Hyundai Samho Heavy Industries is said to have inked an order for two 9,000-teu containerships from a Singapore-based shipowner.
C-D, Isobaric Heat removal in condenser
D-A, Constant enthalpy expansion in expansion valve
Heat energy equivalent of work done = Heat energy rejected- heat energy received
= Area ABCDA + Area under AD
Coefficient of performance = heat energy received/ Heat energy equivalent of work done
The coefficient of performance for freon is about 4.7
It should be noted that undercooling increases the heat received by moving point A to the left increasing the refrigerant effect.
The critical point is the poiunt above which
p-h diagram (Mollier)
The system shown above and described below is typical of that fitted on may ships other than it is more common to have two low temperature rooms rather than one.