REFRIGERANT - ορισμός. Τι είναι το REFRIGERANT
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Τι (ποιος) είναι REFRIGERANT - ορισμός

SUBSTANCE OR MIXTURE, USUALLY A FLUID, USED IN A HEAT PUMP AND REFRIGERATION CYCLE
Refrigerants; Refrigerent; R-404a; Ice substitute; Refregerant; R-401; R-507A; R-409A; R-401A; R404a; Refrigerant gas; ISCEON; MO99; R507
  • A DuPont refrigerant
  • R407C [[pressure]]-[[enthalpy]] diagram, isotherms between the two saturation lines

refrigerant         
n.
Refrigerative, cooling medicine.
refrigerant         
¦ noun a substance used for refrigeration.
¦ adjective causing cooling or refrigeration.
Refrigerant         
·adj Cooling; allaying heat or fever.
II. Refrigerant ·noun That which makes to be cool or cold; specifically, a medicine or an application for allaying fever, or the symptoms of fever;
- used also figuratively.

Βικιπαίδεια

Refrigerant

A refrigerant is a working fluid used in the refrigeration cycle of air conditioning systems and heat pumps where in most cases they undergo a repeated phase transition from a liquid to a gas and back again. Refrigerants are heavily regulated due to their toxicity, flammability and the contribution of CFC and HCFC refrigerants to ozone depletion and that of HFC refrigerants to climate change.

Refrigerants are used in a Direct Expansion (DX) system to transfer energy from one environment to another, typically from inside a building to outside (or vice versa) commonly known as an "air conditioner" or "heat pump". Refrigerants can carry per kg 10 times more energy than water and 50 times more than air.

Refrigerants are controlled substances due to 1) High Pressures (100-145 psi), 2) Extreme temperatures (-50°C to 145°C), 3) Flammability A1 class non-flammable, A2/A2L class flammable & A3 class extremely flammable/explosive and 4) Toxicity B1-low, B2-medium & B3-high, as classified by ISO 817 & ASHRAE 34.

Refrigerants must only be handled by qualified/certified engineers to the relevant classes of refrigerant eg in the UK C&G 2079 if A1 class PLUS C&G 6187-2 if A2/A2L & A3 class refrigerants.

Παραδείγματα από το σώμα κειμένου για REFRIGERANT
1. More refrigerant requires more coils, inside and out, so modifications could be required throughout a home.
2. CFC–11 (a foam–blowing agent) can last 11 years; CFC–12 (a refrigerant) 100 years.
3. The chiller also relies on a non–ozone depleting refrigerant making it a preferred system in the context of growing concerns over environmental protection.
4. Only a few air pollutants were detected, such as methanol, a wood alcohol, isobutylene, a flammable gas, and freon, a refrigerant.
5. The system developed by Ice Energy Inc. consists of a large plastic attachment for commercial air conditioning units that is filled with water, frozen overnight then used to cool refrigerant during the day.