西安市新悦大酒店中央空调毕业设计说明书_secret

'西安市新悦大酒店空调工程设计一、原始资料（1）建筑概况该建筑物位于西安市，主要功能为大酒店，有商铺、餐厅、标准间、会议室及办公室等功能间。该建筑物位于北纬34度18分，东经108度56分。（2）气象参数室外计算参数年平均温度：13.3℃；夏季室外计算温度：35.2℃；夏季空调室外计算湿球温度：26.0℃；冬季室外计算温度：-8；室外风速：冬季平均，1.8m/s;夏季平均，2.2m/s;全年主导风向：东北风，频率：14%；最大冻土深度：45cm。室内计算参数室内温度/℃相对湿度/℅新风量/m3/(h·人)夏冬夏冬商铺261865—5550—4020办公室261865—5550—4030餐厅241865—5550—4030雅间241865—55`50—4030标准间261865—5050—4030会议室261865—5050—4030（3）土建资料外墙与屋顶的选择1、防结露外墙与屋顶的选择按下式确定的最小传热热阻Romin（m²ºC/W）（1-1）式中——围护结构的最小传热阻（m2oc/w）;tn---冬季室内计算温度(℃)；tw---冬季围护结构室外计算温度(℃)；n---围护结构温差修正系数（本设计取1.0）；Rn---内表面换热热阻，（取0.11m2oc/m)；△t---室内空气与围护结构内表面之间的允许温度，外墙取7.0ºC，屋顶取5.5ºC。2、建筑节能传热系数屋面≤0.55W/(m2•K)外墙≤0.60W/(m2•K)内墙、屋顶与窗的选择表1-1围护结构的地点修正值ｔd城市SWNE水平西安0.50.91.80.90.4玻璃窗的地点修正值ｔd（ºC）为2ºC。照明与人员密度的确定人员数的确定是根据各房间的使用功能及使用单位提出的要求确定的。 照明由建筑电气专业提供，照明设备为明装荧光灯，镇流器设置空调房间内，利用自然通风散热于顶棚内。各类型房间标准如下所示表1-2人员与照明房间类型照明（W/m2）人员密度（人/m2）商铺20-400.2-0.7办公室20-550.14餐厅500.5-1.2雅间500.5-1.2会议室20-550.2-0.5标准间202人一、空调负荷计算2.1夏季冷负荷冷负荷计算是空调设计及合理选用空调设备的主要依据。从性质上来看，空调冷负荷可分为围护结构冷负荷和室内冷负荷。本设计中利用冷负荷系数法计算空调冷负荷。2.1.1外墙和屋面瞬变传热引起的冷负荷Qc(τ)=AK[(tc(τ)+td)kαkρ-tR]式中Qc(τ)—外墙和屋面瞬变传热引起的逐时冷负荷，W；A—外墙和屋面的面积，m2；K—外墙和屋面的传热系数，W/(m2·℃)，由《暖通空调》附录2-2和附录2-3查取；tR—室内计算温度，℃；tc(τ)—外墙和屋面冷负荷计算温度的逐时值，℃，由《暖通空调》附录2-4和附录2-5查取；td—地点修正值，由《暖通空调》附录2-6查取；kα—吸收系数修正值，取kα=1.0；kρ—外表面换热系数修正值，取kρ=0.9；2.1.2内围护结构冷负荷Qc(τ)=AiKi(to.m+Δtα-tR)式中ki—内围护结构传热系数，W/(m2·℃)；Ai—内围护结构的面积，m2；to.m—夏季空调室外计算日平均温度，℃；Δtα—附加温升，可按《暖通空调》表2-10查取。2.1.3外玻璃窗瞬变传热引起的冷负荷Qc(τ)=cwKwAw(tc(τ)+td—tR)式中Qc(τ)—外玻璃窗瞬变传热引起的冷负荷，W； Kw—外玻璃窗传热系数，W/(m2·℃)，由《暖通空调》附录2-7和附录2-8查得；Aw—窗口面积，m2；tc(τ)—外玻璃窗的冷负荷温度的逐时值，℃，由《暖通空调》附录2-10查得；cw—玻璃窗传热系数的修正值；由《暖通空调》附录2-9查得；td—地点修正值，由《暖通空调》附录2-11查得。2.1.4透过玻璃窗的日射得热一起的冷负荷Qc(τ)=CαAwCsCiDjmaxCLQQc(τ)=CαAwCsCiDjmaxCLQ式中Cα—有效面积系数，由《暖通空调》附录2-15查得；Aw—窗口面积，m2；Cs—窗玻璃的遮阳系数，由《暖通空调》附录2-13查得；Ci—窗内遮阳设施的遮阳系数，由《暖通空调》附录2-14查得；Djmax—日射得热因数，由《暖通空调》附录2-12查得；CLQ—窗玻璃冷负荷系数，无因次，由《暖通空调》附录2-16至附录2-19查得。2.1.5照明散热形成的冷负荷白炽灯Qc(τ)=1000NCLQ日光灯Qc(τ)=1000n1n2NCLQ式中N—照明灯具所需功率，W；n1—镇流器消耗功率稀疏，明装时，n1=1.2，暗装时，n1=1.0；n2—灯罩隔热系数，灯罩有通风孔时，n2=0.5—0.6；无通风孔时，n2=0.6—0.8；CLQ—照明散热冷负荷系数，由《暖通空调》附录2-22查得。2.1.6人体散热形成的冷负荷1、人体显热散热形成的冷负荷Qc(τ)=qsnφCLQ式中qs—不同室温和劳动性质成年男子显热散热量，W，由《暖通空调》表2-13查得；n—室内全部人数；φ—群集系数，由《暖通空调》表2-12查得； CLQ—人体显热散热冷负荷系数，由《暖通空调》附录2-23查得；2、人体潜热散热引起的冷负荷Qc(τ)=qlnφ式中ql—不同室温和劳动性质成年男子潜热散热量，W，由《暖通空调》表2-13查得；n，φ—同式3-6-1。下面以801为例计算冷负荷：屋顶冷负荷时间间间08:0009:0010:0011:0012:0013:0014:0015:0016:0017:0018:00tc(τ)38.137.036.135.635.636.037.038.440.141.943.7td0.40.40.40.40.40.40.40.40.40.40.4kα1.041.041.041.041.041.041.041.041.041.041.04kρ1.01.01.01.01.01.01.01.01.01.01.0t"c(τ)40.0438.9037.9637.4437.4437.8638.9040.3542.1243.9945.86tR2626262626262626262626K0.530.530.530.530.530.530.530.530.530.530.53A24.38424.38424.38424.38424.38424.38424.38424.38424.38424.38424.384Qc(τ)181.45166.66154.57147.85147.85153.22166.66185.48208.33232.52256.71南外墙冷负荷时间08:0009:0010:0011:0012:0013:0014:0015:0016:0017:0018:00tc(τ)33.231.530.930.530.430.631.332.333.534.936.3td0.5kα1.041.041.041.041.041.041.041.041.041.041.04kρ1.01.01.01.01.01.01.01.01.01.01.0t"c(τ)35.0533.2832.6632.2432.1432.3433.0734.1135.3636.8238.27tR2626262626262626262626∆t9.057.286.666.246.146.347.078.119.3610.8212.27K0.560.560.560.560.560.560.560.560.560.560.56A6.566.566.566.566.566.566.566.566.566.566.56Qc(τ)33.2426.7424.4522.9222.5423.3125.9829.8034.3839.7345.08东外墙冷负荷时间08:0009:0010:0011:0012:0013:0014:0015:0016:0017:0018:00tc(τ)32.532.132.132.834.135.637.238.539.540.240.5td0.90.90.90.90.90.90.90.90.90.90.9kα1.041.041.041.041.041.041.041.041.041.041.04kρ1.01.01.01.01.01.01.01.01.01.01.0t"c(τ)34.7434.3234.3235.0536.4037.9639.6240.9842.0242.7443.06tR2626262626262626262626K0.560.560.560.560.560.560.560.560.560.560.56A25.1125.1125.1125.1125.1125.1125.1125.1125.1125.1125.11Qc(τ)122.84116.99116.99127.23146.24168.18191.58210.59225.21235.45239.83南外窗瞬时传热冷负荷 