When the refrigerator 9 is operated, {HEAD ~ the cooling water} 2 is cooled by {TAIL ~ latent heat} of vaporization of a coolant flowing inside the evaporator 10 
is cooled by
When the refrigerator 9 is operated , { HEAD ~ the cooling water } 2 is cooled by { TAIL ~ latent heat } of vaporization of a coolant flowing inside the evaporator 10
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH