In a refrigeration system - Study guides, Class notes & Summaries

fdny z51 rmo questions answered 2023 verified graded A+ already passed!the efficiency of the refrigerant cycle is affected by the operation of the condenser. Of the following, a more efficient centrifugal compressor operation results from lowering the condenser pressure In most semi hermetic compressors, the suction vapor is used for cools the motor The amount of refrigerant that flows through the orifices of an economizer is determined by the difference between the high side an...

What date was the sale of CFC's & HCFC's restricted to technicians certified in refrigerant recovery? - Correct answer-November 14, 1994 Section 608 of the Federal Clean Air Act requires technicians to what? - Correct answer-Recover all refrigerants. The objective of the Clean Air Act is to protect what? - Correct answer-The earth's stratosphere. HFC's - Correct answer-HydroFlouroCarbon's CFC's - Correct answer-ChloroFluoroCarbon's ODP - Correct answer-Ozone Depletion Potential Which in...

rn ,thermal burn ,respiratory burn Ammonia causes cancer - answerFalse If ammonia, in liquid form, makes its way in to the eyes There is usually damage that is non- reversible resulting in blindness - answerTrue Most MSDS sheets require a rinse flush to the body eyes for a minimum of how many minutes when dealing with the chemical Donya ammonia. - answer15 minutes , 30 minutes Do you ever want to put liquid water on liquid ammonia when the refrigerant is that atmospheric conditions - answ...

ODP test Questions and Answers 2023 Chlorofluorocarbon (CFC) refrigerants consist of: Chlorine, Fluorine, Carbon What causes a CFC molecule to break down once it reaches the upper atmosphere? Ultraviolet light The Ozone layer: Reduces ultraviolet radiation. Hydrochlorofluorocarbon (HCFC) refrigerants consists of: Hydrogen, Chlorine, Fluorine, Carbon. Which of the following refrigerants causes the least amount of damage to the ozone layer? R-134a Are there...

Refrigeration technicians who violate the Clean Air Act can: - - Correct answer-Lose their EPA certification, be fined, be required to appear in Federal court. After 1995, any supplies of CFC refrigerants to service existing units in the USA can only come from: - - Correct answer-recovery and recycling. Refrigerant that is recovered can be returned to: - - Correct answer-the same system or other systems owned by the same person without restriction. Refrigerant can not be called "reclaimed...

EPA 608 Type 3 Questions and Answers Already Passed On low pressure chillers, moisture typically enters the refrigerant system through air leaks from areas with gaskets or fittings The maximum test pressure for leak testing a low pressure centrifugal is: 10 psig Leak test and repair the chiller to reduce refrigerant loss from a pruge unit on CFC-11 chiller ... A hydrostatic tube test kit is used to: determine if a tube leaks Commercial and industrial process refrigeration systems must be rep...

Commercial Refrigeration Certification Questions and Answers 100% VerifiedCommercial Refrigeration Certification Questions and Answers 100% VerifiedCommercial Refrigeration Certification Questions and Answers 100% VerifiedCommercial Refrigeration Certification Questions and Answers 100% Verified "Pump down" means to capture system refrigerant in the: A. recovery cylinder. B. compressor. C. condenser and/or liquid receiver. D. suction accumulator. - ANSWER - C. condenser and/or liquid rece...

S-12 CITYWIDE SPRINKLER SYSTEMS, S12 sprinkler test Spring 2023 S-12 CITYWIDE SPRINKLER SYSTEMS, S12 sprinkler test Spring 2023 THE __________ IS RESPONSIBLE TO MAINTAIN SPRINKLER SYS. AND TO DETERMINE QUALIFICATIONS. OWNER RECORDS OF ALL INSPECTIONS AND MX SHALL BE MAINTAINED ON PREMISES FOR A MIN. OF __________ YEARS. 3 THE BUILDING OWNER SHALL ASSIGN A(N) ____________ TO COMPLY WITH REQUIREMENTS. IMPAIRMENT COORDINATOR REGULAR MX AND MINOR REPAIRS NOT AFFECTING MORE THAN ___...

You have been told to put food in short-term refrigeration storage. What is the best temperature? - ANSWER-34-40F Where would you put grains in order to limit cross-contamination? - ANSWER-next to canned pears The chef hands Amy a plate of sautéed chicken that looks undercooked. Which food contamination is a likely danger here? - ANSWER-salmonella It is imperative that you remember which of the following things when you're developing and implementing a successful HACCP Plan? - ANSWER-...

isomass recrystalization correct answers change in surface area to volume accretive recrystalization correct answers adjacent crystals combine migratory recystalization correct answers Caused by a fluctuation in storage temperature migratory crystallization steps correct answers food warms causes food on surface to dehydrate Increases vapor pressure on the surface Moisture migrates to lower pressure when temp drops water vapor joins existing ice crystals when a product reaches ...