Basic Heat Pump Demonstrator Didactic Equipment Heat Colling Training Equipment
ZM7133 Basic Heat Pump Demonstrator Didactic Equipment Heat Colling Training Equipment for college, vocational training center, university.
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ZM7133 Basic Heat Pump Demonstrator Didactic Equipment Heat Colling Training Equipment
Functional model of a water-to-water heat pump
Coiled pipe evaporator/condenser, Cu
Piston compressor, thermostatic expansion valve, press stat, sight glass, 2 manometers
2 thermometers to determine the water temperatures in the tanks, -10…50°C
Refrigerant R134a, CFC-free
Components bolted to metal sheet
Piston compressor: power consumption: 97W at -10/32°C,
refrigerating capacity: 222W at 5/32°C
Pressure switch: max. temperature difference that can be reached: 50°C Manometer with temperature scale for R134a,
temperature scale: -60…80°C
measuring ranges:
-1…9bar / -1…24bar
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Energy Efficiency in Refrigeration Systems Refrigerator Training Equipment
SR2022 Energy Efficiency in Refrigeration Systems Refrigerator Training Equipment
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Model: SR2022
Learning Objectives / Experiments
– Variables affecting energy efficiency
* controller parameters
* refrigerant supercooling
– Interconnected operation of compressors
– Operation of a multicompressor controller
– Methods for returning oil in a multicompressor refrigeration system
– Representation of the thermodynamic cycle in the log p-h diagramSpecification
[1] Refrigeration system in multicompressor operation to investigate energy efficiency
[2] Refrigeration circuit with 3 compressors connected in parallel, condenser, thermostatic expansion valve and coaxial coil heat exchanger as evaporator
[3] Heat exchanger for refrigerant supercooling can be added via valves
[4] Glycol-water circuit includes pump and tank with heater serving as cooling load at the evaporator
[5] Multicompressor controller for the parallel operation of the compressors
[6] Separation of oil from the refrigerant on the delivery side and return to the intake side of the compressors
[7] Fan at the condenser with adjustable speed
[8] LabVIEW software for data acquisition via USB under Windows XP or Windows Vista
[9] Refrigerant R134a, CFC-free
Technical Data
3 compressors
– refrigeration capacity: each 1584W at -10°C/55°C
– power consumption: each 1156W at -10°C/55°C
Condenser with fan
– capacity: 4100W
– air flow: 1250m³/h
Coaxial coil heat exchanger capacity
– 4kW at ΔT=9K; 0,6m³/h glycol-water mixture
Glycol-water mixture pump
– max. flow rate: 5m³/h
– max. head: 6m
Heater power: 3kW
Tank
– glycol-water mixture: 23L
– refrigeration circuit receiver: 5,8L
Measuring ranges
– temperature: 4x 0…100°C, 4x -100°C…100°C
– pressure: 1x -1…9bar, 1x -1…24bar
– flow rate: 1x 1..25L/min
– compressor power: 0…4995W
Dimensions and Weight
l x w x h: 1800x700x1900mm
Weight: approx. 300kg
Connections
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