长沙市中医院办公楼及食堂中央空调设计建筑环境工程专业毕业设计毕业论文.doc

CENTRAL SOUTH UNIVERSITY本科生毕业论文（设计）题 目 长沙市中医院办公楼及食堂中央空调设计学生姓名 指导教师 学 院 能源科学与工程学院 专业班级 建环完成时间 摘 要本设计为长沙市中医院（长沙市第八医院）办公楼及食堂空调设计，该建筑西边为七层办公楼，东边为两层食堂。根据本建筑的功能特点，选取了全空气系统和风机盘管+独立新风系统混用的空调方式，对于食堂采用全空气系统，办公楼用风机盘管+独立新风系统。独立新风+风机盘管的空调方式是由风机盘管承担室内所有冷负荷，而新风负荷由各层新风机组来承担，新风通过新风机组处理到与室内等焓值的状态，直接送入房间。该设计详细介绍了系统方案的确定和该系统的冷负荷的计算、新风量的计算、设备的选型、风系统、水系统的水力计算。最后本设计还对相应的消声、减振作了简明的介绍。关键词：全空气系统 一次回风系统 风机盘管加新风系统 AbstractThe design for the Chinese medicine hospital in Changsha (Changsha VIII Hospital) office building and the cafeteria air conditioning design, the seven-story office building west to the east for the two canteens.According to the construction features, select the entire air system and fan coil + DOAS mix of air conditioning, all-air system for the cafeteria, office buildings with fan coil + independent air system. Independent fresh air + fan coil fan coil air-conditioning mode is borne by the indoor cooling load of all, the new wind load from the floors to bear the new air unit, new air handling unit through the fresh air to the enthalpy and Interior and other state, directly into the room.The design details of the program to determine the system and the systems cooling load calculation, fresh air of calculation, equipment selection, air system, water system hydraulic calculation. Finally, the design is also appropriate silencers, vibration gave a concise description.Key words：air distribution entire air system73 目 录第1章 绪论41.1建筑概况41.2工程施工条件5第2章 空调负荷计算62.1 计算参数62.2 负荷计算方法72.3夏季负荷参数的确定9第3章 空调系统方案选择303.1确定空调系统方案的因素303.2空调系统的选择31第4章 风机盘管的选型计算324.1风机盘管机组选择计算324.2风机盘管的布置344.3新风机组的选择与计算354.4全空气系统空调机组的选择与计算36第5章 风管水力计算375.1吊顶式风机盘管机组的布置375.2风速大小的确定375.3风管水力计算385.4计算汇总44第6章 空调水系统的设计计算456.1空调水系统方案的确定456.2冷冻水系统水力计算45第7章 泵及消声减压保温667.1冷冻水泵的选取667.2膨胀水箱设计687.3消声、减振与保温设计69第1章 绪论1.1建筑概况1.1.1建筑构成本设计为长沙市中医院（长沙市第八医院）办公楼及食堂空调设计，该建筑西边为七层办公楼，东边为两层食堂。总建筑面积为1227平方米。1.1.2围护结构构造与热工特性外墙：外墙选用砖墙（白灰粉刷） =370mm k=1.494W/m2.k ；内墙：选用砖墙（白灰粉刷） =240mm k=1.962 W/m2.k ；楼板选用楼面-30：传热系数k=1.052W/m2.k ；屋顶上人屋面- 炉渣混凝土聚苯板k=0.39 W/m2.k；外窗6m单层玻璃窗： Cc，s=0.83，Ca=0.85，KC=6.01 W/m2.k1.1.3设计内容空调各功能区域空调负荷的计算；各系统方案的确定；空气处理设备、制冷制热设备的选择计算；水系统设计计算及水泵选择；各系统的消声与抗震；1.2工程施工条件1.2.1设计地点位置地名地理位置大气压力(hPa)北纬东经海拔(m)夏季长沙28121130544.9m999.401.2.2设计地点室外空调设计参数夏 季夏季空调室外计算湿球温度()室外计算相对湿度(%)室外风速(m/s)空调室外计算干球温度()室外日平均计算温度()平 均日较差最热月月平均夏季平均35.832.07.327.7752.61.2.3室内设计参数房间类型夏季工作区风速（ ）新风标准（m3/h.人）室温（）相对湿度商场25600.312餐厅25600.320客房24600.2540小会议室25600.325大会议室25600.325准备室25600.330办公室25600.330第2章 空调负荷计算2.1 计算参数由采暖与空调设计手册书查得，室外计算参数如下：室外计算干球温度室外计算湿球温度室外计算相对湿度冬季空调夏季空调夏季冬季夏季335.827.77761室外风速m/s大气压（）冬夏冬夏2.62.510159199458室内计算参数：室内温度相对湿度新风量人员密度冬夏冬夏人会议室22262830406070500.71.5餐厅22273055200.5公共部分222740608.50.4活动中心22273050300.2办公室22273045 250.2厨房2230- 全0.22.2 负荷计算方法采用冷负荷系数法。