时间08:0009:0010:0011:0012:0013:0014:0015:0016:0017:0018:00tc(τ)26.927.929.029.930.831.531.932.232.232.031.6td22222222222tR2626262626262626262626K3.5163.5163.5163.5163.5163.5163.5163.5163.5163.5163.516A3.363.363.363.363.363.363.363.363.363.363.36Qc(τ)34.2646.0759.0769.7080.3388.6093.3396.8796.8794.5189.78南外窗日射得热冷负荷时间08:0009:0010:0011:0012:0013:0014:0015:0016:0017:0018:00CLQ0.260.400.580.720.840.800.620.450.320.240.16Djmax251251251251251251251251251251251Cc，s0.390.390.390.390.390.390.390.390.390.390.39Aw2.522.522.522.522.522.522.522.522.522.522.52Qc(τ)64.1498.67143.08177.61207.21197.35152.94111.0178.9459.2039.47照明散热形成的冷负荷时间08:0009:0010:0011:0012:0013:0014:0015:0016:0017:0018:00CLQ0.710.740.760.790.810.830.840.860.870.290.26n11.21.21.21.21.21.21.21.21.21.21.2n20.60.60.60.60.60.60.60.60.60.60.6N200200200200200200200200200200200Qc(τ)102.24106.56109.44113.76116.64119.52120.96123.84125.2841.7637.44人员散热引起的冷负荷qsnφCLQmaxQc(τ)qlQc总60.520.930.89100.1573.3136.34236.49各分项逐时冷负荷汇总表时间08:0009:0010:0011:0012:0013:0014:0015:0016:0017:0018:00屋顶181.45166.66154.57147.85147.85153.22166.66185.48208.33232.52256.71南外墙33.2426.7424.4522.9222.5423.3125.9829.8034.3839.7345.08东外墙122.84116.99116.99127.23146.24168.18191.58210.59225.21235.45239.83窗传热34.2646.0759.0769.7080.3388.6093.3396.8796.8794.5189.78窗日射64.1498.67143.08177.61207.21197.35152.94111.0178.9459.2039.47人员236.49236.49236.49236.49236.49236.49236.49236.49236.49236.49236.49照明102.24106.56109.44113.76116.64119.52120.96123.84125.2841.7637.44总计774.65798.19844.08895.56957.30986.66987.94994.071005.50939.66944.81由表格可知：801房间的最大冷负荷为1005W，出现在下午四时。其余房间的冷负荷汇总见附录一。2.2冬季热负荷建筑物采暖设计的热负荷在《采暖通风与空气调节规范》中明确规定应当根据建筑物散失和获得的热量确定。冬季热负荷包括围护结构的基本耗热量及加热由门窗缝隙渗入室内的冷空气的附加耗热量。在工程实际中，围护结构的基本耗热量按一维稳定传热过程计算.即假设在计算时间内，室内、外空气温度和其他传热过程参数都不随时间变化。2.2.1围护结构基本耗热量：Qj=Aj·Kj·(tR-to.w)·a式中Qj——j部分围护结构的基本耗热量，W；Aj——j部分围护结构的表面积，m2； Kj——j部分围护结构的传热系数，W/(m2·℃)；tR——冬季室内计算温度，℃；to.w——冬季室外空气计算温度，℃；a——围护结构的温差修正系数，见《暖通空调》第13页，表2-4。2.2.2朝向附加耗热量：朝向附加耗热量是考虑建筑物受太阳照射影响而对围护结构基本耗热量的修正。不同朝向的围护结构的修正率见表2－2。表2-2围护结构的修正率项目朝向修正率北、东北、西北朝向0东、西朝向－5％东南、西南朝向－10％～－15％南向－15％～－25％本设计中，北向取0％，东、西朝向取－5％，南向取-15％。2.2.3高度附加耗热量：由于室内温度梯度的影响，往往使房间上部的传热量加大。因此规定：当房间净高超过4米时，每增加1米，附加率为2％，但最大附加率不超过15％。应注意：高度附加率应加在基本耗热量和其他附加耗热量的总和上。在本设计中，由于建筑物的层高均未超过4米。因此高度附加率为零。2.2.4风力附加耗热量：风力附加耗热量是考虑室外风速变化而对维护结构基本耗热量的修正。在计算基本耗热量时，外表面换热系数是对应风速约为4m/s的计算值。我国大部分地区冬季平均风速为2～3m/s。因此《规范》规定，一般情况下，不必考虑风力附加。2.2.5在风力和热压造成的室内外压差作用下，室外的冷空气通过门、窗等缝隙渗入室内，被加热后逸出，此部分耗热量为冷风渗透耗热量。为防止外界环境空气进入空调房间，干扰空调房间内温湿度变化而破坏室内洁净度，需要在空调系统中由一定量的新风来保持房间的正压。由于空调建筑室内通常保持正压，因而在一般情况下，不计算门窗缝隙渗入室内的冷空气和由门，孔洞等侵入室内的冷空气引起的耗热量。以下以801房间为例进行热负荷计算房间编号围护结构传热系数室内外温差温差修正系数朝向修正（℅）耗热量（W）房间热负荷（W）结构名称面积(m2)KjW/(m2℃)tR-to.wm(℃)a801南外墙6.560.56261-1581.19898.09南外窗3.362.93261-15217.57东外墙25.110.56261-5347.32屋顶24.3840.53260.750252.01注：各房间热负荷见附录二2.3房间湿负荷房间的散湿主要是设备与人员散湿。相对于人员散湿，设备的散湿量相对较小故在此只计算人员散湿即可。（餐厅要计算菜肴散湿量）2.3.1人体散湿量 mw1=0.278nφg×10-6式中mw1——人体散湿量，kg/s；g——成年男子的小时散湿量，g/h，见《暖通空调》表2-13；n——室内全部人数；φ——群集系数，见《暖通空调》表2-12；2.3.2菜肴散湿量菜肴散湿量以每人10g/h算，mw2=10n/3600×10-3式中mw2——菜肴散湿量，kg/s；n——室内全部人数；注：各房间湿负荷见附录三三、空调系统方案的确定和风量的计算3.1　空调系统方案的确定本设计是为大酒店的空调设计，该类建筑功能复杂，管理要求高，使用上既有公建设施（如大厅、餐厅、娱乐设施等），又有客房及一些管理用办公室。另外，人员流动性较大，各种人员对使用上的要求也不尽一致。