One ton of refrigeration - Study guides, Class notes & Summaries

HVAC FINAL EXAM QUESTIONS AND ANSWERS ALL CORRECT.docx Which of the following would have the greatest effect on the heat content of the refrigerant? A)The refrigerant's humidity B)The refrigerant's state C)The refrigerant's temperature D)The refrigerant's pressure - Correct Answer B) The refrigerant's state A mechanical refrigeration system cools a room by: - Removing heat from the room. The four types of cooling mechanisms are: - Evaporative, Thermoelectric, Absorption, Mecha...

Upflow Furnace: : Is used to describe furnaces that stand upright and blow air upward. These systems are designed for first floor installation with attic ductwork or basement installation with ductwork positioned below the first floor. Low boy furnace: : Similar to Upflow except the furnace is shorter so it can fit in basement with low ceilings. Down flow furnace: : Furnace goes into the attic and pushes air down through vents. Ductwork may be in a concrete slab floor or a crawl spa...

1% concentration of ammonia is equal to what in parts per million - Answer-10,000 ppm 1/2 % of ammonia is it deadly concentration - Answer-True (5,000)ppm Ammonia is what on the pH scale - Answer-11.6 More than 100 pounds release of NH3 in 24 hours is a reportable for release . - Answer-True There are four primary types of injury with exposure to liquid ammonia. Please list all 4 - AnswerDehydration burn ,chemical burn ,thermal burn ,respiratory burn Ammonia causes cancer - Answer-False If...

HVAC EXAM QUESTIONS AND ANSWERS 100% SOLVED GRADED A+ LATEST UPDATE 2024 Heat Transfer Moves from one substance to another as well as between molecules of a substance, temperature is the driving force Temperature The level of heat or heat intensity, measured with thermometers Heat Is the motion of molecules, and travels from a warm substance to a cold substance Conduction Energy travelling from one molecule to another, involves direct contact Radiation Passes through air and heats the ...

EPA 608 Type 3 exam with 100% Complete Solutions. 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 ...

RETA CARO Chapter 1 Exam Questions With Verified Solutions Purpose of a Refrigeration System Achieve or maintain proper temperatures in a refrigeration process used for cooling/freezing applications Ton of Refrigeration Rate BTUs transfer per unit time 288,000 BTUs/24 Hours 12,000 BTUs/12 Hours 200 BTUs/1 Minute rate of refrigeration or cooling Pressure Force per unit area. PSIA Absolute pressure; measures pressure from zero pressure PSIG Gauge pressure, uses atmo...

HVAC Exam Questions With Verified Solutions. Heat Transfer - answerMoves from one substance to another as well as between molecules of a substance, temperature is the driving force Temperature - answerThe level of heat or heat intensity, measured with thermometers Heat - answerIs the motion of molecules, and travels from a warm substance to a cold substance Conduction - answerEnergy travelling from one molecule to another, involves direct contact Radiation - answerPasses through air and ...

If a natural gas piping system fails a pressure test, the technician must re-pressurize the system and check for leaks with? - Answer-soap bubbles a pressure relief valve is installed to? - Answer-avoid exceeding the system limits In a refrigeration system, what must be installed at 10' intervals on the suction line if the compressor is above the evaporator? - Answer-Trap What occurs if a 3 amp load is connected to the secondary winding of a 24 volt, 40 V.A. transformer? - Answer-Transfor...

Refrigeration license review Exam Questions With Verified And Updated Solutions. At the condenser refrigerant enters as - answerhigh pressure gas and leaves as high pressure liquid If you were running three compressors, - answerhighly superheated vapor describes the state of the refrigerant leaving the third compressor the state of refrigerant as it leaves the compressor is (blank) and as it leaves the condenser is (blank) - answercompressor-super heated vapor condenser- warm sub-cooled...

Two locations where a cold air return should be installed - open area of a wall and low to the ground Which of the following is the law of thermodynamics? - heat moves toward a place with lower intensity Sensible heat describes - how hot something feels Latent heat is measured in - british thermal units What is the amount of heat energy required to evaporate 1 pound of water? - 970 btu In an air conditioning system and refrigeration system, what occurs in the evaporator? - the refrigeran...