Steam absorption type Heat pump

A direct fire-type absorption heat pump is aimed at getting heat through a condenser and an absorber or taking heat from an evaporator using high-temperature drive heat sources generated through gas.

All of the single-effect and double-effect absorption Chillers and direct fire-type heaters-coolers can be categorized as belonging to the first-class absorption heat pumps due to their operation principles. With regard to the first-class absorption heat pumps, thermal energy of low-temperature heat sources (surrounding temperature) is absorbed into an evaporator by the highest-temperature heat(steam, hot water, gas etc.) and thermal energy is discharged to relatively high-temperature(cooling water temperature) heat sources through a condenser and an absorber.

In this case, the temperature of hot water is low, because the acquired energy of the hot water is larger than the energy of supplied drive heat sources but the temperature range of the hot water is small. These heat pumps can be used for recovering the heat of waste hot water discharged during processes taking place in buildings or factories and supply hot water where needed. Direct fire-type absorption heat pumps which operate using fuel, such as city gas or oil, have regenerators attached to their burners. Those pumps which belong to a direct heating type can be used like ordinary boilers even without heat recovery sources.