系统的选定应注意档次和安全的要求，空调系统冷、热介质的到达位置来分有：全空气系统、气-水系统和直接蒸发系统，全空气系统，冷、热介质不进入被空调房间而只进入空调机房，被空气调节房间的冷、热量全部由经过处理的冷、热空气负担，被空气调节房间内只有风道存在。此系统的优点是通风换气次数大，人体的舒适性较好。同时，由于只有风道，其检修的工作量极小，也便于施工过程中的修改变动（如房间分隔发生变化）。其缺点是风道占用空间较大，输送空气的能耗相对较高。气-水系统，空气与作为冷、热介质的水同时送进被空气调节房间，空气解决房间的通风换气或提供满足房间最小卫生要求的新风量，水则通过房间内部的小型空气处理设备而承担房间的冷、热负荷。此系统的优缺点与全空气系统相反。由于水的比热较大，输送同样冷、热量至同一地点所需的水管尺寸比风道尺寸小得多，因此占用建筑空间相对较小，也有利于房间内各小型空调设备的独立控制。从能耗来看，输送同样冷、热量的距离相同时，采用水的能耗大约只有采用空气时的1/3。此系统也有一些明显的缺点，由于空气风量通常按最小新风量设计，因此人体对新鲜空气的要求随系统的安装完成后就无法再做最大的调整，因而舒适性受到限制；水管进入房间后，由于施工等方面的原因，容易造成漏水及夏天冷水管滴凝结水的问题，导致检修工作量加大；由于水管、风管交叉进入房间，因此该系统实际占用的建筑空间在某些场合并不一定显出比全空气系统具有的明显优点。此系统的典型例子是目前许多建筑采用的风机盘管加新风系统。直接蒸发式系统，在中央空调系统中，通常是用水为冷、热介质，即用冷水机组先把水制冷（或用热交换器等换热设备先把水加热）后，送至空气处理设备中与空气进行热交换，在此过程中，很显然存在二次交换所带来的热损失，系统运行效率现对会低一些。而直接蒸发系统则利用冷媒直接与空气进行一次交换，其热效率显然高于前者，这将使得输送同样冷（热）量至同一地点时能耗更少一些。当然由于直接蒸发系统在技术上的原因，其作用范围比中央空调系统小得多，因而在局部小范围的使用相对要多一些。综上所述，本设计中一层商铺、二三层大办公室和四层的大餐厅采用低速全空气系统，设备简单，初投资较省，维修方便；考虑到各功能间的运行时间不同，使用功能不同，每层划分一个系统，各自独立操作。对于餐厅由于人员密度比较大，且菜肴的气味与湿负荷比较大，设置机械排风，改善室内的空气品质。 其余的小空间房间才用风机盘加新风系统，这种方式布置灵活，各房间可独立调节室温，房间没人的时候可方便地关掉房间末端（关风机），不影响其他房间，从而比其它系统较节省运转费用，此外房间之间空气互不串通，冷量可由使用者进行一定调节。独立新风系统既提高了该系统的调节和运转的灵活性，且进入风机盘管的供水温度可适当提高，水管的结露现象可得到改善。新风采用分层设置水平式新风系统，处理到室内空气焓值，不承担室内负荷，新风通过新风管道直接送入各空调房间。风机盘管采用二管制，各办公室不单独设排风系统，通过窗户缝隙渗透排风，厕所设排风扇进行排风。风机盘管机组在使用过程中应该注意的几个问题：1）定期清洗滤尘网，以保持空气流动畅通；2）定期清扫换热器上的积灰，以保证它具有良好的传热性能；3）风机盘管制冷时，冷水进口温度一般采用7-10℃，不能低于5℃，以防止管道及空调器表面结露；4）当噪声级很高时，可以在机组出口和房间送风口之间的风道内做消声处理3.2空调水系统的确定3.2.1冷冻水系统的确定空调水系统包括冷水系统和冷却水系统两个部分，它们有不同类型可供选择。冷冻水系统可以分为开式与闭式，同程式与异程式，双管制、三管制与四管制，单式泵与复式泵，定流量与变流量。以下将介绍各种类型的特点：（1）开式与闭式；开式水系统与蓄热水槽连接比较简单，但水中含氧量高，管路和设备易腐蚀，且为了克服系统静水压头，水泵耗电量大，仅适用于利用蓄热槽的低层水系统。闭式冷水系统的管道与设备不易腐蚀，循环水不易污染。不需要提升高度的静水压力，循环水泵的压力低，从而水泵的功率小，仅需克服循环阻力。只须做好循环水泵的定压和及时向系统内补水。水泵耗电较小。（2）同程式与异程式；同程式水系统除了供回水管路外，还有一根同程管，由于各并联环路的总长度基本相等，水量分配，调度方便，便于水力平衡。需设回程管，管道长度增加，初投资稍高。异程式水系统供回水干管中的水流方向相反；经过每一管路的长度不相等，管路系统简单，初投资省，水量分配，调度较难，水力平衡较麻烦。（3）双管制、三管制与四管制；双管制供热、供冷合用同一管路系统，管路系统简单，初投资省，无法同时满足供热、供冷的要求。三管制分别设置供冷、供热管路与换热器，但冷热回水的管路共用能同时满足供冷、供热的要求，管路系统较四管制简单有冷热混合损失，投资高于两管制，管路系统布置较简单。四管制供冷、供热的供、回水管均分开设置，具有冷、热两套独立的系统，能灵活实现同时供冷或供热，没有冷、热混合损失管路系统复杂，初投资高，占用建筑空间较多。（4）单式泵与复式泵单式泵冷、热源侧与负荷侧合用一组循环水泵，系统简单，初投资省，不能调节水泵流量，难以节省输送能耗，不能适应供水分区压降较悬殊的情况。复式泵冷、热源侧与负荷侧分别配备循环水泵，可以实现水泵变流量，能节省输送能耗，能适应供水分区不同压降，系统总压力低，系统复杂，初投资高。（5）定流量与变流量 定流量水系统中的循环水量保持定值，负荷变化时，可通过改变风量或者改变供回水温度进行调节，系统简单，调节方便，不需要复杂的自控设备，缺点是水流量不变，输送始终为设计最大值。变流量水系统中供回水温度保持定值，负荷变化时，通过改变供水量来调节。输送能耗随负荷减少而降低，水泵容量和电耗少，系统需配备一定自控设备。根据以上各系统的特征及优缺点，结合本楼情况，本设计空调水系统选择闭式、竖直同程、水平异程式、双管制、单级泵系统，这样布置的优点是过渡季节只供给新风，不使用风机盘管的时候便于系统的调节，节约能源，本设计可以采用双管制供应冷冻水，且具有结构简单，初期投资小等特点。同时考虑到节能与管道内清洁等问题，可以采用闭式系统，不与大气相接触，仅在系统最高点设置膨胀水箱，管路不易产生污垢和腐蚀，不需要克服系统静水压头，水泵耗电较小。由于设计属于多层建筑，因此可以采用水平异程，竖直同程式水系统，此系统的立管除了供回水管路外，还有一根同程管，由于各并联环路的管路总长度基本相同，各用户盘管的水阻力大致相等，所以系统的水力稳定性好，流量分配均匀，且此系统属于垂直同程系统。3.2.2冷却水系统的确定冷水机组的冷凝器散热，需要依靠冷却水进行冷却。空调的冷却水系统有直流式冷却水系统、混合式冷却水系统和循环式冷却水系统，冷却水量非常大，考虑到节约能量和水资源，且降低运行费用，循环式冷却水系统是非常经济合理的，在目前的实际工程中得到了广泛的应用，尤其是机械通风冷却塔循环系统。本设计才用循环式冷却水系统，其系统形式为共用供、回水管的冷却水循环系统，冷却塔和冷水机组设置相同的台数，共用供、回水干管，冷却塔设在建筑物的屋顶上，空调冷冻机组设在建筑物的地下室，水从冷却塔的集水槽出来后，直接进入冷水机组而不设水箱。由于空调冷却水系统只在夏季使用，这种系统非常合理，运行管理方便可以减小循环水泵的扬程，节省运行费用。3.3空气处理过程3.3.1全空气系统以102房间2为例进行计算夏季已知：室内设计参数tn=26℃,相对湿度为60%；冷负荷Q=11077W，湿负荷W=1.410g/s；室外设计参数tw=35.2℃,tsw=26℃。CWNε90%S①计算热湿比ε=Q/W=11077/1.410=7856kj/kg②确定送风状态点在h-d图上根据室内26℃及相对湿度60﹪确定N点，过N点作ε线与90﹪ 相对湿度线相交与送风状态点S。则：hN=58kj/kg；hS=45kj/kg；tS=17℃；hw=80.5kj/kg③计算风量送风量：G=Q/(hn-hs)=11.077/（58-45）=0.852kg/s新风量：根据新风量的确定原则，求出最小新风量；a保证空气品质要求Gx=30×20=600m3/h（0.202kg/s）b保证房间正压（用换气次数法计算）Gx=373.5×2=747m3/h（0.251kg/s）c补充排风量（取小于新风量即可）。