Absorption chiller/absorption chiller-heater having safety device

Abstract

In an absorption chiller/absorption chiller-heater wherein a pressure rise preventing means such as a safety valve, rapture disk or breakable plate is disposed in a high temperature regenerator or in the refrigerant vapor piping from the high temperature regenerator, with the discharge opening of the pressure rise preventing means being open to the atmosphere, in order to prevent the pressure rise in the high temperature regenerator, the discharge opening of safety valve is connected to low pressure units such as the low temperature regenerator through pressure relief piping so that, when the safety valve is activated, the refrigerant vapor and absorption solution of the high pressure side will be discharged to low pressure units such as the low temperature regenerator designed so as to generally maintain a vacuum therein during operation. By virtue of this construction, even when the pressure in the high temperature regenerator increases during operation causing the safety valve, rapture disk or the like to operate, it is possible to maintain the pressure reduction, assuring safety and avoiding the bad influence of corrosion due to open-to-atmosphere trouble, and also to quickly and readily perform the restoration.