暖通冷負荷熱負荷計算書

XXXX大學(xué)環(huán)境工程學(xué)院課程設(shè)計說明書課程 《暖通空調(diào)》班 級 姓 名 學(xué) 號 指導(dǎo)教師 年月第1篇采暖設(shè)計1工程概況1.1工程概況1、本工程建筑面積約1600面，磚混結(jié)構(gòu)，層高均為3.6M。本工程建筑所在地湖北咸寧，供暖室外計算溫度0.3℃.根據(jù)設(shè)計要求供暖室內(nèi)設(shè)計溫度為18℃2、窗均為鋁合金推拉窗，窗高為1.5M采用中空雙層玻璃，在滿足建筑節(jié)能要求的前提下查得K=4w/(m2.℃).3、內(nèi)門為木門，門高均為2M,在滿足建筑節(jié)能要求的前提下查得K=2w/(m2.℃).4、走廊根據(jù)要求沒有做供暖設(shè)計5、墻均為200空心磚墻，外墻做保溫設(shè)計在滿足建筑節(jié)能要求的前提下查得K=1亞/(而.℃).內(nèi)墻在滿足建筑節(jié)能要求的前提下查得K=1.5w/(m2.℃).6、走廊因為有兩側(cè)傳熱作用的存在查節(jié)能設(shè)計手冊差的修正系數(shù)為0.37、冷風(fēng)滲入由所在供暖房間窗布置情況和數(shù)量查建筑節(jié)能手冊應(yīng)用換氣次數(shù)法計算而得。屋面為現(xiàn)澆為現(xiàn)澆板厚100MM，做保溫和防漏水設(shè)計，在滿足建筑節(jié)能要求的前提下查得K=0.8亞/(而.℃)2負荷計算2.1采暖負荷.圍護結(jié)構(gòu)耗熱量(1)維護結(jié)構(gòu)基本耗熱量Q嚴KF(tn+twn)(2)維護結(jié)構(gòu)附加耗熱量①朝向修正率：北、東北、西北：0-+10%東、西 ： -5%東南、西南 ： -10%--15%南 ： -15%--30%.冷風(fēng)滲透耗熱量Q2=0.28CpPwnL(twn-tn)2.2算例：以四層辦公室(編號為401)為例咸寧市為夏熱冬冷地區(qū)，由《公共建筑節(jié)能設(shè)計標準》GB50189-2005查得夏熱冬冷地區(qū)外圍護結(jié)構(gòu)外墻的傳熱系數(shù)K三1W/(m2-k),屋面?zhèn)鳠嵯禂?shù)三0.7W/(m2?k),窗墻面積比＞0.2,由《公共建筑節(jié)能設(shè)計標準》GB50189-2005查得窗的傳熱系數(shù)K三3.5W/(m2?k).

房間 圍護結(jié)構(gòu)室內(nèi)室外傳熱室內(nèi)外溫差基本耗耗熱量修正 冷風(fēng)房間總熱計算計算系數(shù)K計算修正熱量朝向1風(fēng)力修正 修正后 高度濠透耗負荷名棟方1面積計算溫度tnt溫度twC面枳（m2w/Cnr1-C)溫差A(yù)t系數(shù)口Q(W)正率附加值的熱量 附加熱量（W）墻窗堵墻堵窗墻窗墻熱外外外外墻外外墻外外外堵頂間東西內(nèi)門北北內(nèi)北北西內(nèi)門屋房室稱議名會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國荷3520.8221四層供暖總熱負荷 2296.87+970.36+^191-59+1756.4+2367.46+1421.841+1421.84+994.91+1399.12+4382.44二V節(jié)02.83=17.502KW建筑的總熱負荷Q=lT502+13596*2+14866=59560W 建筑熱負荷指標B=59560/1600=37.Sw/m2更多暖通畢業(yè)設(shè)計圖紙、計算書、參考資料：/item.htm?id=550576768629暖通畢業(yè)設(shè)計：/item.htm?id=550576768629空調(diào)設(shè)計1工程概況本工程建筑為賓館大樓，建筑地點在湖北咸寧，夏季空氣調(diào)節(jié)室外計算干球溫度為35.7℃夏季空氣調(diào)節(jié)室外計算濕球溫度為28.5℃空調(diào)室內(nèi)計算溫度26℃部分空調(diào)房間是25℃。由設(shè)計要求和建筑特點，設(shè)計選取外墻為5(民用建筑供暖通風(fēng)與空氣調(diào)節(jié)設(shè)計規(guī)范查得)K=0.61W/(m2.K)選取屋面為1(民用建筑供暖通風(fēng)與空氣調(diào)節(jié)設(shè)計規(guī)范查得)K=0.49W/(m2.K).外窗根據(jù)建筑窗戶設(shè)計特點及應(yīng)用選取的為鋁合金玻璃窗(輻射率＜0.25,low-E中空玻璃，間隔層厚9mm,夾層為空氣，框窗比為20%)K=2.2W/(^.K).內(nèi)門在建筑節(jié)能的前提下選取空心磚墻體，兩面抹灰，K=2W/(m2.K),門K=2W/(m2.K)。1,、內(nèi)圍護結(jié)構(gòu)可按穩(wěn)態(tài)傳熱計算,例如內(nèi)門,內(nèi)墻,在計算時查取夏季空氣調(diào)節(jié)日平均計算溫度再根據(jù)與空調(diào)房間相連的非空調(diào)房間有無熱源情況對溫度進行附加,然后根據(jù)計算公式計算。