Heat Pump For Cooling And Heating Operation

Heat Pump For Cooling And Heating Operation

Model: SR2010

Learning Objectives / Experiments

– design, operation and key components of a heat pump or refrigeration system

– representation of the thermodynamic cycle in the log p-h diagram

– comparing different operating modes

– measurement of compressor capacity and heating or cooling capacity in the glycol-water circuit

– determination of

* efficiency

* coefficient of performance of heat pump and

refrigeration system

* specific compressor load

* compressor pressure ratio

* specific cooling capacity

* specific refrigeration capacity

– comparing key figures of heat pump and

refrigeration system

Specification

[1] air-to-water heat pump for cooling or heating operation

[2] different operating modes selectable via solenoid valves

[3] refrigeration circuit with compressor, condenser (heat exchanger with fan), 2 evaporators with fan (refrigeration and freezing stage)

[4] glycol-water circuit with tank, pump and coaxial coil heat exchanger

[5] coaxial coil heat exchanger and heat exchanger with fan can both be used as condenser or evaporator in the refrigeration circuit

[6] 1 thermostatic expansion valve each for all heat exchangers and evaporators

[7] 1 additional evaporation pressure controller and 1 capillary tube for the refrigeration stage evaporator

[8] displays for temperature, pressure, flow rate and power consumption of the compressor

[9] software for data acquisition with USB under Windows Vista or Windows 7

[10] refrigerant R134a, CFC-free

Technical Data

Compressor

– refrigeration capacity: 934W at -6,7/55°C

– power consumption: 620W at -6,7/55°C

Heat exchanger with fan

– transfer area: 1,25m², volumetric air flow

rate: 650m³/h, capacity: 1148W at DT=15K

Evaporators with fan

– refrigeration stage

* transfer area: 1,21m², volumetric air flow

rate: 80m³/h, capacity: 140W (tL1=5°C, DT1=10K)

– freezing stage

* transfer area: 3,62m², volumetric air flow

rate: 125m³/h, capacity: 330W (tL1=5°C, DT1=10K)

Coaxial coil heat exchanger

– capacity: 1,6kW at 0°C; DT=9K

Measuring ranges

– temperature: 11x -50…150°C

– pressure: 2x -1…15bar, 1x -1…24bar

– flow rate (refrigerant): 1x 4…40L/h

– flow rate (glycol-water): 1x 2,5…65g/s

– power: 0…1150W

Dimensions and Weight

LxWxH: 2210x800x1900mm

Weight: approx. 330kg

Required for Operation

230V, 50/60Hz, 1 phase or 120V, 60Hz/CSA, 1 phase

Water connection