P15-11 ガスエンジン排熱ハイブリッド冷凍サイクルの開発

概要

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This paper describes a development of a hybrid ammonia/water refrigeration cycle to make cold energy of-20C by gas engine exhaust heat. The refrigerator incorporates a turbocharger to transport ammonia vapor from the evaporator to the absorber of an absorption cycle, which makes the refrigeration possible by jacket water exhaust heat of relatively low temperature. The newly invented hybrid system proposed here can use both exhaust gas and jacket water effectively. The turbine, of which rotation is 130,000 rpm, is driven by ammonia/water steam vaporized by gas engine exhaust heat. As it uses ammonia gas bearing free from lubricating oil, the system can be made hermetic. In some operating conditions, the refrigeration capacity is more than twice as large as ordinary system driven by only the high temperature portion of the exhaust gas. The development was started as a three year project, financially assisted by NEDO.
社団法人日本機械学会の論文
2002-06-14