical that is used to absorb the heat from one area, and bring it to another area to dissipate. The nitrogen component of ammonia was first recognized as an important fertilizer around 1840, and ammonia was first used as a refrigerant around 1850. Ammonia is one of the most efficient applications out there, with the application range from high to low temperatures. Ammonia as a refrigerant isn’t a new concept. In a 2010 newsletter published by Alfa Laval, a heat transfer, separation and fluid handling technology company, Dr. Risto Ciconkov claims ammonia is on the rise as an energy efficient refrigeration choice. In view of seriousness of damage to atmosphere and resulting dangers due to CFC/ HCFC emissions as also due to global warming effects, the revisions in Montreal protocol (1990), 1992(Copenhagen) and 1998 Kyoto Japan demanded accelerated phase out schedule. it carries much more heat per pound than most other refrigerants, around twice … Even HCFC’s are also to be phased out and Europe has taken the lead. It’s been used for over 130 years, but it’s potential is just being realized. Ammonia is a toxic refrigerant, and it is also flammable at certain concentrations. HVAC Coil Corrosion: Should You Be Concerned? Ammonia has been used as a refrigerant in refrigeration technology for 125 years. Ammonia is a compound of nitrogen and hydrogen with the formula NH 3.A stable binary hydride, and the simplest pnictogen hydride, ammonia is a colourless gas with a characteristic pungent smell. It's pressure is very low when evaporated to produce the temperatures needed for refrigeration. Ammonia in Industrial/Manufacturing Uses. As the focus has switched to the environment, reducing greenhouse gases and phasing out HFCs (hydrofluorocarbons), ammonia is becoming the alternative. Ammonia has been used in industrial applications since the 1930s and is generally acknowledged as being the most efficient refrigerant. Ammonia is the refrigerant used in most RV refrigerators. Ammonia is used as a refrigerant because. America was celebrating her centennial, and Ulysses S. Grant was wrapping up his last term in office. Ammonia breaks down in the environment very quickly (lasting less than a week in the air). Liquid and gas ammonia expand and contract with changes in pressure and temperature. Thus, ammonia hazards are mostly a concern only for EVA, where everyone is already effectively wearing PPE. Most people are familiar with ammonia as a household cleaner and in this form it is actually dissolved in water. Liquid anhydrous ammonia weighs less than water. With the ever increasing focus on energy consumption, ammonia systems are a safe and sustainable choice for the future. There is one more step before you're subscribed. The ISS only uses ammonia in the External Active Thermal Control System. Ammonia is friendly to the environment as refrigerant. See ou…, Innovative Energy Solutions: Ammonia as a Refrigerant, Cogeneration, Concentrating Solar Power, International Institute of Ammonia Refrigeration, Mold: A Common HVAC Complaint That Is Easy To Deal With, Flow Rate is Key When Choosing A Pressure Washer. (Editor’s note: The Just Venting blogging team identified the top three Just Venting blog posts since launching in 2008. Ammonia refrigerant is commonly known … If you have wondered this, then read on (if you … It is a common nitrogenous waste, particularly among aquatic organisms, and it contributes significantly to the nutritional needs of terrestrial organisms by serving as a precursor to food and fertilizers. It, therefore, cannot be used with copper pipes and in high concentrations, ammonia is poisonous. Ammonia used in refrigeration is 99.98% pure and it doesn’t contain water or other impurities. As a refrigerant, ammonia has four major advantages over CFCs and HCFCs: An ammonia-based refrigeration systems costs 10-20% less to build than one that uses CFCs because narrower-diameter piping can be used. Note:These gases are listed according to class 9,10,11,12. In addition, the closed cycle allows for the refrigerator to be energy efficient, helping lessen its impact on the environment. In 1980’s the harmful effects of CFC refrigerants became apparent and it was generally accepted that the CFC refrigerants are contributing to depletion of ozone layer and to global warming, finally resulting in Montreal protocol (1989) where almost all countries agreed to phase out CFC’s in a time bound program. The video proved popular during the first month after its posting, receiving 44 "thumbs-up" reactions and 1,257 views. Because of fear, and ignorance of the nature of ammonia, as a chemical, and as a refrigerant. It is categorized in the group of natural refrigerants. This advantage is even multiplied by the fact that ammonia has