Dry exhaust gas circulation drying system with heat pump unit

摘要

[Problem] To develop a drying system of a dry exhaust gas circulation type equipped with a novel heat pump unit, wherein cyclic use of dry exhaust gas is enabled, and energetic efficiency in the whole drying system is improved and furthermore cost reduction is realized. [Solution] The drying system is characterized in that an evaporator in the heat pump unit is cyclically supplied with acting water as a heat source medium, and a scrubber device for cleaning the dry exhaust gas exhausted from a dryer is provided such that the cleaned dry exhaust gas (gas which has been cleaned) is partially or entirely sent again to the heat pump unit, warmed there and thereafter supplied to the dryer as drying gas.