In order to ensure that the system satisfies the design requirement of maintaining a fixed temperature, test
were conducted with initial temperature of load at required temperature. Water at 10 ˚C is filled in the cabin before
the system is switched ON. Readings were taken every 15min until steady temperature was obtained. The results show that, the heat in leak rate was greater than heat removal rate at lower temperatures. But at temperature
of about 13 ˚C the heat in leak and heat removal was balanced, as a result the plot is parallel to time axis. Heat in-leak
through the insulation exceeded the anticipated design value. Lower temperatures can be maintained by making apt
changes to the insulation.