1.2集中供暖热负荷
1.2.1集中供热系统热负荷的概算和特征
集中供热系统的热用户有供热、通风、热水供应、空气调节、生产工艺等用热系统。这些用热系统热负荷的大小及其性质是供热规划和设计的最重要依据。对集中供热系统进行规划或初步设计时，往往尚未进行各类建筑物的具体设计工作，不可能提供较准确的建筑物热负荷的资料。因此，通常是采用概算指标来确定各类热用户的热负荷。
1.2.2热负荷的计算
一、计算公式【3】 Qh=qhA/103 （1-1）
Qh-----------采暖设计热负荷（KW） qh-----------采暖热指标（W/m2）
A------------采暖建筑物的建筑面积（m2） 二、负荷计算
根据《热力网设计规范》可知住宅的采暖热指标在40～45（W/m2）,这里取qh=45(W/m2)、商业网点取qh=70(w/㎡)
1#的负荷计算：
由CAD查得单层单元面积得单元面积：
1#/一单元： A=193.5017×6=1161.01（㎡）
代入公式得：Qh=45*1161.01/103=52.24(kw)
同理计算得个楼个单元的负荷，填入下表1-1：
表1-1负荷计算
楼编号 1# /1 1#/2 1# /3 1#/4
单层面积 ㎡ 193.5017 192.7593 175.8836 194.8536 层数 6 6 6 6 建筑面积A ㎡ 1161.0102 1156.5558 1055.3016 1169.1216 采暖热指标q W/㎡ 45 45 45 45 热负荷Qh kw 52.245459 52.045011 47.488572 52.610472 4
1#总 2#/1 2#/2 2#/3 2#/4 2#/6 2#总 3#/1 3#/2 3#/3 3#总 4#/1 4#/2 4#/3 4#总 5#/1 5#/2 5#/3 5#总 6#/1 6#/2 6#/3 6#/总 7#/1 7#/2 7#总 8#/1.1 8#/1.2 8#/2.1 8#/2.2 8#/3.1 8#/3.2
199.8046 198.2016 191.5056 198.2016 191.5056 198.2016 1368.9262 242.5093 242.5093 265.4276 119.6746 219.0216 233.9517 233.5206 230.4095 197.8686 661.7987 242.9984 239.5686 72.6381 264.42 264.42 119.7167 118.4841 101.739 98.7903 100.3508 93.4317 6 6 6 6 6 6 6 6 6 2 6 6 6 6 6 6 6 5 6 2 6 6 5 6 5 6 5 6 4541.9892 1198.8276 1189.2096 1149.0336 1189.2096 1149.0336 1189.2096 8213.5572 1455.0558 1455.0558 530.8552 3440.9668 718.0476 1314.1296 1403.7102 3435.8874 1401.1236 1382.457 1187.2116 3970.7922 1214.992 1437.4116 145.2762 2797.6798 1586.52 1586.52 3173.04 598.5835 710.9046 508.695 592.7418 501.754 560.5902 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 204.389514 53.947242 53.514432 51.706512 53.514432 51.706512 53.514432 369.610074 65.477511 65.477511 23.888484 154.843506 32.312142 59.135832 63.166959 154.614933 63.050562 62.210565 53.424522 178.685649 54.67464 64.683522 6.537429 125.895591 71.3934 71.3934 142.7868 26.9362575 31.990707 22.891275 26.673381 22.57893 25.226559 5
8#总 9#/1 9#/2 9#/3 9#/4 9#总 11#/1 11#/2 11#/3 11#/4 11#总 12#/1 12#/2 12#/3 12#总 13#/1 13#/2 13#总 14#/1 14#/2 14#/3 14#/4 14#总 15#/1 15#/2 15#/3 15#总 16#/1 16#/2 16#/3 16#总 17#/1 17#/2
194.5518 194.5542 237.9514 432.5056 239.2983 223.2335 227.8521 206.8856 177.1934 187.8115 69.4304 226.4419 226.4416 229.9144 178.6252 209.8815 198.5513 195.9701 196.1943 369.543 195.6355 208.8227 253.7456 238.092 231.4661 6 6 6 2 6 6 6 6 6 6 2 6 6 6 6 6 6 6 6 1 6 6 6 6 6 3473.2691 1167.3108 1167.3252 1427.7084 865.0112 4627.3556 1435.7898 1339.401 1367.1126 1241.3136 5383.617 1063.1604 1126.869 138.8608 2328.8902 1358.6514 1358.6496 2717.301 1379.4864 1071.7512 1259.289 1191.3078 4901.8344 1175.8206 1177.1658 369.543 2722.5294 1173.813 1252.9362 1522.4736 3949.2228 1428.552 1388.7966 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 156.2971095 52.528986 52.529634 64.246878 38.925504 208.231002 64.610541 60.273045 61.520067 55.859112 242.262765 47.842218 50.709105 6.248736 104.800059 61.139313 61.139232 122.278545 62.076888 48.228804 56.668005 53.608851 220.582548 52.911927 52.972461 16.629435 122.513823 52.821585 56.382129 68.511312 177.715026 64.28484 62.495847 6
