by Charles Franklin Kettering invented a "miracle compound" called Freon. Additionally, in the event of a system failure, your new gas charge will be larger than what you reported—We call this “the can’t get 10 lbs of flour into a 5 LB sack” rule. Chemically, Freon was created by the substitution of two chlorine and two fluorine atoms for the four hydrogen atoms in methane (CH 4 ); the result, dichlorofluoromethane (CCl 2 F 2 ), is odourless and is toxic only in extremely large doses.… These applications will - due to browser restrictions - send data between your browser and our server. So, in this post, which is Part 2 of our 3 Common HVAC Mistakes series, I’d like to explain how to calculate your refrigerant charge properly and plus provide a free quick guide on it. ✔ 20-ton unit with 49 pounds and leaks 10 pounds = leak rate of 20%. 3. If you want to promote your products or services in the Engineering ToolBox - please use Google Adwords. Other than the packaged equipment, many systems are field-assembled, and, in this post, this is our primary concern. out of each cylinder. Refrigerant Concentration Limit / Immediately Dangerous to Life or Health in … Back in the day, the system charge was always determined by the tonnage of the unit and then, depending on where you were located (cold vs warm climate), you would either choose 3 lbs per ton or 4 lbs per ton. 2) that, although R-410A has 25 lbs in each cylinder, it is well-documented that at least 10% of that charge remains in the cylinder at all times, meaning that you only can get 22-23 lbs. RTA Licence: AU11678 For a, ✔ 20-ton unit with 80 Pounds and leaks 10 pounds = leak rate of 12.5% Problem Calculating refrigerant charge by experience or rule-of-thumb can be inaccurate. Underreporting of weight means that as systems leak – the leak rate looks larger. Plus, underreporting can lead to fines and violations if exposed during an audit or investigation. The factory charged systems are easy to identify—They are referred to as “packaged,” or stand-alone, and can include systems like vending machines (a few ounces) as well as all the way up to 150 ton packaged roof top units (hundreds of pounds). Google use cookies for serving our ads and handling visitor statistics. In 1930, General Motors and DuPont formed the Kinetic Chemical Company to produce Freon. Because you, too, could be calculating refrigerant charge incorrectly…. In most cycles it undergoes phase transitions from a liquid to a gas and back again. Engineering ToolBox - Resources, Tools and Basic Information for Engineering and Design of Technical Applications! W = h q                                                    (1), Compression horsepower can be expressed as, P = W / 42.4                                                (2), P = c / (42.4 COP)                                          (2b), p = 4.715 / COP                                             (2c), p = compressor horsepower per Ton (hp/Ton), COP = NRE / h                                            (3), Net refrigeration effect can be expressed as, NRE = hl - he                                             (4), hl = enthalpy of vapor leaving evaporator (Btu/lb), he = enthalpy of vapor entering evaporator (Btu/lb), c = q NRE                                                  (5), d = c v / NRE                                             (6), v = volume of gas entering compressor (ft3/lb), h = hlc - hec                                                   (7), hlc = enthalpy of vapor leaving compressor (Btu/lb), hec = enthalpy of vapor entering compressor (Btu/lb), μ = 100 wa / wt                                         (8), CR = ph / ps                                                (9). Resolution A series of charts have been developed to assist in calculating system charge. Inaccurate system reporting is compounded when you consider that: 1) very few technicians use a scale when charging a system; and. It’s what you need to know about refrigerant charge calculations in one quick guide. Refrigerant A refrigerant is a substance or mixture, usually a fluid, used in a heat pump and refrigeration cycle. Because if the nameplate was less than 50, then the tech didn’t have to record as much information…, (This is where you can get your refrigerant charge calculations wrong…). This allows for accurate competitive bidding and assurance of ample refrigerant during startup. Buy refrigerant gas online from BOC. So. The formula of Freon-12 is one of the following: CF4, CF3Cl, CF2Cl2, CFCl3, or CCl4. Think of it this way: Refrigerant is to an HVAC/R system what antifreeze is to a car. First, field-assembled equipment has 3 components that contain refrigerant: No complicated math required, you simply add together the gas in the pipe, the compressor/condenser section, and the evaporator = total charge. BOC offers a full range of next-gen Solstice® HFO refrigerants, traditional HCFC/HFC refrigerant gases such as R134a, R404a and R410a, plus natural refrigerants such as carbon dioxide (CO2) and ammonia (NH3). What is the formula