Thermodynamic Study on the Suction Cooling Gas Turbine Cycle Combined with Absorption-Type Refrigerating Machine Using Wasted Heat

概要

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Gas turbine, generally, has comparatively low value of thermal efficiency and specific power, and the variations of these values are considerably large when the ambient temperature is varied. This paper is intended to present a solution to this problem by adopting a new cycle concept. To increase the temperature ratio of the cycle is one of the most effective ways to improve thermal efficiency and specific power. In this case, the low-temperature absorption-type refrigerating machine, which is operated by using the gas turbine wasted heat as a heating source to the generator, is introduced as one of the cooling devices to lower the intake air temperature to the compressor. The primary goal of our study is to investigate the general thermodynamic characteristics of this combined cycle. It has been made clear that the new cycle can achieve remarkably higher thermal efficiency and specific power thatn the gas turbine running alone. Furthermore, the cycle has a desirable merit of lessening the variation in these values, when the ambient temperature increases.
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