17#/3 17#总 18#/1 18#/2 18#/3 18#总 19#/1 19#/2 19#/3 19#总 20#/1 20#/2 20#/3 20#/4 20#总 21#/1 21#/2 21#/3 21#/4 21#/5 21#/6 21#总 22#/1 22#/2 22#/3 22#/4 22#总 B1#/1 B1#/2 B1#/3 B1#总 B2#/1 B2#/2
196.1277 159.3769 187.2967 194.9376 239.1487 231.4661 239.1487 196.1277 191.1583 191.1583 196.1277 98.5303 189.505 120.5032 222.6315 216.0055 186.2762 186.4165 216.0055 195.0404 188.593 224.7174 225.5488 232.7841 224.2454 454.307 6 6 6 1 6 6 6 6 6 6 6 5 6 6 6 6 6 6 6 6 6 6 6 6 6 6 1176.7662 3994.1148 956.2614 1123.7802 194.9376 2274.9792 1434.8922 1388.7966 1434.8922 4258.581 1176.7662 1146.9498 1146.9498 1176.7662 4647.432 492.6515 1137.03 723.0192 1335.789 1296.033 1117.6572 6102.1799 1118.499 1296.033 1170.2424 1131.558 4716.3324 1348.3044 1353.2928 1396.7046 4098.3018 1345.4724 2725.842 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 52.954479 179.735166 43.031763 50.570109 8.772192 102.374064 64.570149 62.495847 64.570149 191.636145 52.954479 51.612741 51.612741 52.954479 209.13444 22.1693175 51.16635 32.535864 60.110505 58.321485 50.294574 274.5980955 50.332455 58.321485 52.660908 50.92011 212.234958 60.673698 60.898176 62.851707 184.423581 60.546258 122.66289 7
B2#/3 B2#总 B3#/1 B3#/2 B3#/3 B3#总 B4#/1 B4#/2 B4#/3 B4#/4 B4总 B5#/1 B5#/2 B5#/3 B5#总 B6#/1 B6#/2 B6#/3 B6#总 B7#/1 B7#/2 B7#总 B8#/1 B8#/2 B8#/3 B8#/4 B8#总 B9#/1 B9#/2 B9#/3 B9#总 B10#/1 B10#/2
396.6035 245.6297 286.4843 231.6741 207.6826 234.3781 256.4595 406.7284 195.9527 238.7856 215.0099 253.17 267.2405 246.0165 230.3741 300.0395 211.9175 228.9648 237.1766 471.1582 240.67 233.7591 241.3147 325.8946 325.8945 1 6 6 6 6 6 6 1 6 6 6 6 6 6 6 6 6 6 6 1 6 6 6 6 6 396.6035 4467.9179 1473.7782 1718.9058 1390.0446 4582.7286 1246.0956 1406.2686 1538.757 406.7284 4597.8496 1175.7162 1432.7136 1290.0594 3898.4892 1519.02 1603.443 1476.099 4598.562 1382.2446 1800.237 3182.4816 1271.505 1373.7888 1423.0596 471.1582 4539.5116 1444.02 1402.5546 1447.8882 4294.4628 1955.3676 1955.367 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 17.8471575 201.0563055 66.320019 77.350761 62.552007 206.222787 56.074302 63.282087 69.244065 18.302778 206.903232 52.907229 64.472112 58.052673 175.432014 68.3559 72.154935 66.424455 206.93529 62.201007 81.010665 143.211672 57.217725 61.820496 64.037682 21.202119 204.278022 64.9809 63.114957 65.154969 193.250826 87.991542 87.991515 8