Gx/G=0.251/0.852=29.5%＞10%取新风量Gx=0.251kg/s④确定新、回风混合状态点由GX/G=（hC-hN）/(hw–hN)得hC=64.6kj/kg；tC=28.5℃⑤求系统耗冷量总耗冷量QS=G(hc-hs)=0.852×(64.6-45)=16.70kW新风冷负荷QX=GX(hw-hn)=0.251×(90-58)=8.032kW冬季已知：室内设计参数tn=18℃,相对湿度为45%；热负荷Q=2826W，湿负荷W=1.410g/s；室外设计参数tw=-8℃,相对湿度为66%。C1OεN100%CW①计算热湿比ε=Q/W=-2826/1.41=-2004kj/kg在h-d图上通过室内点N作出ε线②确定送风状态点设冬夏季送风量相同，求出冬季送风焓差：△h=Q/G=2.826/0.852=3.32kj/kg由此在ε线上找出送风点O点。hw=-4.5kj/kg;hN=33kj/kg;hO=36.32kj/kg;tO=26℃③确定混合点C点由GX/G=（hC-hN）/(hw–hN)得hC=21.9kj/kg；tC=10.5℃过C点作等焓湿线与tO等温线交于C1点，得hC1=35kj/kg。 ①求加热量Q=G(hc1-hc)=0.852×(35-10.5)=20.87kW各房间送风量与冷量计算见附录四3.3.2风机盘管加新风系统本系统采用的连接方式为新风与风机盘管各自独立送入房间，这种方式的好处是新风与风机盘管的运行互不干扰，即使风机盘管停止运行，新风量仍然保持不变。在实际工程设计中，这种方式对施工也较为简单，风管的连接方便；不利之处是室内至少有两个送风口，对室内的吊顶装修产生一些影响。O2εd回风口风机盘管WSW1O1Nd风机盘管送风NNS空调房间L1新风送风L2100%εdWd图新风与风机盘管送风各自独立送入房间连接方式①夏季新风送风点L1为in线与新风空调机的机器露点的交点，风机盘管送风点为室内夏季热湿比线εd与风机盘管机器露点的交点。①冬季新风先预热至W1点（tn线上）后，喷蒸汽加湿至送风点O1。风机盘管加热回风至O2点，沿着几乎与室内热湿比线εd的平行线送入室内。显然，如果仅有风机盘管送风，室内相对湿度将不断加大，但因有送风点含湿量（do1）小于室内含湿量（do2）的新风的不断送入，两者的综合作用使得室内湿度得以保证。下面以801房间为例计算风机盘管系统夏季已知室内设计参数tn=26℃,相对湿度为60%；冷负荷Q=957W，湿负荷W=0.072g/s；室外设计参数tw=35.2℃,tsw=26℃。①计算热湿比ε=Q/W=957/0.072=16443kj/kg在h-d图上根据室内26℃及相对湿度60﹪确定N点，过N点作ε线与90﹪相对湿度线相交与风机盘管送风状态点L2；则：hN=58kj/kg；hl2=44kj/kg；tl2=17℃；hw=80.5kj/kg②确定风量FP风量GF=Q/（hN-hl2）=0.957/（58-44）=0.068kg/s 新风量：根据新风量的确定原则，求出最小新风量；a保证空气品质要求Gx=30×2=60m3/h（0.0202kg/s）b保证房间正压（用换气次数法计算）Gx=80.35×1.5=120.5m3/h（0.0405kg/s）c补充排风量（取小于新风量即可）。Gx/G=0.0405/（0.068+0.0405）=37.2%＞10%取新风量Gx=0.0405kg/s总风量G=GF+Gx=0.068+0.0405=0.1085kg/s①冷量的确定风盘冷量QF=GF（hN-hl2）=0.957kw新风冷量QX=GX（hw-hN）=0.0405×（80.5-58）=0.911kw冬季已知：室内设计参数tn=18℃,相对湿度为45%；热负荷Q=898.1W，湿负荷W=0.072g/s；室外设计参数tw=-8℃,相对湿度为66%。①计算热湿比ε=Q/W=-898.1/0.072=-12473kj/kghwd=-4.5kj/kg;hNd=33kj/kg;dNd=5.8g/kg干空气；hw1=21.5kj/kg②确定O1点由dO1=dNd-W/Gx得dO1=5.8-0.072/0.046=4.23g/kg干空气可确定O1点。③确定N点根据新回风比例，利用作图法可确定N点。Gx/GF=0.0405/0.068=0.46hN=36kj/kg④确定送风点O2点过N点做ε线与过Nd点的等湿线相交点即位O2点。hO2=42kj/kg⑤计算耗热量QF=GF(hO2-hNd)=0.1007×(42-33)=0.91kw各房间风量与冷量计算见附录五附录一 各房间冷负荷汇总表时间08:0009:0010:0011:0012:0013:0014:0015:0016:0017:0018:00101室负荷1732.721929.692179.242382.912560.922533.912322.872132.001984.411562.461458.661028124.498852.449730.1510457.7911077.1711030.1310360.049752.539258.597261.166835.111037880.828608.779486.4810214.1210833.510786.4610116.379508.869014.927017.496591.441046926.868359.559217.109918.9110519.7110454.19774.569151.588650.157066.176656.011056866.947583.988450.879170.799784.599734.089064.138459.377971.325974.615547.231066926.868359.559217.109918.9110519.7110454.19774.569151.588650.157066.176656.011077880.828608.779486.4810214.1210833.510786.4610116.379508.869014.927017.496591.441089781.0610584.211556.6712379.813090.5313078.6112385.0611760.0511247.018816.578344.18一层汇总56120.573262886.9469324.0874657.3379219.6278857.8573913.9569424.8165791.4851782.148680.0920113166.063914532.2516098.6917435.2918583.7918801.118070.5317397.7216754.8612094.0111297.0220218991.508220877.7222959.9624735.8326266.4126557.825524.7624582.323657.3416768.6315781.042032464.612478.052487.562505.902520.302537.962550.052570.972587.962180.142168.33二层汇总34622.177537888.0241546.244677.0247370.4947896.8546145.3444550.9943000.1631042.7829246.38三层汇总34622.177537888.0241546.244677.0247370.4947896.8546145.3444550.9943000.1631042.7829246.384012494.142540.102596.452652.972704.192716.622690.282675.852665.042245.372224.324022323.512403.262496.742580.732651.362661.092609.682569.142533.132089.102038.394032323.512403.262496.742580.732651.362661.092609.682569.142533.132089.102038.394