| 摘要: |
| 为了研究非标工况下水环热泵系统能耗规律，以循环水作为研究基础，依据建立的循环水能量方程，利用线性传递函数方法建立系统能耗方程。理论结果表明：系统能耗随负荷率变化呈非线性规律且冬季的影响更显著；受负荷率的影响系统能耗随循环水能量变化会出现畸变特征显著影响系统节能性。为了确定畸变工况点出现范围与持续时间，选取天津地区工程进行实验测试，利用循环水能级方法分析系统能耗变换规律。实验结果表明：针对此类建筑，畸变工况点出现在能级4~5范围内持续时间不超过系统总运行时间的10%；辅助热源容量按建筑热负荷55%选取将更具有合理性。 |
| 关键词: 水环热泵 非标准工况 循环水能量 线性传递函数 系统能耗 循环水能级方法 |
| DOI： |
| Received:September 12, 2012 |
| 基金项目:住房和城乡建设部研究开发项目（2011-K1-46）资助 |
|
| Research for Energy Consumption of Water-loop Heat Pump System Based on Circulating-water Energy Gap under Nonstandard Conditions |
|
Yu Qidong, Zhu Neng
|
| (School of Environmental Science and Engineering，Tianjin University) |
| Abstract: |
| In order to study the energy consumption law of water-loop heat pump system under nonstandard conditions, the circulating water was selected as the research foundation and on the basis of the circulating water energy equations, the system energy consumption equations were built by using a linear transfer function method. The theoretical results show that the change law is nonlinear between the system energy consumption and load rate, and it will more remarkable in winter; because the effect of load rate on the energy consumption, with the circulating water energy changing, the change law of system energy consumption will appear a distortion characteristic, which significantly affect system energy saving. In order to determine the range and lasting time of distortion condition point, an engineering was selected in Tianjin as the experiment object, and the test data was analyzed by energy gap method of circulating water. The experimental results show that for this building, the distortion condition point is in the range of 4~5 level, and its lasting time is less 10% of the total run time; the capacity of auxiliary heat source is reasonable with 55% of building heat load. |
| Key words: water-loop heat pump nonstandard condition circulating water energy linear transfer function energy consumption energy gap method of circulating water |
