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1、“Carrier Transicold”TrainingRefrigeration PrincipleContentHeat and Heat TransferForm of Heat and UnitParameter of Refrigeration Pressure and TemperatureCircle of Refrigeration and Mostly AssemblyCircle of Refrigeration IntroduceHeat and Heat TransferWhat is it?Refrigeration is a cooling by the remov
2、al of heat. Heat is a form of energy, not a solid, or liquid or gas and not measurable by weight or volume.Energy flows “downhill”.No FlowFlowHigh Temp.Low Temp.Heat transfer is the movement of heat from one place to another.Either within a substance or between substance. Heat flows 3 ways: 1. Condu
3、ction 2. Convection3. RadiationConduction is the transfer of heat from molecule to molecule. Through a substance by chain collision.Convection is heat transfer by the movement of molecules from one place to another.Radiation transfers heat by passing from a source to an absorbent surface without hea
4、ting the space in between.Form of Heat and UnitTemperature indicates the average velo-city of the molecules of a substance. Temperature is the measure of the intensity of heat in a substance. Specific Heat = The amount of heat, measured in BTUs, required to raise one pound of a substance one degree
5、fahrenheit.Heat has two different form: Sensible heat and Latent heat. Sensible HeatLatent HeatSensible heat is the energy of molecular motion: it can be measured with a thermometer. Latent heat is the energy of molecular separation and arrangement: it cannot be measured with a thermometer.Heat (BTU
6、)Temperature ()Sensible HeatingLatent Heating100100Sensible HeatingNormal Parameter of Refrigeration :Pressure and TemperatureAtmosphereEarthWaterSimple Mercury BarometerPressureAtmospheric PressureIn. HgCompound Gauge03.9 kgf / cm2Pressure Temperature Chart of RefrigerationRefrigeration Circle and
7、Mostly PartsOpening SystemClosing SystemCondenser(Ejects Heat)Evaporator(Absorbs Heat)Hot Gas LineSuction LineCompressor(Moves Heat)Liquid LineMetering DeviceCompressor SuctionCompressor DischargePrinciple of CondensingWorking Principle of Metering Device外平衡式熱力膨脹閥工作原理BulbCapillary膜盒External Equalize
8、rVaporize Tube閥針Principle of EvaporatorCarrierT R A N S I C O L DCN328 Roof-Top UnitBasic Refrigeration SystemComp.ReceiverTXVSolenoidFilter-DrierInside Super-coolingCond.Evap.CarrierT R A N S I C O L DCN328 Roof-Top UnitRefrigerant in CondenserCarrierT R A N S I C O L DCN328 Roof-Top UnitSight glas
9、sesWith moisture displayWithout moisture displayCarrierT R A N S I C O L DCN328 Roof-Top UnitRefrigerant in EvaporatorThe Mover of HeatA refrigerant is a fluid that picks up heat by evaporating at a low temperature and pressure and rejects heat by condensing at a higher temperature and pressure.Service Valve and Manifold Gauge Set Service ValveStructure of Manifold Gauge SetManifold Hose ConnectionsCarrierT R A N S I C O L DCN328 Ro
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