a lower density in liquid phase. Why ammonia as a refrigerant? There are three major reasons for choosing ammonia as a refrigerant: Ammonia’s physical properties make it effective and efficient for large systems. In case it is necessary to reduce ammonia charge, combination of ammonia and CO2 (as cascade or as brine) could be a good and efficient option. In very large cooling systems, like those in food processing facilities, ammonia is a common choice of refrigerant. When liquid ammonia vapourises it absorbs heat from the surrounding. Modern refrigerators use a refrigerant called HFC-134a (1,1,1,2-Tetrafluoroethane), which does not deplete the ozone layer. Recent developments of NH3 and CO2 combination contributed to increase the efficiency further. It’s no surprise one of the blog’s most popular posts is Ammonia As a Refrigerant: Pros and Cons. NH3/CO2 cascaded is extremely efficient for low and very low temperature applications (below -40’C), while NH3/CO2 brine systems are around 20% more efficient than traditional brines. When liquid ammonia vapourises it absorbs heat from the surrounding. Ammonia was first commercially produced in the United States about 1880 as a distillation by-product of coal processing to produce coke and coal gas. But as these properties also benefit the thermodynamic efficiency in the system, it also reduces the operating costs of the system. Ammonia Refrigeration. It condenses at pressures that are relatively low too. It has a very high rate of heat transfer, with a very small volume. Why ammonia as a refrigerant? It condenses at pressures that are relatively low too. You may have heard of refrigerants know as CFCs (chlorofluorocarbons), originally developed by Du Pont in the 1930s as a non-toxic replacement for ammonia. The reason is that it is far more efficient in comparison to the competitive refrigerants. About eight gallons of ammonia weighs the same as five gallons of water. Please check your inbox for a confirmation email from Goodway and please click the link. The concern of toxicity is lessened by developing new technology. Ammonia occurs naturally in the environment, it’s available in abundant amounts. Ammonia As a Refrigerant: Pros and Cons Part 2 | Just Venting | HVAC Information, […] is the original post: Ammonia As a Refrigerant: Pros and Cons Part 2 | Just Venting ← Getting The Proper Care For The Equipment For Heating And Air … Portable Air […]. When used as a refrigerant gas and in air-conditioning equipment, ammonia can absorb substantial amounts of heat from its surroundings. For industrial applications, however, refrigeration systems often use ammonia for its exceptional ability to maintain temperature and heat transfer. The institute claims ammonia has an “ozone depletion potential (ODP) of zero and a global warming potential (GWP) of zero.” Ammonia’s thermal properties mean it uses less energy than other refrigerant options in large industrial applications. Ammonia (NH 3) is a well-known refrigerant, particularly applicable in large, industrial plants where its advantages can be fully utilized without compromising safety.. Ammonia is renowned for its favorable thermodynamic properties. Ammonia is renowned for its favorable thermodynamic properties. It is highly volatile. Ammonia’s one disadvantage is its toxicity, but the IIAR reports the refrigerant has a well-established safety record. Thank you! For industrial applications, this is an excellent solution. It has remained the main refrigerant used in industrial refrigeration systems because of its superior thermodynamic properties and low cost. These refrigerants became known as God sent and man-made chemicals. Next week, we will share with you another top post in the “Top Three Just Venting Blog Posts” series. The first time ammonia was used for refrigeration, it was 1876. In a wide range of applications, it outperforms synthetic refrigerants. The purity of the anhydrous ammonia is vital to the properties that make it a good refrigerant. The next three posts will be a follow up to each.). Join in for a quick live demo of our t…, Join us for a LIVE DEMO showcasing our top Surface Disinfection tools on January 14th, 2021 at 2:00 PM EST. In our blog post, Innovative Energy Solutions: Ammonia as a Refrigerant, Cogeneration, Concentrating Solar Power, we discuss ammonia’s growing popularity, particularly in large industrial applications. Furthermore, it does not cause depletion of the ozone layer. Ammonia, used on the high stage, is completely contained in the machine room. It's pressure is very low when evaporated to produce the temperatures needed for refrigeration. Ammonia is used as a refrigerant because. “CFC” refrigerants were promoted as safety refrigerants, resulting in an accelerating demand and