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中南大学学报(自然科学版)

Journal of Central South University

第48卷    第10期    总第278期    2017年10月

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文章编号:1672-7207(2017)10-2823-07
火积损失极值原理在热源塔热泵系统优化运行中的应用
林涛1,梁彩华1,郜骅1,2,张小松1

(1. 东南大学 能源与环境学院,江苏 南京,210096; 2. 浙江省建筑设计研究院,浙江 杭州,310006)

摘 要: 为优化热源塔热泵系统的运行,基于火积理论,提出热源塔热泵系统火积损失极值原理,并构建热源塔热泵系统火积损失模型。通过模拟和实验分别研究在定系统供热量和定系统输入功率时,系统在不同运行工况下的火积损失率,得出系统的最优运行工况。研究结果表明:系统火积损失率实验值与模拟值的相对误差不超过9.8%,表明系统火积损失模型具有较高的精度;当系统供热量为4 kW时,最优运行工况为压缩机频率51 Hz,热水流量0.5 kg/s,溶液流量0.6 kg/s,风量1.4 kg/s,此时系统火积损失率最大,系统输入功率最小,系统效率最高;当系统输入功率为2 kW时,最优运行工况为压缩机频率72 Hz,热水流量0.4 kg/s,溶液流量0.5 kg/s,风量1.6 kg/s,系统火积损失率最小,系统供热量最大,系统效率最高。

 

关键词: 热源塔热泵;优化运行;火积损失极值原理;火积损失模型;模拟与实验;系统效率

Application of extremum entransy loss principle in optimization operation of heat source tower heat pump system
LIN Tao1, LIANG Caihua1, GAO Hua1, 2, ZHANG Xiaosong1

1. College of Energy and Environment, Southeast University, Nanjing 210096, China; 2. Zhejiang Province Institute of Architectural Design and Research, Hangzhou 310006, China

Abstract:To optimize the operation of heat source tower heat pump, extremum entransy loss principle was proposed and entransy loss model was established for heat source tower heat pump system based on entransy theory. The system entransy loss rate was studied under different operation conditions for system heat load fixed or input power consumption fixed by means of simulation and experiment so as to get the optimization operation conditions. The results show that relative error of entransy loss rate values between simulation and experiment is less than 9.8% which proves that the model is adequately accurate. When system heat load is 4 kW, the optimization operation condition parameters are 51 Hz for compressor frequency, 0.5 kg/s for hot water flow rate, 0.6 kg/s for solution flow rate and 1.4 kg/s for air flow rate, which leads to the maximum system entransy loss rate, minimum system input power consumption and maximum system efficiency. When system input power consumption is 2 kW, the optimization operation condition parameters are 72 Hz for compressor frequency, 0.4 kg/s for hot water flow rate, 0.5 kg/s for solution flow rate and 1.6kg/s for air flow rate, which leads to the minimum system entransy loss rate, maximum system heat load and maximum system efficiency.

 

Key words: heat source tower heat pump; optimization operation; extremum entransy loss principle; entransy loss model; simulation and experiment; system efficiency

中南大学学报(自然科学版)
  ISSN 1672-7207
CN 43-1426/N
ZDXZAC
中南大学学报(英文版)
  ISSN 2095-2899
CN 43-1516/TB
JCSTFT
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