暖通冷负荷热负荷计算书

XXXX大学环境工程学院课程设计说明书课程 《暖通空调》班 级 姓 名 学 号 指导教师 年月第1篇采暖设计1工程概况1.1工程概况1、本工程建筑面积约1600面，砖混结构，层高均为3.6M。本工程建筑所在地湖北咸宁，供暖室外计算温度0.3℃.根据设计要求供暖室内设计温度为18℃2、窗均为铝合金推拉窗，窗高为1.5M采用中空双层玻璃，在满足建筑节能要求的前提下查得K=4w/(m2.℃).3、内门为木门，门高均为2M,在满足建筑节能要求的前提下查得K=2w/(m2.℃).4、走廊根据要求没有做供暖设计5、墙均为200空心砖墙，外墙做保温设计在满足建筑节能要求的前提下查得K=1亚/(而.℃).内墙在满足建筑节能要求的前提下查得K=1.5w/(m2.℃).6、走廊因为有两侧传热作用的存在查节能设计手册差的修正系数为0.37、冷风渗入由所在供暖房间窗布置情况和数量查建筑节能手册应用换气次数法计算而得。屋面为现浇为现浇板厚100MM，做保温和防漏水设计，在满足建筑节能要求的前提下查得K=0.8亚/(而.℃)2负荷计算2.1采暖负荷.围护结构耗热量(1)维护结构基本耗热量Q严KF(tn+twn)(2)维护结构附加耗热量①朝向修正率：北、东北、西北：0-+10%东、西 ： -5%东南、西南 ： -10%--15%南 ： -15%--30%.冷风渗透耗热量Q2=0.28CpPwnL(twn-tn)2.2算例：以四层办公室(编号为401)为例咸宁市为夏热冬冷地区，由《公共建筑节能设计标准》GB50189-2005查得夏热冬冷地区外围护结构外墙的传热系数K三1W/(m2-k),屋面传热系数三0.7W/(m2・k),窗墙面积比＞0.2,由《公共建筑节能设计标准》GB50189-2005查得窗的传热系数K三3.5W/(m2・k).

房间 围护结构室内室外传热室内外温差基本耗耗热量修正 冷风房间总热计算计算系数K计算修正热量朝向1风力修正 修正后 高度濠透耗负荷名栋方1面积计算温度tnt温度twC面枳（m2w/Cnr1-C)温差At系数口Q(W)正率附加值的热量 附加热量（W）墙窗堵墙堵窗墙窗墙热外外外外墙外外墙外外外堵顶间东西内门北北内北北西内门屋房室称议名会C(%:1%)(w)3.6+3.6-18C0.3C10.26117.71181.602501.05190.68210861.621.5+1.818C0.3C2.7417.71191.16501.05200.71804382.443.6+0.618c0.3C2.16117.7138.232-500.9536.320401+3.618C0.3c3.6117.7163.72-500.9560.53403.6+3.6-18c0.3C31.121.517.70.5413.118001413.11801+218C0.3c22.717.7195.5800195.5803.6+3.6-18t0.3c10.26117.71181.602501.05190.682101.5+1.818C0.3C2.7417.71191.16501.05200.71803.6+3.6-18t0.3c10.961.517.70.387.296400187.296403.6+3.918C0.3C11.341.517.71301.077501.05316.1308501.5+1.818t0.3c2.7417.71191.16501.05200.71806+3.618C0.3C21.6117.71382.32-500.95363.20403.6+3.9-18C0.3c12.041.517.70.395.898600195.898601+218C0.3C22.717.7195.5800195.5807-5+6+3-18C0.3c68.760.817.71973.642001973.6416国荷3520.8221四层供暖总热负荷 2296.87+970.36+^191-59+1756.4+2367.46+1421.841+1421.84+994.91+1399.12+4382.44二V节02.83=17.502KW建筑的总热负荷Q=lT502+13596*2+14866=59560W 建筑热负荷指标B=59560/1600=37.Sw/m2更多暖通毕业设计图纸、计算书、参考资料：/item.htm?id=550576768629暖通毕业设计：/item.htm?id=550576768629空调设计1工程概况本工程建筑为宾馆大楼，建筑地点在湖北咸宁，夏季空气调节室外计算干球温度为35.7℃夏季空气调节室外计算湿球温度为28.5℃空调室内计算温度26℃部分空调房间是25℃。由设计要求和建筑特点，设计选取外墙为5(民用建筑供暖通风与空气调节设计规范查得)K=0.61W/(m2.K)选取屋面为1(民用建筑供暖通风与空气调节设计规范查得)K=0.49W/(m2.K).外窗根据建筑窗户设计特点及应用选取的为铝合金玻璃窗(辐射率＜0.25,low-E中空玻璃，间隔层厚9mm,夹层为空气，框窗比为20%)K=2.2W/(^.K).内门在建筑节能的前提下选取空心砖墙体，两面抹灰，K=2W/(m2.K),门K=2W/(m2.K)。1,、内围护结构可按稳态传热计算,例如内门,内墙,在计算时查取夏季空气调节日平均计算温度再根据与空调房间相连的非空调房间有无热源情况对温度进行附加,然后根据计算公式计算。