ACIDIFICATION PREVENTING DEVICE IN HEAT RECOVERY SYSTEM UTILIZING LATENT HEAT RECLAIMER

摘要

PURPOSE:To prevent heat efficiency from reducing at all times regardless of load fluctuation of an engine by providing a water supply passage for supplying water from a water supply tank into the reservoir part of a latent heat reclaimer through an solenoid valve, and a branch passage for blowing the water from a circulating passage into the latent heat reclaimer through the solenoid valve. CONSTITUTION:When the water level in a reservoir part 5 attains a prescribed high level H, levels H of water are detected respectively by controllers 16, 17 on the basis of detection signals from a level switch 15, and solenoid 13, 8 are respectively opened and closed so as to start blowing of the water. On the other hand, since water supplied from a water supply tank 7 is stopped, the water level in the reservoir part 5 is reduced. Such control is carried out automatically by monitoring of the level switch 15 in the case where combustion forming water is varied by variation of an engine load, and proper blowing operation is carried out in order to prevent acidification in the range of the levels L to H in the water level in the reservoir part 5.