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№1 слайд![Refrigeration Fundamentals](/documents_6/173726dde06fde94daba01bc4e900c72/img0.jpg)
Содержание слайда: Refrigeration Fundamentals
Part 1
Heat and Heat Transfer
№2 слайд![What is Refrigeration?](/documents_6/173726dde06fde94daba01bc4e900c72/img1.jpg)
Содержание слайда: What is Refrigeration?
№3 слайд![DEFINITION Refrigeration is](/documents_6/173726dde06fde94daba01bc4e900c72/img2.jpg)
Содержание слайда: DEFINITION
‘Refrigeration’…
…is the transfer of heat from a place where it is ‘not wanted’…
… to a place where it is ‘unobjectionable’.
№4 слайд![HEAT REMOVAL If heat is](/documents_6/173726dde06fde94daba01bc4e900c72/img3.jpg)
Содержание слайда: HEAT REMOVAL
If heat is removed from inside the container ‘faster’ than it enters...
№5 слайд![WHAT IS HEAT? A Form of](/documents_6/173726dde06fde94daba01bc4e900c72/img4.jpg)
Содержание слайда: WHAT IS HEAT?
A Form of Energy
It Exists ‘Everywhere’
It Exists at ‘All Temperatures’…Except…
Absolute Zero (-459º F / -273º C)
It can be Moved from ‘Place to Place’
№6 слайд![WHAT ARE REEFERS? Machines](/documents_6/173726dde06fde94daba01bc4e900c72/img5.jpg)
Содержание слайда: WHAT ARE REEFERS?
Machines that ‘Move Heat’
№7 слайд![HOW DOES HEAT MOVE? Warmer](/documents_6/173726dde06fde94daba01bc4e900c72/img6.jpg)
Содержание слайда: ‘HOW’ DOES HEAT MOVE?
Warmer Colder - ALWAYS!!!!!!!
№8 слайд![HOW DOES IT MOVE? Heat can](/documents_6/173726dde06fde94daba01bc4e900c72/img7.jpg)
Содержание слайда: ‘HOW’ DOES IT MOVE?
Heat can move three (3) ways….
1. Conduction
2. Convection
3. Radiation
№9 слайд![CONDUCTION Heat moves through](/documents_6/173726dde06fde94daba01bc4e900c72/img8.jpg)
Содержание слайда: CONDUCTION
Heat moves through Solids & Liquids
№10 слайд![CONDUCTION Heat will move](/documents_6/173726dde06fde94daba01bc4e900c72/img9.jpg)
Содержание слайда: CONDUCTION
Heat will move Between Solids and / or Fluids in direct contact with one another
№11 слайд![CONDUCTION](/documents_6/173726dde06fde94daba01bc4e900c72/img10.jpg)
Содержание слайда: CONDUCTION
№12 слайд![Any other Examples of](/documents_6/173726dde06fde94daba01bc4e900c72/img11.jpg)
Содержание слайда: Any other Examples of Conduction?
№13 слайд![CONVECTION Definition - Heat](/documents_6/173726dde06fde94daba01bc4e900c72/img12.jpg)
Содержание слайда: CONVECTION
Definition - Heat transfers via the circulation (movement) of a fluid. i.e…..
Air is a fluid
Refrigerant Liquid & Vapor are fluids
Types
‘Natural’ Convection
‘Forced’ Convection
№14 слайд![NATURAL CONVECTION](/documents_6/173726dde06fde94daba01bc4e900c72/img13.jpg)
Содержание слайда: ‘NATURAL’ CONVECTION
№15 слайд![NATURAL CONVECTION](/documents_6/173726dde06fde94daba01bc4e900c72/img14.jpg)
Содержание слайда: ‘NATURAL’ CONVECTION
№16 слайд![FORCED CONVECTION](/documents_6/173726dde06fde94daba01bc4e900c72/img15.jpg)
Содержание слайда: ‘FORCED’ CONVECTION
№17 слайд![FORCED CONVECTION](/documents_6/173726dde06fde94daba01bc4e900c72/img16.jpg)
Содержание слайда: ‘FORCED’ CONVECTION
№18 слайд![Any other Examples of](/documents_6/173726dde06fde94daba01bc4e900c72/img17.jpg)
Содержание слайда: Any other Examples of Convection?
