REFRIGERATION Flashcards
An integral part of the larger and more complex building procurement process through wich an owner defines facility needs, architectural possibilities, etc.
Design Process
Simply a statement that outlines the expected high-level outcome of the design process
Design Intent
Benchmarks against which success or failure in meeting design intent is measured
Design Criteria
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
whimsical change
Meaning of ASHRAE
American Society of Heating, Refrigerating, and Airconditioning Engineers
In design criteria, the power density of the lighting system will be no greater than _____
0.7W/ft^2
Process of cooling to provide human comfort
Air conditioning
Used for food reservation, removing heat from substances in chemical, petroleum, and petrochemical plants
Refrigeration (industrial Refrigeration)
Application of Refrigeration System
- Food storage and distribution
- Food Processing
- Chemical and Process Industries
Methods of Refrigeration
- Ice Refrigeration
- Mechanical Refrigeration
- Absorption Refrigeration
- Steam Jet or Vacuum Refrigeration
- Air Cycle Refrigeration
A refrigeration method of lowering and maintaining the temperature of a material or space by the use of literal ice
Ice Refrigeration
A method using mechanical components composing system known as vapor compression refrigeration system
Mechanical Refrigeration
A method through the use of system or cycle known as Absorption Refrigeration System or cycle
Absorption Refrigeration
A method of Refrigeration system using water as refrigerant
Steam Jet or Vacuum Refrigeration
Using air as Refrigeration
Air Cycle Refrigeration
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
Refrigeration
4 Basic Components of Refrigeration
- Evaporator
- Condenser
- Expansion Valve or Capillaries
- Compressor
These are low pressure vapor heat exchanger
Evaporator
These are high-pressure vapor heat exhanger
Condenser
Standard Condensing temperature
55 degrees celcius
Temperature maintained in the freezer is ____ whereas the mean temperature inside the cabinet is ____
15 degrees celcius, 7 degrees celcius
The throttling devices that transport refrigerant from high-pressure condition to low-pressure condition
Expansion Valve or Capillaries
These are pressure raising devices
Compressor
Unit of Refrigeration Capacity
Tons of Refrigeration (TR)