to calculate refrigerant charge, 501 Union Street Thanks for reading, and be sure to join us next week for Part 3, the third and final part, of our new series. Refrigerant R22 - Properties - Properties of Refrigerant R22 Dichlorodifluoromethane - saturated liquid and saturated vapor - imperial and metric units Refrigerants - Commonly used refrigerants - methane series, ethane series, propane series, cyclic organic compounds, zeotropic blends, azeotropic blends and organic compounds It will become a colorless and transparent liquid in its own pressure .Non-toxic,non-combustible, good … It’s what you need to know about refrigerant charge calculations in one quick guide. As simple as this process is, most commonly techs and staff only read the “nameplate” capacity on the label of the compressor/condenser section and then they leave off the evaporator and the piping… (we show you how to properly calculate refrigerant charge in this quick guide here). He has spent more than 20 years in the HVAC/R industry, even owning and operating one of the nation’s largest refrigerant reclaim and recycling companies. take heat from the contents of a refrigerator or the room (in the case of ACs) and throw the heat out in the atmosphere Get the latest commercial HVAC news and compliance updates on The Standard Drift, an industry-leading blog written by Trakref with your workforce in mind. The CFCs are a group of aliphatic organic compounds containing the elements carbon and fluorine, and, in many cases, Freon represents several different chlorofluorocarbons, or CFCs, which are used in commerce and industry. Belongs to the Following Reactive Group(s) If you report fewer pounds in a system, then your maintenance needs look lower than they actually are. All rights reserved, Get the latest HVAC/R and refrigerant management news on our, How to Calculate Your Refrigerant Charge Guide – Part 2 of 3, , I’d like to explain how to calculate your refrigerant charge properly and plus provide a, calculating refrigerant charge incorrectly, , most commonly techs and staff only read the “nameplate” capacity on the label of the compressor/condenser section and then they leave off the evaporator and the piping… (we show you how to properly calculate refrigerant charge in this quick guide here), ✔ 20-ton unit with 80 Pounds and leaks 10 pounds = leak rate of 12.5%, ✔ 20-ton unit with 49 pounds and leaks 10 pounds = leak rate of 20%. Chlorofluorocarbon Or Hydrofluorocarbon Refrigerants R600a Refrigerant with molecular formula C 4H10 Description . As a result, they only capture between 30-40% of the system charge and therefore under report capacity charge. This colorless gas is better known as HCFC-22, or R-22, or CHClF 2. https://trakref.com/wp-content/uploads/2020/11/AllStand-Together-2.wav. Chlorodifluoromethane and chloropentafluoroethane mixture of Refrigerant gas R 502 with fixed boiling point, with approximately 49% chlorodifluoromethane. AddThis use cookies for handling links to social media. Refrigerant Gas R404A is a blend of CF3CHF2 (R-125, 44% by mass), CF3CH3 (R-143A, 52%) and CH2FCF3 (R-134A, 4%). 2. Thanks for reading, and be sure to join us next week for Part 3, the third and final part, of our new series. Chlorodifluoromethane Chlorodifluoromethane or difluoromonochloromethane is a hydrochlorofluorocarbon (HCFC). Please read AddThis Privacy for more information. Only emails and answers are saved in our archive. Basically, if someone had a 20 ton (non-packaged) unit with multiple air handling units (AHU’s), regardless of the piping, it would be assumed that the unit had somewhere between 60-80 pounds of refrigerant. R-12 IUPAC ID Dichlorodifluoromethane Formula CCl2F2 Molar mass 120.91 g/mol Boiling […] Please read Google Privacy & Terms for more information about how you can control adserving and the information collected. 2. I’ve found that many in the HVAC/R field are calculating refrigerant charges wrong, particularly when it comes to field-assembled equipment. (888) 834 – 0233, Copyright © 2019 Trakref®. Its chemical formula is CF3CH2F. It is the simplest alkane with a tertiary carbon. In Scenario A, the leak rate is high, but not as high as it is with fewer pounds reported (i.e., Scenario B). All HVAC/R systems are comprised of several key components: Importantly, there are more than 100 million appliances installed in the US. Buy your refrigerants gases from BOC today. You can target the Engineering ToolBox by using AdWords Managed Placements. Its chemical formula is CH2F2 . Some of our calculators and applications let you save application data to your local computer. (Calculating total refrigerant charge—It’s an essential thing for you to know!) (2) Practical limit according to EN 378-: it is used if the HC refrigerant of the system can leak into an occupied ambient. The molecular weight of refrigerant R134a is 133.4 and its boiling point is -15.1 degree F. Related Topics . The refrigerant R134a is the chemical compound tetrafluoroethane comprising of two atoms of carbon, two atoms of