某酒店室內(nèi)供熱管道布置設(shè)計(jì)計(jì)算案例1.1供熱管網(wǎng)布置供熱管道從地下一層換熱站的分水器出發(fā)，進(jìn)入南面、北面的水暖井，立管通過(guò)水暖井輸送至各層的分、集水器，通過(guò)分、集水器將水分別供給各暖用戶房間的地暖分集水器，詳見(jiàn)平面圖。1.2地面輻射采暖1.2.1地面輻射溫度地面溫度是影響人體的舒適感的重要因素，根據(jù)《實(shí)用空調(diào)供熱設(shè)計(jì)手冊(cè)》要求見(jiàn)表4-1。表4-1地表面溫度的限值（℃）依據(jù)條件經(jīng)常停留區(qū)短期停留區(qū)無(wú)人停留區(qū)GB50019-2003適宜范圍24~2628~3035~40最高限值283242本設(shè)計(jì)應(yīng)滿足適宜范圍，不應(yīng)超過(guò)最高限值。1.2.2換熱管的選取根據(jù)《實(shí)用空調(diào)供熱設(shè)計(jì)手冊(cè)》中管道性能的綜合比較表，依據(jù)加工性能、價(jià)格和衛(wèi)生性能，本設(shè)計(jì)選用PE-X管。并且，國(guó)際上普遍認(rèn)為PE-X和PE-RT是最適宜輻射供熱及供冷的加熱管管材。PE-X具有優(yōu)良的耐溫性能，使用為-70℃～110℃；優(yōu)良的隔熱性能，\t"/item/%E4%BA%A4%E8%81%94%E8%81%9A%E4%B9%99%E7%83%AF%28PE-X%29%E7%AE%A1/_blank"導(dǎo)熱系數(shù)低；較長(zhǎng)的使用壽命，可安全使用50年以上；抗化學(xué)耐腐蝕性能。良好的環(huán)保性能，不能回收；良好的恢復(fù)形狀記憶性能；抗振動(dòng)，耐沖擊；水力特性優(yōu)良。1.2.3換熱管布置形式換熱管的布置形式有三種如圖4-1、分別是（a）平行排管式、（b）蛇形排管式和（c）螺旋形盤管式。平行排管式的板面溫度有很大的不均勻性，但其易于布置，適合各種樣式地面；蛇形排管式大部分板面溫度較均勻，但在局部區(qū)域有較大的不均勻性，并且大半數(shù)目的彎頭曲率半徑較小，施工不便；螺旋形盤管式板面溫度也不均勻，但是他的彎頭曲率半徑只有兩個(gè)，施工方便。根據(jù)以上三種盤管的特點(diǎn)，本設(shè)計(jì)主要采用螺旋形盤管式，部分不宜布置該方式的選用平行排管式。圖4-1換熱管布置形式1.2.4換熱管敷設(shè)計(jì)算（1）實(shí)際熱負(fù)荷地面輻射采暖是輻射傳熱和對(duì)流傳熱交織在一起，建筑耗熱量在使用對(duì)流傳熱方法計(jì)算時(shí)需要乘以一個(gè)修正系數(shù)來(lái)得出地面輻射采暖的實(shí)際熱負(fù)荷：(5-1)式中：供熱量組成地面輻射采暖的供熱量是房間地面向上傳熱量和其上層房間地面向下的傳熱量：(5-2)式中：換熱管敷設(shè)面積的確定選擇合適的換熱間距，依據(jù)向上供熱量和向下供熱量及家具遮擋系數(shù)，大致算出合適的換熱管敷設(shè)面積，二十一層僅存在向上散熱量。換熱管間距所對(duì)應(yīng)的換熱量如表4-2所示。衛(wèi)生間由于地面面積較小、有排水地漏的影響到時(shí)換熱管布置不下，需輔助供暖期如浴霸等。表4-2單位地面面積的向上供熱量和向下傳熱量（W/m2）平均水溫（℃）室內(nèi)空氣溫度（℃）換熱管間距（mm）500400300200100向上傳熱量向下傳熱量向上傳熱量向下傳熱量向上傳熱量向下傳熱量向上傳熱量向下傳熱量向上傳熱量向下傳熱量351664.418.472.618.881.819.491.420.0100.721.01857.716.761.017.073.217.481.718.189.919.02051.014.957.411.264.611.616.92244.313.149.913.356.013.762.514.268.714.92437.711.342.411.547.611.953.012.2供熱房間盤管敷設(shè)面積計(jì)算實(shí)例以116房間為例，計(jì)算該房間盤管敷設(shè)面積。（1）實(shí)際熱負(fù)荷臥室衛(wèi)生間客廳（2）本設(shè)計(jì)房間臥室及客廳溫度為20℃、衛(wèi)生間溫度25℃，家具遮擋系數(shù)1.27，換熱管間距200mm，該間距向上散熱量為72.1W/m2，其上部房間換熱管間距為300mm。則向下傳熱量為15.6W/m2。則臥室敷設(shè)面積衛(wèi)生間敷設(shè)面積客廳敷設(shè)面積其余供熱房間盤管敷設(shè)面積見(jiàn)附錄2。附錄1：地?zé)岜P管敷設(shè)面積計(jì)算表一層盤管敷設(shè)面積房間編號(hào)房間名稱房間輻射采暖熱負(fù)荷家具遮擋系數(shù)計(jì)算系數(shù)管道間距向上散熱量向下散熱量敷設(shè)面積101次臥7471.2712006主臥8131.2712001客廳9021.2712009衛(wèi)生間4641.27110079.316.96.13廚房2751.2712006102臥室6661.2712009客廳7221.2712000103客房9151.2712008104客房9151.2712008105臥室6661.2712009客廳7221.2712000106次臥7471.2712006主臥8131.2712001客廳9021.2712009衛(wèi)生間4641.27110079.316.96.13廚房2751.2712006107臥室9971.27120072.115.614.44衛(wèi)生間5151.2712006客廳9651.27120072.115.613.97108客房9121.2712003109客房9091.2712009110客房9091.2712009111客房9091.2712009112客房9091.2712009113客房9091.2712009114客房9091.2712009115客房9141