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 31, Problem 34RQ
To determine
Direct-vented furnace.
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Chapter 31 Solutions
Refrigeration and Air Conditioning Technology (MindTap Course List)
Ch. 31 - The four types of gas furnace airflow patterns are...Ch. 31 - Describe the function of a multipoise or...Ch. 31 - Describe the function of a draft safeguard switch.Ch. 31 - Where are auxiliary limit switches used in heating...Ch. 31 - The specific gravity of natural gas is A. 0.08. B....Ch. 31 - Prob. 6RQCh. 31 - The pressure at the manifold for natural gas is...Ch. 31 - Prob. 8RQCh. 31 - The typical manifold pressurefor propane gas...Ch. 31 - Why is excess air supplied to all gas-burning...
Ch. 31 - Prob. 11RQCh. 31 - True or False: All gas valves snap open and...Ch. 31 - Which of the following features does an automatic...Ch. 31 - What is the function of the servo pressure...Ch. 31 - What is a redundant gas valve?Ch. 31 - Prob. 16RQCh. 31 - Prob. 17RQCh. 31 - Prob. 18RQCh. 31 - Prob. 19RQCh. 31 - What is an integrated furnace controller (IFC)?Ch. 31 - What is meant by the warm-air blower's off-delay...Ch. 31 - What are dual-in-line-pair (DIP) switches?Ch. 31 - Prob. 23RQCh. 31 - Describe the two types of pilot lights.Ch. 31 - True or False: A thermocouple develops direct...Ch. 31 - Describe how a thermocouple flame-proving system...Ch. 31 - Prob. 27RQCh. 31 - Describe how a liquid-filled flame-proving system...Ch. 31 - Prob. 29RQCh. 31 - Describe a flame rectification flame-proving...Ch. 31 - Prob. 31RQCh. 31 - Describe the difference between a single-rod...Ch. 31 - Prob. 33RQCh. 31 - Prob. 34RQCh. 31 - Prob. 35RQCh. 31 - Prob. 36RQCh. 31 - Define the dew point temperature as it applies to...Ch. 31 - Prob. 38RQCh. 31 - Prob. 39RQCh. 31 - What are four factors that determine the...Ch. 31 - What is a 100% shutoff system?Ch. 31 - What is the difference between a hard and a soft...Ch. 31 - Prob. 43RQCh. 31 - When would a combustion blower ever interpurge a...Ch. 31 - Prob. 45RQCh. 31 - An orifice is a drilled hole in a _______.Ch. 31 - A______ distributes gas to the various burners.Ch. 31 - True or False: An orifice measures the quantity of...Ch. 31 - Prob. 49RQCh. 31 - The ________transfers heat from the hot gas to the...Ch. 31 - Name two types of fan switches.Ch. 31 - Prob. 52RQCh. 31 - Prob. 53RQCh. 31 - Describe how a two-stage furnace operates.Ch. 31 - Describe how a modulating furnace operates.Ch. 31 - What is a variable-output programmable thermostat?Ch. 31 - Why is a metal vent often preferred rather than a...Ch. 31 - Prob. 58RQCh. 31 - Describe why you should never use a flame to leak...Ch. 31 - Prob. 60RQCh. 31 - A _____________sample is taken from the flue gas...
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- The main disadvantage of La Mont boiler is the formation of bubble attachment in hot tubes. Benson boiler preventing this bubble attachment because a. Benson boilers working on pressure above critical pressure, which avoid the formation of bubbles. b. Benson boiler working on lower pressure limits which avoids formation of bubble. c. Benson boilers are having high combustion temperature which avoid the formation of bubbles. d. Benson boilers using large tubes, so that bubble formation can avoid Clear my choicearrow_forward4. Is a fire hydrant more likely to be cast or forged? Why?arrow_forwardAdvantage and disadvantage of flame hardeningarrow_forward
- Provide and illustrative example, then indicate the parts and function of the furnace.arrow_forwardواجب الفرن والعيوب. . . . Homework 3 Q1/ What the important factors for select the proper furnace? Q2/ Full in the blanks with suitable words? a. The furnace that used to melt alloy steel is- b. -----defect are ragged irregular internal or external cracks. c. To prevent cold shut defect the casting should be- d. Shrinkage cavity is- e. The types of non-destructive testing are--------. f. In X-Ray test, in dense material the film giving ------ area but in less dense material giving ---- area Q3/ Give the reason for the following? 1. Use the magnetic particle test for detect the defects in cast iron and steel? 2. Used the developer in penetrates testing? 3. Why the cold shut occur in casting? 4. Crucible furnaces used to melt non-ferrous material? 5. Ultrasonic testing is used to detect defects within the interior of the casting. II >arrow_forwardState any 15 Advantages of FBC Boiler also give one line explanation of every advantage you state.arrow_forward
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