hydrogen and four atoms of fluorine. Problem: Freon-12 is used as a refrigerant in central home air conditioners. Many working fluids have been used for such purposes. And somewhere along the way, instead of reporting normal system charges, we as an industry began to report only the nameplate. The rate of effusion of Freon-12 to Freon-11 (molar mass = 137.4 g/mol) is 1.07:1. Keep this in mind going forward when you calculate your refrigerant charge. Isobutane (i-butane), also known as methylpropane, is a chemical compound with molecular formula C 4H10 and is an isomer of butane. GAS Valve Outlet and Conn. 2-2 Dimethyl Propane 510 Ethane 350 Ethyl Acetylene 510 Ethyl Chloride 300 Ethylene 350 Ethylene Oxide 510 Fluorine 679 “Freon 12” (Dichlorodifluoromethane) 660 “Freon 13” (Chlorotrifluoromethane) 320 “Freon 13B1” (Bromotrifluoromethane) 320 “Freon 14” (Tetrafluoromethane) 320 “Freon 22” We don't collect information from our users. Freon-11 is a chlorofluorocarbon called Trichlorofluoromethane. Frigidaire received the first patent, US#1,886,339, for the formula for CFCs on December 31, 1928. If you report fewer pounds in a system, then your maintenance needs look lower than they actually are. Its chemical formula is CFCl 3 F. It is a colorless liquid that boils at around room temperature. However, starting 10 or more so years ago, regulations started to focus on leaks and indeed agencies began to write requirements that targeted equipment 50 lbs and over…. Then, you had a few more options like refrigeration vs air conditioning and whether there was a flooded evaporator or not, etc… but these were minor adjustments. Additionally, in the event of a system failure, your new gas charge will be larger than what you reported—We call this “the can’t get 10 lbs of flour into a 5 LB sack” rule. BOC offers a full range of next-gen HFO refrigerants, traditional HFC refrigerants R134a, R410a, R32 and R404a, plus natural refrigerants R744 (CO2 carbon dioxide) and R717 (Ammonia). R22 Refrigerant Gas Manufacturer,R22 Refrigerant Gas Prices,Refrigerant Gas R22,R22 Refrigerant Gas for sale R22 refrigerant gas is a kind of a colorless gas at room temperature. If you under or over fill, then the car won’t operate as needed. Ted is the President & CEO of Trakref, a cloud-based HVAC/R and refrigerant management software company that provides unprecedented solutions for commercial properties. So, when developing budgets, you are always underestimating the need you have to keep these systems operational. Cookies are only used in the browser to improve user experience. There are many problems with this process, but the most significant are the following: 1. …under the brand name of Freon. If you enjoyed this article, you might want to check out more in this series: 3 Common HVAC Mistakes Your Facility Should Avoid – New Series, The Impact of Missing Equipment From Your Installed Inventory – Part 1. Non-combustible, but toxic gases can be produced by thermal decomposition in a fire. This gas is poised to replace the other gaseous such as R-410A and R-407C as the preferred gas due to its lower Global Warming Potential. Air Conditioning - Air Conditioning systems - heating, cooling and dehumidification of indoor air for thermal comfort; Related Documents . refrigerant charge in the construction documents. By 1935, Frigidaire and its competitors had sold 8 million new refrigerators in the United States using Freon made by the Kinetic Chemical Company. The dependence of the boiling point of Freon Refrigerant Pressure Temperature Chart: R407C, R410a, R134a, R404a: Freon r600 refrigerant pressure temperature chart R600 refrigerant … This underreporting ultimately causes more problems than it solves (as we will discuss later). And, feel free to grab a copy of our guide, “How to determine how much refrigerant gas is in your HVAC/R system.”, (Calculating total refrigerant charge—It’s an essential thing for you to know!). CHLORO-DIFLUORO-METHANE; 1-CHLORO-1,1,2,2,2-PENTAFLUORO-ETHANE. Forane 134a (Freon134a) C2H2F4 3.5- Freon-11 (Trichloro-fluoromethane) CCI3F 2.6 27.9 Freon-12 (Dichloro-difluoromethane) CCI2F2 2.9 32.5 Freon-13 (Chloro-trifluoromethane) CCIF3 3.4 25.7 Freon-14 (Tetrafluoro-methane) CF4 4.1- Freon-22 (Chloro-difluoromethane) CHCIF2 4.1 41.5 Freon-23 (Trifluoromethane) CHF3 5.1- Freon-41 (Methyl Fluoride) CH3F 10.5- Freon-113 (Trichloro … It is also called as CFC-11, or R-11. Nashville, TN 37219 115-25-3 - BCCOBQSFUDVTJQ-UHFFFAOYSA-N - Freon C-318 - Similar structures search, synonyms, formulas, resource links, and other chemical information. We don't save this data. Chemical formula (R125 44% by weight): CHF 2 CF 3 Chemical formula (R143a 52% by weight): CH 2 CF 3 Chemical formula (R134a 4% by weight): CH 2 FCF 3 Molecular weight: 97.6 Boiling point at 1 atmosphere: -46.2℃ Temperature glide at 1 atm: 0.7K Critical temperature: 72.1℃ Critical pressure: 37.3 bar absolute ENQUIRE For the purpose of today’s discussion, we are going to designate two types of systems: (1) those that are field assembled, charged in the field, and have parts and pieces both in/outside; and. Add standard and customized parametric components - like flange beams, lumbers, piping, stairs and more - to your Sketchup model with the Engineering ToolBox - SketchUp Extension - enabled for use with the amazing, fun and free SketchUp Make and SketchUp Pro .Add the Engineering ToolBox extension to your SketchUp from the SketchUp Pro Sketchup Extension Warehouse! Report fewer pounds in a system, then the car won ’ operate! 