耗电输热比-20111029

热水采暖系统实际耗电输热比检测研究徐选才中国建筑科学研究院2011年10月29日北京为什么要研究？《民用建筑节能设计标准》JGJ26-95（-2010）和《公共建筑节能设计标准》GB50189-2005实际工程中“大马拉小车”现象《采暖居住建筑节能检验标准》JGJ132-2001技术研究路线1)利用《民用建筑节能设计准则》编制组在1983～85年完成的测试数据，计算理论、设计、实际和实际耗电输热比期望值，并比较分析数据关系。2)根据水泵2006年新样本数据，对上述试验小区的水泵进行重新选泵，并再次计算设计耗电输热比，比较前后的变化。3）通过结果分析，提出控制指标限值。耗电输热比的分类理论耗电输热比(EHRth)设计耗电输热比(EHRde)实际耗电输热比(EHRac)实际耗电输热比期望值(EHRac-e)理论耗电输热比定义在采暖室内外计算温度条件下，全日水泵理论输送耗电量（水泵轴功耗）与全日系统理论供热量的比值。理论耗电输热比计算tHEHRth3103.3设计耗电输热比定义在采暖室内外计算温度条件下，水泵处于铭牌工况下全日水泵输送耗电量与全日系统理论供热量的比值。（水泵轴功耗）实际耗电输热比定义在任意运行工况下，全日水泵输送耗电量（水泵轴功耗）与全日系统实际供热量的比值。实际耗电输热比期望值定义在设定运行条件下，全日水泵输送耗电量（水泵轴功耗）与全日系统最大有效供热量的比值。提出实际耗电输热比期望值的理由设计耗电输热比是否可作为检测目标？实际耗电输热比是否可作为检测目标？系统最大有效供热量定义在给定运行条件下，采暖系统所能提供的最大的、合理的供热量。何谓给定运行条件水泵的铭牌参数必须满足采暖系统设计供热负荷的要求系统的供热负荷率应达到设计供热负荷的50%何谓给定运行条件水泵运行方式应满足下列条件：•对于变频系统，应按工频运行，启泵台数满足设计工况要求；•对于采用多台泵并联运行的系统，启泵台数应满足设计工况要求；•对于采用大小泵互为备用的系统，应启动大泵运行；-对于水泵台数为一用一备的系统，应保证有一台泵正常运行。如何确定最大有效供热量室内外温差修正法供回水温差修正法系统的设计日供热量实际耗电输热比期望值计算eacmaceacQEHR实际耗电输热比期望值计算当QQac时，},min{QQQpeactcGQacp24实际耗电输热比期望值计算当QQac时，QQeac设计计算条件下的理论耗电输热比序号地点面积室外管网温差热源阻力用户阻力比摩阻局阻系数管网阻力系统阻力理论输热比1建研院347997842512280.157.221.20.00282和平里七区535296062512280.155.619.60.00263团结湖一区486425302512280.154.918.90.00254关东店461006662512280.156.120.10.00275月坛北街12号4261010002512260.156.920.90.00286劲松一区1194307002512280.156.420.40.00277劲松五区808059002512280.158.322.30.00298劲松八区814189002512280.158.322.30.00299新兴里小区2600030025122100.153.517.50.00231983设计耗电输热比（EHRde）序号地点面积热指标温差水量阻力流量扬程型号流量扬程轴功率效率台数输热比1建研院3479958.15250.019321.20.020323.34BA-12A0.023628.68.576.010.00422和平里七区5352958.15250.029719.60.031221.54BA-12A0.030623.39.573.510.00313团结湖一区4864258.15250.027018.90.028420.84BA-12A0.030623.39.573.510.00344关东店4610058.15250.025620.10.026922.14BA-12A0.030623.39.573.510.00355月坛北街12号4261058.15250.023720.90.024923.04BA-12A0.030623.39.573.510.00386劲松一区11943058.15250.066420.40.069722.58BA-12A0.069424.020.181.310.00297劲松五区8080558.15250.044922.30.047124.56BA-8A0.047125.815.776.010.00338劲松八区8141858.15250.045222.30.047524.56BA-8A0.047125.815.776.010.00339新兴里小区2600058.15250.014417.50.015219.23B330.015328.86.2568.210.00411983理论与设计耗电输热比序号地点采暖室外管网供回水理论耗电设计耗电设计值比建筑面积主干线总长温差输热比输热比理论值1建研院34799784250.00280.00421.502和平里七区53529606250.00260.00311.183团结湖一区48642530250.00250.00341.354关东店46100666250.00270.00351.335月坛北街12号426101000250.00280.00381.396劲松一区119430700250.00270.00291.077劲松五区80805900250.00290.00331.148劲松八区81418900250.00290.00331.139新兴里小区26000300250.00230.00411.792006设计耗电输热比（EHRde）序号地点面积供热温差水量阻力要求要求水泵铭牌铭牌铭牌水泵运行设计热指标流量扬程型号流量扬程轴功率效率台