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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Chapter 3, Problem 15RQ
What is meant by desuperheating a vapor?
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Chapter 3 Solutions
Refrigeration and Air Conditioning Technology (MindTap Course List)
Ch. 3 - Name three reasons why ice melts in an icebox:...Ch. 3 - What are the approximate temperature ranges tor...Ch. 3 - One ton of refrigeration is A. 1200 Btu. B. 12,000...Ch. 3 - Describe briefly the basic refrigeration cycle.Ch. 3 - What is the relationship between pressure and the...Ch. 3 - What is the function of the evaporator in a...Ch. 3 - What does the compressor do in the refrigeration...Ch. 3 - Define a superheated vapor.Ch. 3 - The evaporating pressure is 76 psig for R-22 and...Ch. 3 - If the evaporating pressure was 76 psig for R-22...
Ch. 3 - Define the term subcooled liquid.Ch. 3 - The condensing pressure is 260 psig and the...Ch. 3 - The condensing pressure is 260 psig and the...Ch. 3 - What is meant by a saturated liquid and vapor?Ch. 3 - What is meant by desuperheating a vapor?Ch. 3 - What happens to the refrigerant in the condenser?Ch. 3 - What happens to refrigerant heat in the condenser?Ch. 3 - The metering device A. cycles the compressor. B....Ch. 3 - What is adiabatic expansion?Ch. 3 - Describe flash gas, and tell how it affects...Ch. 3 - Quality means _________ when referring to a...Ch. 3 - Describe the difference between a reciprocating...Ch. 3 - List the cylinder color codes for R-12, R-22,...Ch. 3 - Define enthalpy.Ch. 3 - Define a pure compound refrigerant, and give two...Ch. 3 - Define net refrigeration effect as it applies to...Ch. 3 - Define heat of compression, and explain how it is...Ch. 3 - Define flash gas, and explain how it applies to...Ch. 3 - Define temperature glide as it pertains to a...Ch. 3 - Define a zeotropic refrigerant blend, and give an...Ch. 3 - Define a near-azeotropic refrigerant blend, and...
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- What is the relationship between pressure and the boiling point of liquids?arrow_forwardfor R600a1) at 40oC what is the pressure of condensation?2) What is the absolute pressure and gauge pressure of -25’C evaporating refrigerant? 3) mollier diagram (including dryness)arrow_forwardThe LiBr-water absorption cycle shown in Fig. 17-2 operates at the following temperatures: generator, 100°C; condenser, 55°C; evaporator, 10°C, and absorber, 30°C. The flow rate of solution delivered by the pump is 0.4 kg/s. What is the concentration of Li-Br in the generator?arrow_forward
- Enthalpy of vaporisation is equal to __________at critical point. A. saturation temperature B. zero C. saturation point D. saturation pressurearrow_forwardDescribe Isentropic Processes of Ideal Gasesarrow_forwardSaturated air at 40°F (4.4°C) is first preheated and then saturated adiabatically. This saturated air is then heated to a final condition of 105°F (40.6°C) and 28% rh. To what tem- perature must the air initially be heated in the preheat coil? [Ans: 101°F (37.8°C)] please solve without psychometric chartarrow_forward
- The change of state from a gas to a solid is called _________ and the change is _______ a. Sublimation; Endothermic b. Condensation; Endothermic c. Deposition; Exothermic d. Sublimation; Exothermicarrow_forwardHow can we calculate air enthalpy change?arrow_forwardIf the air leaving the cooling coil were to be 55°F drybulband 53°F wet-bulb, what would the total heat contentof the air be?arrow_forward
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