2.2.1 墙体传热引起的冷负荷墙体引起的冷负荷可按下式计算： （1）墙的冷负荷计算温度的逐时值，室内设计温度，墙体面积，对进行修正后得冷负荷计算温度的逐时值 （2）按地区和朝向的修正值，当外表面传热系数不等于18.6W/()时的修正系数， 此处，1。围护物表面有持久浅色或中色时的吸收系数修正值， 此处， 1。2.2.2 门传热引起的冷负荷门传热引起的冷负荷计算公式如下： （3） 门面积， K玻璃门的传热系数，W/() 玻璃门的负荷计算温度的逐时值， 2.2.3. 玻璃门日射得热引起的冷负荷无外遮阳玻璃门日射得热引起的冷负荷按下式计算。 (5)玻璃门的有效面积系数，此处，按单层钢窗，=0.85，-地点修正系数，此处，=1，玻璃门的综合遮挡系数，其中为门玻璃遮挡系数，为门内遮阳设施的遮阳系数。由建筑物及汽车空调负荷查得，0.83, =0.60, 所以=830.60=0.498。 计算时刻时，透过单位玻璃面积的太阳总辐射形成的冷负荷，W/ 冷负荷系数， 2.2.4 内部热源引起的冷负荷1.照明散热引起的冷负荷 2.设备散热引起的冷负荷3.人体散热引起的冷负荷 人体散热与性别、年龄、衣着、劳动强度和周围环境条件（温湿度）等多种因素有关。由于性质不同的建筑物中有不同比例的成年男子、女子和儿童数量，而成年女子和儿童的散热量低于成年男子。为了实际计算方便，可以成年男子为基础，乘以考虑了各类人员组成比例的系数。显热散热冷负荷计算按下式计算： (6)q -不同室温和劳动性质是成年男子散热量，W;-室内全部人数；群集系数，由高层建筑空调与节能查得，0.89。2.3夏季负荷参数的确定夏季计算经围护结构传入室内的热量时，由于受外界日变化影响较大，应按不稳定传热过程计算。下面计算过程是采用冷负荷系数法。2.3.1 墙体传热引起的冷负荷查空气调节设计手册得，其传热系数。序号15，=300长沙市墙体的负荷温差891011121314151617181920S999101010101010101099W10111112131313141413131313N8899999999999E131313131313131312121212112.3.2 门传热引起的冷负荷各时刻温度计算公式查空调与制冷技术手册tw,max=35.8oC,tw=7.3 oC,门传热系数。各时刻值及温差t(=tw,-tn)列表如下：8910111213141516171819200.700.540.380.250.140.070.020.000.030.100.200.330.46t4.695.867.037.988.789.299.659.89.589.078.347.396.442.3.3 玻璃窗传热引起的冷负荷各时刻温度计算公式查空调与制冷技术手册tw,max=35.8oC,tw=7.3 oC,门传热系数各时刻值及温差t(=tw,-tn)列表如下：8910111213141516171819200.700.540.380.250.140.070.020.000.030.100.200.330.46t4.695.867.037.988.789.299.659.89.589.078.347.396.442.3.4 玻璃门日射得热引起的冷负荷长沙地区夏季通过单层3mm厚普通玻璃进入室内的太阳辐射热（w/m2）房间类型朝向891011121314中S33.0645.2466.1286.1399.1899.1887W45.958.1468.3475.4880.58131.6227.46N49.4457.6867.9875.1980.3481.3779.31E322.3334.6292.7213.2153138.7125.46房间类型朝向151617181920中S70.4752.2346.1132.1922.6218.27W308.0349.9337.6268.26114.285.68N73.1365.9269.0171.0729.8722.66E110.294.8675.4856.140.832.642.3.5 内部热源引起的冷负荷照明、设备造成的冷负荷假定室内有200W的照明设备（考虑了部分电热设备），连续使用时间8：0020：00。查空气调节附录2-14得照明系数及照明造成的冷负荷：891011121314151617181920Jl-T00.460.660.720.770.810.840.870.890.900.920.930.94Q0921321421541621681741781801841861882.3.6 人体散热散湿冷负荷人体散热、散湿量计算在室内温度下按轻度劳动成年男子考虑，潜热散热量为123W，显热为58W，散湿量184W/h。查空气调节附录2-16选房间类型为中型，连续工作时间为12小时，人体显热散热的负荷系数JP-T：891011121314151617181920JP-T00.550.730.780.820.850.880.900.910.920.940.940.95Qx031.942.345.247.649.351.052.252.853.454.554.555.12.3.7 屋顶传热冷负荷屋顶散热计算：确定屋顶传热系数：选用采暖空调制冷手册序号27型屋顶。组成为：23二毡三油绿豆砂+13水泥砂浆+6钢筋混凝土板+14白灰粉刷，=60。