SR2042 Capacity Control in Refrigeration Systems
Learning Objectives / Experiments
- key devices for changing the refrigeration capacity
* thermostat
* evaporation pressure controller
* refrigeration controller
* capacity controller
* compressor with variable speed
- operation of a refrigeration controller with specification of
temperatures for
* controlling the refrigeration capacity
* switching the defrost heater on and off
* switching the fans on and off
Specification
[1] methods for capacity control in refrigeration systems
[2] refrigeration circuit with compressor, condenser and 2
evaporators in insulated refrigeration chambers
[3] each refrigeration chamber with adjustable heater to generate a
cooling load, thermostatic expansion valve and fan
[4] 1 refrigeration chamber with refrigeration controller for
temperature control; solenoid valve, fan and defrost heater as
actuators
[5] 1 refrigeration chamber with thermostat, solenoid valve and
evaporation pressure controller for temperature control
[6] compressor with variable speed via frequency converter
[7] capacity controller in the compressor bypass
[8] Refrigerant R134a, CFC-free
Technical Data
Compressor
- refrigeration capacity: approx. 560W at -5/25°C
and 1.450min-1
- drive motor: 550W
2 heaters: approx. 500W
4 fans: max. air flow: approx. 50m³/h
1 defrost heater: approx. 75W
Refrigeration controller
- 7 inputs
- 7 outputs
Evaporation pressure controller: 0...5,5bar
Thermostat: -5...20°C
Capacity controller: 0,2...6bar
Measuring ranges
- motor speed: 1.100...2.700min-1
- temperature: 3x -60...50°C
- heater power: 2x 0...1.000W
- pressure: 3x -1...9bar; 1x -1...24bar
Dimensions and Weight
LxWxH: 1.100x750x1.900mm
Weight: approx. 150kg
Required for Operation
230V, 50/60Hz, 1 phase
Product Details and Warranty
We supply suitable spare pats according to experiment requirement,
our products take aluminum structure, A4 paper dimension aluminum
and plastic hanging box structure.
We supply 3 years warranty time.
Packaging & Delivery
Package details: plastic film+ plastic foam + plywood box with
pallet, and for equipment dimension less than 1CBM, we supply
plastic film+ plastic foam+ fine carton.
Arrange delivery within 45 days upon receipt of payment.
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Certificate
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