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Start-up behaviour of a combined air-conditioning system in cooling and heating operating modes

机译：组合空调系统在制冷和制热运行模式下的启动行为

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摘要

The energy demand of the commercial building sector is largely for cooling and heating and will eventually result in energy and environmental crises; therefore, enhancing the performance of the cooling and heating systems used in buildings is paramount. In response to this need, focus was set on the gas engine driven heat pump-combined system (GHPC)-consisting of a gas engine, single-stage vapour compression system, and single-effect absorption system that saves more energy as compared to a conventional gas engine-driven heat pump. However, so far, only the performance and transient characteristics of a fabricated GHPC have been investigated. Therefore, to ascertain the characteristics of the GHPC start-up dynamics under unsteady state operations so as to achieve efficient and stable start-up operation, experiments and simulations were attempted in this study. The transient behaviour from the start-up of this combined system in cooling and heating operating modes was also scrutinized. Accordingly, it was found that simulation results agreed well with experimental data. It was concluded that there were no large delayed responses in the absorption system during start-up operation when start-up of the absorption system is considered based on the system cooling capacity response after the solution pump starts. (C) 2017 Elsevier B.V. All rights reserved.
机译：商业建筑部门的能源需求主要是制冷和供暖，最终将导致能源和环境危机。因此，提高建筑物中使用的制冷和供暖系统的性能至关重要。为满足这一需求，重点放在了由燃气发动机驱动的热泵组合系统（GHPC）上，该系统由燃气发动机，单级蒸气压缩系统和单效吸收系统组成，与传统的节能技术相比，可节省更多能源传统的燃气发动机驱动的热泵。然而，到目前为止，仅研究了制成的GHPC的性能和瞬态特性。因此，为确定GHPC在非稳态操作下的启动动力学特性，以实现高效，稳定的启动操作，本研究尝试进行了实验和仿真。还检查了该组合系统在制冷和制热运行模式下启动后的瞬态行为。因此，发现模拟结果与实验数据吻合良好。结论是，当溶液泵启动后根据系统冷却能力响应来考虑吸收系统的启动时，在启动操作期间吸收系统中没有较大的延迟响应。 （C）2017 Elsevier B.V.保留所有权利。

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