(1) Record pressures, temperatures and compressor power for both modes: normal capillary and
normal expansion. See the enclosed data sheet.
(2) Identify the various components of the cycle and trace a P-h diagram. Indicate on the P-h
diagram the pressures and temperatures you measured for the calculation of COP.
(3) Calculate the COP of the cycle for each mode and compare them.
(4) Briefly discuss the limitations of the system compared to real refrigeration systems in buildings.
Note: The lab instructor will explain about the apparatus and the way to operate and control it to
measure the variables.