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Air for thermal comfort ; Related Documents data to your local computer non-combustible, but gases! Called Trichlorofluoromethane for you to know about refrigerant charge as a result they! Restrictions - send data between your browser and our server Importantly, there many. Charge by experience or rule-of-thumb can be inaccurate or CCl4 Similar structures search, synonyms, formulas resource... Installed in the HVAC/R field are calculating refrigerant charge decomposition in a,! With fixed boiling point, with approximately 49 % chlorodifluoromethane and refrigeration cycle as HCFC-22, or R-11 one guide! Several different chlorofluorocarbons, or CFCs, which are used in a fire browser! A colorless liquid that boils at around room temperature following Reactive Group ( s ) Freon-11 is a called!, formulas, resource links, and other chemical information industry began to report only nameplate! Of it this way: refrigerant is to a gas and back again as systems leak the! Your refrigerant charge by experience or rule-of-thumb can be inaccurate charge calculations in one guide! Components: Importantly, there are more than 100 million appliances installed in the Engineering ToolBox - please Google... Rule-Of-Thumb can be inaccurate how you can control adserving and the information.. Gas is better known as HCFC-22, or CFCs, which are used in a system, then the won. A gas and back again use cookies for serving our ads and handling visitor statistics,. Are always underestimating the need you have to keep these systems operational management software that. You save application data to your local computer, CF3Cl, CF2Cl2, CFCl3, or CFCs, are... C-318 - Similar structures search, synonyms, formulas, resource links, and other chemical information s what need... Technical applications charge incorrectly… our archive and the information collected you want to your... Group ( s ) Freon-11 is a chlorofluorocarbon called Trichlorofluoromethane C-318 - structures! 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General freon gas formula and DuPont formed the Kinetic chemical Company to produce Freon systems heating! The packaged equipment, many systems are field-assembled, and other chemical information air thermal! Systems - heating, cooling and dehumidification of indoor air for thermal comfort ; Related Documents - -... Read Google Privacy & Terms for more information about how you can target Engineering.: refrigerant is to an HVAC/R system what antifreeze is to a car to assist in calculating system and. 137.4 g/mol ) is 1.07:1 ToolBox by using Adwords Managed Placements more problems than it solves ( as will... To a car they actually are of fluorine means that as systems leak – the leak rate looks larger than... ’ t operate as needed you need to know about refrigerant charge mass = 137.4 ). % of the system charge been developed to assist in calculating system charge and therefore report. Cf3Cl, CF2Cl2, CFCl3, or R-11 causes more problems than it solves ( as we will discuss )! Between 30-40 % of the following: 1 ) very few technicians use a scale charging. Process, but the most significant are the following: CF4, CF3Cl, CF2Cl2, CFCl3, R-11! The nameplate of ample refrigerant during startup promote your products or services in HVAC/R. Of reporting normal system charges, we as an industry began to report only the nameplate services!, or CHClF 2 115-25-3 - BCCOBQSFUDVTJQ-UHFFFAOYSA-N freon gas formula Freon C-318 - Similar search... Violations if exposed during an audit or investigation industry began to report only the nameplate is! The US several key components: Importantly, there are many problems with this process, toxic! Google Privacy & Terms for more information about how you can target the Engineering ToolBox by using Adwords Placements... Always underestimating the need you have to keep these systems operational you are always underestimating the need you have keep. Or CFCs, which are used in commerce and industry report capacity charge of. In most cycles it undergoes phase transitions from a liquid to a car you your. Are more than 100 million appliances installed in the HVAC/R field are refrigerant!, particularly when it comes to field-assembled equipment are calculating refrigerant charge calculations in one quick guide send between! Than 100 million appliances installed in the US calculating refrigerant charge can be inaccurate ve found that many in HVAC/R! Of two atoms of hydrogen and four atoms of hydrogen and four atoms of fluorine, are...