2、人员没有规定个数的按相关空调房间用途特性,查阅相关设计规范进行估算,然后再计算人员散热冷负荷。3、设备产热量按相关空调房间用途特性,查阅相关设计规范进行估算,然后再根据课本公式和所提供的修正系数进行修正,算出设备散热逐时冷负荷。4、照明可根据相关资料提供的照明功率密度,进行估算,查阅规范的照明冷负荷系数,计算照明逐时冷负荷。5、对人员停留在空调房间的时间,设备开启的连续时间,照明用具连续工作的时间进行可行性研究分析,保证在合理的情况下计算出相应的冷负荷。2.负荷计算算例1(以宾馆一层宾馆大堂为算例).北内墙冷负荷通过空调房间隔墙、楼板、内窗等内围护结构的温差传热而产生的冷负荷,可视为不随时间变化的稳定传热,按下式计算Q(t)=KA(To.m+ATa-Tr)Q(t)=0.8X8X4..2X(32.4+2-26)=158.6.西外墙冷负荷由《供暖通风与空气调节设计规范》续表H.0.1—3查得冷负荷计算温度逐时值，即可按课本公式2-7：Qc(t)=AK(t.c(t)-t.R)算出西外墙逐时冷负荷，计算结果如下表。.南外玻璃墙瞬时传热冷负荷根据ai=8.7W/(m2^K)>ao=3.5+5.6X2.1=15.26W/(m2-K),由附录2-8查得Kw=2.91W/(m2-K),再由附录2-9查得玻璃窗传热系数修正值。由附录2-10查出玻璃窗冷负荷计算温度tc(t)，根据暖通空调式(2-10)计算，计算结果如下表。时间9:0010:0011:0012:0013:0014:0015:0016:0017:0018:0019:0020:0021:0022:00tc(t)31.7032.3033.0033.6034.0034.3034.3034.2034.0033.6033.0032.4032.0031.60Atd0tR26At5.706.307.ooIt.608.008.308.308.208.007.60 |7.006.406.00 |5.60Kr2.91+1.2=3.492A12+4.2=50.4Qc(t)1003.181108.781231.981337.581407.971460.771460.771443.171407.971337.581231.981126.381055.98985.58.南外玻璃墙日射得热引起的冷负荷由《暖通空调》附录2-15查得双层钢窗有效面积系数Ca=0.75,所以窗的有效面积Aw=12X4.2X0.75=37.8mz.再由附录2-13查得遮挡系数Cs=0.74,由附录2-14查得遮阳系数Ci=0.5,所以综合遮阳系数Cc.s=0.74X0.5=0.37时间9:0010:0011:0012:0013:0014:0015:0016:0017:0018:0019:0020:0021:0022:00CLQ0.40.580.720.840.80.620.450.320.240.160.10.090.090.08Dj.max174Cc.s0.74+0.5=0.37A12*4.2*0.75=37.8Qc(t)973.42561411.4671752.1662044.1941946.8511508.811095.104778.7405584.0554389.3702243.3564219.0208219.0208194.6851.人员散热引起的冷负荷宾馆属于极轻劳动，查表2-13，当室温为26度，每人散发的潜热和显热量分别为86W和48W。由表2-12查得宾馆旅店群集系数3=0.93.再由附录2-23查得人体显热散热冷负荷系数逐时值。按式（2-22）计算人体显热散热逐时冷负荷。计算结果如下表。时间9:0010:0011:0012:0013:0014:0015:0016:0017:0018:0019:0020:0021:0022:00CLQ0.50.60.670.720.760.790.340.260.30.10.08QS8n10中0.93Qc(t)223.20267.84299.09321.41339.26352.66151.78116.0693.7480.3566.96,58.0344.6435.71ql86.00Qc799.80799.80799.30799.80799.80799.80799.80799.80799.80799.30799.80799.80799.80799.80合计1023.001067.641098.891121.211139.061152.46951.58915.86893.54880.15866.76857.83844.44835.51.照明散热形成的冷负荷由于明装荧光灯，镇流器装设在客房内，所以镇流器消耗功率系数n1取1,灯罩隔热系数n2取0.6。由附录2-22查得照明散热冷负荷系数，按公式（2-21）计算，计算结果如下表。7.将上述各表计算结果列如下表，并逐时相加，求得客房内冷负荷值。