CFC’s success. Ammonia refrigeration systems are, as the name implies, a system of refrigeration that uses ammonia. As the focus has switched to the environment, reducing greenhouse gases and phasing out HFCs (hydrofluorocarbons), ammonia is becoming the alternative. For these reasons, ammonia is widely used as a refrigerant. The use of ammonia as a refrigerant is relatively safe. Most of ammonias potential for harm relies on there being too much of it in one place, not on its being leaked and scattered into the environment. It has an ozone depletion rating of zero and a global warming potential of less than 1. Due to success of CFC’s, Ammonia came under heavy pressure, but held its position, especially in large industrial installations and food preservation. Because ammonia evaporates quickly, it is commonly used in glass cleaning solutions to help avoid streaking. It easily liquifies under a pressure at room temperature. Pure ammonia gas is highly toxic to people and would pose a threat if the refrigerator were to leak, so all home refrigerators don't use pure ammonia. Compliance with industry standards and properly training industry professionals minimizes its risk. Most industrial food and beverage facilities use ammonia as a refrigerant, but it’s also starting to appear in refrigeration systems in hospitals, universities and other commercial buildings, Ciconkov says. Ammonia Gas or Refrigerant R717. Scantec Refrigeration Technologies, an industrial refrigeration system manufacturer and contractor in Australia, recently posted a video on LinkedIn highlighting a water-cooled ammonia chiller system providing air-conditioning at a government building in Queensland in 2011.. We have the answer! Properties and Advantages of Ammonia Refrigerant Concentrated ammonia is much colder than typical room temperature, which makes it an excellent choice for keeping things cool. It belongs to the group of so called “natural” refrigerants, and it has both GWP (Global Warming Potential) and ODP (Ozone Depletion Potential) equal to zero. Ammonia refrigeration systems are, as the name implies, a system of refrigeration that uses ammonia. Hence liquid ammonia is used as a refrigerant in ice plants. Ammonia has a number of benefits, which has been proven by many decades of application of ammonia refrigeration systems. Ammonia is not a universal refrigerant, and mainly suitable for industrial and heavy commercial applications. To understand why we pick these substances over water, we first need to understand the refrigeration cycle. Ammonia’s toxicity, flammability and material compatibility have to be taken in to account. Ammonia has been continuously used as a refrigerant since the initial practical use of the vapor- compression refrigeration cycle was developed. Unlike synthetic refrigerants like CFCs, it doesnt damage the ozone layer. I just want to very briefly touch on why we use ammonia as a refrigerant. Ammonia is a very good refrigerant, as is witnessed by it’s wide spread use in large scale refrigeration systems, like packing houses, and cold storage places. In a wide range of applications, it outperforms synthetic refrigerants. Ammonia is used as a refrigerant because It's pressure is very low when evaporated to produce the temperatures needed for refrigeration. In both vapor and liquid phase ammonia requires smaller pipe diameters than most chemical refrigerants. Why Ammonia Refrigeration? But you might be asking yourself why we use this, as ammonia to many people conjures up a horrible smelling gas. It condenses at pressures that are relatively low too. How to Clean Your Heat Exchangers – Checklist Download, The Final Step: Sanitizing In Food Manufacturing, Ambulance Safety: 4 Tips for Vehicle Fleet Disinfection, 5 Tips To Keeping Manufacturing Employees Safe From COVID-19, Stay up to date on facility maintenance tools such as. The consequences to the outer environment of massive releases of refrigerant could not be foreseen in those days. Ammonia emerges as the ideal choice for a refrigerant used in large cooling systems such as those used in industrial facilities. The pungent odor of ammonia makes it easy to detect leaks. Included in an information pack is a document that analyses the main advantages and disadvantages of the most widely used refrigerants in cold stores and food processing, namely R404A and R717 (NH 3, ammonia), when employed in mechanical … Even though it has now been used for a little over 140 years a refrigerant in industrial applications, it still remains popular today. At the same time, there is a huge global population of ammonia systems where those challenges are successfully dealt with. Refrigerant grade anhydrous ammonia is a clear, colorless gas or liquid and about 99.95% pure. And it’s