地源热泵与水蓄冷复合系统的优化匹配及控制策略
发布时间：2019-02-11 13:20
【摘要】：能源为经济发展提供动力，但是由于各种因素，能源的发展滞后于经济的发展。近些年，中国国民生产总值在不断的增长，而能源的增长却是国民生产总值的1/3，这样的形势下就要求我们必须节能。社会总能耗中建筑能耗所占的比例较大，而暖通空调能耗是建筑能耗中的大户，所以空调系统节能是降低建筑能耗的关键。暖通空调的目的是为人们提供舒适的生活和生产室内环境，这需要消耗能源来实现，但是空调开启时间较集中且峰谷压力差巨大，这需要高效、合理的利用能源，切实有效的减少电网负荷压力差，同时也成为人们越来越关注的趋势。在这样的情况下，节能环保的地源热泵系统和水蓄能系统成为众学者研究和应用的对象，两者的优势结合必然能够达到很好节能且环保的效果。 本文选取武汉地区某一办公楼建筑为对象，利用DeST软件模拟建筑全年动态冷热负荷。以此类型建筑负荷特点和武汉地区电价结构为依据，通过选择蓄冷槽的大小，得到地源热泵与水蓄能槽的建筑负荷分配比。利用模拟软件模拟不同分配比热泵机组的性能特性，并对不同分配比的系统进行经济性分析，确定适合复合系统最优的负荷分配比例。 研究结果表明，地源热泵与水蓄能复合，，能够有效的缓解电网峰值供电压力，节约系统的运行费用。复合式系统能减少热泵主机的装机容量和地埋管长度。在各个方案热泵机组性能良好的基础下，通过经济性分析，能够得出最优的负荷分配比。 本文着重找出地源热泵结合水蓄能技术在办公建筑中所承担的负荷分配比，在何种比例下经济性最优，可以为其进一步的推广应用提供一定的参考。
[Abstract]:Energy provides power for economic development, but the development of energy lags behind economic development due to various factors. In recent years, China's gross national product has been growing, and the growth of energy is a third of its gross national product, which requires us to save energy. Building energy consumption accounts for a large proportion of total energy consumption in society, and HVAC energy consumption is a large household in building energy consumption, so energy saving of air conditioning system is the key to reduce building energy consumption. The purpose of HVAC is to provide people with comfortable living and production indoor environment, which needs to consume energy to achieve, but the opening time of HVAC is more concentrated and the pressure difference between peak and valley is huge, which requires efficient and rational use of energy. Effective reduction of power grid load pressure difference, but also become more and more concerned about the trend. In this case, the energy saving and environmental protection ground source heat pump system and the water energy storage system become the research and application object of many scholars, the combination of the advantages of the two is bound to achieve a very good energy saving and environmental protection effect. In this paper, a certain office building in Wuhan area is selected as the object, and the dynamic cooling and heat load of the building is simulated by DeST software. Based on the characteristics of this type of building load and the structure of electricity price in Wuhan area, the ratio of building load distribution between ground source heat pump and water storage tank is obtained by selecting the size of storage tank. The simulation software is used to simulate the performance characteristics of heat pump units with different distribution ratios, and the economic analysis of the systems with different distribution ratios is carried out to determine the optimal load distribution ratio for the composite system. The results show that the combination of ground-source heat pump and water storage can effectively relieve the peak power supply pressure and save the operating cost of the system. The composite system can reduce the installed capacity of heat pump mainframe and the length of buried pipe. On the basis of good performance of each scheme, the optimal load distribution ratio can be obtained by economic analysis. This paper focuses on finding out the load distribution ratio of ground-source heat pump combined with water storage technology in office buildings and the optimal economic ratio under which proportion, which can provide a certain reference for its further promotion and application.
【学位授予单位】：华中科技大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TU83
[Abstract]:Energy provides power for economic development, but the development of energy lags behind economic development due to various factors. In recent years, China's gross national product has been growing, and the growth of energy is a third of its gross national product, which requires us to save energy. Building energy consumption accounts for a large proportion of total energy consumption in society, and HVAC energy consumption is a large household in building energy consumption, so energy saving of air conditioning system is the key to reduce building energy consumption. The purpose of HVAC is to provide people with comfortable living and production indoor environment, which needs to consume energy to achieve, but the opening time of HVAC is more concentrated and the pressure difference between peak and valley is huge, which requires efficient and rational use of energy. Effective reduction of power grid load pressure difference, but also become more and more concerned about the trend. In this case, the energy saving and environmental protection ground source heat pump system and the water energy storage system become the research and application object of many scholars, the combination of the advantages of the two is bound to achieve a very good energy saving and environmental protection effect. In this paper, a certain office building in Wuhan area is selected as the object, and the dynamic cooling and heat load of the building is simulated by DeST software. Based on the characteristics of this type of building load and the structure of electricity price in Wuhan area, the ratio of building load distribution between ground source heat pump and water storage tank is obtained by selecting the size of storage tank. The simulation software is used to simulate the performance characteristics of heat pump units with different distribution ratios, and the economic analysis of the systems with different distribution ratios is carried out to determine the optimal load distribution ratio for the composite system. The results show that the combination of ground-source heat pump and water storage can effectively relieve the peak power supply pressure and save the operating cost of the system. The composite system can reduce the installed capacity of heat pump mainframe and the length of buried pipe. On the basis of good performance of each scheme, the optimal load distribution ratio can be obtained by economic analysis. This paper focuses on finding out the load distribution ratio of ground-source heat pump combined with water storage technology in office buildings and the optimal economic ratio under which proportion, which can provide a certain reference for its further promotion and application.
【学位授予单位】：华中科技大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TU83
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