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STUDY ON MECHANICAL CENTRAL VENTILATION SYSTEMS SUITABLE ROR AIR-TIGHTENED HOUSES

适合ROR气密房屋的机械集中通风系统研究

基本信息

批准号：
06452298
负责人：
KOMINE Hiromi
金额：
$ 4.67万
依托单位：
CHIBA INSTITUTE OF TECHNOLOGY
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
1994
资助国家：
日本
起止时间：
1994 至 1996
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-06452298/
关键词：
air-tightened house mechanical central ventilation systems technical level for air tightness ventilation required infiltration air volume air flow path among rooms planned air-flow route for ventilation simulation program analyzing air flow

项目摘要

This study aims to arrange the technical guidelines for mechanical central ventilation systems suitable for air-tightened houses. In this paper, we called 2kinds of mechanical ventilation systems the duct system and the forced exhaust system respectively. With the duct system, supply fresh outdoor air is carried to each room with supply duct and forced fan, besides exhaust air from each room is flowed to a corridor through under-cut opening of door and is sucked to the mechanical ventilation unit. With forced exhaust system, exhaust air is sucked from a bathroom or a wash room and the pressure difference makes outdoor fresh air come in the room through a inlet installed on extemal wall.Results of full scale experiments to clarify the relations among the air-tightness of apartment houses, weather conditions, infiltration air volume and ventilation rate, sugested that higher technical level for air-tightness is required in order to work the forced exhaust system perfectly. The duct syste … More m is recommended for any air-tightened houses.Air flow resistance coefficients of under-cut opening of door, fresh air inlet installed on external wall, ventilation grille, door grille of bathroom, fusuma (Japanese traditional fitting) and so on, through which air flow path is made with mechanical ventilation systems, are measured and data base of input for simulation program analyzing air flow conditions with mechanical central ventilation systems are prepared.Simulation program analyzing air flow conditions with mechanical central ventilation systems are developed and verified. Various factors related with the mechanical central ventilation systems are checked by this simulation program. For example, pressure difference induced by temperature difference induce indoor air to go out through the openings located at the first floor level and outdoor air to flow in through the openings located at ground level in winter. Such air flow condition is not proper. Corrected height of opening at the first level improve air flow pattem. Forced supply and exhaust ventilation systems for kitchen ventilation and bathroom ventilation are recognized not to disturb the air flow path. Many technical data are summarized to the technical guidelines. Less

本研究旨在整理出适合密闭式住宅机械式中央通风系统的技术指引。本文将两种机械通风系统分别称为风道系统和强制排风系统。利用管道系统，供应新鲜的室外空气通过供应管道和强制风扇被输送到每个房间，此外，来自每个房间的排气通过门的下切开口流到走廊，并被吸入机械通风单元。强制排风系统是从浴室或盥洗室中抽出排风，利用压差使室外新鲜空气通过安装在外墙上的进风口进入室内。为阐明住宅的气密性、气象条件、渗透风量和通风量之间的关系，进行了足尺试验。建议提高强制排气系统的气密性技术水平。风管系统 ...更多信息 m的空气阻力系数。门的下切开口、安装在外墙上的新风入口、通风格栅、浴室的门格栅、富士屋的空气阻力系数（日本传统配件）等，通过这些配件用机械通风系统形成空气流动路径，并为分析机械集中通风系统气流状况的模拟程序准备了输入数据库开发并验证了机械中央通风系统的条件。利用该模拟程序对机械集中通风系统的各种影响因素进行了校核。例如，在冬季，由温度差引起的压力差引起室内空气通过位于第一楼层水平的开口流出，并且室外空气通过位于地面水平的开口流入。这样的空气流动状态是不合适的。第一层开口高度的修正改善了气流模式。厨房通风和浴室通风的强制送排风系统被认为不会干扰空气流动路径。许多技术数据被汇总到技术指南中。少