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 35, Problem 2RQ
State three ways the body gives off heat.
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Students have asked these similar questions
When heat energy transfers through a liquid
or gas, what is it called?
Select one:
a. Conduction
b. Convection
c. Radiation
d. Induction
Which of the following is not a true statement about heat transfer?
a. Whenever the temperature of something changes, a transfer of heat has occurred.
b. Conduction is the transfer of heat by infrared rays.
c. Light bulbs are examples of heat transfer by radiation.
d. Convection occurs when a hot object moves to an area with less heat.
1)with an aid of a drawing show how a Central cooling system that cool different machinery in the ship engine
room.
2)
Chapter 35 Solutions
Refrigeration and Air Conditioning Technology (MindTap Course List)
Ch. 35 - Name the four comfort factors.Ch. 35 - State three ways the body gives off heat.Ch. 35 - Lower room temperatures can be offset in winter by...Ch. 35 - Perspiration cools the body by________.Ch. 35 - Relative humidity is measured using a A....Ch. 35 - Name the two unknowns that are easiest to obtain...Ch. 35 - Air that contains all of the moisture that it can...Ch. 35 - In order for an air-conditioning coil to remove...Ch. 35 - For a room to be comfortable, the following...Ch. 35 - With a dry-bulb reading of 70F and a wet-bulb...
Ch. 35 - Relative humidity in question 10 is _______%.Ch. 35 - A gas furnace has an output of 60,000 Btu/h. The...Ch. 35 - A house has 3500ft2 of floor space and a 9-ft...Ch. 35 - If the fresh-air requirements for the house in...Ch. 35 - If the outside fresh-air conditions were to be 93F...Ch. 35 - If the air leaving the cooling coil were to be 55F...Ch. 35 - Using the answers from questions 14, 15, and 16,...Ch. 35 - Describe why fresh air is important in a house.
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- 4. Describe each of the three methods of heat transfer, in your own words. Make sure to explain how you can tell that that kind of heat transfer is happening.a. Conductionb. Convectionc. Radiationarrow_forwardDefine Energy.arrow_forwardA domestic refrigerator sits in a kitchen, switched on, with the refrigerator door wide open. The kitchen itself is well insulated and it can be assumed no heat can escape or enter the kitchen from the outside. Which of the following is the most accurate statement. a. The temperature in the kitchen will go down very slightly. O b. The temperature in the kitchen could go up or down, depending on the Coefficient of Performance (COP) of the refrigerator. O c. The temperature in the kitchen could go up or down depending on the mechanical efficiency of the compressor. O d. The temperature in the kitchen will stay the same. O e. The temperature in the kitchen will go up very slightly.arrow_forward
- 26. At 100°C water has a specific latent heat of vaporization of 2260 000 J/kg. What does this mean? A. Energy needed to turn 1 kg of water into ice B. 2260 000 J energy needed to turn 1 kg of ice into water C. 2260 000 J of heat is needed to boil 1 kg of steam into ice D. 2260 000 J of heat is needed to convert 1 kg of steam into waterarrow_forwardWhich of the following statements is true? (There are multiple answers I think) a. In the energy equation, work done by pressure is neglected. b. In energy equation, the kinetic and potential energy of fluid parcels are accounted for. c. Bernoulli can be expressed in the form of pressure and head. d. Bernoulli equation states that various forms of mechanical energy are converted to eachother.arrow_forwardSpecific Heat deals with the internal energy in transit that transfers due to the constant temperature. True or Falsearrow_forward
- Which of the following will have a higher rate of heat transfer. With conduction heat transfer. A. pulverized shale stone B. the stone and the pulverized shale will have the same heat transfer as they have the same conductivity constant. C. a solid block of shale stone D. the pulverized shale will have a higher heat transfer as it has a higher duction coefficientarrow_forward9. A contained room has an air-conditioning unit that is operating at 1 horsepower. If a change in internal energy of the system is found to be 1000 J, how much heat is associated with the process?arrow_forwardIdentify the number of needed tons of refrigeration effect (TR) should the exhibition center require in order for them to accommodate 4,000 attendees at an event. Take into consideration that the average human body generates a number of 400 BTUs in this question. Select the best answer. a. four TR b. eight TR c. six TR d. the correct answer is not stated in the choices. Identify the number of enthalpies that should be removed and can turn ice into a 450-gram of water that is sitting at a room temperature of 85 degrees Fahrenheit? ANS: _____ BTUarrow_forward
- 1. The diagram shows a simple engine. Fuel is burnt to produce heat which raises the temperature of the gas in the cylinder; the gas expands pushing up the piston. Flywbeel Piston Crank HEAT (a) Explain why heat must be lost before the piston can come back down? (b) What energy changes take place in this engine? (c) Draw an energy flow diagram for the engine. (d) Why can't all the energy from the fuel be converted to useful work?arrow_forward1. What are the types of boiler in terms of: a) axis of boiler, b) fire, c) pressure of boiler, d) circulation of water, e) circulation of gases.arrow_forwardChoose the correct answer only as soon as possible pleasearrow_forward
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