分析空冷间接燃烧GAX吸收式冷却器在部分负载运行中的内部热回收能力
María Esther Palacios-Lorenzo1, José Daniel Marcos1
1Energy Engineering Department, UNED, Juan Del Rosal 12, 28040, Madrid, Spain.
Heliyon
|February 15, 2024
概括
这项研究研究了高热升降时基于GAX的吸收冷却器的热回收. 调节门压力下降通过减少净化过程来提高性能,尽管发电机负载略有增加.
科学领域:
- 热力学是一种热力学.
- 机械工程 机械工程
- 能源系统 能源系统
背景情况:
- 单效吸收式冷却器具有成本效益,但性能系数 (COP) 较低.
- 基于GAX的AirCooled吸收冷却器通过在低热升降时的内部热回收提供了更好的COP.
- 研究高热升降性能对于扩大其应用范围至关重要.
研究的目的:
- 分析高热升降时基于GAX的吸收式冷却器的热回收能力.
- 为了评估调整额外门的压力下降对系统性能的影响.
- 在不同的操作条件下,评估系统内的能量破坏.
主要方法:
- 为冷却器组件开发和分析一个完整的微分数学模型.
- 模拟供热和回收过程的模拟.
- 彻底评估整个吸收制冷系统的能量破坏.
主要成果:
- 增加压力下降 (ΔP) 从175到700kPa,蒸汽净化减少了13.7% (蒸) 和70.6% (整流器).
- 尽管降低了冷却能力,蒸柱避免了哭泣模式;发电机负载增加了26.9%.
- 溶液冷却吸收器中的制冷剂流量减少了21.3%,双相流量是 ΔP 的实际上限.
结论:
- 修改后的基于GAX的循环可以通过调整门压力下降来有效地在高热升高时运行.
- 由于蒸汽净化系统,热回收循环对总能量破坏的贡献略有增加 (2.7%).
- 通过管理特定的零下应用的压力下降来优化系统性能是可能的.
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