如何计算小区给水系统的给排水量?

2024-12-30 00:00:55
推荐回答(2个)
回答1:

(一)小区给水系统
所在地理位置城市供水条件较好,东侧路有DN400mm 的市政给水管通过,北侧规划道路上有DN300mm 供水管网。经市政府主管单位批准在这二条市政管线上各接入DN200mm 的给水管线在小区内成环状管网,确保当一市政管网出现故障或检修时仍能保证小区的正常供水。
市政供水压力约 0.18MPa 至0.23MPa 为充分利用市政给水压力又能保证用户的用水可靠性,小区各栋住宅的4 层及4 层以下由市政给水管网供水。北区5栋住宅楼为最早开发施工,所以每栋设有生活加压泵、生活水池及屋顶水箱联合供水系统供本楼4 层以上住户的用水。每栋设有供水系统符合业主滚动式开发的要求,完成一栋就能人住一栋,及早取得经济效益。中区是较北区晚施工且是11 层低高层楼房所以他们的用水由北区6 号楼屋顶水箱供给。最后施工的南区4层以上的用水也与北区一样由每栋设有的生活加压泵、生活水池及屋顶水箱联合供水。
(二)小区用水量计算
根据《居住小区给水排水设计规范》中3,5,2,1 条,居住组团(人数3000
以内)范围内的生活给水管,设计流量按其负担的卫生器具总数,以现行《建筑
给水排水设计规范》的生活给水秒流量计算:
1.小区总人数为3411 人,比规范中的3000 人多411 人,我们按
最大小时流量计算时,发现管径比设计秒流量计算时小两号。考虑到小区面积较
大,南北距离较长,室外有三座喷水池,绿化喷灌,以及将来的发展,所以采用
设计秒流量来计算管径。
2.卫生洁具的总数计算:小区是中高档住宅小区,每户都有两个或两个以上的卫生间,尤其是每栋住宅楼顶层的复式住宅的卫生间更多,有的达到4 个。所以在计算卫生洁具数量时,如果按每户卫生间全部的洁具计算在内,设计管径会偏大(因规定每户按3.2 人计算人数)。经过调查了解后确定,每户按一个洗涤盆、大便器、浴盆以及洗衣机同时使用时来计算每栋住宅设计秒流量。
二、小区生活热水系统
住宅小区 24 小时供应生活热水,热媒是城市二次热水,业主要求热交换站集中设置在北六楼的地下室,热交换站由市热力设计院设计,提供高压的一供一回热水管道。
1.由于热水系统集中设置,热交换站只提供一供一回的高压热水管不利于冷热水压力平衡。为解决这个问题在每栋住宅楼的1—4 层热水进户管上设置了可调式减压阀,把每户用水点的热水压力调至与每户冷水压力相同,使用时不会出现热水忽冷忽热现象,不会出现热水烫伤人事件。
2.为了更加确保热水系统和冷水相同系统压力能平衡,在室外热水管网管
路采用了等流程设计。
3.小型住宅楼布置十分紧凑,两栋住宅楼之间的距离有限,为此管线拥挤,管线种类多,布置十分困难,所以热水管道采用了直埋预制保温管。使得室外管道交叉综合有所缓解。

回答2:

根据公式:最大小时用水量:Q=n*q*k/24000(m3/h)可以计算出给水量;Q=qNK/86400(L/s)就可计算出排水量了。四川博海供水有一篇文章是专门介绍给排水量计算的http://www.bhgongshui.com/html/978450318.html,可以看看。

希望采纳

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