Fig. 4 shows the variation of the measured mass flow rate
of refrigerant with heat sink temperature in the TPERC and
in the CRC for the different heat source temperatures of 8,
12 and 16 8C. In fact, the refrigerant mass flow rate in the
CRC is constant throughout the system whereas the TPERC
has a different mass flow rate for high-pressure and lowpressure
sides. In this paper, the high-pressure side mass
flow rate refers to the flow rate through the motive nozzle
ðm_ pÞ for the TPERC, and through the expansion device for
the CRC, while the low-pressure side mass flow rate to that
flowing through the evaporator ðm_ sÞ for both modes of
operation. Considering the mass flow rate through the
expansion device, it is found that at lower heat sink
temperature, the CRC has a higher mass flow rate than the
TPERC. It can also be seen that the mass flow rate of the
TPERC increases with increasing heat sink temperature and