【商場空調(diào)系統(tǒng)的送風(fēng)量與氣流組織計算案例綜述1100字】

商場空調(diào)系統(tǒng)的送風(fēng)量與氣流組織計算案例綜述1送風(fēng)量計算 圖4-1空氣處理過程以1001商鋪為例進(jìn)行設(shè)計計算。1.確定N點(diǎn)，hN=88.7kJ/kg，dN=21.1g/kg2.確定送風(fēng)點(diǎn)O根據(jù)溫差?t，就能得到送風(fēng)點(diǎn)O，tO=28℃，hO=843．送風(fēng)量G=Q其他房間亦如上計算，見表4-1：表4-1各風(fēng)量計算表房間號總冷負(fù)荷（W）新風(fēng)量(m3/h)室內(nèi)濕負(fù)荷（kg/h）送風(fēng)量（m3/h）送風(fēng)量（m3/s）回風(fēng)量（m3/h）10014414.88201.62.9920.6310.256719.03110022528.4949.990.95766.9090.213716.91910032570.7855.540.94742.440.206686.910047873.46345.64.971673.570.4711327.9710057918.61345.64.971714.310.4761368.7110067873.46345.64.971673.570.4711327.9710077873.46345.64.971673.570.4711327.9710087918.61345.64.971714.310.4761368.7110097873.46345.64.971673.570.4711327.9710102528.4955.540.94742.440.206686.910112570.7849.990.95766.9090.213716.91910124414.88201.62.9920.6310.256719.03110134623.67501.471393.850.0141343.8510148949.74345.64.972113.790.5871768.1910157918.61345.64.971714.310.4761368.7110167873.46345.64.971673.570.4711327.9710178949.74345.64.972113.790.5871768.1910187918.61345.64.971714.310.4761368.7110198949.74345.64.972113.790.5871768.1910204623.670501.471393.850.0141343.851層小計126166.624861.4672.1629214.127.397824352.662風(fēng)機(jī)盤管選型使用開利系列風(fēng)機(jī)盤管機(jī)組，根據(jù)每個房間的回風(fēng)量和冷負(fù)荷選擇合適的風(fēng)機(jī)盤管，以1001為例，房間的回風(fēng)量為719.031m3/h，冷負(fù)荷為4414.88W，故選擇型號為42CE006200A的風(fēng)機(jī)盤管，風(fēng)量（中速）為820m3/h，制冷量（中速）為4654.7W，其他房間選型見表4-2：表4-2各房間風(fēng)機(jī)盤管選型房間號風(fēng)機(jī)盤管型號風(fēng)機(jī)盤管風(fēng)量m3/h臺數(shù)100142CE006200A1392.491100442CE012200A663.9852100542CE012200A684.3552100642CE012200A663.9852100742CE012200A663.9852100842CE012200A684.3552100942CE012200A663.9852續(xù)表101242CE010200A1392.492101342CE006200A671.9252101442CE012200A884.0952101542CE012200A684.3552101642CE012200A663.9852101742CE012200A884.0952101842CE012200A684.3552101942CE012200A884.0952102042CE006200A671.92523氣流組織計算新風(fēng)進(jìn)入室內(nèi)的地方應(yīng)該裝設(shè)合適的風(fēng)閥。面積應(yīng)該達(dá)到新風(fēng)量隨各個季節(jié)的不同的最大風(fēng)量要求。以1001商鋪為例，空調(diào)房間30.24m2，凈高3.6m，單個房間的送風(fēng)量為0.256m3/s。散流器類型選用方形散流器，每一個散流器的送風(fēng)范圍為9m2（3m×3m），該房間內(nèi)安放2個。首先選擇散流器，計算散流器出口風(fēng)速。散流器的尺寸為300mm×300mm，出口風(fēng)速按不大于5m/s選擇：v實(shí)際上散流器的出口面積大約是原尺寸的90％，所以出口的實(shí)際風(fēng)速為vs=3×0.9=2.7m/s。2.因?yàn)楣ぷ鲄^(qū)風(fēng)速應(yīng)≤0.3m/s，所以計算當(dāng)某處風(fēng)速為0.3m/s時該點(diǎn)與風(fēng)口的距離。x=3.可按以下公式計算出房間內(nèi)風(fēng)速的平均值：v符合室內(nèi)風(fēng)速要求。設(shè)計結(jié)果：不影響人們對室內(nèi)環(huán)境的觀感，本設(shè)計中各個房間送風(fēng)口設(shè)計見表4-3：表4-3各個房間送風(fēng)口設(shè)計房間號室內(nèi)面積(m2)送風(fēng)口室內(nèi)平均風(fēng)速（m/s）送風(fēng)口尺寸㎡送風(fēng)口面積㎡頸部風(fēng)速m/s散流器實(shí)際出風(fēng)口面積㎡散流器實(shí)際出風(fēng)口風(fēng)速m/s射流末端速度為0.5m/s的射程m100130.24300×3000.093.0000.0812.72.0820.169100230.24250×2500.06253.5000.056253.152.0220.164100333.6250×2500.06253.5000.056253.152.0220.164100451.84400×4000.163.0000.1442.72.7990.237100551.84400×4000.163.0000.1442.72.7990.237100651.84400×4000.163.0000.1442.72.7990.237100751.84400×4000.163.0000.1442.72.7990.237100851.84400×4000.163.0000.1442.72.7990.237100951.84400×4000.163.0000.1442.72.7990.237101033.6250×2500.06253.5000.056253.152.0220.164101130.24250×2500.06253.5000.056253.152.0220.164101230.24300×3000.093.0000.0812.72.0820.169101351.84360×3600.12963.0000.116642.72.5120.213101451.84400×4000.164.0000.1443.63.7550.318101551.84400×4000.163.0000.1442.72.7990.237101651.84400×4000.163.0000.1442.72.7990.237101751.84400×4000.164.0000.144