Refrigeration study guide - Study guides, Class notes & Summaries

HVAC BOMA 501 Study Guide Latest Update Graded A+ Dual Duct System A system in which hot air and cold air are supplied by separate ducts and mixed at each controlled space to provide the desired supply air temperature. This method consumes a great deal of energy. Muiltizone System an a/c system in which the zone control is obtained by mixing hot and cold air at the unit in response to a room thermostat Load Calulations take the sensible heat and the latent heat into consideration which o...

HVAC: EPA 608 Certification Study Guide Questions and Answers | Latest Version | 2024/2025 | Rated A+ Are there alternative refrigerants that can be directly used in systems originally designed for R- 12? Why or why not? No, because these new refrigerants are not compatible with the lubricants and oils used in R- 12 systems. Explanation: The oils and lubricants in R-12 systems cannot properly interact with newer refrigerants, making direct replacements unfeasible. What type of o...

________ heat causes a change in temperature. Ans: Sensible ________ heat causes refrigerant to change state. Ans: Latent ________ is being removed when a vapor is changing into a liquid Ans: Latent heat of condensation ________ is being added when a liquid is changing into a vapor. Ans: Latent heat of vaporization The ________ increases the pressure and temperature of the refrigerant. Ans: Compressor _________ use an external drive motor. Ans: Open Compressors Open compressors can l...

Difference between a substance melting point and freezing point Ans: Adding or Subtracting latent heat 40 lbs of pressure added to liquid refrigerant would have what effect on its boiling Ans: Boil at a higher temperature Amount of heat added to 1 pound of water to raise it one degree is a Ans: BTU What causes the fastest rate of temp transfer between two objects Ans: A 75 degree differential _______ best describes sensible heat Ans: Superheat A low side gauge reading of zero psig best...

recovery process using a self-contained refrigerant recovery unit to draw or push the refrigerant out of the circuit. Ans: Active Recovery Recover process that makes use of the system pressure and/or the system compressor to push the refrigerant out. the refrigerant must be captured in a non pressurized container. Ans: Passive Recovery A Poisonous colorless gas that can be generated by the burning of refrigerant gases. The gas had an oder much like that of freshly cut hay. As it enters...

Texas LP Gas Examination Study Guide Questions and Answers Appliance - Any device that utilizes gas as a fuel or raw material to produce light, heat, power, refrigeration, or air conditioning.

Refrigeration Study Guide 2 Questions and Answers 100% Solved ________ heat causes a change in temperature. Sensible ________ heat causes refrigerant to change state. Latent ________ is being removed when a vapor is changing into a liquid Latent heat of condensation ________ is being added when a liquid is changing into a vapor. Latent heat of vaporization The ________ increases the pressure and temperature of the refrigerant. Compressor _________ use an external drive motor. Open Co...

Refrigeration System Study Guide 3 – Qs And As

Refrigeration Study Guide Questions and Answers 100% Solved Difference between a substance melting point and freezing point Adding or Subtracting latent heat 40 lbs of pressure added to liquid refrigerant would have what effect on its boiling Boil at a higher temperature Amount of heat added to 1 pound of water to raise it one degree is a BTU What causes the fastest rate of temp transfer between two objects A 75 degree differential _______ best describes sensible heat Superheat A l...

Refrigeration Study Guide Questions and Answers 100% Solved recovery process using a self-contained refrigerant recovery unit to draw or push the refrigerant out of the circuit. Active Recovery Recover process that makes use of the system pressure and/or the system compressor to push the refrigerant out. the refrigerant must be captured in a non pressurized container. Passive Recovery A Poisonous colorless gas that can be generated by the burning of refrigerant gases. The gas had a...