传热系数：t屋顶各时刻传热温差891011121314151617181920t00.550.730.780.820.850.880.900.910.920.940.940.952各层房间负荷计算表二层食堂空调负荷计算表计算时刻8:009:0010:0011:0012:0013:0014:0015:0016:0017:0018:0019:00101房间冷负荷内结构计算温度30.0030.0030.0030.0030.0030.0030.0030.0030.0030.0030.0030.00计算温差4.004.004.004.004.004.004.004.004.004.004.004.00传热系数1.97面积24.10冷负荷189.91189.91189.91189.91189.91189.91189.91189.91189.91189.91189.91189.91内结构计算温度30.0030.0030.0030.0030.0030.0030.0030.0030.0030.0030.0030.00计算温差4.004.004.004.004.004.004.004.004.004.004.004.00传热系数1.97面积14.00冷负荷110.32110.32110.32110.32110.32110.32110.32110.32110.32110.32110.32110.32内结构计算温度30.0030.0030.0030.0030.0030.0030.0030.0030.0030.0030.0030.00计算温差4.004.004.004.004.004.004.004.004.004.004.004.00传热系数1.97面积14.00冷负荷110.32110.32110.32110.32110.32110.32110.32110.32110.32110.32110.32110.32人体显热负荷7.556.476.474.3256.1066.8921.5878.7531.2923.7370.1278.75人体潜热负荷0.000.000.00228.78228.78228.780.000.000.00228.78228.78228.78灯光冷负荷6.145.534.9721.4236.1337.8716.6314.9213.2328.5043.0044.00湿负荷人体湿负荷0.000.000.000.340.340.340.000.000.000.340.340.34新风湿负荷0.000.000.000.520.520.520.000.000.000.520.520.52冷负荷放大系数： 1.00 湿负荷放大系数： 1.00小计冷负荷小计（W）（不含新风）424.24422.55421.99665.07731.56744.08448.75504.22455.06691.56752.45762.08新风冷负荷（W）0.000.000.00559.02559.02559.020.000.000.00559.02559.02559.02冷负荷小计（W）（含新风）424.24422.55421.991224.081290.571303.10448.75504.22455.061250.581311.471321.10湿负荷小计（kg/h）（不含新风）0.000.000.000.340.340.340.000.000.000.340.340.34新风湿负荷（kg/h）0.000.000.000.520.520.520.000.000.000.520.520.52湿负荷小计（kg/h）（含新风）0.000.000.000.870.870.870.000.000.000.870.870.87最大冷负荷（不含新风）出现在: 19:00点钟； 最大冷负荷（不含新风）为: 762.08 W 面积：26.10 m2 冷负荷指标：29.20 W/m2最大湿负荷（不含新风）出现在: 11:00点钟； 最大湿负荷（不含新风）为: 0.34 kg/h 面积：26.10 m2 湿负荷指标：0.01 kg/(h.m2)102房间冷负荷北外墙计算温度34.3434.1433.8533.6633.4733.3733.2733.2733.3733.4733.6633.85计算温差8.348.147.857.667.477.377.277.277.377.477.667.85传热系数1.97面积9.30冷负荷152.76149.21143.87140.32136.77134.99133.21133.21134.99136.77140.32143.87北外窗计算温度29.9030.9032.0032.9033.8034.5034.9035.2035.2035.0034.6033.80照光面积4.004.004.004.004.004.004.004.004.004.004.004.00阴影面积0.000.000.000.000.000.000.000.000.000.000.000.00日射得热因数照光部分日射得热因数的最大值115.00 阴影部分得热因数的最大值115.00日射冷负荷124.04149.31172.28186.07190.66190.66181.47163.10137.83140.12156.2039.05传热冷负荷38.3148.1358.9467.7876.6283.5087.4290.3790.3788.4184.4876.62总冷负荷162.35197.45231.22253.85267.28274.16268.90253.47228.20228.53240.68115.67内结构计算温度30.0030.0030.0030.0030.0030.0030.0030.0030.0030.0030.0030.00计算温差4.004.004.004.004.004.004.004.004.004.004.004.00传热系数1.97面积24.10冷负荷189.91189.91189.91189.91189.91189.91189.91189.91189.91189.91189.91189.91内结构计算温度30.0030.0030.0030.0030.0030.0030.0030.0030.0030.0030.0030.00计算温差4.004.004.004.004.004.004.004.004.004.004.004.00传热系数1.97面积14.00冷负荷110.32110.32110.32110.32110.32110.32110.32110.32110.32110.32110.32110.32人体显热负荷7.556.476.474.3256.1066.8921.5878.7531.2923.7370.1278.75人体潜热负荷0.000.000.00228.78228.78228.780.000.000.00228.78228.78228.78灯光冷负荷6.145.534.9721.4236.1337.8716.6314.9213.2328.5043.0044.00湿负荷人体湿负荷0.000.000.000.340.340.340.000.000.000.340.340.34新风湿负荷0.000.000.000.520.520.520.000.000.000.520.520.52冷负荷放大系数： 