042323.512403.262496.742580.732651.362661.092609.682569.142533.132089.102038.394052323.512403.262496.742580.732651.362661.092609.682569.142533.132089.102038.394062323.512403.262496.742580.732651.362661.092609.682569.142533.132089.102038.394072323.512403.262496.742580.732651.362661.092609.682569.142533.132089.102038.394082097.352345.762650.562895.723112.253111.572910.092719.562558.822238.062103.004092496.332539.772577.142615.182642.652666.242675.032685.762683.322268.652255.374102278.762324.012363.002402.312430.502454.642463.432473.792470.452054.152038.534112278.762324.012363.002402.312430.502454.642463.432473.792470.452054.152038.534122491.092535.622574.612615.182645.712672.562684.242696.952695.412280.382265.3041334856.8635617.9436339.1537045.9637629.8237928.337785.0437724.9337562.5431180.5330738.764143157.993173.273183.883202.963217.363234.283245.273264.733279.512869.502855.48四层汇总66092.3567820.0469628.2471316.9472721.1573205.4272574.972130.2171584.359725.3958749.65501593.21631.53689.52747.72809.46833.44821.28808.60797.18707.14688.10502511.48573.95655.92722.62781.74779.95722.78670.71628.94518.99485.57503511.48573.95655.92722.62781.74779.95722.78670.71628.94518.99485.57504511.48573.95655.92722.62781.74779.95722.78670.71628.94518.99485.57505511.48573.95655.92722.62781.74779.95722.78670.71628.94518.99485.57506511.48573.95655.92722.62781.74779.95722.78670.71628.94518.99485.57507535.97596.27676.28741.47799.72797.28740.11688.48647.79539.79509.185083127.983405.333729.434003.534239.354257.984066.143894.913743.822863.472699.46509529.68591.29673.25741.47803.40804.86751.16701.91662.31553.87521.10510511.48573.95655.92722.62781.74779.95722.78670.71628.94518.99485.57511511.48573.95655.92722.62781.74779.95722.78670.71628.94518.99485.57512511.48573.95655.92722.62781.74779.95722.78670.71628.94518.99485.57513511.48573.95655.92722.62781.74779.95722.78670.71628.94518.99485.57514511.48573.95655.92722.62781.74779.95722.78670.71628.94518.99485.57515635.62665.17709.99747.72784.60782.26746.69717.93699.20612.09607.67 516682.01708.17734.02754.78770.73782.81785.84785.05776.84696.25700.25517467.92495.89523.36545.39562.06574.68577.70576.55567.44485.23486.88518467.92495.89523.36545.39562.06574.68577.70576.55567.44485.23486.88519676.78704.02731.49754.78773.80789.13795.05796.24788.94707.99710.18520655.92681.73707.02727.39742.68754.36757.12756.10747.76665.91667.87521462.23488.04513.33533.70548.99560.67563.43562.41554.07472.22474.18522488.32514.48540.33561.09577.04589.12592.15591.36583.15502.56506.56523467.92495.89523.36545.39562.06574.68577.70576.55567.44485.23486.88524467.92495.89523.36545.39562.06574.68577.70576.55567.44485.23486.88525676.78704.02731.49754.78773.80789.13795.05796.24788.94707.99710.18五层汇总16051.0217413.1619088.7620476.2121689.1721839.2320952.5920112.5619349.1516160.1415597.97六层汇总16051.0217413.1619088.7620476.2121689.1721839.2320952.5920112.5619349.1516160.1415597.97七层汇总16051.0217413.1619088.7620476.2121689.1721839.2320952.5920112.5619349.1516160.1415597.97801774.65798.19844.08895.56957.30986.66987.94994.071005.50939.66944.81802728.47773.26840.76899.43958.54963.18922.08892.52878.07797.05792.56803728.47773.26840.76899.43958.54963.18922.08892.52878.07797.05792.56804728.47773.26840.76899.43958.54963.18922.08892.52878.07797.05792.56805728.47773.26840.76899.43958.54963.18922.08892.52878.07797.05792.56806728.47773.26840.76899.43958.54963.18922.08892.52878.07797.05792.56807752.95795.58861.12918.28976