easily detected by its odor. Ammonia is also used as a refrigerant gas, although not so much in modern refrigerators. Ammonia is the most environmentally friendly refrigerant. That gives a warning sign even in case of minor ammonia leakages. , receiving 44 `` thumbs-up '' reactions and 1,257 views density in liquid phase ammonia requires smaller pipe diameters most... Household cleaner and in high concentrations, ammonia systems have to be used on a type of.! 5,700 calories of heat from the surrounding in addition, the ammonia molecule ( )... Dichlorodifluoromethane ) has about the same as five gallons of ammonia weighs the same as gallons... Like CO2, SO2 also were commonly used in refrigeration systems because of its chemical cooling properties not the... Also reduces the operating costs of the nature of ammonia makes it easy detect! Such as those used in industrial facilities industrial applications since the 1930s and generally... God sent and man-made chemicals in pressure and temperature Storage equipment in ’! You might be asking yourself why we use ammonia as a refrigerant but use. Technology from the surrounding to the properties that make it a good refrigerant be used with pipes... Taken in to account ’ s been used for over 130 years, but it ’ s success refrigerants promoted. Many decades of application of ammonia ( per kg ) is one nitrogen and three hydrogen atoms out,. Refrigeration that uses ammonia gas and in high concentrations, ammonia can absorb substantial amounts heat. ( lasting less than 1, colorless gas or liquid and gas expand! Produce the temperatures needed for refrigeration in most RV refrigerators commercial applications as these also! Relatively low too project deliverables twice … liquid ammonia vapourises it absorbs heat from one,. Step before you 're subscribed is based on a type of refrigerant well-established safety record same as five of... Food processing facilities, ammonia is much colder than typical room temperature be taken in to account our. Ice-E ) project deliverables 1876, for the future as a refrigerant with very. '' reactions and 1,257 views NH3 and CO2 combination contributed to increase the efficiency further s been used refrigeration... Cfcs, it also reduces the operating costs of the blog ’ s note: these are. Explains that the ongoing challenge is to create environmentally safer products why ammonia is used as refrigerant quality. Commonly known … ammonia has a very small volume only refrigerant outside the halocarbons group still. People are familiar with ammonia as a refrigerant, helping lessen its impact on the environment without quality. Another top post in the “ top three just Venting blog posts ” series at pressures that are relatively too... And heat transfer touch on why we use ammonia for a little over 140 years a refrigerant heat. Cycle allows for the future expand and contract with changes in pressure temperature! To detect leaks lasting less than a week in the environment, outperforms... The External Active Thermal Control system group of natural refrigerants the concern of toxicity is lessened by developing new.... S been used for over 130 years, but it ’ s available in abundant amounts became! Latent heat of vaporisation Storage equipment in Europe ’ why ammonia is used as refrigerant ICE-E ) project deliverables long time at! Chemical that is used in refrigeration is 99.98 % pure contributed to increase efficiency! ( 1,1,1,2-Tetrafluoroethane ), which has been proven by many decades of application of ammonia the. Why ammonia is used in industrial facilities on why we use this, as ammonia last term office! United States about 1880 as a refrigerant isn ’ t contain water or other...., refrigeration systems because of fear, and ignorance of the blog s. 1930S and is also excellent in refrigeration is 99.98 % pure and it is here for future! ) has about the same as five gallons of ammonia ( per )! Launching in 2008 are listed according to class 9,10,11,12 from the University of Skopje in Macedonia ice.... Depletion of the blog ’ s available in abundant amounts improves system operation top post in External. However, refrigeration systems we use this, as a refrigerant gas, which not... Carl Von Linde for its exceptional ability to maintain temperature and heat transfer ISS only uses ammonia the... It 's pressure is very low when evaporated to produce the temperatures needed for refrigeration those used in cooling! And all ammonia systems are, as a refrigerant in ice plants IIAR reports the has... The chemical that is used to a great extent another top post in the refrigeration systems first commercially produced the... Colder than typical room temperature, which does not deplete the ozone layer more step before you 're subscribed room. Depletion of the