暖通课程设计报告.doc

负荷及风量的计算 h 空气处理过程一 ：新风量的确定：查空气调节设计手册中民用建筑最小新风量表5-2得办公室每人最小新风量为18m hp ，走廊及大厅的每人最小新风量为10 m hp 。根据空气调节设计手册中我国主要城市和地区的气象计算参数查得沈阳的室外干球温度为31.4，室外湿球温度为25.4。规定沈阳的室内相对湿度为40，室内温度为25。人数的确定：办公室3人 走廊及大厅15人101室新风量：31854m h 根据湿球温度查焓湿图得室外焓值hw为78 kjkg ，根据室内相对湿度和室内温度查得室内焓值ho为45 kjkg 。新风负荷：gm (hwho) 541.29360078450.64kw103、105、111室新风量：31854m h新风负荷：gm (hwho) 541.29360078450.64kw113室新风量：31854m h新风负荷：gm (hwho) 541.29360078450.64kw 102室新风量：31854m h新风负荷：gm (hwho) 541.29360078450.64kw 104、106、108、110、112、114室新风量：31854m h新风负荷：gm (hwho) 541.29360078450.64kw116室新风量：31854m h新风负荷：gm (hwho) 541.29360078450.64kw 走廊及大厅新风量：1510150m h新风负荷：gm (hwho) 1501.29360078451.77kw 二：负荷计算： (一)101办公室 由附录2-3查得使用型墙且传热系数k为1.5，再由附录2-4查得型外墙冷负荷逐时计算温度，查附录2-6得td=1.4查表2-8的外表面放热系数修正值k为1.0，查表2-9得吸收系数修正系数k为0.94由公式 qc=ak(tc- tr)计算如下表：101室东外墙冷负荷时间891011121314151617tc3635.535.235.035.035.235.636.136.637.1td -1.9k 1k 0.94tc32.0531.5831.3031.1131.1131.3031.6832.1532.6233.10tr 25t7.056.586.306.116.116.306.687.157.628.10k 1.5a 6.240.8124qc253.80236.88226.80219.96219.96226.80240.48257.40274.32291.60101室南外墙冷负荷：时间891011121314151617tc34.634.233.933.533.232.932.832.933.133.4td -1.4k 1k 0.94tc31.2130.8330.5530.1729.9029.6129.5129.6129.8030.08tr 25t6.215.835.555.174.904.614.514.614.805.08k 1.5a 3.641.8210.8qc100.6094.4589.9183.7579.3874.6873.0674.6877.7682.30 由表2-8查得o18.6w(k) i=8.1 w(k)查附录2-8的双层玻璃的kw值为2.94 w(k)，再由附录2-9查得玻璃窗传热系数的修正值，对金属框双层窗应乘以1.2的修正系数，有附录2-10查出玻璃窗冷负荷计算温度tc（），根据公式2-10 qc=cwkw aw(tc+td-tr)计算结果如下表：101室东外窗瞬时传热冷负荷： 时间891011121314151617tc()26.927.92929.930.831.531.932.232.232.0td -125.926.92828.929.830.530.931.231.231tr 25t0.91.933.94.85.55.96.26.26kw 2.94 1.23.528aw 0.810.8qc2.545.368.4711.013.5415.5116.6417.4817.4816.92101室南外窗瞬时传热冷负荷： 时间891011121314151617t()26.927.92929.930.831.531.932.232.232.0td -125.926.92828.929.830.530.931.231.231tr 25t0.91.933.94.85.55.96.26.26kw 2.94 1.23.528aw 1.823.6qc11.4324.1338.149.5360.9669.8574.9378.7478.7476.2由附录2-15查得双层钢窗有效面积系数ca=0.75，故窗的有效面积为aw=a0.75。由附录2-13查得遮挡系数cs=0.86，由附录2-14查得遮阳系数ci=0.5，于是综合遮阳系数cc,s=0.860.5=0.43。再由附录2-12查得纬度40时东向日射得热因数dj,max=599w，南向日射得热因数dj,max=302w。因沈阳地区北纬4646，属于北区，故由附录2-17查得北区有内遮阳的玻璃窗冷负荷系数逐时值clq由公式qc=caawcc,scidjmaxclq计算逐时进入玻璃窗日射得热引起的冷负荷，如下表：101室东窗透入日射得热引起的冷负荷： 时间891011121314151617clq0.820.790.590.380.240.240.230.210.180.15dj,max 599cc,s 0.860.50.43aw 0.80.750.6q126.72122.0991.1858.7337.0937.0935.5432.4527.8223.18 101室南窗透入日射得热引起的冷负荷 ： 时间891011121314151617clq0.260.40.580.720.840.80.620.450.320.24dj,max 302cc,s 0.860.50.43aw 360.752.7q91.16140.24203.36252.44294.52280.5217.38157.78112.284.14 