REFRIGERATION Flashcards

1
Q

An integral part of the larger and more complex building procurement process through wich an owner defines facility needs, architectural possibilities, etc.

A

Design Process

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2
Q

Simply a statement that outlines the expected high-level outcome of the design process

A

Design Intent

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3
Q

Benchmarks against which success or failure in meeting design intent is measured

A

Design Criteria

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4
Q

As design criteria define success or failure in a specific area of the building design process, they should be realistic and not subject to ______ or sudden change without obvious reason

A

whimsical change

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5
Q

Meaning of ASHRAE

A

American Society of Heating, Refrigerating, and Airconditioning Engineers

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6
Q

In design criteria, the power density of the lighting system will be no greater than _____

A

0.7W/ft^2

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7
Q

Process of cooling to provide human comfort

A

Air conditioning

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8
Q

Used for food reservation, removing heat from substances in chemical, petroleum, and petrochemical plants

A

Refrigeration (industrial Refrigeration)

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9
Q

Application of Refrigeration System

A
  1. Food storage and distribution
  2. Food Processing
  3. Chemical and Process Industries
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10
Q

Methods of Refrigeration

A
  1. Ice Refrigeration
  2. Mechanical Refrigeration
  3. Absorption Refrigeration
  4. Steam Jet or Vacuum Refrigeration
  5. Air Cycle Refrigeration
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11
Q

A refrigeration method of lowering and maintaining the temperature of a material or space by the use of literal ice

A

Ice Refrigeration

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12
Q

A method using mechanical components composing system known as vapor compression refrigeration system

A

Mechanical Refrigeration

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13
Q

A method through the use of system or cycle known as Absorption Refrigeration System or cycle

A

Absorption Refrigeration

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14
Q

A method of Refrigeration system using water as refrigerant

A

Steam Jet or Vacuum Refrigeration

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15
Q

Using air as Refrigeration

A

Air Cycle Refrigeration

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16
Q

A branch of science that deals with the process of reducing and maintaining the temperature of space or material below the temperature of the surroundings

A

Refrigeration

17
Q

4 Basic Components of Refrigeration

A
  1. Evaporator
  2. Condenser
  3. Expansion Valve or Capillaries
  4. Compressor
18
Q

These are low pressure vapor heat exchanger

A

Evaporator

19
Q

These are high-pressure vapor heat exhanger

A

Condenser

20
Q

Standard Condensing temperature

A

55 degrees celcius

21
Q

Temperature maintained in the freezer is ____ whereas the mean temperature inside the cabinet is ____

A

15 degrees celcius, 7 degrees celcius

22
Q

The throttling devices that transport refrigerant from high-pressure condition to low-pressure condition

A

Expansion Valve or Capillaries

23
Q

These are pressure raising devices

A

Compressor

24
Q

Unit of Refrigeration Capacity

A

Tons of Refrigeration (TR)

25
Q

Is the rate of cooling required to freeze one ton of water at 32 deg. Farenheit

A

Tons of Refrigeration (TR)

26
Q

Evaporation temp. in Standard Refrigeration Cycle

A

5 deg. Farenheit or -15 deg. Celsius

27
Q

Condensing temp. in Standard Refrigeration Cycle

A

86 deg. Farenheit or 30 deg. Celsius

28
Q

A cycle that receives heat from a colder and delivers heat to a hotter body, not in violation of the second law, but by virtue of a work inpur

A

Reverse Cycle

29
Q

Cycles used to pump heat from low to high temp. regions; or cycles with the objective of extracting heat from low temp reservoir

A

Refrigeration Cycle

30
Q

Devices that operate in a cycle and transfer heat from a low-temp region to a high-temp region with work input to the system

A

Heat Pump and Refrigeration

31
Q

A cycle with the objective of supplying heat to the high temp reservoir

A

Heat pump

32
Q

A body with a large heat capacity such that when heat is removed or added to the reservoir, the temp of the reservoir does not change

A

Thermal Reservoir

33
Q

With a purpose to move refrigerant through the system as efficient as possible

A

Compression