Air cooled condenser Study guides, Class notes & Summaries

Heat which can cause a change in temperature of a substance is called; - Sensible Heat Heat added to a substance without a rise in temperature;(example: liquid refrigerant to gas) this process is called? - Latent Heat of Vaporization Heat added to the refrigerant in a vapor state after the evaporation process is called; - Superheat A scroll compressor move refrigerant by means of; - Involute spirals The movement of heat by way of fluid(of air) is called; - Convection The movement of heat t...

EPA Type 2 Questions and Answers Already Graded A Heat pumps that have been retrofitted from R22 to R407C should be leak checked with: pressurized nitrogen When a new system has been assembled, the first thing to do is: pressurize the system with inert gas and leak check EPA regulations require that leaking commercial or industrial process refrigeration equipment must be repaired when the leak rate exceeds______ of the charge per year. 35% Prior to replacing the condenser coil in a high pres...

110. Water and moisture is a serious problem in a refrigerant system, how to avoid: A. Use of fins in refrigerant line B. Proper evacuation at the charging of the system C. Proper handling of refrigerant and oil to avoid exposure to mixture D. Use of high viscosity oil in the connection - Answer-B. Proper evacuation at the charging of the system 111. The most important requirements for a good evaporator is that: A. Air or liquid refrigerant can be used as required by the medium b...

ESCO Air Conditioning Exam Questions with Answers Latest Update (100% Solved) Heat which causes a change in temperature of a substance is called correct answers Sensible heat Heat added to a substance without a rise in temperature correct answers Latent heat Heat added to the refrigerant in a vapor state after the evaporation process is called correct answers Superheat Scroll compressor move refrigerant by correct answers Involute Spirals The movement of heat by way of fluid is called corr...

HVAC Test 1 Latest Update Graded A+ Absorption A refrigeration cycle where input energy is heat Adiabatic without gain or loss of heat Air Conditioning controlling air temperature humidity and quality Air Cooled Condenser a heat exchanger that transfers building heat to outdoor air Air Handler air moving equipment that can change air temperature humidity and quality BTU British thermal unit. 1 BTU will increase the temperature of 1 lb of water 1 degree F BTUH Rate of heat fl...

HVAC EXCELLENCE EXAM QUESTIONS AND ANSWERS 100% PASS Heat which causes a change in temperature of a substance is called - Correct Answer ️️ -sensible heat, Heat added to a substance without a rise in temperature; (example: liquid refrigerant to gas) this process la called? - Correct Answer ️️ -latent heat Heat added to the refrigerant in vapor state after the evaporation process is called, - Correct Answer ️️ -superheat A scroll compressor moves refrigerant by means of; - Cor...

The weight of water vapor in a given amount of air (Grains per cubic foot) - Answer-Absolute Humidity Pressure measured with a base of zero - Answer-Absolute Pressure A temperature scale using absolute zero as a reference - Rankin or Kelvin Scale (may be measures in degrees C or F) - Answer-Absolute Temperature Theoretical temperature at which all molecular activity ceases = -273.16 C or -456.69 F - AnswerAbsolute Zero By approximately how much (%) does a start capacitor increase motor tor...

HVAC Excellence Study Guide With Accurate Solutions. Heat which causes a change in temperature of a substance is called. - answersensible heat. Heat added to a substance without a rise in temperature; (example: liquid refrigerant to gas) this process is called? - answerLatent heat Heat added to the refrigerant in a vapor state after the evaporator process is called. - answerSuperheat A scroll compressor moves refrigerant by means of. - answerInvolute spirals The movement of heat by way o...

What is the movement of heat through space called? - Answer-Radiation A refrigerant release heat when - Answer-It condenses Why is it desirable for refrigerant in the suction line to be slightly superheated? - Answer-To insure liquid refrigerant does not enter the compressor A 30 pound cylinder of reclaimed R-22 refrigerant has been stored over night at 70 degrees F. What should be the approximate pressure in the cylinder? - Answer-121 psig 14.7 psia( pouds per square inch absolute) is - A...

HVAC pre-test questions and answers graded A+ Two basic categories of chillers are Compression cycle and absorption The 5 requirements for comfort are temperature, humidity, filtration, ventilation and _______ Circulation The primary function of an expansion device is to: Reduce pressure on liquid refrig, regulate flow, lower the boiling point below the temp of the load All of the above The wet-bulb depression is The difference between the dry-bulb and wet-bulb temperatures T...