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Feasibility of Combined Water-Source Heat Pump with Thermal Energy Storage in Multi-Family Dwellings 多户住宅水源热泵与蓄热相结合的可行性
住宅和商业建筑在能源消费领域发挥着重要作用。建筑物约占总能耗的30%以上[1],这一事实证明,政府和能源专家应优先考虑建筑物的能源管理。近几十年来,人们考虑将热泵与季节性热能储存相结合,以满足供暖和制冷需求。如上所述,实施季节性储能的显著优势在于满足能源需求季节和储能季节之间的不匹配。本研究的主要目的是基于通过实施水供应多户住宅空间供暖和制冷需求的概念- 源热泵,连接到一个埋地储水箱中。所考虑的季节性储罐为低温储罐(30°C,86°F),而非太阳能储罐。该项目的第一阶段包括在夏季通过采用管壳式换热器对储罐进行充注,通过管壳式换热器,来自制冷循环冷凝器的废热将被转移到二次流体(水)中,以便对储罐进行充注。储存的热量将在冬季使用,以满足热泵(排放)蒸发侧的供暖需求。通过在热泵和季节性储罐之间实施这种类型的组合,可以极大地弥补供热量和供热需求之间的不匹配。 这种组合的另一个显著优点是降低了压缩机的耗电量并提高了COP。在本研究中,高分辨率瞬态系统建模软件主要用于在瞬态模式下获得合理的结果。为了正确、公平地分析和评估,将结果和输出与暖通空调行业常用的传统系统进行比较。这里选择了空气源热泵,并对其进行了评估,以便将其与带季节性储罐的组合式热泵系统进行比较。引文:2017年冬季会议,内华达州拉斯维加斯,会议论文
Residential and commercial buildings play a significant role in energy consumption sector. Buildings account for approximately more than 30 percent of total energy consumption [1] and this fact proves that energy management in buildings should be prioritized among governments and energy experts. Combination of heat pumps with seasonal thermal energy storage in order to meet the heating and cooling demand has been considered in recent decades. As it mentioned above, significant advantage of implementing seasonal energy storage is to meet the mismatch between the energy demand season and energy storage season. The main aim of this research is based on the concept of supplying multi-family houses space heating and cooling demands by implementing water-source heat pump which is connected into a buried sensible seasonal storage tank. The considered seasonal storage tank is a low temperature tank (30 °C, 86° F) as opposed to a solarassisted type. First phase of the project is consisted of charging the tank during summer time by incorporating shell and tube heat exchangers by which the waste heat from the condenser of refrigeration cycle will be transferred to a secondary fluid (water) in order to charge the storage tank. The amount of stored heat will be used in winter time in order to supply the heating demand in evaporation side of the heat pump (discharging). By implementing this type of combination between heat pump and seasonal storage tank, the mismatch between heating generation and heating demand can be highly covered. The other remarkable advantage of this combination is the reduction in compressor electricity consumption and COP enhancement. In this research, a high-resolution transient system modeling software is mostly utilized to achieve reasonable results in transient mode. In order to analyze and assess properly and fairly, the results and outputs are compared to a conventional system which is commonly utilized in HVAC industry. Here an air-source heat pump has been chosen and assessed in order to compare it with the combined heat pump system with seasonal storage tank.
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