Micro-cogeneration Waste-heat-input type Natural Chiller

Overview

While the use of exhaust heat by absorption chiller-heater with exhaust heat recovery has been available with 100 kW- to 300 kW-class CGS, it has become possible to use multiple 25 kW units of “Genelight” for that purpose! The use of exhaust heat from previous models of micro-cogeneration systems has been mostly limited to water heating due to the low temperature (65°C–75°C) of hot water for heat recovery. Therefore, it has been desired to expand the use of the exhaust heat. To address this challenge, we increased the power generation efficiency of the 25 kW model of “Genelight” to 33.5% and raised the temperature of the hot water for heat recovery to 85°C. Thus, we have had the first success in using the exhaust heat from a micro-cogeneration system for cooling applications.

* What is an absorption chiller-heater with exhaust heat recovery?
The absorption chiller-heater with exhaust heat recovery reduces the amount of fuel gas consumed by the high-temperature regenerator. To do so, it places an exhaust-heat-recovery heat exchanger between the absorber and regenerator on the absorbent line of a conventional gas-powered absorption heater-chiller and heats the absorbent with the exhaust heat (hot water) from the gas engine.

Features