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 37, Problem 2RQ
The two ways that fresh air enters a structure are _______and_____.
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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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- Two-phase pipe flow is the simultaneous flow of a gas (or vapor) and a liquid exhibiting ___________physical properties through the same pipe a. same b. fixed c. different d. constantarrow_forwardHumidification is a process which involves . water vapor per Kilogram of dry air Select one: a. Cooling b. Increasing c. Reducing d. Heatingarrow_forwardDifferentiate compressor, fan, and blower.arrow_forward
- Explain why the outside air damper is typically nevercompletely closed, even when the outside air conditionsare not adequate to provide free-cooling.arrow_forwardWhat is normal air flow rate?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
- What is meant by a saturated liquid and vapor?arrow_forward6-The point at which water directly converts into steam is called ___________ A.sensible heat of vaporisation B.latent heat of vaporisation C.saturation point D.critical pointarrow_forwardWhy is information regarding the specific volume of gases important to the designer of air-conditioning, heating, and refrigeration equipment?arrow_forward
- 5. Define moist airarrow_forwardIf Cp is 1.012 kJ/kgK for air, then its Cv value is ____________arrow_forwardK 1 . 1. Conditions: Outside winter time -5C and 80% RH. What is the moisture content of the outside air? Provide your answer to within 0.0004 kg wv/kg dry air of the correct answer. 2. Conditions: Outside winter time -5C and 80% RH. What is the enthalpy of the outside air? Provide your answer to within 2 kJ/kg dry air of the correct answer. 3. "Use the outside air from the first 2 questions. Now bring this outside air inside for ventilation of a house, and heat it to 23C (without adding moisture). What is the new RH (relative humidity) of this air? Provide your answer to within 3% of the correct answer." 4. What is the moisture content of dry air and water vapour at 23C and 40% RH? Provide your answer to within 0.0004 kg wv/kg dry air of the correct answer. 5. "Now using the outside air you have warmed up in question 3. How much moisture do you need to add to this air now, so that at 23C it will be at 40% RH? Provide your answer to within 0.0004 kg wv/ kg dry air of the correct…arrow_forward
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