Study guides, Class notes & Summaries

HVAC EPA 608 CORE Exam Test Questions With Answers |Verified | ALREADY PASSED what is CFCs? - ANSWER Chlorofluorocarbons (Chlorine, Fluorine, and carbon) What is HCFCs? - ANSWER Hydrochlorofluorocarbons (hydrogen, chlorine, fluorine, and carbon) What is ASHRAEs? - ANSWER The American Society of Heating Refrigerating and Airconditioning Engineers. A global professional association seeking to advance heating, ventilation, airconditioning and refrigeration systems. What is the gre...

HVAC: EPA 608 Certification Study Guide Questions With Verified Solutions| ALREADY PASSED. UPDATED Are there drop-in replacements for R-12 systems? Why or why not? - ANSWER No because the new refrigerants are incompatible with the oils and lubricants used in R-12 systems. What type of oil is used in R-134a and what oils will it mix with? - ANSWER Ester based oils and they do not mix with other oils What type of lubricant is used with HCFCs? - ANSWER Alkylbenzene lubricant Wh...

HVAC (EPA Certification Exam Section 608) Questions With Verified Solutions | ALREADY PASSED | LATEST REVISED UPDATE What does a metering device do? - ANSWER The metering device causes a reduction in pressure, and therefore a reduction in saturation temperature. What is absorbed in the evaporator? - ANSWER Heat is absorbed in the evaporator. What happens in the evaporator? - ANSWER Heat is absorbed in the evaporator and causes the refrigerant to boil from liquid to vapor. At...

HVAC: EPA 608 Certification Study Guide Complete Study Questions And Answers HVAC: EPA 608 Certification Study Guide Complete Study Questions And Answers

HVAC: EPA 608 Certification Study Guide with complete solutions

Are there drop-in replacements for R-12 systems? Why or why not? - No because the new refrigerants are incompatible with the oils and lubricants used in R-12 systems. What type of oil is used in R-134a and what oils will it mix with? - Ester based oils and they do not mix with other oils What type of lubricant is used with HCFCs? - Alkylbenzene lubricant What is difference b/w ternary blend a azeotropic blend? - Ternary blends are three-part mixtures whereas azeotropic blends are blends of...

HVAC: EPA 608 Certification Study Guide with complete solutions

HVAC: EPA 608 Certification Study Guide | 100 Questions & Answers 2023

HVAC: EPA 608 Certification Study Guide | 100 Questions & Answers 2023