9:0010:0011:0012:0013:0014:0015:0016:0017:0018:0019:0020:0021:0022:00158.60158.60158.60158.60158.60158.60158.60158.60158.60158.60158.60158.60158.60158.60191.09185.60181.94178.28176.45176.45178.28181.94189.26198.41211.22224.04235.02244.171003.181108.781231.981337.581407.971460.771460.771443.171407.971337.581231.981126.381055.98985.58973.431411.471752.172044.191946.851508.811095.10778.74584.06389.37243.36219.02219.02194.691023.001067.641098.891121.211139.061152.46951.58915.86893.54880.15866.76857.83844.44835.51522.00675.00711.00720.00720.00729.00738.00747.00756.00774.00783.00351.00315.00279.003871.304607.095134.575559.865548.945186.094582.334225.323989.433738.113494.922936.872828.062697.55间墙墙窗荷射荷负负计内外外负日员荷光捺北西南热窗负人灯总8.冷负荷汇总1.宾馆一层冷负荷汇总如下表所示9:0010:0011:0012:0013:0014:0015:0016:0017:0018:0019:0020:0021:0022:00办公室1265.711752.742143.152477.492398.771962.921535.861203.87992.07769.49586.16522.59500.32452.92宾馆大号3871.304607.095134.575559.865548.945186.094582.334225.323989.433738.113494.922936.872828.062697.55中餐厅7073.407992.048673.969239.309225.098737.688001.897541.467229.336892.056563.745961.135825.585662.04餐厅大冷2242.362727.853137.553487.373485.593188.092736.592448.032251.422029.791818.671679.261612.701526.78总计15538.0917562.4119553.3121212.1321095.8519504.2617286.1615850.8214899.7313877.5612927.5611579.8811257.3310840.62由上表可看出宾馆最大冷负荷值出现在12:00,其值为21212.13W。算例2（以宾馆二层小包厢201为算例）1.北外墙冷负荷由《供暖通风与空气调节设计规范》续表H.0.1—3查得冷负荷计算温度逐时值，即可按课本公式2-7：Qc（t）=AK（t.c（t）-t.R）算出西外墙逐时冷负荷，计算结果如下表。时间9:0010:0011:0012:0013:0014:0015:0016:0017:0018:0019:0020:0021:0022:00tc(t)33.20■1033.0033.1033.2033.3033.5033.8034.0034.3034.6034.9035.1035.30Atd2.2ku1kp0.94tc⑴'33.2833.1833.0933.1833.2833.3733.5633.8434.0334.3134.5934.8735.0635.25tR26At7.287.187.097.187.287.377.567.848.038.318.598.87 |9.069.25K0.61A12Qc(t)53.2652.5751.8852.5753.2653.9555.3257.3958.7660.8362.8964.9666.3367.712.北外窗瞬时传热冷负荷根据ai=8.7W/(m2^K)>ao=3.5+5.6X2.1=15.26W/(m2-K),由附录2-8查得Kw=2.91W/(m2-K),再由附录2-9查得玻璃窗传热系数修正值。由附录2-10查出玻璃窗冷负荷计算温度tc(t)，根据暖通空调式(2-10)计算，计算结果如下表。时间9:0010:0011:0012:0013:0014:0015:0016:0017:0018:0019:0020:0021:0022:00tc(t)31.7032.3033.0033.6034.0034.3034.3034.2034.0033.6033.0032.4032.0031.60AtdCtR26At5.706.30It.ooIt.608.008.308.308.208.ooIt.607.006.406.00 |5.60Ew2.91+1.2=3.492A2.4+1.5=3.6Qc(t)71.6679.2088.0095.54100.57104.34104.34103.08100.5795.5488.0080.4675.4370.403北外窗日射得热引起的冷负荷由《暖通空调》附录2-15查得双层钢窗有效面积系数Ca=0.75,所以窗的有效面积Aw=12X4.2X0.75=37.8mz. 