办公室属轻度劳动，查表2-13，当室温为25时，每人散发的显热和潜热为64w和117w，由表2-12查取群集系数=0.96，由附录2-23查得人体显热散热冷负荷系数逐时值按公式qc()=qsnclq, qc=q1n计算人体显热散热逐时冷负荷，计算结果如下表：101室人体散热：时间891011121314151617clq00.530.620.690.740.770.80.830.850.87qs 64n 3 0.96qc()097.69114.28127.18136.40141.93147.46152.99156.67160.36ql 117qc0336.96合计0434.65451.24464.14473.36478.89484.42489.95493.63497.32 由于明装荧光灯，镇流器装设在办公室内，故镇流器消耗功率系数n1取1.2，且可按照自然通风散热于顶棚内，故取灯罩隔热系数n2为0.6，由附录2-22查得照明散热冷负荷系数，按公式2-21qc=n1n2nclq计算结果如下表：101室照明电热设备形成的冷负荷：时间891011121314151617clq0.630.900.910.930.930.940.950.950.950.96n1 1.2n2 0.6n 150qc68.0497.298.28100.44100.44101.52102.6102.6102.6103.68101室各分项逐时冷负荷汇总表：时间891011121314151617外墙负荷354.4331.33316.71303.71299.34301.48313.54332.08352.08373.9窗传热负荷13.9729.4946.5760.5374.585.3691.5796.2296.2293.12窗日射负荷217.88262.33114.54311.17331.61317.59252.92190.23140.02107.32人员负荷0434.65451.24464.14473.36478.89484.42489.95493.63497.32照明电热设备负荷68.0497.298.28100.44100.44101.52102.6102.6102.6103.68总计654.2911551027.31239.991279.31284.81245.11211.11184.61175.3 (二) 103105111办公室 由于103105111室都只有南外墙需要考虑计算负荷，为了简便明了我们将其一起进行计算，方法和计算101室的方法相同，且列表如下： 103、105、111室南外墙冷负荷：时间891011121314151617tc34.634.233.933.533.232.932.832.933.133.4td -1.4k 1k 0.94tc31.2130.8330.5530.1729.9029.6129.5129.6129.8030.08tr 25t6.215.835.555.174.904.614.514.614.805.08k 1.5a 3.641.8210.8qc100.6094.4589.9183.7579.3874.6873.0674.6877.7682.30103、105、111室南外窗瞬时传热冷负荷： 时间891011121314151617t()26.927.92929.930.831.531.932.232.232.0td -125.926.92828.929.830.530.931.231.231tr 25t0.91.933.94.85.55.96.26.26kw 2.94 1.23.528aw 1.823.6qc11.4324.1338.149.5360.9669.8574.9378.7478.7476.2 103、105、111室南外窗透入日射得热引起的冷负荷： 时间891011121314151617clq0.260.400.580.720.840.800.620.450.320.24dj,max 302cc,s 0.860.50.43aw 3.60.752.7q91.16140.25203.36252.45294.52280.5217.38157.8112.284.15103、105、111室人体散热：时间891011121314151617clq00.530.620.690.740.770.80.830.850.87qs 64n 3 0.96qc()097.69114.28127.18136.40141.93147.46152.99156.67160.36ql 117qc0336.96合计0434.65451.24464.14473.36478.89484.42489.95493.63497.32103、105、111室照明电热设备形成的冷负荷：时间891011121314151617clq0.630.900.910.930.930.940.950.950.950.96n1 1.2n2 0.6n 150qc68.0497.298.28100.44100.44101.52102.6102.6102.6103.68 103、105、111室各分项逐时冷负荷汇总表：时间891011121314151617外墙负荷100.694.4589.9183.7579.3874.6873.0674.6877.7682.3窗传热负荷13.9729.4946.5760.5374.585.3691.5796.2296.2293.12窗日射负荷91.16140.25203.36252.45294.52280.5217.38157.8112.284.15人员负荷0434.65451.24464.14473.36478.89484.42489.95493.63497.32照明电热设备负荷68.0497.298.28100.44100.44101.52102.6102.6102.6103.68总计273.77796.04889.36961.311022.21021969.03921.25882.41860.57（三）113办公室：由于115室不设空调不计算外围护结构负荷，则113室靠近115室的内墙与115会有传热需计算内围护结构的冷负荷，且南外墙冷负荷，南外窗瞬时传热冷负荷，南外窗透入日射得热引起的冷负荷，人体散热，照明电热设备形成的冷负荷与以上的数据相同。