SR2018 Heat Pump for Cooling and Heating Operation Didactic Equipment Educational Laboratory Bench Air Conditioner Trainer 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