.52980.51939.41910.29896.92817.85816.188083471.763721.104022.284283.654519.474548.284381.914246.334138.533304.033185.85809679.70729.08801.04863.71925.64931.54888.95855.26834.54746.11733.34810728.47773.26840.76899.43958.54963.18922.08892.52878.07797.05792.56811728.47773.26840.76899.43958.54963.18922.08892.52878.07797.05792.56812728.47773.26840.76899.43958.54963.18922.08892.52878.07797.05792.56813728.47773.26840.76899.43958.54963.18922.08892.52878.07797.05792.56814728.47773.26840.76899.43958.54963.18922.08892.52878.07797.05792.56815817.06831.83864.56895.56932.44935.48913.36903.41907.52844.61864.38816899.00907.48918.86931.59947.53966.04985.141006.851025.97974.321007.25817684.91695.19708.20722.19738.86757.91777.01798.36816.57763.30793.88818684.91695.19708.20722.19738.86757.91777.01798.36816.57763.30793.88819893.76903.33916.33931.59950.60972.36994.351018.051038.07986.051017.18820846.12856.43869.04882.36897.65914.97931.82950.52966.13909.65936.96821652.43662.74675.35688.67703.96721.28738.13756.83772.44715.96743.27822705.31713.79725.17737.90753.84772.35791.45813.16832.28780.63813.56823684.91695.19708.20722.19738.86757.91777.01798.36816.57763.30793.88824684.91695.19708.20722.19738.86757.91777.01798.36816.57763.30793.88825893.76903.33916.33931.59950.60972.36994.351018.051038.07986.051017.18八层汇总21410.8322336.2423654.5224843.4626056.4226365.2925875.6825591.4725503.0123028.6323181.11整楼总负荷339740冷负荷指标46.6附录二 各房间热负荷汇总表房间编号结构名称面积Aj(m2)KjW/(m2•℃)tR—to.w℃a朝向修正℅耗热量W房间热负荷W101南外墙60.56261-1574.261244.26南外窗6.482.93261-15419.60北内墙12.481.76260.70399.76西外墙25.350.56261-5350.64102南外墙7.20.56261-1589.112825.69南外窗20.882.93261-151352.04北外墙26.640.562610387.88北外窗1.442.932610109.70西内墙27.691.76260.70886.97103南外墙7.20.56261-1589.111938.73南外窗20.882.93261-151352.04北外墙26.640.562610387.88北外窗1.442.932610109.70104南外墙7.20.56261-1589.113004.45南外窗20.882.93261-151352.04北外墙13.680.562610199.18北外窗0.362.93261027.42北内墙14.041.76260.70449.73东内墙27.691.76260.70886.97105南外墙7.20.56261-1589.113602.96南外窗20.882.93261-151352.04北外墙26.640.562610387.88东内墙27.691.76260.70886.97西内墙27.691.76260.70886.97106同1043004.45107同1031938.73108南外墙14.820.56261-15183.413985.10南外窗25.742.93261-151666.74北外墙26.640.562610387.88北外窗1.442.932610109.70东内墙27.691.76260.70886.97东外墙25.350.56261-5350.64北内墙12.481.76260.70399.76总负荷21544.37301北外墙27.60.562610401.8610232.12北外窗15.62.9326101188.41北内墙12.81.76260.70410.01东外墙17.20.56261-5237.91东内墙32.41.76260.701037.84 南外墙21.440.56261-15265.34南外窗77.762.93261-155035.19西内墙28.41.76260.70909.71西外窗2.252.93261-5162.83西外墙42.150.56261-5583.02302北外墙560.562610815.3612328.35北外窗30.42.9326102315.87北内墙12.81.76260.70410.01东外墙42.150.56261-5583.02东外窗2.252.93261-5162.83东内墙28.41.76260.70909.71南外墙25.640.56261-15317.32南外窗101.562.93261-156576.31西外墙17.20.56261-5237.91303北外墙280.562610407.682701.17北内墙43.21.76260.701383.78西内墙28.41.76260.70909.71总负荷25261.64401南外墙6.560.56261-1581.19697.53南外窗3.362.93261-15217.57东外墙3.720.56261-551.46西外墙25.110.56261-5347.32402南外墙7.360.56261-1591.09337.15南外窗3.82.93261-15246.06403同402337.15404同402337.15405同402337.15406同402337.15407同402337.15408南外墙3.840.56261-1547.521180.70南外窗17.52.93261-151133.18409北外墙7.560.562610110.071132.23北外窗3.62.932610274.25西外墙3.10.56261-542.88西内墙22.011.76260.70705.02410北外墙7.560.562610110.07384.32北外窗3.62.932610274.25411同410384.32412北外墙7.560.562610110.071132.23北外窗3.62.932610274.25东外墙3.10.56261-542.88东内墙22.011.76260.70705.02413北外墙46.160.562610672.096303.07 