内围护结构冷负荷得计算：由公式qc=kiai(to,m+ta-tr)计算，由前面知道墙的传热系数k=1.5 w(k)，面积a=（1.8+2.2+2.2）4=24.8因此qc=1.524.8（31.4+1-25）=275.28w时间891011121314151617外墙负荷100.694.4589.9183.7579.3874.6873.0674.6877.7682.3窗传热负荷13.9729.4946.5760.5374.585.3691.5796.2296.2293.12窗日射负荷91.16140.25203.36252.45294.52280.5217.38157.8112.284.15人员负荷0434.65451.24464.14473.36478.89484.42489.95493.63497.32照明电热设备负荷68.0497.298.28100.44100.44101.52102.6102.6102.6103.68内围护负荷 275.28总计301.051071.31164.61236.61297.51296.31244.31196.51157.71135.9 113室各分项逐时冷负荷汇总表：(四)102办公室102室东外墙冷负荷时间891011121314151617tc3635.535.235.035.035.235.636.136.637.1td -1.9k 1k 0.94tc32.0531.5831.3031.1131.1131.3031.6832.1532.6233.10tr 25t7.056.586.306.116.116.306.687.157.628.10k 1.5a 6.240.8124qc253.80236.88226.80219.96219.96226.80240.48257.40274.32291.60102室北外墙冷负荷：时间891011121314151617tc32.332.131.831.031.431.331.231.231.331.4td -1.6k 1k 0.94tc28.8628.8628.3927.6428.0127.9227.8227.8227.9228.01tr 25t3.863.863.392.643.012.922.822.822.923.01k 1.5a 3.641.8210.8qc62.5362.5354.9242.7748.7647.345.6845.6847.348.76102室东外窗瞬时传热冷负荷： 时间891011121314151617tc()26.927.92929.930.831.531.932.232.232.0td -125.926.92828.929.830.530.931.231.231tr 25t0.91.933.94.85.55.96.26.26kw 2.94 1.23.528aw 0.810.8qc2.545.368.4711.013.5415.5116.6417.4817.4816.92102室北外窗瞬时传热冷负荷： 时间891011121314151617t()26.927.92929.930.831.531.932.232.232.0td -125.926.92828.929.830.530.931.231.231tr 25t0.91.933.94.85.55.96.26.26kw 2.94 1.23.528aw 1.823.6qc11.4324.1338.149.5360.9669.8574.9378.7478.7476.2102室东窗透入日射得热引起的冷负荷： 时间891011121314151617clq0.820.790.590.380.240.240.230.210.180.15dj,max 599cc,s 0.860.50.43aw 0.80.750.6q126.72122.0991.1858.7337.0937.0937.0932.4527.8223.18 102室北窗透入日射得热引起的冷负荷 ： 时间891011121314151617clq0.540.650.750.810.830.830.790.710.600.61dj,max 114cc,s 0.860.50.43aw 3.60.752.7q71.4786.0399.26107.2109.85109.85104.5693.9779.4180.73102室人体散热：时间891011121314151617clq00.530.620.690.740.770.80.830.850.87qs 64n 3 0.96qc()097.69114.28127.18136.40141.93147.46152.99156.67160.36ql 117qc0336.96合计0434.65451.24464.14473.36478.89484.42489.95493.63497.32102室照明电热设备形成的冷负荷：时间891011121314151617clq0.630.900.910.930.930.940.950.950.950.96n1 1.2n2 0.6n 