2、人員沒有規(guī)定個數(shù)的按相關(guān)空調(diào)房間用途特性,查閱相關(guān)設(shè)計規(guī)范進行估算,然后再計算人員散熱冷負荷。3、設(shè)備產(chǎn)熱量按相關(guān)空調(diào)房間用途特性,查閱相關(guān)設(shè)計規(guī)范進行估算,然后再根據(jù)課本公式和所提供的修正系數(shù)進行修正,算出設(shè)備散熱逐時冷負荷。4、照明可根據(jù)相關(guān)資料提供的照明功率密度,進行估算,查閱規(guī)范的照明冷負荷系數(shù),計算照明逐時冷負荷。5、對人員停留在空調(diào)房間的時間,設(shè)備開啟的連續(xù)時間,照明用具連續(xù)工作的時間進行可行性研究分析,保證在合理的情況下計算出相應(yīng)的冷負荷。2.負荷計算算例1(以賓館一層賓館大堂為算例).北內(nèi)墻冷負荷通過空調(diào)房間隔墻、樓板、內(nèi)窗等內(nèi)圍護結(jié)構(gòu)的溫差傳熱而產(chǎn)生的冷負荷,可視為不隨時間變化的穩(wěn)定傳熱,按下式計算Q(t)=KA(To.m+ATa-Tr)Q(t)=0.8X8X4..2X(32.4+2-26)=158.6.西外墻冷負荷由《供暖通風(fēng)與空氣調(diào)節(jié)設(shè)計規(guī)范》續(xù)表H.0.1—3查得冷負荷計算溫度逐時值，即可按課本公式2-7：Qc(t)=AK(t.c(t)-t.R)算出西外墻逐時冷負荷，計算結(jié)果如下表。.南外玻璃墻瞬時傳熱冷負荷根據(jù)ai=8.7W/(m2^K)>ao=3.5+5.6X2.1=15.26W/(m2-K),由附錄2-8查得Kw=2.91W/(m2-K),再由附錄2-9查得玻璃窗傳熱系數(shù)修正值。由附錄2-10查出玻璃窗冷負荷計算溫度tc(t)，根據(jù)暖通空調(diào)式(2-10)計算，計算結(jié)果如下表。時間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.南外玻璃墻日射得熱引起的冷負荷由《暖通空調(diào)》附錄2-15查得雙層鋼窗有效面積系數(shù)Ca=0.75,所以窗的有效面積Aw=12X4.2X0.75=37.8mz.再由附錄2-13查得遮擋系數(shù)Cs=0.74,由附錄2-14查得遮陽系數(shù)Ci=0.5,所以綜合遮陽系數(shù)Cc.s=0.74X0.5=0.37時間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.人員散熱引起的冷負荷賓館屬于極輕勞動，查表2-13，當室溫為26度，每人散發(fā)的潛熱和顯熱量分別為86W和48W。由表2-12查得賓館旅店群集系數(shù)3=0.93.再由附錄2-23查得人體顯熱散熱冷負荷系數(shù)逐時值。按式（2-22）計算人體顯熱散熱逐時冷負荷。計算結(jié)果如下表。時間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合計1023.001067.641098.891121.211139.061152.46951.58915.86893.54880.15866.76857.83844.44835.51.照明散熱形成的冷負荷由于明裝熒光燈，鎮(zhèn)流器裝設(shè)在客房內(nèi)，所以鎮(zhèn)流器消耗功率系數(shù)n1取1,燈罩隔熱系數(shù)n2取0.6。由附錄2-22查得照明散熱冷負荷系數(shù)，按公式（2-21）計算，計算結(jié)果如下表。7.將上述各表計算結(jié)果列如下表，并逐時相加，求得客房內(nèi)冷負荷值。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間墻墻窗荷射荷負負計內(nèi)外外負日員荷光捺北西南熱窗負人燈總8.冷負荷匯總1.賓館一層冷負荷匯總?cè)缦卤硭?:0010:0011:0012:0013:0014:0015:0016:0017:0018:0019:0020:0021:0022:00辦公室1265.711752.742143.152477.492398.771962.921535.861203.87992.07769.49586.16522.59500.32452.92賓館大號3871.304607.095134.575559.865548.945186.094582.334225.323989.433738.113494.922936.872828.062697.55中餐廳7073.407992.048673.969239.309225.098737.688001.897541.467229.336892.056563.745961.135825.585662.04餐廳大冷2242.362727.853137.553487.373485.593188.092736.592448.032251.422029.791818.671679.261612.701526.78總計15538.0917562.4119553.3121212.1321095.8519504.2617286.1615850.8214899.7313877.5612927.5611579.8811257.3310840.62由上表可看出賓館最大冷負荷值出現(xiàn)在12:00,其值為21212.13W。