The study on the low-loaded cooling of well insulated houses in the warm-temperature regions

暖温区保温良好房屋低负荷制冷研究

• 批准号: 15560514
• 负责人: SUZUKI Kenzo
• 金额: $ 2.05万
• 依托单位: Hokkaido Institute of Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2003
• 资助国家: 日本
• 起止时间: 2003 至 2004
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-15560514/
• 关键词: air conditioner; cooling; well insulated house; energy conservation; cooling room temperature; Coefficient of performance; inverter control; unsteady analysis program; キーワード; シミュレーション; 通気層; 高断熱; 排熱

I have surveyed air conditioner operating conditions and indoor environment of houses in relation to their thermal insulation performance in Kansai (Kyoto, Kobe city), Tohoku (Aizu-wakamatsu city) and Hokkaido (Kitami city). In Aizu-wakamatsu and Kitami, air conditioners were used since morning when ambient temperature exceeded 25℃, and the average room temperature was 26〜27゜C. In Kyoto and Kobe, however, the utilization of air conditioners in the daytime was little, and they were used only during the period between the evening and pre-sleep time, and the average room temperature was 28〜30℃. The difference in such utilization by the thermal insulation performance was small because people in Kansai lived in their houses with their windows opened. They had the impression that high-insulated houses kept in the heat due to their insufficient ventilation performance even if a maximum room temperature was low.. In Kyoto and Kobe, habituation for a heat and apprehensions on the health concern … More ing air conditioner use, discomfort of top and bottom temperature gradient have reduced the utilization of air conditioners.In Aizu-wakamatsu, air conditioners frequently repeated the on/off operation when each air conditioner in all rooms was utilized at the same time since such use resulted in the excessive capacity of electricity and exceeded the range of the inverter control.I confirmed such air conditioner on/off operation leaded to the extreme drop in efficiency by the experiment. However, the on/off operation did not occur in Kitami since it has been air-cooled by 1 air conditioner in all rooms. From the viewpoint of its efficiency, it is desirable that a high thermal insulation house install an air conditioner in second floor hall etc. and it continuously keep the room temperature.I developed "Room temperature and load fluctuation analysis program" in which the accuracy of the calculation of the external wall with vent layers was improved. It was clarified that adopting a higher thermal insulation performance than that defined in the energy saving standard to houses in warmer areas also resulted in period cooling load decrease. Less

我调查了关西(京都、神户市)、东北(合津和松市)和北海道(北上市)的空调运行状况和室内环境与其隔热性能的关系。在和松市和北上县，从早晨开始使用空调，环境温度超过25℃，平均室温为26~27゜C。而在京都和神户，白天的空调使用率很低，只在晚上和睡前使用，平均室温为28~30℃。这种利用隔热性能的差异很小，因为关西的人们住在自己的房子里，窗户是开着的。他们的印象是，即使最高室温很低，高绝缘房屋也会因为通风性能不足而保持高温。在京都和神户，对高温的习惯性和对健康问题的担忧…空调使用的增多，上下温度梯度的不适，降低了空调的利用率。在和松，空调在所有房间同时使用时，频繁地重复开/关操作，导致电量过大，超出了逆变器控制的范围。我通过实验证实了这种空调开/关操作导致了效率的极大下降。然而，由于所有房间都有一台空调进行空气冷却，北上没有进行开/关操作。从效率的角度来看，高层隔热住宅应在二层大厅等处安装空调，并保持室内温度不变。我开发了“房间温度及荷载波动分析程序”，提高了带通风层的外墙的计算精度。研究表明，对较温暖地区的住宅采用高于节能标准的隔热性能，也会导致周期冷负荷的降低。较少