北外窗20.82.9326101584.54北内墙9.921.76260.70317.76东外墙32.160.56261-5444.84东外窗2.252.93261-5162.83东内墙22.011.76260.70705.02南外墙50.720.56261-15627.71南外窗26.162.93261-151693.94西外墙6.820.56261-594.33414北外墙21.70.562610315.951020.98西内墙22.011.76260.70705.02总负荷14258.27701南外墙6.560.56261-1581.19646.08南外窗3.362.93261-15217.57东外墙25.110.56261-5347.32702南外墙7.360.56261-1591.09337.15南外窗3.82.93261-15246.06703同702337.15704同702337.15705同702337.15706同702337.15707南外墙7.360.56261-1591.09388.60南外窗3.82.93261-15246.06西外墙3.720.56261-551.46708南外墙3.840.56261-1547.521180.70南外窗17.52.93261-151133.18709南外墙7.360.56261-1591.09388.60南外窗3.82.93261-15246.06东外墙3.720.56261-551.46710同702337.15711同702337.15712同702337.15713同702337.15714同702337.15715南外墙6.560.56261-1581.19646.08南外窗3.362.93261-15217.57东外墙25.110.56261-5347.32716北外墙7.560.562610110.071132.23北外窗3.62.932610274.25西外墙3.10.56261-542.88西内墙22.011.76260.70705.02717北外墙7.560.562610110.07384.32北外窗3.62.932610274.25718同717384.32 719北外墙7.560.562610110.071132.23北外窗3.62.932610274.25东外墙3.10.56261-542.88东内墙22.011.76260.70705.02720北外墙7.960.562610115.90762.54北外窗3.22.932610243.78西内墙22.011.76260.40402.87721北外墙7.960.562610115.90359.67北外窗3.22.932610243.78722北外墙7.560.562610110.07427.20北外窗3.62.932610274.25西外墙3.10.56261-542.88723北外墙7.560.562610110.07384.32北外窗3.62.932610274.25724同723384.32725同7191132.23总负荷13104.945、6层热负荷同7层801南外墙6.560.56261-1581.19898.09南外窗3.362.93261-15217.57东外墙25.110.56261-5347.32屋顶24.3840.53260.750252.01802南外墙7.360.56261-1591.09638.52南外窗3.82.93261-15246.06屋顶29.160.53260.750301.37803同802638.52804同802638.52805同802638.52806同802638.52807南外墙7.360.56261-1591.09689.97南外窗3.82.93261-15246.06西外墙3.720.56261-551.46屋顶29.160.53260.750301.37808南外墙3.840.56261-1547.521658.18南外窗17.52.93261-151133.18屋顶46.20.53260.750477.48809南外墙7.360.56261-1591.09689.97南外窗3.82.93261-15246.06东外墙3.720.56261-551.46屋顶29.160.53260.750301.37810同802638.52811同802638.52812同802638.52 813同802638.52814同802638.52815南外墙6.560.56261-1581.19898.09南外窗3.362.93261-15217.57东外墙25.110.56261-5347.32屋顶24.3840.53260.750252.01816北外墙7.560.562610110.071433.59北外窗3.62.932610274.25西外墙3.10.56261-542.88西内墙22.011.76260.70705.02屋顶29.160.53260.750301.37817北外墙7.560.562610110.07685.69北外窗3.62.932610274.25屋顶29.160.53260.750301.37818同817685.69819北外墙7.560.562610110.071433.59北外窗3.62.932610274.25东外墙3.10.56261-542.88东内墙22.011.76260.70705.02屋顶29.160.53260.750301.37820北外墙7.960.562610115.901026.71北外窗3.22.932610243.78西内墙22.011.76260.40402.87屋顶25.560.53260.750264.16821北外墙7.960.562610115.90623.84北外窗3.22.932610243.78屋顶25.560.53260.750264.16822北外墙7.560.562610110.07728.57北外窗3.62.932610274.25西外墙3.10.56261-542.88屋顶29.160.53260.750301.37823北外墙7.560.562610110.07685.69北外窗3.62.932610274.25屋顶29.160.53260.750301.37824同823685.69825同8191433.59总负荷20642.15整楼总负荷146282.88热负荷指标20.0497370附录三 各房间湿负荷汇总表房间号房间名称人数群集系数单位散湿量湿负荷㎏/s湿负荷㎏/h101商铺50.891840.0002350.84598416102商铺300.891840.001409975.07590496103商铺300.891840.001409975.07590496104商铺250.891840.001174984.2299208105大厅200.891840.000939983.38393664106商铺250.891840.001174984.2299208107商铺300.891840.001409975.07590496108商铺350.891840.001644975.92188912201办公室350.961090.001051113.78399168202办公室500.961090.001501585.4057024203前厅100.961090.000300321.08114048三层同二层401餐厅100.93960.000284011.02244096402-412均与401相同413餐厅1500.93960.0042601715.3366144414前厅200.93960.000512471.84488192501标准间20.931090.00005820.20947097502-507，509-525均与501相同508会议室140.931090.00040731.46629678六、七、八层和五层相同附录四 