What is the definition of a refrigerant refrigerant Webster dictionary as "used in the refrigeration cycle or a substance like ice for direct cooling." HVAC industry will lay refrigerant may be described as some kind of fluid used in air conditioners. Many HVAC industry insiders will immediately think of CFC group substances (chlorofluorocarbons). These definitions are correct, but the refrigerant is more extensive than those substances. Water is the refrigerant used in the absorption chiller. Carbon dioxide (CO2) and ammonia (NH3) as a "natural" refrigerant known. Combustible substances such as propane and isobutane are also used as a refrigerant. For halogenated substances such as CFC, HCFC and HFC family matter, it is widely welcomed by the refrigerant. ASHRAE Standard 34 "refrigerant Designation and Safety Classification" lists more than 100 kinds of refrigerants, although many of them are not used in conventional commercial HVAC. The refrigerant is a chemical substance. Some substances are considered refrigerants (eg R-141b) Xuzhou used central air conditioning prices, in fact it is widely used in applications such as blowing agents, in fact, rarely used for cooling applications. CFC refrigerants once thought to be safe in humans and the planet, but in the mid-1980s it was discovered, is severely damaging the Earth's ecology. In the design of the building, the refrigerant from the once rarely discussed, suddenly became a major consideration for designers. When the air conditioning HVAC equipment manufacturers to add fluoride refrigerants as an important market selling point, mostly public that goes rational po po said. This makes the equipment procurement decision-makers often at a loss. Although the CFC issue has been very clear, but there are many issues that need explanation. Beijing Jia-dimensional refrigeration hope to provide a detailed knowledge of the refrigerant, the refrigerant to affect our business and personal lives to strengthen understanding of the principles of selection of cooling capacity are: air conditioner cooling capacity should be slightly larger than the cooling load of the room, the room The heat load should take into account the orientation of the room's walls and roof insulation case Xuzhou hand air conditioning assignment, as well as an indoor heat source, including the number of personnel. Example: a 16 m2 bedroom or living room, with a much needed cooling capacity of the air conditioner? Common room cooling load recommended value 115-145W / m2, taking the middle value 130 W / m2 basis for calculation, the cooling load = 130 × 16 = 2080W. Since the actual cooling air conditioner lower than the nominal value of 8% used air conditioning, so the name of the selected air conditioner cooling capacity must be greater than 2080 ÷ 0.92 = 2260W. Selection of nominal cooling capacity of the air conditioner should be about 2300 W. For air-conditioning effect demanding room cooling load should take 160-180 W / m2. Here mention about watts (W) in the past with a cooling capacity of the unit kcal / hour relationship (kcal / h) between: 1W = 0.86kcal / h; 1kcal = 1.16W. Japanese power conditioning repair is commonly used compressors (horsepower) to represent the value of cooling capacity, it is the habit of the past, is not exact, because the coefficient of performance of the plant and the product is different in different periods of Xuzhou hand air conditioning maintenance, but generally horsepower Number and cooling capacity has the following relationship: 0.5 unit cooling capacity 1600-2000W 0.75 匹 unit cooling capacity 1800-2400W 1 unit cooling capacity 2200-2800W 1.5 匹 匹 匹 3200-4000W 2 unit cooling capacity refrigeration unit 4000-5000W amount of refrigerant in air conditioners shift complement machine, as long as the control operating specifications do start running after refrigeration good, without adding refrigerant. But for the use of micro-leakage or shift due to slow movement when emptying the refrigerant will trace reduce or shift in the pipeline due to factors such as longer, the air conditioner in the running for some time can not meet the four conditions of normal operation that the pressure is lower than 4.9kg / (mm) 2 pipe frosting; Current reduction; the air temperature inside the machine does not conform to come, it would have to replenish the refrigerant. Xuzhou recycling second-hand air conditioning, refrigeration provided by Xuzhou Sheng Erda 圣尔达 Refrigeration Electrical Services Limited. Xuzhou 圣尔达 Refrigeration Electrical Services Limited (xzktw.com) strong, credible, in Xuzhou heat exchangers, refrigeration and air conditioning equipment industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Sheng Erda refrigeration and you hand into the brilliant, for a better future!