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Capacity Control Methods In Refrigeration

Capacity Control Methods In Refrigeration
Capacity Control Methods In Refrigeration
Product Code : CEI124
Brand Name : Chhabra Engineers
Product Description

Capacity Control Methods In Refrigeration

Refrigerant circuit with two evaporators
- Effect of the compressor speed on the system
  cooling capacity
- Various types of capacity regulation via temperature:
   + mechanical
   + electronic

Technical Description              
This unit demonstrates several possible ways of regulating the capacity. The cooling capacity of the system with 2 separate evaporators can be changed by adjusting the speed of the open compressor. The compressor drive motor is controlled using a frequency converter.
Specification

[1] Mobile system for capacity control in refrigeration engineering
[2] 2 insulated cooling chambers with electric heater and evaporator with 2 fans
[3] Chamber 1 with mechanical temperature control (intake pressure controller + thermostat), chamber 2 with electronic temperature control (case controller)
[4] 1 evaporator with additional defrosting heater
[5] Compressor with adjustable speed, drive motor controlled via frequency converter
[6] Refrigerant R134a, CFC-free
[7] l x w x h 1100x750x1905mm, 150kg
[8] 230V, 50/60Hz, 1 phase
Condensing unit
- refrigerating capacity: 560W at -5/25°C
- drive motor: 550W
Cooling chamber
- heater: 500W
- evaporator with 2 fans
  + capacity: 78W at 5°C/ΔT=7K
  + heat exchanger surface area: 1.12m²
  + max. airflow rate: 2x 50m³/h
Defrosting heater: 75W
Intake pressure controller: 0...5.5bar
Capacity controller: 0.2...6bar
Case controller: 7 inputs, 7 outputs
Measuring ranges
- temperature: -60...50°C
- power: 0...10kW
- pressure: -1...9bar / -1...24bar


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