数输热比1建研院3479958.15250.019321.20.020323.380-65-135K0.020824.06.4476.010.00322和平里七区5352958.15250.029719.60.031221.5100-80-146K0.030624.09.0080.010.00293团结湖一区4864258.15250.027018.90.028420.8100-80-146K0.030624.09.0080.010.00324关东店4610058.15250.025620.10.026922.1100-80-146K0.030624.09.0080.010.00345月坛北街12号4261058.15250.023720.90.024923.0100-160B0.024124.07.8772.010.00326劲松一区11943058.15250.066420.40.069722.5125-100-169K0.069428.024.4178.010.00357劲松五区8080558.15250.044922.30.047124.5100-80-160K0.047226.015.2279.010.00328劲松八区8141858.15250.045222.30.047524.5100-80-160K0.047226.015.2279.010.00329新兴里小区2600058.15250.014417.50.015219.265-50-135K0.015622.04.6472.510.00312006设计与理论耗电输热比序号地点采暖室外管网供回水理论耗电设计耗电设计值比建筑面积主干线总长温差输热比输热比理论值1建研院34799784250.00280.00321.142和平里七区53529606250.00260.00291.123团结湖一区48642530250.00250.00321.284关东店46100666250.00270.00341.265月坛北街12号426101000250.00280.00321.156劲松一区119430700250.00270.00351.307劲松五区80805900250.00290.00321.108劲松八区81418900250.00290.00321.099新兴里小区26000300250.00230.00311.33实际耗电输热比期望值限值形成1983～19849小区理论耗电输热比0.0023～0.00299小区设计耗电输热比0.0029～0.00422006～20079小区设计耗电输热比0.0029～0.0035设计耗电输热比改善度序号地点采暖理论循环理论系统设计耗电设计耗电建筑面积水量阻力输热比-83输热比-06改善度1建研院347990.019321.20.00420.0032-24.272和平里七区535290.029719.60.00310.0029-5.303团结湖一区486420.027018.90.00340.0032-5.304关东店461000.025620.10.00350.0034-5.305月坛北街12号426100.023720.90.00380.0032-17.136劲松一区1194300.066420.40.00290.003521.477劲松五区808050.044922.30.00330.0032-3.048劲松八区814180.045222.30.00330.0032-3.049新兴里小区260000.014417.50.00410.0031-25.77实际耗电输热比期望值限值形成与1983年相比，设计耗电输热比分别下降3%～26%1983实际耗电输热比(EHRac)序号地点关东店团结湖一区建研院和平里七区采暖建筑面积46100m248642m234799m253529m2检测日期83/1/21-2283/1/22-2383/1/27-2883/1/28-2983/1/29-3083/12/1584/2/383/12/1483/12/1683/12/171实耗功率kW28.1628.1637.6837.6837.6814.114.120.820.820.82循环水量m3/s0.08890.09240.08930.0910.090.050.050.090.0870.0873供水温度℃51.451.152.349.951.649.771.943.846.146.54回水温度℃45.045.146.744.546.245.561.339.641.341.55供回水温差℃6.46.05.65.45.44.210.64.24.85.06实际供热量kWh/d570785561750168492974875621194478533665741894436397水泵日耗电量kWh/d675.8675.8904.3904.3904.3338.9338.9499.2499.2499.28EHRac0.01180.01220.01800.01830.0180.01600.00710.01360.01190.01141983实际耗电输热比与理论耗电输热比的比较（未折算）序号地点A∑LEHRthEHRacEHRac/EHRth(m2)(m)-工况-1工况-2工况-3工况-1工况-2工况-31建研院347997840.00280.01600.0071-5.712.53-2和平里七区535296060.00260.01360.01190.01145.274.614.433团结湖一区486425300.00250.01800.01830.01857.237.367.444关东店461006660.00270.01180.0122-4.464.57-实际耗电输热比期望值限值形成1983～1984（未折算）4小区的实际耗电输热比0.0071～0.0122分别是理论耗电输热比的2.53～7.44倍实际