307 最適化手法に基づくマイクロタービンの排熱利用に関する比較検討 : デシカント空調機を中心として

概要

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Means of utilizing exhaust heat generated from a microturbine generator by a desiccant air-conditioning unit is compared with means by a wasts heat recovery boiler and a refrigerator recovering exhaust heat directly from flue gas from a economic viewpoint. An optimization approach is adopted to rationally compare between the aforementioned means. On/off status of operation of equipment and energy flow rates are determined so as to minimize the hourly energy change subject to satisfaction of energy demand reqirments. In the optimization problem, performance characteristics of such equipment as the desiccant air-conditioning unit are modeled in consideration of enthalpy, absolute humidity and temperature of ambient air. Through numerical studies carried out on systems installed in an office building and a hospital, the effects of the systems combining the microturbine generator with the desiccant air-conditioning unit on economy is clarified.