150qc68.0497.298.28100.44100.44101.52102.6102.6102.6103.68102室各分项逐时冷负荷汇总表：时间891011121314151617外墙负荷316.33299.41281.72262.96268.72274.1286.16303.08321.62340.36窗传热负荷13.9729.4946.5760.5374.585.3691.5796.2296.2293.12窗日射负荷198.19208.12190.44165.93146.94146.94141.65126.42107.23103.91人员负荷0434.65451.24464.14473.36478.89484.42489.95493.63497.32照明电热设备负荷68.0497.298.28100.44100.44101.52102.6102.6102.6103.68总计596.531068.91068.3105410641086.81106.41118.31121.31138.4（五）104、106、108、110、112、114办公室104、106、108、110、112、114室北外墙冷负荷：时间891011121314151617tc32.332.131.831.031.431.331.231.231.331.4td -1.6k 1k 0.94tc28.8628.8628.3927.6428.0127.9227.8227.8227.9228.01tr 25t3.863.863.392.643.012.922.822.822.923.01k 1.5a 3.641.8210.8qc62.5362.5354.9242.7748.7647.345.6845.6847.348.76104、106、108、110、112、114室北外窗瞬时传热冷负荷： 时间891011121314151617t()26.927.92929.930.831.531.932.232.232.0td -125.926.92828.929.830.530.931.231.231tr 25t0.91.933.94.85.55.96.26.26kw 2.94 1.23.528aw 1.823.6qc11.4324.1338.149.5360.9669.8574.9378.7478.7476.2104、106、108、110、112、114室北窗透入日射得热引起的冷负荷 ： 时间891011121314151617clq0.540.650.750.810.830.830.790.710.600.61dj,max 114cc,s 0.860.50.43aw 3.60.752.7q71.4786.0399.26107.2109.85109.85104.5693.9779.4180.73104、106、108、110、112、114室人体散热：时间891011121314151617clq00.530.620.690.740.770.80.830.850.87qs 64n 3 0.96qc()097.69114.28127.18136.40141.93147.46152.99156.67160.36ql 117qc0336.96合计0434.65451.24464.14473.36478.89484.42489.95493.63497.32104、106、108、110、112、114室照明电热设备形成的冷负荷：时间891011121314151617clq0.630.900.910.930.930.940.950.950.950.96n1 1.2n2 0.6n 150qc68.0497.298.28100.44100.44101.52102.6102.6102.6103.68104、106、108、110、112、114室各分项逐时冷负荷汇总表：时间891011121314151617外墙负荷62.5362.5354.9242.7748.7647.345.6845.6847.348.76窗传热负荷11.4324.1338.149.5360.9669.8574.9378.7478.7476.2窗日射负荷71.4786.0399.26107.2109.85109.85104.5693.9779.4180.73人员负荷0434.65451.24464.14473.36478.89484.42489.95493.63497.32照明电热设备负荷68.0497.298.28100.44100.44101.52102.6102.6102.6103.68总计202.04704.54741.8764.08793.37807.41812.19810.94801.68806.69 （六）116办公室116室北外墙冷负荷：时间891011121314151617tc32.332.131.831.031.431.331.231.231.331.4td -1.6k 1k 0.94tc28.8628.8628.3927.6428.0127.9227.8227.8227.9228.01tr 25t3.863.863.392.643.012.922.822.822.923.01k 1.5a 3.641.8210.8qc62.5362.5354.9242.7748.7647.345.6845.6847.348.76 116室西外墙冷负荷：时间891011121314151617tc()37.837.336.836.335.935.535.234.934.834.8td-1.9k1 k0.94tc()33.7533.2832.8132.3431.9631.5831.331.0230.9330.93tr25t8.758.287.817.346.966.586.36.025.935.93k1.5a24qc()315298.1281.2264.2250.6236.9226.8216.7213.5213.5116室北外窗瞬时传热冷负荷： 时间891011121314151617t()26.927.92929.930.831.531.932.232.232.0td -125.926.92828.929.830.530.931.231.231tr 25t0.91.933.94.85.55.96.26.26kw 2.94 1.23.528aw 1.823.6qc11.4324.1338.149.5