a r t i c l e i n f o
Article history:
Received 10 February 2010
Received in revised form
25 March 2013
Accepted 22 June 2013
Available online 12 December 2013
Keywords:
Solar refrigeration
Ejector
Solar energy
Energy saving
a b s t r a c t
A solar-assisted ejector cooling/heating system (SACH-2k) is built and test result is
reported. The solar-driven ejector cooling system (ECS) is connected in series with an
inverter-type air conditioner (IAC). Several advanced technologies are developed in SACHk2,
including generator liquid level control in ECS, the ECS evaporator temperature control,
and optimal control of fan power in cooling tower of ECS.
From the field test results, the generator liquid level control performs quite well and
keeps stable performance of ejector. The ECS evaporator temperature control also
performs satisfactorily to keep ejector performance normally under low or fluctuating solar
radiation. The fan power control system cooling tower performs stably and reduces the
power consumption dramatically without affecting the ECS performance. The test results
show that the overall system COPo including power consumptions of peripheral increases
from 2.94e3.3 (IAC alone) to 4.06e4.5 (SACH-k2), about 33e43%. The highest COPo is 4.5.
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