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 37, Problem 8RQ
To determine
Three pressures created by moving air in duct work.
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Chapter 37 Solutions
Refrigeration and Air Conditioning Technology (MindTap Course List)
Ch. 37 - Name five changes that are made to air to...Ch. 37 - The two ways that fresh air enters a structure are...Ch. 37 - Which of the following types of fan is used to...Ch. 37 - True or False: Turbulence in airflow causes...Ch. 37 - Name two types of blower drives.Ch. 37 - Pressure in ductwork is expressed in which of the...Ch. 37 - What is a common instrument used to measure...Ch. 37 - Prob. 8RQCh. 37 - Name the two types of return-air systems in...Ch. 37 - What is the component that distributes air in the...
Ch. 37 - Warm air heats a room better if distributed A. low...Ch. 37 - Name four materials used to manufacture duct.Ch. 37 - The name of the fitting where the branch line...Ch. 37 - Prob. 14RQCh. 37 - Prob. 15RQCh. 37 - Prob. 16RQCh. 37 - Multiple-zone systems often use a(n) __________or...Ch. 37 - Prob. 18RQCh. 37 - Prob. 19RQCh. 37 - Prob. 20RQCh. 37 - If a rectangular duct system s (12in.26in.) has an...Ch. 37 - The equivalent feet of pressure drop for a group...
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- A glass container is filled with water and placed on a horizontal table. The left opening is open to the atmosphere. The right opening is closed by a stopper. There is no air between the water and the stopper. Water is then removed from the container as shown below. D. D• F. B. F. Table Table Before After Which of the following correctly describes the pressure at point E? L. The original pressure at point E is equal to atmospheric pressure. II. The original pressure at point E is greater than atmospheric pressure. III. The original pressure at point E is less than atmospheric pressure but greater than zero. IV. The original pressure at point E is zero. V. The final pressure at point E is equal to atmospheric pressure. VI. The final pressure at point E is greater than atmospheric pressure. VII. The final pressure at point E is less than atmospheric pressure but greater than zero. VIII. The final pressure at point E is zero.arrow_forwardsolve a,b, c and d please. In a detergent-making process, 1400gal/h of water flows through a 2-inch pipe system as follows: Exit from pump, 2ft vertical, open gate valve, 14 ft vertical, 908 bend, 12ft horizontal, 1/4 open globe valve, 20ft horizontal, 908 bend, 6ft horizontal, 908 bend, 12ft vertical, 908 bend, 14ft horizontal, 908 bend, 4 ft vertical, 908 bend, 28ft horizontal, open gate valve, 3ft horizontal, entry to tank containing 30ft of liquid. (a). If the pump and tank are both at grade level, estimate the head that the pump must deliver. (b). If the pump inlet pressure is 25 psig, what is the outlet pressure? (c). Estimate the pump shaft work ( d). If the pump is powered by an electric motor with 85% efficiency, what is the annual electricity consumption?arrow_forwardThe mass flow rate is , the volume flow rate is , density is , and the specific volume is . What is (are) the correct expression (s) below?_________ A. B. C. D.arrow_forward
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