Search results
Results From The WOW.Com Content Network
Reclamation, as it refers to refrigerants, is one of three components in a refrigerant management process. The EPA defines refrigerant reclamation as "Reclaim refrigerant means to reprocess refrigerant to at least the purity specified in appendix A to 40 CFR part 82, subpart F (based on AHRI Standard 700–1993, Specifications for Fluorocarbon ...
A refrigerant is a working fluid used in the cooling, heating, or reverse cooling/heating cycles of air conditioning systems and heat pumps, where they undergo a repeated phase transition from a liquid to a gas and back again.
Air Conditioning, Heating and Refrigeration Institute - In particular, standard 700 helps define levels of refrigerant reclamation, and standard 740 defines standards for recovery equipment; ASHRAE - In particular, standard 15 helps define refrigerant safety groups; HVAC Technical Standards Organizations; Occupational licensure; Ozone depletion
A liquid (glycol based) chiller with an air cooled condenser on the rooftop of a medium size commercial building. In air conditioning systems, chilled coolant, usually chilled water mixed with ethylene glycol, from a chiller in an air conditioning or cooling plant is typically distributed to heat exchangers, or coils, in air handlers or other types of terminal devices which cool the air in ...
For spontaneous recovery to occur, the conditioning of the memory that is recalled later needs to be stored in long-term memory. It is a process where the semantics and associations of the certain memory are so ingrained that they can become habitual or automatic to the person. For example, all the procedures needed to ride a bicycle are not ...
In many types of processes, combustion is used to generate heat, and the recuperator serves to recuperate, or reclaim this heat, in order to reuse or recycle it. The term recuperator refers as well to liquid-liquid counterflow heat exchangers used for heat recovery in the chemical and refinery industries and in closed processes such as ammonia-water or LiBr-water absorption refrigeration cycle.
Dichlorodifluoromethane (R-12 or CFC-12), the most commonly used Freon brand refrigerant prior to its ban in many countries in 1996 and total ban in 2010. 1,1,1,2-Tetrafluoroethane (R-134a or HFC-134a), one of the main replacements for the formerly widespread R-12. Opteon halogenated olefins now replacing Freons in many applications.
In refrigeration systems, subcooling the refrigerant is necessary to ensure the completion of the remaining stages of the refrigeration cycle. The subcooling stage provides certainty that the refrigerant is fully liquid before it reaches the next step on the cycle, the thermal expansion valve , where the presence of gas can be disruptive. [ 1 ]