Bundle: Refrigeration and Air Conditioning Technology, 8th + MindTap HVAC, 2 terms (12 months) Printed Access Card
8th Edition
ISBN: 9781337190336
Author: TOMCZYK
Publisher: CENGAGE L
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Textbook Question
Chapter 50, Problem 22RQ
Variable refrigerant flow systems sense the ______and _____of the refrigerant to determine the optimal volume of refrigerant to circulate.
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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.
Scope: Standard Refrigeration System
What are different types of refrigerant used in refrigeration system for cooling?
Chapter 50 Solutions
Bundle: Refrigeration and Air Conditioning Technology, 8th + MindTap HVAC, 2 terms (12 months) Printed Access Card
Ch. 50 - Which of the following is true regarding the...Ch. 50 - Which process would best represent the opposite of...Ch. 50 - Mixed air is best described as the combination of...Ch. 50 - Which of the following should be taken into...Ch. 50 - A bonded roof is one that has A. reinforced steel...Ch. 50 - Properly installed roof curbs will reduce the...Ch. 50 - When rigging a unit to the roof, what minimum...Ch. 50 - What is the acceptable method for communicating...Ch. 50 - Prob. 9RQCh. 50 - Prob. 10RQ
Ch. 50 - The most efficient way to establish the best...Ch. 50 - Free-cooling can be accomplished if the
A....Ch. 50 - Prob. 13RQCh. 50 - Prob. 14RQCh. 50 - Explain why the outside air damper is typically...Ch. 50 - Briefly explain the purpose of ASHRAE Standard 62.Ch. 50 - Explain the concept of demand control ventilation.Ch. 50 - Explain how carbon dioxide levels can be used to...Ch. 50 - Describe the blowers used on VAV systems.Ch. 50 - A cooling-only VAV box has all of the following...Ch. 50 - Which of the following is true regarding a reheat...Ch. 50 - Variable refrigerant flow systems sense the...Ch. 50 - The acronym PID stands for ______, _____, and...Ch. 50 - Explain the main benefit of a heat-recovery VRF...Ch. 50 - The pump on a dry cooler can direct water to...Ch. 50 - During low ambient conditions, the space cooling...
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- In a refrigerațion cycle, the flow of refrigerant is controlled by; * O evaporator O compressor O condenser O expansion device (valve)arrow_forwardChoose from the options listed inside the parenthesis: Objective of Refrigeration: maintain a (hot/cold) temperature in a (hot/warm/cold) space by (removing/supplying) (QL/QH) (from/to) it.arrow_forward1. A temperature drop in the coolant entering the primary loop can be dangerous because,(a) Reactivity can increase as a result.(b) Pressure in the primary loop will decrease and water can flash to steam.(c) All of the above.(d) None of the abovearrow_forward
- 9) What is the refrigeration effect?A: It is the energy transfer per kg of refrigerantB: It is the energy transfer per oC of refrigerantC: It is the energy reject per kg of refrigerantD: It is the energy reject per oC of refrigerantarrow_forward1. What other substance circulates in the refrigeration system with the refrigerant? 2. What would happen if there were more refrigerant in the system than the condenser and receiver could hold?arrow_forwardDraw the schematic and p-h diagram for the problem below: A two-stage cascade refrigeration system uses ammonia as the working substance. The evaporator is at -35 degree Celsius and high pressure condenser is at 1514.2 kPa. The cascade condenser is a direct-contact type. The refrigeration load is 90 tons. Determine the a.) the COP, and b.) the quantity of the fluid entering.arrow_forward
- Number 3 The food storage room requires a cooling system with a capacity of 15 tons of refrigeration that operates at an evaporator temperature of -17.5 ° C and a condenser temperature of 37.0 ° C. The refrigerant used is R-134a and the system operates in saturated conditions. a. COP= b.Refrigerant flow rate = Answer in kg / s. c. Heat loss rate in condenser = Answer kJ / s.arrow_forwardC, The air pressure and temperature increase while the volume decrease O d. The air pressure and temperature decrease while the volume increase Which of the following does not help in collecting results in the mechanical heat pump? Select one: O a. Pressure gage b. Flowmeter C. Wattmeter O d. Receiverarrow_forwardUsually evaporator pressure in refrigeration system is ____________ A. 120 kN/mm2 B. 0.12 N/mm2 C. 0.12 N/cm2 D. 120 N/mm2arrow_forward
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