湿度对建筑空调系统设计及运行影响探讨
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摘要
以某动物实验中心全新风空调系统为例,分析其在设计阶段对湿度控制的考量,结合能耗模拟软件EnergyPlus,探究湿度对空调系统运行阶段的实际影响。对比模拟与实测值发现,达到设计要求的所需冷量比实测冷量大42%,说明实际运行未满足设计要求。进一步计算空调系统的输出显热比发现,在某些条件下,设备实际的输出显热比为0.374,大于设计所需的输出显热比0.355,从而导致室内实际参数偏离设计值。认为在设计阶段应考虑湿度的影响,尤其是设计潜热负荷占比较大的空调系统。
Taking the all outdoor air conditioning system of an animal experiment center as an example, analyses the consideration of humidity control in the design stage. Combining EnergyPlus, an energy consumption simulation software, explores the practical influence of humidity on the operating phase of an air conditioning system. By comparing the simulated and measured values, finds that the required cooling capacity to meet the design requirements is 42% higher than the measured cooling capacity, indicating that the actual operation fails to meet the design requirements. Further calculating the output sensible heat ratio of the air conditioning system, finds that the actual output sensible heat ratio of the equipment is 0.374 under some certain conditions, which is higher than the design sensible heat ratio of 0.355, resulting in the deviation of the actual indoor parameters from the design value. The influence of humidity should be considered in the design stage, especially at the high latent heat load.
Taking the all outdoor air conditioning system of an animal experiment center as an example, analyses the consideration of humidity control in the design stage. Combining EnergyPlus, an energy consumption simulation software, explores the practical influence of humidity on the operating phase of an air conditioning system. By comparing the simulated and measured values, finds that the required cooling capacity to meet the design requirements is 42% higher than the measured cooling capacity, indicating that the actual operation fails to meet the design requirements. Further calculating the output sensible heat ratio of the air conditioning system, finds that the actual output sensible heat ratio of the equipment is 0.374 under some certain conditions, which is higher than the design sensible heat ratio of 0.355, resulting in the deviation of the actual indoor parameters from the design value. The influence of humidity should be considered in the design stage, especially at the high latent heat load.
引文
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[9] 赛杨,刘昕晔,申东郁. 基于动态能耗模拟技术对大型动物实验室建筑的能耗分析[C]//第17届全国工程建设计算机应用大会,2014:274- 278
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[11] 殷平. 商业建筑空调设计方法[J]. 暖通空调,1994,24(3):3- 7
[12] 丁德,杨毅,曹志刚,等. 浙江大学动物实验中心空调设计[J]. 暖通空调,2013,43(9):19- 23,110
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[14] 冯晶琛,丁云飞,吴会军. EnergyPlus能耗模拟软件及其应用工具[J]. 建筑节能,2012,40(1):64- 67
[15] 朱丹丹,燕达,王闯,等. 建筑能耗模拟软件对比: DeST、EnergyPlus and DOE-2[J]. 建筑科学,2012,28(增刊2):213- 222
[16] WETTER M. Co-simulaton of building energy and control systems with the building controls virtual test bed[J]. Journal of Building Performance Simulation, 2011,4(3):185- 203
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[2] 程飞,张旭,张莉莉,等. 夏热冬冷地区住宅分体式空调容量需求分析[J]. 建筑科学,2016,32(8):154- 158
[3] 王振江,李祥立,端木琳,等. 城市规划阶段建筑空调负荷预测方法[J]. 暖通空调,2010,40(4):119- 124
[4] 余晓平,付祥钊. 夏热冬冷地区民用建筑除湿方式的适用性分析[J]. 建筑热能通风空调,2006,25(2):65- 69
[5] 王丽清,马天驰. SPF级实验动物设施净化空调的耗能与节能及运行管理[J]. 实验动物科学,2010,27(4):74- 76
[6] 梁坤峰,任岘乐,王振,等. 全新风对恒温恒湿空调能源供应的影响分析[J]. 发电与空调,2014(1):52- 57
[7] XU X, XIA L, CHAN M, et al. Inherent correlation between the total output cooling capacity and equipment sensible heat ratio of a direct expansion air conditioning system under variable-speed operation[J]. Applied Thermal Engineering,2010,30(13):1601- 1607
[8] 宋旭,朱彤,庄迪君,等. 空调表冷器降温除湿能力图[J]. 暖通空调,2015,45(1):38- 41
[9] 赛杨,刘昕晔,申东郁. 基于动态能耗模拟技术对大型动物实验室建筑的能耗分析[C]//第17届全国工程建设计算机应用大会,2014:274- 278
[10] 刘立喜. 动物实验室净化空调系统的节能运行[J]. 北京生物医学工程,2011,30(4):415- 416
[11] 殷平. 商业建筑空调设计方法[J]. 暖通空调,1994,24(3):3- 7
[12] 丁德,杨毅,曹志刚,等. 浙江大学动物实验中心空调设计[J]. 暖通空调,2013,43(9):19- 23,110
[13] 全国实验动物标准化技术委员会. 实验动物环境及设施:GB 14925—2001[S]. 北京:中国标准出版社,2001:3- 7
[14] 冯晶琛,丁云飞,吴会军. EnergyPlus能耗模拟软件及其应用工具[J]. 建筑节能,2012,40(1):64- 67
[15] 朱丹丹,燕达,王闯,等. 建筑能耗模拟软件对比: DeST、EnergyPlus and DOE-2[J]. 建筑科学,2012,28(增刊2):213- 222
[16] WETTER M. Co-simulaton of building energy and control systems with the building controls virtual test bed[J]. Journal of Building Performance Simulation, 2011,4(3):185- 203
[17] LI Z, XU X, DENG S, et al. Further study on the inherent operating characteristics of a variable speed direct expansion air conditioning system[J]. Applied Thermal Engineering, 2014,66(1/2):206- 215