thediscussionofwater-savingtechnologyaboutwatersupplyanddrainageinbuilding-外文文獻(xiàn)(已修改)
2025-05-31 12:30 本頁(yè)面
【正文】 The Discussion of Watersaving Technology about Water Supply and Drainage in Building Qi Junfeng1,*, Yang Yanyan2, Hu Linpeng3 1. School of Municipal and Environmental Engineering, Jilin Institute of Architecture and Civil Engineering, Changchun, 2. Department of Thermal Energy Engineering, Collage of Automobile Engineering, JiLin University, Changchun, 3. Yatai Real Estate Development Co., Ltd. Changchun, Changchun, Abstract—According to the present situation of building water supply and drainage, analyzing the watersaving techniques of building water supply and drainage to achieve effective utilization of water resource. The watersaving techniques mainly include reasonably limiting the pressure of water distribution points and avoiding overpressure flow。 perfecting hot water supply system and reducing ineffectual cold water。 adopting watersaving waterdispensing fixtures and sanitary ware。 promoting the utilization of highquality pipe and valve。 and improving the current construction of fire pool as well as developing and promoting the technology of utilization of reclaimed water and rainwater. Key wordsbuilding water supply and drainage。 water conservation。 techniques. I. INTRODUCTION Water is a strategic resource which is related to human survival and development. The total water resources in our country ranks sixth in the world, but the per capita possession of water resources is only a quarter of world average. The distribution of water resources is extremely uneven in our country, and twothirds of cities nationwide have varying degrees water shortage. In recent years, city life suffers growing shortage of water resources and water pollution, which not only distress the people39。s livelihood but also has bee a major constraining factor that preventing socioeconomic sustainable development. Therefore, we should focus on watersaving. Construction watersaving is system engineering. Except for formulating relevant laws and regulations related to watersaving, strengthening daily management and public education, using price leverage to promote water saving, in addition effective technical measures should be taken to ensure the implementation of construction watersaving thoroughly [1] . II. REASONABLE LIMIT THE PRESSURE OF WATER DISTRIBUTION POINTS AND AVOID OVERPRESSURE FLOW In article of Code for Design of Building of Water Supply and Drainage, domestic water supply system of highrise building should be vertical division. The hydrostatic pressure of residential water distribution points is less than MPa, while office building’s is less than MPa. In special circumstances the hydrostatic pressure is less than MPa。Although the code makes certain restrictive provision for the maximum pressure of water supply fittings and service pipe, this is considered from preventing the damage caused by high pressure of water supply fittings not from the angle of preventing overpressure flow. An experimental result of a watersaving tap shows that the maximum flow rate is L/s when tap fully open, the corresponding dynamic pressure is MPa and hydrostatic pressure is MPa. According to the rated flow q = 0. 15 L/s which is regarded as the standard, the flow rate when watersaving tap fully open is 3 times of the rated flow. In another measured survey for 67 taps, there were 47 taps which exceeded the rated flow [2]. The overlimit ratio reaches 61%. Therefore, the problem of overpressure flow in water supply system is serious and following measures should be adopted. A. Reasonably determine the pressure of water supply The pressure of water supply subarea should be acted according to Code for Design of Building of Water Supply and Drainage, while the best use hydraulic pressure of sanitary wares is b
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