成果報告書詳細
管理番号20130000000159
タイトル*平成24年度中間年報 次世代型ヒートポンプシステム研究開発 都市域における下水管路網を活用した下水熱利用・熱融通技術
公開日2013/6/22
報告書年度2012 - 2012
委託先名公立大学法人大阪市立大学 株式会社総合設備コンサルタント 中央復建コンサルタンツ株式会社 関西電力株式会社
プロジェクト番号P10011
部署名省エネルギー部
和文要約
英文要約Title: Next-generation R & D Heat Pump. Technology development of system utilizing sewage heat and heat transportation potential in urban sewer pipe line (FY2010-FY2013) FY2012 Annual Report
In the planning stage of a sewage heat utilization system, a method to estimate the flow rate and temperature of the sewer line is necessary. Urban areas with various levels of housing ratio were selected and flow rate and temperature were measured in sewer lines in the areas. A method to estimate the flow rate and temperature in the sewage pipelines was created using data such as flow rate such as pumping stations, temperature measurements, meteorological data and the ratio of housing in the sewage area. In verification in Osaka City, the estimation error of temperature was 0.4 ~ 1.0K and estimated error of flow rate was 4-10%. Therefore, this estimation method can be used in the planning stage of sewage heat utilization. Furthermore, GIS tools incorporating the estimation method have been developed to analyze the relationship between the building heating load and sewage heat in the pipelines near the chosen buildings. The heat source system configuration and the thermal loads of existing systems were surveyed as a basis of comparison for a thermal transport system linking a data center and a hotel. From the operational status of the heat sources, heat loads were measured and the daily fluctuations and seasonal variations were tabulated. Two types of heat exchangers that can be embedded into sewage pipes during restoration work and two types of improved-model heat exchangers that can be installed into existing pipes were developed. The performance of these four heat exchangers was verified through testing in an actual environment of sewage. Moreover, four types of small screen devices that can remove floating debris were developed, and their performance was verified in actual environment testing. A control method has been developed for the flexible heat pump system in the 2011 fiscal year. In addition, the system can adapt for sewage temperature, flow rate, and the optimal supply temperature. Further, taking into account the level of utilization of sewage temperature, the specifications of the heat pump hot water supply and heating system was proposed. We have confirmed with test equipment in an actual sewage environment that the system COP is greater than or equal to 2.8 under the conditions of a midwinter sewage temperature 290K. To ensure long-term reliability, we are preparing to perform continuous testing in consideration of regional characteristics of the seasons. Thermal heat utilization system flexibility test was designed for virtual building subjects. Environmental performance and initial running costs have been estimated.
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