算例2（以賓館二層小包廂201為算例）1.北外墻冷負荷由《供暖通風(fēng)與空氣調(diào)節(jié)設(shè)計規(guī)范》續(xù)表H.0.1—3查得冷負荷計算溫度逐時值，即可按課本公式2-7：Qc（t）=AK（t.c（t）-t.R）算出西外墻逐時冷負荷，計算結(jié)果如下表。時間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.北外窗瞬時傳熱冷負荷根據(jù)ai=8.7W/(m2^K)>ao=3.5+5.6X2.1=15.26W/(m2-K),由附錄2-8查得Kw=2.91W/(m2-K),再由附錄2-9查得玻璃窗傳熱系數(shù)修正值。由附錄2-10查出玻璃窗冷負荷計算溫度tc(t)，根據(jù)暖通空調(diào)式(2-10)計算，計算結(jié)果如下表。時間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北外窗日射得熱引起的冷負荷由《暖通空調(diào)》附錄2-15查得雙層鋼窗有效面積系數(shù)Ca=0.75,所以窗的有效面積Aw=12X4.2X0.75=37.8mz. 再由附錄2-13查得遮擋系數(shù)Cs=0.78,由附錄2-14查得遮陽系數(shù)Ci=0.5,所以綜合遮陽系數(shù)Cc.s=0.78X0.5=0.39時間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西內(nèi)墻和南內(nèi)墻冷負荷通過空調(diào)房間隔墻、樓板、內(nèi)窗等內(nèi)圍護結(jié)構(gòu)的溫差傳熱而產(chǎn)生的冷負荷，可視為不隨時間變化的穩(wěn)定傳熱，按下式計算Q(t)=KA(To.m+ATa-Tr)西內(nèi)墻Q(t)=0.8X7.6X3.9X(32.4+2-26)=139.9南內(nèi)墻Q(t)=0.8X4X3.9X(32.4+2-26)=73.6.人員散熱引起的冷負荷賓館屬于極輕勞動，查表2-13，當室溫為26度，每人散發(fā)的潛熱和顯熱量分別為86W和48W。由表2-12查得賓館旅店群集系數(shù)甲=0.93.再由附錄2-23查得人體顯熱散熱冷負荷系數(shù)逐時值。按式(2-22)計算人體顯熱散熱逐時冷負荷。計算結(jié)果如下表。時間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合計1023.001067.641098.891121.211139.061152.46951.58915.86893.54880.15866.76857.83844.44835.51.照明散熱形成的冷負荷由于明裝熒光燈，鎮(zhèn)流器裝設(shè)在客房內(nèi)，所以鎮(zhèn)流器消耗功率系數(shù)n1取1,燈罩隔熱系數(shù)n2取0.6。由附錄2-22查得照明散熱冷負荷系數(shù)，按公式(2-21)計算，計算結(jié)果如下表。.將上述各表計算結(jié)果列如下表，并逐時相加，求得客房內(nèi)冷負荷值。更多暖通畢業(yè)設(shè)計圖紙、計算書、參考資料：/item.htm?id=550576768629畢業(yè)設(shè)計代做：/item.htm?id=550576768629墻堵墻荷窗荷射荷負負內(nèi)內(nèi)外外負日員有光荷西南北負北熱窗負人燈9:00墻堵墻荷窗荷射荷負負內(nèi)內(nèi)外外負日員有光荷西南北負北熱窗負人燈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.冷負荷匯總賓館二層冷負荷匯總?cè)缦卤硭?:0010:0011:0012:0013:0014:0015:0016:0017:0018:0019:0020:0021:0022:00201包廂1454.051521.731569.321602.531626.101639.351430.401382.411360.411353.011272.621245.481226.271211.51202包廂1314.151381.831429.421462.631486.201499.451290.501242.511220.511213.111132.721105.581086.371071.61203包廂1314.151381.831429.421462.631486.201499.451290.