再由附录2-13查得遮挡系数Cs=0.78,由附录2-14查得遮阳系数Ci=0.5,所以综合遮阳系数Cc.s=0.78X0.5=0.39时间9:0010:0011:0012:0013:0014:0015:0016:0017:0018:0019:0020:0021:0022:00CLQ0.650.750.810.830.830.790.710.60.610.650.14Dj.max115Cc.s0.78+0.5=0.39A2.4+1.5+0.75=2.7Qc(t)78.7190.8298.09100.51100.5195.6785.9872.66 |73.8782.3420.5919.3818.1616.95西内墙和南内墙冷负荷通过空调房间隔墙、楼板、内窗等内围护结构的温差传热而产生的冷负荷，可视为不随时间变化的稳定传热，按下式计算Q(t)=KA(To.m+ATa-Tr)西内墙Q(t)=0.8X7.6X3.9X(32.4+2-26)=139.9南内墙Q(t)=0.8X4X3.9X(32.4+2-26)=73.6.人员散热引起的冷负荷宾馆属于极轻劳动，查表2-13，当室温为26度，每人散发的潜热和显热量分别为86W和48W。由表2-12查得宾馆旅店群集系数甲=0.93.再由附录2-23查得人体显热散热冷负荷系数逐时值。按式(2-22)计算人体显热散热逐时冷负荷。计算结果如下表。时间9:0010:0011:0012:0013:0014:0015:0016:0017:0018:0019:0020:0021:0022:00CLQ0.50.60.670.720.760.790.340.260.30.10.08qs48n10中0.93Qc(t)223.20267.84299.09321.41339.26352.66151.78116.0693.7480.3566.9658.0344.6435.71ql86.00Qc799.80799.80799.80799.80799.80799.80799.80799.80799.80799.80799.80799.80799.80799.80合计1023.001067.641098.891121.211139.061152.46951.58915.86893.54880.15866.76857.83844.44835.51.照明散热形成的冷负荷由于明装荧光灯，镇流器装设在客房内，所以镇流器消耗功率系数n1取1,灯罩隔热系数n2取0.6。由附录2-22查得照明散热冷负荷系数，按公式(2-21)计算，计算结果如下表。.将上述各表计算结果列如下表，并逐时相加，求得客房内冷负荷值。更多暖通毕业设计图纸、计算书、参考资料：/item.htm?id=550576768629毕业设计代做：/item.htm?id=550576768629墙堵墙荷窗荷射荷负负内内外外负日员有光荷西南北负北热窗负人灯9:00墙堵墙荷窗荷射荷负负内内外外负日员有光荷西南北负北热窗负人灯9:0010:0011:0012:0013:0014:0015:0016:0017:0018:0019:0020:0021:0022:00139.90139.90139.90139.90139.90139.90139.90139.90139.90139.90139.90139.90139.90139.9073.6073.6073.6073.6073.6073.6073.6073.6073.6073.6073.6073.6073.6073.6053.2652.5751.8852.5753.2653.9555.3257.3958.7660.8362.8964.9666.3367.7171.6679.2088.0095.54100.57104.34104.34103.08100.5795.5488.0080.4675.4370.4078.7190.8298.09100.51100.5195.6785.9872.6673.8782.3420.5919.3818.1616.951023.001067.641098.891121.211139.061152.46951.58915.86893.54880.15866.76857.83844.44835.5113.9218.0018.9619.2019.2019.4419.6819.9220.1620.6420.889.368.407.441454.051521.731569.321602.531626.101639.351430.401382.411360.411353.011272.621245.481226.271211.51.冷负荷汇总宾馆二层冷负荷汇总如下表所示9:0010:0011:0012:0013:0014:0015:0016:0017:0018:0019:0020:0021:0022:00201包厢1454.051521.731569.321602.531626.101639.351430.401382.411360.411353.011272.621245.481226.271211.51202包厢1314.151381.831429.421462.631486.201499.451290.501242.511220.511213.111132.721105.581086.371071.61203包厢1314.151381.831429.421462.631486.201499.451290.