【商场空调系统的送风量与气流组织计算案例综述1100字】

商场空调系统的送风量与气流组织计算案例综述1送风量计算 图4-1空气处理过程以1001商铺为例进行设计计算。1.确定N点，hN=88.7kJ/kg，dN=21.1g/kg2.确定送风点O根据温差∆t，就能得到送风点O，tO=28℃，hO=843．送风量G=Q其他房间亦如上计算，见表4-1：表4-1各风量计算表房间号总冷负荷（W）新风量(m3/h)室内湿负荷（kg/h）送风量（m3/h）送风量（m3/s）回风量（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层小计126166.624861.4672.1629214.127.397824352.662风机盘管选型使用开利系列风机盘管机组，根据每个房间的回风量和冷负荷选择合适的风机盘管，以1001为例，房间的回风量为719.031m3/h，冷负荷为4414.88W，故选择型号为42CE006200A的风机盘管，风量（中速）为820m3/h，制冷量（中速）为4654.7W，其他房间选型见表4-2：表4-2各房间风机盘管选型房间号风机盘管型号风机盘管风量m³/h台数100142CE006200A1392.491100442CE012200A663.9852100542CE012200A684.3552100642CE012200A663.9852100742CE012200A663.9852100842CE012200A684.3552100942CE012200A663.9852续表101242CE010200A1392.492101342CE006200A671.9252101442CE012200A884.0952101542CE012200A684.3552101642CE012200A663.9852101742CE012200A884.0952101842CE012200A684.3552101942CE012200A884.0952102042CE006200A671.92523气流组织计算新风进入室内的地方应该装设合适的风阀。面积应该达到新风量随各个季节的不同的最大风量要求。以1001商铺为例，空调房间30.24m2，净高3.6m，单个房间的送风量为0.256m3/s。散流器类型选用方形散流器，每一个散流器的送风范围为9m2（3m×3m），该房间内安放2个。首先选择散流器，计算散流器出口风速。散流器的尺寸为300mm×300mm，出口风速按不大于5m/s选择：v实际上散流器的出口面积大约是原尺寸的90％，所以出口的实际风速为vs=3×0.9=2.7m/s。2.因为工作区风速应≤0.3m/s，所以计算当某处风速为0.3m/s时该点与风口的距离。x=3.可按以下公式计算出房间内风速的平均值：v符合室内风速要求。设计结果：不影响人们对室内环境的观感，本设计中各个房间送风口设计见表4-3：表4-3各个房间送风口设计房间号室内面积(m2)送风口室内平均风速（m/s）送风口尺寸㎡送风口面积㎡颈部风速m/s散流器实际出风口面积㎡散流器实际出风口风速m/s射流末端速度为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