A Long Term Measurement and Annual Simulation on Domestic Hot Water Supply System

生活热水供应系统的长期测量和年度模拟

• 批准号: 13650660
• 负责人: IWAMOTO Shizuo
• 金额: $ 2.18万
• 依托单位: Kanagawa University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2001
• 资助国家: 日本
• 起止时间: 2001 至 2004
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-13650660/
• 关键词: domestic hot water supply; measurement in Residence; used hot water volume; hot water temperature in use; gas instant water heater; gas consumption; numerical simulation; ガス給湯機

The aim of this research is a long term measurement and annual numerical simulation on energy consumption for hot water supply.(1)Arrangement of a long-term measurement result : it analyzed from? survey result by establishing the calculating method for distinguishing the hot water tension of a bathtub, and reheat and automatic keeping warm of bathtub water. In one year from October,2002 to September,2003,about 20% of the whole hot-water supply consumption energy was used for reheat and automatic keeping warm, and it was comparable as the past research result in general. From the measurement result, hot-water temperature of each use of a bathtub, a shower faucet, a kitchen, and a washroom was analyzed. A remarkable seasonal difference is seen and it is necessary to continue analysis further. In examination of the method of predicting the consumption energy by reheat and automatic keeping warm, it turned out that it is greatly dependent on the heat source efficiency of a hot-water supply system, and it turned out that the same calculation modeling as the time of hot-water supply is required.(2)Modeling and verification of a hot-water supply machine : the system of the dwelling unit for survey was modeled using the most detailed calculation model for the gas instant hot-water supply machine. Although some tuning was required, it was able to hold down to less than about 1% of error by one hot-water supply period.(3)Annual simulation : using the calculation model of a piping system and the measurement data from October, 2002 to September, 2003, and a hot-water supply machine calculation model, the annual simulation was carried out on the same condition. Total efficiency of the hot water supply system was about 75% in gas instant supply machine.

这项研究的目的是对热水供应的能源消耗进行长期测量和年度数值模拟。（1）长期测量结果的布置：从？通过建立计算方法来区分浴缸的热水张力，并加热和自动保持浴缸水的热量，调查结果。从2002年10月到2003年9月的一年中，整个热水供应消费能源中约有20％用于再加热和自动保持温暖，并且与过去的研究结果相当。根据测量结果，分析了每次使用浴缸，淋浴水龙头，厨房和洗手间的热水温度。可以看到显着的季节性差异，有必要继续进一步分析。在检查通过加热和自动保持温暖预测消费能量的方法时，事实证明，它非常依赖于热水供应系统的热源效率，事实证明，需要与热水供应时间进行相同的计算建模。（2）使用热水供应机的建模和验证用于调查机器的系统模型的建模机器的建模机器是最详细的机器，该机器是最详细的。尽管需要进行一些调整，但它能够在一个热水供应期间下降到少于1％的错误。（3）年度模拟：使用管道系统的计算模型和2002年10月至2003年9月的测量数据，以及一个热水供应机计算模型，在相同情况下进行年度模拟。热水供应系统的总效率约为75％的天然气供应机。