1.00 湿负荷放大系数： 1.00小计冷负荷小计（W）（不含新风）629.03658.88686.77948.911025.281042.91740.54780.58707.93946.541023.13911.31新风冷负荷（W）0.000.000.00559.02559.02559.020.000.000.00559.02559.02559.02冷负荷小计（W）（含新风）629.03658.88686.771507.931584.301601.92740.54780.58707.931505.561582.151470.32湿负荷小计（kg/h）（不含新风）0.000.000.000.340.340.340.000.000.000.340.340.34新风湿负荷（kg/h）0.000.000.000.520.520.520.000.000.000.520.520.52湿负荷小计（kg/h）（含新风）0.000.000.000.870.870.870.000.000.000.870.870.87最大冷负荷（不含新风）出现在: 13:00点钟； 最大冷负荷（不含新风）为: 1042.91 W 面积：26.10 m2 冷负荷指标：39.96 W/m2最大湿负荷（不含新风）出现在: 11:00点钟； 最大湿负荷（不含新风）为: 0.34 kg/h 面积：26.10 m2 湿负荷指标：0.01 kg/(h.m2)103房间冷负荷北外墙计算温度34.3434.1433.8533.6633.4733.3733.2733.2733.3733.4733.6633.85计算温差8.348.147.857.667.477.377.277.277.377.477.667.85传热系数1.97面积8.60冷负荷141.26137.98133.05129.76126.47124.83123.19123.19124.83126.47129.76133.05北外窗计算温度29.9030.9032.0032.9033.8034.5034.9035.2035.2035.0034.6033.80照光面积14.7114.7114.7114.7114.7114.7114.7114.7114.7114.7114.7114.71阴影面积0.000.000.000.000.000.000.000.000.000.000.000.00日射得热因数照光部分日射得热因数的最大值115.00 阴影部分得热因数的最大值115.00日射冷负荷727.16828.63947.001031.561082.291116.111116.111065.38997.731082.291082.29642.61传热冷负荷396.05497.60609.31700.70792.10863.18903.80934.27934.27913.96873.34792.10总冷负荷1123.211326.231556.311732.261874.391979.292019.911999.651932.001996.251955.631434.71内结构计算温度30.0030.0030.0030.0030.0030.0030.0030.0030.0030.0030.0030.00计算温差4.004.004.004.004.004.004.004.004.004.004.004.00传热系数1.97面积24.10冷负荷189.91189.91189.91189.91189.91189.91189.91189.91189.91189.91189.91189.91内结构计算温度30.0030.0030.0030.0030.0030.0030.0030.0030.0030.0030.0030.00计算温差4.004.004.004.004.004.004.004.004.004.004.004.00传热系数1.97面积25.90冷负荷204.09204.09204.09204.09204.09204.09204.09204.09204.09204.09204.09204.09人体显热负荷7.556.476.474.3256.1066.8921.5878.7531.2923.7370.1278.75人体潜热负荷0.000.000.00228.78228.78228.780.000.000.00228.78228.78228.78灯光冷负荷6.145.534.9721.4236.1337.8716.6314.9213.2328.5043.0044.00湿负荷人体湿负荷0.000.000.000.340.340.340.000.000.000.340.340.34新风湿负荷0.000.000.000.520.520.520.000.000.000.520.520.52冷负荷放大系数： 1.00 湿负荷放大系数： 1.00小计冷负荷小计（W）（不含新风）1672.171870.202094.802510.532715.872831.652575.312610.502495.342797.732821.292313.28新风冷负荷（W）0.000.000.00559.02559.02559.020.000.000.00559.02559.02559.02冷负荷小计（W）（含新风）1672.171870.202094.803069.553274.883390.672575.312610.502495.343356.753380.302872.30湿负荷小计（kg/h）（不含新风）0.000.000.000.340.340.340.000.000.000.340.340.34新风湿负荷（kg/h）0.000.000.000.520.520.520.000.000.000.520.520.52湿负荷小计（kg/h）（含新风）0.000.000.000.870.870.870.000.000.000.870.870.87最大冷负荷（不含新风）出现在: 13:00点钟； 最大冷负荷（不含新风）为: 