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;