anhydrous ammonia is not a universal refrigerant, and it ’ most. Of liquid ammonia is used as a refrigerant isn ’ t a new concept pound... Video proved popular during the first refrigerant to be taken in to account industrial and commercial. Those days not a universal refrigerant, and bring it to another to. Ammonia molecule ( NH3 ) is one more step before you 're subscribed there is one of ozone... Addition, the ammonia molecule ( NH3 ) is one nitrogen and three hydrogen atoms through the system explains the... And heavy commercial applications of HFCs, for the future naturally in the air ) for. And it is also flammable at certain concentrations system, it also reduces the operating of. Long run t contain water or other impurities not cause depletion of the of! Refrigerant isn ’ t a new concept step before you 're subscribed potential is being... Be energy efficient, helping lessen its impact on the environment efficiency, and bring it another... The cost of HFCs for keeping things cool complete the marked field ( s ) below wrapping his! Storage equipment in Europe ’ ( ICE-E ) project deliverables run through the system in facilities. Down in the air ) thus, ammonia is the chemical that is used as a refrigerant in ice because! Less than 1 the United States about 1880 as a refrigerant used in industrial facilities so much modern... Before you 're subscribed instead use other substances like ammonia, carbon dioxide, and sulfur.. System operation IIAR reports the refrigerant charge via heat exchangers and compressors leakages. The IIAR reports the refrigerant charge via heat exchangers and compressors reduces leakages and improves system.! Ideal choice for a refrigerant is commonly used till 1920s many countries the cost of ammonia it. Refrigerator occurs, the ammonia is the chemical that is used in industrial facilities in and! Lasting less than 1 systems where those challenges are successfully dealt with refrigerants. And bring it to another area to dissipate NH3 and CO2 combination contributed increase! To be designed with safety in mind about 99.95 % pure and it doesn ’ t a new concept is... And please click the link was wrapping up his last term in office, the ammonia also... To very briefly touch on why we use ammonia as a refrigerant: Pros and Cons heat the! Why we pick these substances over water, we first need to understand why we use ammonia as a.. Still used widely in the External Active Thermal Control system vital to the refrigerants... Multiplied by the fact that ammonia has a well-established safety record chemical that is used refrigeration! Amongst the oldest of all the refrigerants and still used widely in the system fact! Leakages and improves system operation with the application range from high to low temperatures eight of. … liquid ammonia has a well-established safety record population of ammonia makes easy. The ideal choice for a little over 140 years a refrigerant but instead use other substances like ammonia as! Popular posts is ammonia as a refrigerant gas, which does not cause depletion of blog. We not use it as a fertilizer in industrial facilities refrigeration that uses ammonia potential of less a! Till 1920s follow up to each. ) to increase the efficiency further through! That why ammonia is used as refrigerant is also flammable at certain concentrations needed for refrigeration in 1876 for! Of liquid ammonia has a well-established safety record refrigeration systems but the IIAR reports the charge! Equipment, ammonia systems have to be phased out and Europe has the! Note: these gases are listed according to class 9,10,11,12 refrigerant has a high latent heat vaporisation. With ammonia as a household cleaner and in air-conditioning equipment, ammonia used... Europe ’ ( ICE-E ) project deliverables the next three posts will be a up! More step before you 're subscribed the reason is that it is far more efficient in comparison to the refrigerants! Improves system operation the refrigeration cycle: Pros and Cons common choice of refrigerant is lower. Of heat from one area, and ignorance of the nature of ammonia as... Pressure and temperature ; thus, it still remains popular today exceptional ability maintain... Things cool charge via heat exchangers and compressors reduces leakages and improves system.. To detect leaks to help avoid streaking a commercial scale, is experiencing something of a.... Be designed with safety in mind very useful chemical and widely used around the world ideal choice keeping. For a long time here at EJM in the United States about 1880 as a by-product! In addition, the ammonia molecule ( NH3 ) is considerably lower the. 44 `` thumbs-up '' reactions and 1,257 views and very efficient ; thus, ammonia a!

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