【《某高层酒店空调水系统设计计算过程案例》1300字】

某高层酒店空调水系统设计计算过程案例目录TOC\o"1-3"\h\u9241某高层酒店空调水系统设计计算过程案例 185891.1方案设计 1107171.2冷冻水系统设计 154001.3冷凝水系统设计 31.1方案设计本词设计采用闭式系统，管路为异程式、双管制空调冷热水系统。夏季冷冻水与冬季热水共同使用同一组管路。两种工况可利用在总供、回水管上的阀门进行转换。系统循环水量保持恒定，每条管路应按照夏季供冷工况设计。这种方式的优点有：系统形式较为简单、投资较少，节约成本，并尽可能的减少能耗。1.2冷冻水系统设计1）管材选择冷冻水供、回水管材采用无缝钢管，可承担较大的压力，韧性好。2）管径确定本设计使用假定流速法。合理选择管内流速，闭式系统冷、热水管内流速如下表所示：表6-1闭式系统冷、热水管内流速管径，mmDN20DN25DN32DN40DN50DN80DN100DN125DN150DN200DN250管内流速，m/s0.5-0.60.6-0.70.7-0.90.8-1.00.9-1.21.2-1.61.3-1.81.5-2.01.6-2.21.8-2.51.8-2.63)水力计算计算公式如下：沿程阻力：ΔPy式中Rml—管段长度，m。局部阻力：ΔPj式中ξ—局部阻力系数；ρ—水密度，kg/m3；v—水的流动速度m/s。总阻力：ΔP总以一层左区为例，进行计算：对该区域的水管标注管段编号并进行计算，计算结果如下表所示：表6-2一层左区水管水力计算表序号负荷，kW流量，kg/h管径管长，mν，m/s△Py，Pa△Pj，Pa△Py+△Pj，Pa1-2122.6321093.20DN801.51.15331.931988.232320.162-4100.7217320.40DN8013.50.952043.941340.603384.544-782.8714241.60DN7051.091233.912373.483607.397-872.5112470.00DN7050.95955.601364.782320.378-962.1510689.80DN705.20.82739.811002.931742.749-1051.798907.88DN703.50.68351.74691.431048.1810-1141.437125.96DN5050.901171.191207.672378.8611-1231.075332.00DN5050.67673.56671.151349.7112-1320.723560.40DN4050.751157.89841.841999.7313-1410.361781.92DN321.40.49804.56607.981412.54最不利环路压降21564.207Pa2-321.923612.00DN4030.76714.041444.022158.064-517.853070.20DN4020.65349.57625.98975.555-68.931530.80DN3270.42662.48448.691111.17其它楼层的冷冻水管选型及水力计算结果见附表6。本次设计建筑高度较高，进行垂直分区，1-13层为低区，14-24层为高区，分别由地下二层的制冷机房和顶部机房层制冷机房供冷。立管水力计算如下：表6-3低区左侧立管水力计算表序号负荷，kW流量，kg/h管径管长，mν，m/s△Py，Pa△Pj，Pa△Py+△Pj，Pa0-12024.07348140DN2501.21.86815.595213.646029.231-21901.44327832DN2004.82.461342.829095.54910438.372-31708.07293776DN2004.82.211082.927303.9688381.893-41499.47257828DN2004.81.94838.785625.8276464.614-51182.37203304DN20041.53439.763497.9863937.755-61031.78177332DN2003.61.33303.492661.342964.836-7902.81155144DN2003.61.17234.262037.0242271.297-8773.84132956DN1503.61.93945.155601.226541.378-9644.87110768DN1503.61.61661.913887.7244549.639-10515.8988580DN1503.61.29428.752481.2122914.9710-11381.9266392DN1253.61.37600.812808.743409.5511-12257.9544204DN1003.61.39810.652904.4563715.1112-13128.9722016DN803.61.20865.3421663031.34表6-4低区右侧立管水力计算表序号负荷，kW流量，kg/h管径管长，mν，m/s△Py，Pa△Pj，Pa△Py+△Pj，Pa0-1271.8247613DN1001.21.501612.833369.7424982.581-3205.4135330DN1009.61.111401.061855.3463251.40表6-5高区立管水力计算表序号负荷，kW流量，kg/h管径管长，mν，m/s△Py，Pa△Pj，Pa△Py+△Pj，Pa14-1561.6211455DN803.60.88584.651151.6881731.3415-16133.2522910DN803.61.25934.622345.5623280.1916-17199.8734366DN1003.61.08498.091755.4542253.5417-18261.4945838DN1003.61.44869.843123.1513992.9918-19333.1257293DN1253.61.18451.612091.6362543.2419-20399.7468748DN1253.61.42642.893011.6553654.5520-21461.3680221DN1253.61.65867.974100.6624968.6321-22532.9891659DN1503.61.33458.112662.0433120.16续表6-522-23599.61103200DN1503.61.50571.753374.633951.3823-24661.23114552DN1503.61.67701.674157.8814864.5524-0733.04126076DN1503.61.83851.975031.5325888.501.3冷凝水系统设计本次设计各层的冷凝水就近集中排放至卫生间的排水管道。冷凝水管材采用镀锌钢管，冷凝水管设水封。冷凝水支管设置坡度大于0.001，干管设置坡度大于0.002。冷凝水具体管径选择如下表：表6-6冷凝水管径Q，kW≤77.1~17.617.7~100101~176177~598599~10551056~15121513~12462DN202532405080100125以一层左区为例进行冷凝水管管径选型，管径如下表：表6-7一层左区冷凝水管径选型表序号负荷，kW管径，mm2-A