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Energy-saving and carbon reduction analysis of series/parallel combination for heat pump and chiller in a hotel building
Energy and Buildings ( IF 6.6 ) Pub Date : 2024-11-08 , DOI: 10.1016/j.enbuild.2024.115022 Alya Penta Agharid, Indra Permana, Fujen Wang, Mingzhi Lee
Energy and Buildings ( IF 6.6 ) Pub Date : 2024-11-08 , DOI: 10.1016/j.enbuild.2024.115022 Alya Penta Agharid, Indra Permana, Fujen Wang, Mingzhi Lee
Taiwan is known for its hot and humid climate, where buildings rely on air conditioning systems to provide comfortable conditions. Specifically in commercial buildings such as hotels, apart from being required to provide comfortable indoor conditions, they need to provide hot water 24 h for guests, leading to the common application of chiller and heat pump systems in hotels. With the rise of the Taiwanese tourism industry, many hotels have been newly built or renovated. However, during the planning and construction stages, considerations may be limited by personnel experience, operational difficulties, installation costs, or the desire to simplify operations. This often results in the separate consideration of heat pump systems and chiller systems, leading to unnecessary resource and energy waste. Therefore, this study takes place at a hotel building in Taichung located in Central Taiwan. Designing a series/parallel system between the heat pump and chiller systems. Through a control system and a real-time recording system, controllable factors were analyzed, such as system equipment supply/return water temperature, outdoor relative and enthalpy, and occupancy rate change. Additionally, energy-saving potential was evaluated from the collected data through linear regression. The results show that when the outdoor air temperature, outdoor enthalpy, and occupancy rate are low, the parallel system is more energy-efficient due to the higher energy consumption of the chiller under low load conditions, which is suitable for winter. Conversely, the series system is more energy-efficient than under hot weather and high indoor load conditions, making it suitable for use in the summer.
更新日期：2024-11-08
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