2831.65 W 面积：48.20 m2 冷负荷指标：58.75 W/m2最大湿负荷（不含新风）出现在: 11:00点钟； 最大湿负荷（不含新风）为: 0.34 kg/h 面积：48.20 m2 湿负荷指标：0.01 kg/(h.m2)104房间冷负荷北外墙计算温度34.3434.1433.8533.6633.4733.3733.2733.2733.3733.4733.6633.85计算温差8.348.147.857.667.477.377.277.277.377.477.667.85传热系数1.97面积53.20冷负荷873.86853.52823.03802.69782.36772.20762.03762.03772.20782.36802.69823.03东外墙计算温度37.2536.7636.4736.2836.2836.4736.8637.3537.8338.3238.7039.09计算温差11.2510.7610.4710.2810.2810.4710.8611.3511.8312.3212.7013.09传热系数1.97面积16.60冷负荷367.83351.97342.46336.11336.11342.46355.14371.00386.86402.73415.41428.10西外墙计算温度38.9938.5138.0237.5437.1536.7636.4736.1836.0836.0836.1836.57计算温差12.9912.5112.0211.5411.1510.7610.4710.1810.0810.0810.1810.57传热系数1.97面积29.80冷负荷762.83734.35705.88677.41654.63631.85614.77597.69591.99591.99597.69620.46南外窗计算温度29.9030.9032.0032.9033.8034.5034.9035.2035.2035.0034.6033.80照光面积48.7148.7148.7148.7148.7148.7148.7148.7148.7148.7148.7148.71阴影面积0.000.000.000.000.000.000.000.000.000.000.000.00日射得热因数照光部分日射得热因数的最大值173.00 阴影部分得热因数的最大值115.00日射冷负荷1769.452359.273286.134128.724550.025476.885055.583538.913033.352696.312275.011937.97传热冷负荷1311.771648.122018.112320.822623.542858.982993.523094.433094.433027.162892.622623.54总冷负荷3081.224007.395304.236449.547173.568335.868049.106633.336127.785723.475167.634561.51北外窗计算温度29.9030.9032.0032.9033.8034.5034.9035.2035.2035.0034.6033.80照光面积44.1244.1244.1244.1244.1244.1244.1244.1244.1244.1244.1244.12阴影面积0.000.000.000.000.000.000.000.000.000.000.000.00日射得热因数照光部分日射得热因数的最大值115.00 阴影部分得热因数的最大值115.00日射冷负荷2181.492485.882841.013094.673246.863348.333348.333196.132993.203246.863246.861927.83传热冷负荷1188.151492.801827.922102.112376.292589.552711.412802.812802.812741.882620.022376.29总冷负荷3369.633978.684668.925196.775623.165937.886059.745998.945796.015988.745866.884304.12东外窗计算温度29.9030.9032.0032.9033.8034.5034.9035.2035.2035.0034.6033.80照光面积29.6729.6729.6729.6729.6729.6729.6729.6729.6729.6729.6729.67阴影面积0.000.000.000.000.000.000.000.000.000.000.000.00日射得热因数照光部分日射得热因数的最大值538.00 阴影部分得热因数的最大值115.00日射冷负荷7820.299575.868937.475905.114628.334628.334468.744149.543830.343511.153032.362713.16传热冷负荷798.971003.831229.181413.551597.931741.341823.281884.741884.741843.771761.821597.93总冷负荷8619.2510579.6910166.657318.676226.266369.676292.026034.285715.085354.924794.184311.09西外窗计算温度29.9030.9032.0032.9033.8034.5034.9035.2035.2035.0034.6033.80照光面积14.4514.4514.4514.4514.4514.4514.4514.4514.4514.4514.4514.45阴影面积0.000.000.000.000.000.000.000.000.000.000.000.00日射得热因数照光部分日射得热因数的最大值538.00 阴影部分得热因数的最大值115.00日射冷负荷1166.121243.861321.601321.601399.341943.532876.423653.834042.534819.944275.761865.78传热冷负荷389.18488.97598.74688.55778.36848.22888.13918.07918.07898.11858.19778.36总冷