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10 Cards in this Set
- Front
- Back
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The recovery system which employs a single exchange unit consisting of a casing split into two sections and a segmented rotating wheel 300 mm (12
in) thick and 1 to 3.7 m (3 to 12 ft) in diameter is called a a) runaround system b) thermal wheel c) heat pipe d) heat valve e) heat pump |
B
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The recovery system which has a capillary wick structure consisting of fine circumferential striations machined on its external surface is called a a) heat valve b) runaround system c) heat pump d) thermal wheel e) heat pipe |
E
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A system consists of two finned tube heat exchangers. Where is the preconditioning coil of this system located? a) On the suction side of the pump b) On the discharge side of the 3-way mixing valve c) In the duct work handling the ventilation into the process d) At the end of the charging unit e) In the ductwork handling exhaust air |
C
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What is the name of the system that consists of two finned tube heat exchangers? a) runaround system b) heat valve c) heat pump d) heat tube e) thermal wheel |
A
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The system which runs as a refrigeration system used for air conditioning purposes in the summer and can be modified to run in reverse in cooler weather is called a a) runaround system b) heat valve c) heat pump d) heat pipe e) thermal wheel |
D
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The system which makes use of a coil installed underground below frost levels is called a a) runaround system b) thermal wheel c) heat tube d) heat pump e) heat pipe |
D
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Cross contamination is a disadvantage for which of the following systems? a) A runaround system b) A heat pipe c) A heat tube d) A thermal wheel e) A heat valve |
D
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Which of the following is not an advantage for a runaround system? a) Installation costs are comparatively low. b) The system is readily adaptable to retrofit applications. c) Piping is not required in the system. d) The exhaust and ventilation streams can be remote. e) Maintenance is relatively simple. |
C
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The fact that the system can be treated against corrosion is an advantage for which system? a) A run around system b) A heat pipe c) A heat pump d) A thermal wheel e) A heat valve |
B
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When is the capacity of a heat pipe at a maximum? a) When the system is level b) When the evaporator is raised above the horizontal c) When the system is placed vertically with the evaporator on top d) When the system is placed vertically with the condenser on top e) When the evaporator is lowered below the horizontal |
E
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