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 41, Problem 6RQ
The typical temperature difference between the entering air and the boiling refrigerant on a standard air-conditioning evaporator is ______°F.
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The typical temperature difference between the enteringair and the boiling refrigerant on a standard airconditioningevaporator is ______°F.
Choose correct answer:
In a condenser, the vacuum is found to be 2 N/cm2. The barometer reads 735 mm of Hg, then its approximate absolute pressure is ____________
A.
786.47 kPa
B.
None of the answers given
C.
0.078647 N/mm2
D.
786470 N/m2
I.
ESSAY/ ENUMERATION
1. GIVE ATLEAST 5 ADVANTAGES AND 5 DISADVANTAGES OF INORGANIC REFRIGERANTS.
2. HOW DOES A REFRIGERANT WORKS IN A REFRIGERATION SYSTEM?
3. DIFFERENTIATE POSITIVE AZEOTTROPES AND NEGATIVE AZEOTROPES IN TERMS OF
THEIR APPLICATION IN REFRIGERATION SYSTEMS.
4. THE FOUR MAIN COMPONENTS OF A REFRIGERATION SYSTEM ARE COMPRESSOR,
CONDENSER, EVAPORATOR AND AN EXPANSION VALVE. EXPLAIN BRIFLY THE FUNCTION
OF EACH COMPONENT AND THE FLOW OF THE CYCLE.
Chapter 41 Solutions
Refrigeration and Air Conditioning Technology (MindTap Course List)
Ch. 41 - Before installing a gauge on the high-pressure...Ch. 41 - Capacitors should be shorted with a(n)...Ch. 41 - The high- and low-side pressures on an operating...Ch. 41 - Why do most air-conditioning systems not need a...Ch. 41 - A typical standard-efficiency evaporator under...Ch. 41 - The typical temperature difference between the...Ch. 41 - When the ambient outside air temperature isand the...Ch. 41 - When the outside ambient air temperature is 90F,...Ch. 41 - If a condensing pressure is 260 psig for R-22,...Ch. 41 - How is high efficiency accomplished in an...
Ch. 41 - True or False: When troubleshooting a small...Ch. 41 - The suction gas may have a high superheat if the...Ch. 41 - If the suction pressure is low and the suction...Ch. 41 - What electrical test instrument is used to measure...Ch. 41 - What electrical test instrument is used to measure...Ch. 41 - Most condensers will subcool the refrigerant to...Ch. 41 - What are two types of fixed-bore metering devices?Ch. 41 - It no crankcase heat is at the compressor, what...Ch. 41 - What is the purpose of the internal overload...Ch. 41 - If a condenser circuit breaker is tripped, you...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.Similar questions
- Why is a circulating brine system more attractive for ship refrigeration than individual evaporators?arrow_forwardThe approach temperature for the evaporator isA. the difference between the suction and head pressuresconverted to temperature.B. the difference between the refrigerant boiling temperatureand the suction-line temperature.C. the difference between the refrigerant boiling temperatureand the inlet water temperature.D. the difference between the refrigerant boiling temperatureand the leaving-water temperature.arrow_forwardIdentify the amount of enthalpy needed in order to turn steam into 450g h20 (water) that is located at a temperature of 85 degrees Fahrenheit ANS: _____ British Thermal Unitarrow_forward
- A. What is the effects of different input parameters on evaporator operating pressure. B. How does the change in evaporator pressure affect the process?arrow_forwardQuality means _______ when referring to a refrigerant.arrow_forwardWhen a chiller is used, the secondary refrigerant that circulates in the building is _____.arrow_forward
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