№19 слайд![RADIATION Moves in Straight](/documents_6/173726dde06fde94daba01bc4e900c72/img18.jpg)
Содержание слайда: RADIATION
Moves in Straight Lines… like light
Does not heat the air it passes through
Raises temperature of the substance that absorbs it
Dark colors absorb ‘more’ heat…
Light colors absorb ‘less’ heat
№20 слайд![RADIATION](/documents_6/173726dde06fde94daba01bc4e900c72/img19.jpg)
Содержание слайда: RADIATION
№21 слайд![RADIATION](/documents_6/173726dde06fde94daba01bc4e900c72/img20.jpg)
Содержание слайда: RADIATION
№22 слайд![Any other Examples of](/documents_6/173726dde06fde94daba01bc4e900c72/img21.jpg)
Содержание слайда: Any other Examples of Radiation?
№23 слайд![HEAT TRANSFER SYSTEMS Usually](/documents_6/173726dde06fde94daba01bc4e900c72/img22.jpg)
Содержание слайда: HEAT TRANSFER SYSTEMS
Usually combine ‘Conduction’ AND ‘Convection’ to move heat. i.e….
№24 слайд![TERMS TO REMEMBER](/documents_6/173726dde06fde94daba01bc4e900c72/img23.jpg)
Содержание слайда: TERMS TO REMEMBER
Refrigeration
Heat
Box
№25 слайд![HOW IS HEAT MEASURED ? Four](/documents_6/173726dde06fde94daba01bc4e900c72/img24.jpg)
Содержание слайда: HOW IS HEAT ‘MEASURED’?
Four (4) Ways….
Temperature
Sensible Heat
British Thermal Unit (BTU)
Specific Heat
№26 слайд![TEMPERATURE Is the Level or](/documents_6/173726dde06fde94daba01bc4e900c72/img25.jpg)
Содержание слайда: TEMPERATURE
Is the Level or Intensity of heat energy
№27 слайд![TEMPERATURE The temperature](/documents_6/173726dde06fde94daba01bc4e900c72/img26.jpg)
Содержание слайда: TEMPERATURE
The temperature inside the controlled space (container) is called….
№28 слайд![SENSIBLE HEAT Is Heat you Can](/documents_6/173726dde06fde94daba01bc4e900c72/img27.jpg)
Содержание слайда: SENSIBLE HEAT
Is Heat you ‘Can Feel’
№29 слайд![BRITISH THERMAL UNIT Measure](/documents_6/173726dde06fde94daba01bc4e900c72/img28.jpg)
Содержание слайда: BRITISH THERMAL UNIT
Measure of the quantity (amount) of heat energy
№30 слайд![SPECIFIC HEAT Amount of heat](/documents_6/173726dde06fde94daba01bc4e900c72/img29.jpg)
Содержание слайда: SPECIFIC HEAT
Amount of heat required to raise the temperature of one (1) pound of a ‘Specific Substance’ one (1) degree F.
№31 слайд![SPECIFIC HEAT EXAMPLES Water](/documents_6/173726dde06fde94daba01bc4e900c72/img30.jpg)
Содержание слайда: SPECIFIC HEAT EXAMPLES
Water - 1.0
Aluminum - .22
Honey - .35
Cheese - .50
№32 слайд![TERMS TO REMEMBER Temperature](/documents_6/173726dde06fde94daba01bc4e900c72/img31.jpg)
Содержание слайда: TERMS TO REMEMBER
Temperature
Box Temperature
Ambient Temperature
№33 слайд![](/documents_6/173726dde06fde94daba01bc4e900c72/img32.jpg)