HVAC-R Unit 1 Review Questions and Answers 100% Correct
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HVAC-R Unit 1 Review Questions and Answers 100% CorrectHVAC-R Unit 1 Review Questions and Answers 100% CorrectHVAC-R Unit 1 Review Questions and Answers 100% CorrectHVAC-R Unit 1 Review Questions and Answers 100% Correct
List some of the different ways that homes and buildings may be heated. - ANS...
list some of the different ways that homes and bui
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HVAC-R Unit 1 Review Questions
and Answers 100% Correct
List some of the different ways that homes and buildings may be heated. - ANSWER
- Wood, gas, oil, electric, solar, heat pumps, and geothermal.
What were some of the primary heating fuels that early civilizations used? -
ANSWER - Wood, peat, and coal remained the primary heating fuels for centuries
When is it believed that ice was first artificially made for food storage? - ANSWER -
First evidence of man making ice appeared more than 3,000 years ago, about 1000
b.c.
How did early man make ice? - ANSWER - The ice was produced in shallow clay
plates, about the size of a saucer. The water in these clay plates wept through the
clay. This water dampened the small straw mats holding the clay plates in racks a
few feet above the ground. The straw aided with evaporative cooling of the water.
Under the right conditions a thin film of ice would form overnight on each clay plate.
Why did some manufacturers spray water in factories in the early 1700s? - ANSWER
- Some manufacturers sprayed water in factories for cooling.
How did early Romans cool palaces? - ANSWER - The Romans packed ice and snow
between double walls in the emperor's palaces.
What do the terms environmental heating and air conditioning refer to? - ANSWER -
Primarily to the control of a space's air temperature
What does the term process heating and cooling refer to? - ANSWER - They are used
to aid in manufacturing or to keep equipment at the desired temperature.
When did central warm-air systems for residential and commercial applications
become well defined? - ANSWER - In 1908 the essential elements for heating,
cooling, humidifying, dehumidifying and filtering air were defined
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