基于全寿命周期的太阳能—地源热泵空调系统能耗分析与评价
发布时间：2018-07-31 08:39
【摘要】：针对北方寒冷地区冬季和夏季冷热需求不平衡的现象，本文以天津市一套太阳能-地源热泵联合供暖空调系统为研究对象，并与两套对比方案系统相比较，开展了空调系统全寿命周期能耗评价研究。 本文详细介绍了太阳能-地源热泵空调系统的组成设备和监测仪器，根据该系统一年半期间的实际运行数据，从集热效率、储热率、取热率、地温变化等方面，对太阳能跨季节储热系统的特性进行了评价，又分别对地源热泵（GSHP）系统和太阳能辅助地源热泵（SAGSHP）系统的制冷/供暖性能系数（COP）及各设备的能耗进行了分析。根据实际采暖季的供热量数据计算出建筑的耗热量指标为22.97W/m2，并分析了耗热量指标偏高的原因主要是室内温度过高和不注意行为节能而造成的。但从系统的耗能（只有电耗）折算到发电煤耗来计算，其耗煤量指标为6.28kg/m2，具有显著节能优势。 根据全寿命周期评价理论，采用实际调研、资料查阅等方法，得出了空调系统的物化能耗清单，系统设备生产、建设等过程中对一次能源（煤、油和天然气）的消耗量清单。 用TRNSYS模拟软件创建了太阳能-地源热泵空调系统及两套对比系统（冷水机组-燃气锅炉系统、地源热泵-电辅助加热系统）的仿真模型，在完成模型的验证后，预测了三种系统的寿命期内（30年）耗能总量。 最后，基于全寿命周期能耗评价理论，，对太阳能-地源热泵空调系统及两个对比方案的全寿命周期能耗和资源耗竭系数进行了对比评价，结果发现：太阳能-地源热泵空调系统比冷水机组-燃气锅炉系统和地源热泵-电辅助加热系统在全寿命周期内能耗分别低14.35%和15.40%，物化能占整个寿命周期能耗的比例分别为：14.4%、10.7%和10.9%；三种系统的全寿命周期资源耗竭系数比值为1：2.69：1.12。从全寿命周期能耗的角度对实际太阳能-地源热泵系统给予了合理评价，证明了该空调系统的节能性，为太阳能-地源热泵组合空调系统的推广应用提供了评价依据。
[Abstract]:In view of the imbalance of cold and heat demand in winter and summer in the cold region of northern China, this paper takes a solar and ground source heat pump combined heating and air conditioning system in Tianjin as the research object, and compares it with two sets of contrast schemes. The energy consumption evaluation of the whole life cycle of air conditioning system is carried out. This paper introduces the composition equipment and monitoring instrument of solar-ground source heat pump air conditioning system in detail. According to the actual operation data of the system during one and a half year, the heat collection efficiency, heat storage rate, heat recovery rate, ground temperature change and so on are discussed. The characteristics of solar energy transseasonal heat storage system are evaluated, and the refrigeration / heating performance coefficient (COP) of ground source heat pump (GSHP) system and solar assisted ground source heat pump (SAGSHP) system are analyzed respectively, and the energy consumption of each equipment is also analyzed. According to the heat supply data of actual heating season, the heat consumption index of buildings is 22.97 W / m ~ 2. It is analyzed that the high heat consumption index is mainly caused by high indoor temperature and energy saving by neglecting behavior. However, from the energy consumption of the system (only electricity consumption) to the coal consumption of power generation, the coal consumption index is 6.28 kg / m ~ (2), which has a remarkable advantage of energy saving. According to the theory of life cycle evaluation, the list of physical and chemical energy consumption of air conditioning system, the consumption list of primary energy (coal, oil and natural gas) in the process of production and construction of air conditioning system are obtained by means of actual investigation and data reference. The simulation model of solar-ground source heat pump air conditioning system and two contrast systems (chiller-gas boiler system, ground-source heat pump electric auxiliary heating system) was established by using TRNSYS simulation software. The total energy consumption over the lifetime (30 years) of the three systems is predicted. Finally, based on the whole life cycle energy consumption evaluation theory, the whole life cycle energy consumption and resource depletion coefficient of solar-ground source heat pump air conditioning system and two comparison schemes are compared and evaluated. The results show that the energy consumption of solar-ground source heat pump air conditioning system is 14.35% and 15.40% lower than that of chiller gas-fired boiler system and ground-source heat pump electric auxiliary heating system in the whole life cycle, respectively. The physical and chemical energy accounts for the energy consumption of the whole life cycle. The ratio is 10.7% and 10.9%, respectively. The ratio of the life-cycle resource depletion coefficient of the three systems is 1: 2.69: 1.12. A reasonable evaluation of the actual solar-ground source heat pump system is given from the point of view of life-cycle energy consumption, which proves the energy saving of the air-conditioning system, and provides an evaluation basis for the popularization and application of the solar-ground source heat pump combined air-conditioning system.
【学位授予单位】：河北工业大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TU831;TU111.195
本文编号：2155036
[Abstract]:In view of the imbalance of cold and heat demand in winter and summer in the cold region of northern China, this paper takes a solar and ground source heat pump combined heating and air conditioning system in Tianjin as the research object, and compares it with two sets of contrast schemes. The energy consumption evaluation of the whole life cycle of air conditioning system is carried out. This paper introduces the composition equipment and monitoring instrument of solar-ground source heat pump air conditioning system in detail. According to the actual operation data of the system during one and a half year, the heat collection efficiency, heat storage rate, heat recovery rate, ground temperature change and so on are discussed. The characteristics of solar energy transseasonal heat storage system are evaluated, and the refrigeration / heating performance coefficient (COP) of ground source heat pump (GSHP) system and solar assisted ground source heat pump (SAGSHP) system are analyzed respectively, and the energy consumption of each equipment is also analyzed. According to the heat supply data of actual heating season, the heat consumption index of buildings is 22.97 W / m ~ 2. It is analyzed that the high heat consumption index is mainly caused by high indoor temperature and energy saving by neglecting behavior. However, from the energy consumption of the system (only electricity consumption) to the coal consumption of power generation, the coal consumption index is 6.28 kg / m ~ (2), which has a remarkable advantage of energy saving. According to the theory of life cycle evaluation, the list of physical and chemical energy consumption of air conditioning system, the consumption list of primary energy (coal, oil and natural gas) in the process of production and construction of air conditioning system are obtained by means of actual investigation and data reference. The simulation model of solar-ground source heat pump air conditioning system and two contrast systems (chiller-gas boiler system, ground-source heat pump electric auxiliary heating system) was established by using TRNSYS simulation software. The total energy consumption over the lifetime (30 years) of the three systems is predicted. Finally, based on the whole life cycle energy consumption evaluation theory, the whole life cycle energy consumption and resource depletion coefficient of solar-ground source heat pump air conditioning system and two comparison schemes are compared and evaluated. The results show that the energy consumption of solar-ground source heat pump air conditioning system is 14.35% and 15.40% lower than that of chiller gas-fired boiler system and ground-source heat pump electric auxiliary heating system in the whole life cycle, respectively. The physical and chemical energy accounts for the energy consumption of the whole life cycle. The ratio is 10.7% and 10.9%, respectively. The ratio of the life-cycle resource depletion coefficient of the three systems is 1: 2.69: 1.12. A reasonable evaluation of the actual solar-ground source heat pump system is given from the point of view of life-cycle energy consumption, which proves the energy saving of the air-conditioning system, and provides an evaluation basis for the popularization and application of the solar-ground source heat pump combined air-conditioning system.
【学位授予单位】：河北工业大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TU831;TU111.195
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