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 33, Problem 16RQ
Another term for pump pressure is feet of _______.
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Chapter 33 Solutions
Refrigeration and Air Conditioning Technology (MindTap Course List)
Ch. 33 - A hydronic heating system uses ______to move heat...Ch. 33 - Describe a zone in a hydronic heating system.Ch. 33 - Name four sources of heat commonly used for...Ch. 33 - Give three reasons that air is detrimental to a...Ch. 33 - Explain the difference between a wet-base and a...Ch. 33 - Where is air vented from a hydronic heating...Ch. 33 - The "point of no pressure change" is located at...Ch. 33 - The purpose of a limit control in a boiler is to...Ch. 33 - The device that relieves the pressure in a boiler...Ch. 33 - Describe the function of a low-water cutoff.
Ch. 33 - The relief valve setting for a typical...Ch. 33 - Describe how an air cushion tank functions in a...Ch. 33 - True or False: City water does not contain air.Ch. 33 - State two ways that air can get into a hydronic...Ch. 33 - The most common type of pump used for hydronic...Ch. 33 - Another term for pump pressure is feet of _______.Ch. 33 - Two types of zone control valves are the _____and...Ch. 33 - Why must expansion be considered when sizing...Ch. 33 - How is expansion in hot water pipes handled?Ch. 33 - Sketch the following systems: one pipe, two-pipe...Ch. 33 - Describe the advantage of a two-pipe...Ch. 33 - The pressure differential bypass valve is most...Ch. 33 - What is the heat output, in Btu/h, of a terminal...Ch. 33 - In a primary-secondary pumping arrangement, the...Ch. 33 - The temperature of the water at the outlet of a...Ch. 33 - A tankless water-heating system gets its heat from...Ch. 33 - How much of the sun's energy actually reaches the...Ch. 33 - The varying intensity of the sun's energy that...Ch. 33 - Drain-down systems would best be used in which...Ch. 33 - Why are solar systems intended to be used as a...
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- A double-rod cylinder is one in which the rod extends out of the cylinder at both ends. Such a cylinder, with a 3-in diameter piston and 2-in-diameter rod, cycles through a 10-in stroke at 60 cycles per minute. What gpm size pump is required?arrow_forward. If the speed of a centrifugal pump is doubled, its power consumption increases by ______ times a. No change c. Four b. Two d. Eightarrow_forwardName the three common sources of heat for heat pumps.arrow_forward
- What is high pressure pump?arrow_forward01: The process involves pumping fluid from tank A to tank B. The operation of the process can be described as follows: Before starting, PS1 must be closed. When the start button is bushed, the pump starts. - PS2 and PS3 must be closed 5s after the pump starts. If either PS2 or PS3 opens, the pump will shut off and will not be able to start again for another 14s. PS1 PS2 PS3 Tank Tank A B. Pumparrow_forwardTwo types of pumpsarrow_forward
- 1. What is the power ratio of a pump and its 1/4 scale model if the ratio of the heads is 5:1? Select one: O a. 53.5 O b. 197 O c. 35.5 O d. 179arrow_forwardWhat is the impact on flow and pressure when the impeller of a pump is trimmed? a. Flow decreases with increased pressure c. Both flow and pressure decrease b. Both flow and pressure increase d. None of the abovearrow_forwardHow to a fule pump transfers mechanical energy to a fluid by raising its pressure.arrow_forward
- Centrifugal action in centrifugal pump is actingarrow_forwardThe amount of energy actually entering the fluid from a pump is thea. theoretical horsepower b. water horsepower c. brake horse power d. hydraulic horse power one answerarrow_forwardis the striking of vapor bubbles during suction at the eye of an impeller of a centrifugal pump due to relatively --pressure. O a. Cavitation, high O b. Cavitation, low O C. Priming, Low O d. Priming, higharrow_forward
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