Refrigeration and Air Conditioning Technology (MindTap Course List)
8th Edition
ISBN: 9781305578296
Author: John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson
Publisher: Cengage Learning
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Textbook Question
Chapter 25, Problem 26RQ
The function of the evaporator pressure regulator is to
A. maintain a constant evaporator pressure.
B. prevent a minimum pressure in the evaporator.
C. maintain a constant evaporator temperature.
D. prevent a maximum pressure in the evaporator.
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What kind of circuit balancing valve is used in the hot and chilled water piping?
a. balancing globe valve
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To determine:
The type of change in suction pressure when evaporator experiences a heat-load increase.
Chapter 25 Solutions
Refrigeration and Air Conditioning Technology (MindTap Course List)
Ch. 25 - Which is not a basic component of the compression...Ch. 25 - Describe modulating fluid flow.Ch. 25 - The purpose of the crankcase pressure-regulating...Ch. 25 - Describe the function of an electric evaporator...Ch. 25 - Prob. 5RQCh. 25 - Briefly describe the function of a...Ch. 25 - Two types of relief valves are_______and ______.Ch. 25 - Why is low-ambient control necessary?Ch. 25 - Which is not a method of low-ambient control on...Ch. 25 - Low-pressure switch
Ch. 25 - High-pressure switchCh. 25 - Low-ambient(switch)Ch. 25 - Oil safety switchCh. 25 - What is the function of the current sensing relay...Ch. 25 - Why is there a time delay in an oil safety...Ch. 25 - What is off-cycle defrost?Ch. 25 - Two types of off-cycle defrost are______and...Ch. 25 - Two methods for accomplishing defrost on...Ch. 25 - Filter drierCh. 25 - Heat exchangerCh. 25 - Suction accumulatorCh. 25 - ReceiverCh. 25 - Prob. 23RQCh. 25 - Prob. 24RQCh. 25 - What will happen if the float in an oil separator...Ch. 25 - The function of the evaporator pressure regulator...Ch. 25 - What is the function of the oil return hole or...Ch. 25 - What is the function of the pressure equalization...
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- Describe a direct-expansion versus a flooded evaporator.arrow_forwardQuality means _________ when referring to a refrigerant.arrow_forwardWhich of the following statements is not true about orifice tube systems? The suction line must be cool to the touch from the evaporator outlet to the compressor. The liquid line from the condenser outlet to the evaporator inlet should be cool. The evaporator should feel very cold. The accumulator must be cool to the touch.arrow_forward
- Which of the following metering devices is used in low-pressure chillers? A. A low- or high-side float B. A capillary tube C. An automatic expansion valve D. A thermostatic expansion valvearrow_forwardThe approach temperature for the evaporator is A. the difference between the suction and head pressures converted to temperature. B. the difference between the refrigerant boiling temperature and the suction-line temperature. C. the difference between the refrigerant boiling temperature and the inlet water temperature. D. the difference between the refrigerant boiling temperature and the leaving-water temperature.arrow_forwardWhat would happen if a hydronic system was installed without an expansion tank? A. The relief valve would open B. The system may flood constantly C. There would be no room for heated water to expand D. All the abovearrow_forward
- When there is an excess potential energy during the fluid flow, it can be stored using O a. pressure relief valve. O b. pressure reducing valve. O C. accumulator. O d. pressure absorbing valve.arrow_forwardWhat is the purpose of the fins on an finned evaporator? A. Provides extra strength B. None of the above C. to protect evaporator tubing D. better heat transferarrow_forwardWhich one of the following is a component of a centrifugal compressor? a. Suction valve b. Nozzle Impellor d. Cylinderarrow_forward
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