TB220728R-001 Refrigeration Circuit With Variable Load Educational Equipment Refrigeration Training Equipment
Description Examines a refrigeration circuit under an adjustable load. The refrigeration circuit consists of a compressor, a condenser with ventilator, a thermostatic expansion valve and a coaxial coil heat exchanger as evaporator. A water circuit serves as load, consisting of a tank with a heater and a pump. The temperature in the tank is adjusted at a controller. The purpose of this refrigeration circuit is the production of cold water. The water flows through the jacket of the coaxial coil heat exchanger, transfers heat to the refrigerant and thereby cools down. All relevant measured values are recorded by sensors. The simultaneous transmission of the measured values to a data recording software enables easy analysis and the representation of the process in the log p-h diagram. The software provides exact data on the condition of the refrigerant, which is used to calculate the refrigerant mass flow rate accurately. The calculation therefore gives a much more accurate result than measurement using conventional methods. The software also displays the key characteristic variables of the process, such as the compressor pressure ratio and the coefficient of performance. The clearly arranged components aid understanding. Specification investigation of a refrigeration circuit with water circuit as load refrigeration circuit with compressor, condenser with ventilator, thermostatic expansion valve and coaxial coil heat exchanger as evaporator EC ventilator enables very high load variability water circuit with pump, tank with heater as cooling load at the evaporator heater with controller to adjust the tank temperature recording of all relevant measured values refrigerant mass flow rate precisely calculated via software software for data acquisition via USB under Windows 8.1, 10 refrigerant R513A, GWP: 631 Technical data Compressor refrigeration capacity: approx. 479W at 7,2/54,4°C power consumption: 168W at 7,2/54,4°C Evaporator refrigerant volume: 0,4L water volume: 0,8L Condenser transfer area: approx. 1,25m2 air flow 0…1400m3/h Pump max. flow rate: 1,9m3/h max. head: 1,4m Tank volume: approx. 4,5L heater: approx. 450W Refrigerant: R513A, GWP: 631 filling volume: 800g CO2-equivalent: 0,5t Measuring ranges pressure: 2x -1…15bar power: 0…750W temperature: 6x 0…100°C flow rate: water 0,05…1,8L/min refrigerant calculated 0…17kg/h 230V, 50Hz, 1 phase; 230V, 60Hz, 1 phase 120V, 60Hz, 1 phase;
