加壓後的水！高手請入入入入入入入入入入入入入入入入入

The specific heat capacity of water varies with temperature more than with pressure. Under normal daily variation of pressure, you may assume the specific heat capacity be about constant (provided that temperature is also constant).

It is only under very high pressure, ~ 400 MPa (i.e. 4000 atmospheric pressure), that would cause the specific heat capcity of water to decrease. This may be explained as due to the break-up of the hydrogen bonding as the pressure increases, followed by its partial build-up, due to interpenetrating hydrogen bonded networks, at the higher pressures.

Under the pressure in a refrigerator compressor, the value of specific heat capcity of water should not change much.

[I wonder if your teacher has studied physics at university, he shouldn't, in any way, told his students like that!!!].