.2712006116臥室10301.27120072.115.614.92衛(wèi)生間5351.2712005客廳8991.27120072.115.613.02117臥室9501.27120075.716.513.09客廳7261.27130064.615.611.50二~七層盤管敷設(shè)面積房間編號(hào)房間名稱房間輻射采暖熱負(fù)荷家具遮擋系數(shù)計(jì)算系數(shù)管道間距向上散熱量向下散熱量敷設(shè)面積201次臥5041.2712006主臥5431.2712002客廳5501.27130064.615.68.71衛(wèi)生間2841.27110079.316.93.75廚房1621.2712003202臥室4391.2712002客廳4971.2712006203客房5831.2712009204客房5831.2712009205客房5831.2712009206客房5831.2712009207臥室4501.2712008客廳4511.2712009208次臥5041.2712006主臥5431.2712002客廳5501.27130064.615.68.71衛(wèi)生間2841.27110079.316.93.75廚房1621.2712003209臥室5091.2712003客廳4611.27130064.615.67.30210臥室6131.27130064.615.69.71衛(wèi)生間3181.2712008客廳5611.27130064.615.68.88211客房5191.2712007212客房5191.2712007213客房5191.2712007214客房5191.2712007215客房5191.2712007216客房5191.2712007217客房5191.2712007218客房5191.2712007219臥室6181.27130064.615.69.79衛(wèi)生間3151.2712004客廳6291.27130064.615.69.96220臥室5481.2712009客廳5111.27130064.615.68.09八~二十層盤管敷設(shè)面積房間編號(hào)房間名稱房間輻射采暖熱負(fù)荷家具遮擋系數(shù)計(jì)算系數(shù)管道間距向上散熱量向下散熱量敷設(shè)面積801次臥4241.27130064.615.66.71主臥4461.27130064.615.67.06客廳3971.27130064.615.66.29衛(wèi)生間2141.27110079.316.92.83廚房1171.2712008802臥室3091.27130064.615.64.89客廳3521.27130064.615.65.57803客房4411.27130064.615.66.98804客房4411.27130064.615.66.98805客房4411.27130064.615.66.98806客房4411.27130064.615.66.98807臥室3141.2712002客廳3301.2712005808次臥4131.2712005主臥4461.2712002客廳3971.27130064.615.66.29衛(wèi)生間2041.27110079.316.92.69廚房1091.2712007809臥室4291.27130064.615.66.79客廳3631.27130064.615.65.75810臥室5151.27130064.615.68.16衛(wèi)生間2421.2712008客廳4391.27130064.615.66.95811客房4131.27130064.615.66.54812客房4131.27130064.615.66.54813客房4131.27130064.615.66.54814客房4131.27130064.615.66.54815客房4131.27130064.615.66.54816客房4131.27130064.615.66.54817客房4131.27130064.615.66.54818客房4131.27130064.615.66.54818臥室5281.27130064.615.68.36衛(wèi)生間2381.2712003客廳4901.27130064.615.67.76820臥室4501.2712008客廳3891.27130064.615.66.16二十一層盤管敷設(shè)面積房間編號(hào)房間名稱房間輻射采暖熱負(fù)荷家具遮擋系數(shù)計(jì)算系數(shù)管道間距向上散熱量向下散熱量敷設(shè)面積201次臥5041.27120072.108.88主臥5431.27120072.109.56客廳5501.27130064.6010.81衛(wèi)生間2841.27110079.304.55廚房1621.27120072.102.85202臥室4391.27120072.107.73客廳4971.27120072.108.75203客房5831.27120072.1010.27204客房5831.27120072.1010.27205客房5831.27120072.1010.27206客房5831.27120072.1010.27207臥室4501.27120072.107.93客廳4511.27120072.107.94208次臥5041.27120072.108.88主臥5431.27120072.109.56客廳5501.27130064.6010.81衛(wèi)生間2841.27110079.304.55廚房1621.27120072.102.85209臥室5091.27120072.108.97客廳4611.27130064.609.06210臥室6131.27120072.1010.80衛(wèi)生間3181.27120072.105.60客廳5611.27130064.6011.03211客房5191.27120072.109.14212客房5191.27120072.109.14213客房5191.27120072.109.14214客房