In order to study on the performance of suction pressure modulation for partial load in ship refrigerated container, an experimental study was carried out using the test rig for ship refrigerated container. The electric heaters were used to simulate the load of evaporator, and the inner temperature of container were kept at set point of 10℃ and 0℃ respectively. Experimental results show that taking the suction pressure modulation method as capacity control, the coefficient of performance (COP) of refrigeration unit is less than 1 when the load of evaporator is low (less than 4 kW) . Consequently, the capacity control method of suction pressure modulation should be avoided to use for the low partial load as far as possible.
Key words
ship refrigerated container /
partial load /
suction pressure modulation /
operating performance
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References
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