報告書番号

280041

タイトル（和文）

地域分散型電源の排熱技術─改良型冷却方式の適用性─

タイトル（英文）

A HEAT REJECTION TECHNIQUE FOR MIDDLE CAPACITY THERMAL POWER PLANT NEAR POWER LOAD DEMANDING AREA -PREDICTED PERFORMANCE OF ENHANCED DRY COOLING SYSTEM-

概要 （図表や脚注は「報告書全文」に掲載しております）

最近，需要端発電効率の高い，消費地に近接した地域分散型電源が注目されている。この電源が内陸に立地される場合は排熱技術の検討が必要となってくる。しかし，わが国の事情を考慮すれば，在来の方式は多くの点で適用困難とみられる。そこで，ヘラー方式をベースにして，暖季に湿式運転を行なった場合の発電効率，白煙問題，所要補給水量について検討，評価した。

概要 （英文）

RECENTLY IN JAPAN,THE THERMAL POWER PLANT OFA MIDDLE GENERATING CAPACITY NEAR POWER LOAD AREA HAS ATTRACTED UTILITIES ATTENTION,WHICH HAS A HIGHER GENERATING EFFICIENCY AT THE POWERLOAD DEMANDING POINT.SUCH A PLANT IS CONSIDERED AS ONE POSSIBLE SOLUTION FOR ENERGY CONSERVATION AND PLANT SITING DIFFICULTIES,WHERE AS THE WASTEHEAT REJECTION SYSTEM HAS AN IMPORTANT ROLE AND AN INFLUENCE UPON ITS FEASIBILITY FROM THE STANDPOINT OF PARTICULAR SURROUNDING CONDITIONS INJAPAN WHERE THE CLIMATE IS OF HIGH TEMPERATURE FOR HEAT REJECTION,THE PEOPLE ARE NOT FAMILIAR TO THE LARGE VISIBLE PLUME FROM WET COOLING TOWERS AND FRESH WATER IS NOT MUCH ENOUGH TO MAKE UP FOR WET COOLING. THUS,INSTEAD OF CONVENTIONAL COOLING TOWER SYSTEMS,AN ADVACED DRY COOLING USING HELLER SYSTEM AND ITS WET OPERATION DELUGING THE OUTSIDE SURFACE OF THE FIN-TUBE ASSEMBLY WITH INDUSTRIAL FRESH WATER HAVE BEEN STUDIED CONSEQUENTLY EVALUATING THE HEAT EXCHANGE ENHANCEMENT,THE IMPROVED MAIN CONDENSER VACUUM(THERMAL EFFICIENCY)AND THE EXHAUST AIR CONDITION AT COOLING TOWER FAN STACK,BASED ON A HYPOTHETICAL MODEL SIMULATING THE EVAPORATIVE HEAT TRANSFER BETWEEN THE SURFACE AND AIR. THE RESULT SHOWS THAT SUCH A COOLING SYSTEM AND WET OPERATION WILL BE SUCCESSFUL AND GIVE ATOLERABLE CONDENSER VACUUM CONSIDERING THE LOSS OF LONG DISTANCE POWERTRANSMISSION FROM COASTAL POWER STATIONS.

報告者

キーワード