全空气系统各房间计算参数表房间号冷负荷湿负荷送风点焓值混合点焓值室内焓值室外焓值总送风量新风量新风量新风比耗冷量kwkg/skj/kgkj/kgkj/kgkj/kgkg/skg/sm3/hkw1012.5610.0002447.763.258.080.50.2490.055162.240.2193.8510211.0770.0014145.064.658.080.50.8520.251746.90.29516.7010310.8340.0014144.365.358.080.50.7910.251746.90.31716.6110410.5200.0011746.363.058.080.50.8990.188560.20.20915.021059.7850.0009447.561.458.080.50.9320.126373.40.13512.9510610.5200.0011746.363.058.080.50.8990.188560.20.20915.0210710.8340.0014144.365.358.080.50.7910.251746.90.31716.6110813.0910.0016445.065.058.080.51.0070.306909.10.30320.1420118.8010.0010550.062.058.080.52.3500.3821136.80.16328.2020226.5580.0015050.062.058.080.53.3200.5511638.40.16639.842032.5880.0003045.961.958.080.50.2140.0341000.1573.4241337.9280.0042640.266.452.780.53.0341.51345000.49879.50附录五 风机盘管加新风系统各房间计算参数表房间号冷负荷湿负荷热湿比送风点焓值室内焓值室外焓值风盘风量新风量新风量风盘冷量新风冷量kwg/skj/kgkj/kgkj/kgkg/skg/sm3/hkwkw8010.9570.0581644349.45880.50.1110.041120.5250.9570.91158020.8990.0581544749.25880.50.1020.046135.60.8991.02558030.8990.0581544749.25880.50.1020.046135.60.8991.02558040.8990.0581544749.25880.50.1020.046135.60.8991.02558050.8990.0581544749.25880.50.1020.046135.60.8991.02558060.8990.0581544749.25880.50.1020.046135.60.8991.02558070.9180.0581577349.35880.50.1060.046135.60.9181.02558084.5480.4071116647.95880.50.4500.046135.64.5481.02558090.9320.0581601449.45880.50.1080.046135.60.9321.02558100.9630.0581654649.45880.50.1120.046135.60.9631.02558110.9630.0581654649.45880.50.1120.046135.60.9631.02558120.9630.0581654649.45880.50.1120.046135.60.9631.02558130.9630.0581654649.45880.50.1120.046135.60.9631.02558140.9630.0581654649.45880.50.1120.046135.60.9631.02558150.9350.0581606549.45880.50.1090.041120.5250.9350.91158161.0260.0581762949.65880.50.1220.046135.61.0261.02558170.8170.0581403848.95880.50.0900.046135.60.8171.02558180.8170.0581403848.95880.50.0900.046135.60.8171.02558191.0380.0581783549.65880.50.1240.046135.61.0381.02558200.9660.0581659849.45880.50.1120.046135.60.9661.02558210.7720.0581326548.75880.50.0830.046135.60.7721.02558220.8320.05814296495880.50.0920.046135.60.8321.02558230.8170.0581403848.95880.50.0900.046135.60.8171.02558240.8170.0581403848.95880.50.0900.046135.60.8171.02558251.0380.0581783549.65880.50.1240.046135.61.0381.02557010.6460.0581110047.95880.50.0640.041120.5250.6460.91157020.3370.058579035.55880.50.0150.046135.60.3371.02557030.3370.058579035.55880.50.0150.046135.60.3371.02557040.3370.058579035.55880.50.0150.046135.60.3371.02557050.3370.058579035.55880.50.0150.046135.60.3371.02557060.3370.058579035.55880.50.0150.046135.60.3371.02557070.3890.058668441.55880.50.0240.046135.60.3891.02557081.1810.2544648355880.50.0510.046135.61.1811.02557090.3890.058668441.55880.50.0240.046135.60.3891.02557100.3370.058579035.55880.50.0150.046135.60.3371.02557110.3370.058579035.55880.50.0150.046135.60.3371.02557120.3370.058579035.55880.50.0150.046135.60.3371.02557130.3370.058579035.55880.50.0150.046135.60.3371.02557140.3370.058579035.55880.50.0150.046135.60.3371.0255 7150.6460.0581110047.95880.50.0640.041120.5250.6460.91157161.1320.0581945049.85880.50.1380.046135.61.1321.02557170.3840.058659841.25880.50.0230.046135.60.3841.02557180.3840.058659841.25880.50.0230.046135.60.3841.02557191.1320.0581945049.85880.50.1380.046135.61.1321.02557200.7630.0581311048.75880.50.0820.046135.60.7631.02557210.360.0586186395880.50.0190.046135.60.361.02557220.4270.058733743.65880.50.0300.046135.60.4271.02557230.3840.058659841.25880.50.0230.046135.60.3841.02557240.3840.058659841.25880.50.0230.046135.60.3841.02557251.1320.0581945049.85880.50.1380.046135.61.1321.0255'