The resins formed in the isolated reaction vessel were used for the determination of the heat of condensation, which was measured using the Perkin-Elmer DSC-7.
The heat of the addition ([Q.sub.a1] + [Q.sub.a2]) evolved in the temperature range between 20 [degrees] C and 120 [degrees] C and the heat of condensation ([Q.sub.c]) at temperatures over 120 [degrees] C.
The resins from the reaction vessel were used for measurements of the heat of condensation by DSC.
Reserves of significant reduction of waste heat losses of boilers using combustion products deep-cooling apparatus allowing to use effectively not only sensible heat of moist gases but also the heat of condensation
of aqueous vapors contained in them are indicated.
In a normal refrigeration cycle, the gas from the compressor outlet is condensed in the condenser, by removing latent heat of condensation
. But in a transcritical [CO.sub.2] cycle the discharge pressure of the compressor is above the critical point, where heat transfer cannot take place by phase change (condensation).