在太阳能热吸收冷却系统中,二氧化碳作为制冷剂的复活
Saad Dilshad1, Naeem Abas2, Qadeer Ul Hasan1
1Department of Electrical and Computer Engineering, COMSATS University, Islamabad, Pakistan.
Heliyon
|July 14, 2023
概括
这项研究模拟了太阳能辅助的二氧化碳吸收冷却器,用于冷却巴基斯坦拉合尔的一所住宅. 该系统使用自然制冷剂R-744,为传统空调提供可持续的替代方案.
科学领域:
- 可再生能源系统可再生能源系统
- 热力学是一种热力学.
- 可持续的冷却技术 可持续的冷却技术
背景情况:
- 传统的空调系统对温室气体 (GHG) 排放有很大贡献,并依赖有害的合成制冷剂.
- 像巴黎协定这样的全球协议需要转向低全球变暖潜力 (GWP) 的制冷剂和可持续的能源解决方案.
- 由于高压技术的进步及其有利的热力学特性,二氧化碳 (CO2) 或R-744正在成为一种可行的天然制冷剂.
研究的目的:
- 模拟和评估一个拟议的太阳能辅助吸收冷却系统的热性能,用于巴基斯坦拉合尔的一座商业住宅.
- 评估使用二氧化碳 (CO2) 作为自然制冷剂在太阳能热冷却应用中的可行性.
- 研究太阳能与热储的整合,以解决太阳能的间歇性问题.
主要方法:
- 使用TRNSYS®软件对35.2千瓦的吸收冷却系统进行动态模拟.
- 集成太阳能疏散玻璃管采集器 (EGTC) 与U形铜管用于收集热量.
- 包括一个热储和沉浸式换热器,以管理太阳能间歇性.
- 对巴基斯坦拉合尔的一个大型三房住宅进行模拟,拉合尔是一个炎热潮湿的气候地区.
主要成果:
- 模拟系统成功满足了拉合尔三房住宅的冷却需求.
- 全年实现了0.21的太阳能分数,这表明该系统从太阳能中获得的贡献.
- 该系统在三个房间中保持了23°C,26°C和21°C的平均年室内温度.
结论:
- 拟议的使用二氧化碳 (R-744) 的太阳能辅助吸收冷却器证明了在炎热的气候下居住的可行和可持续的冷却解决方案.
- 像太阳能这样的可再生能源的整合对于减轻能源危机和气候变化影响至关重要.
- 该系统的设计,包括热储,有效地应对太阳能间歇性的挑战.
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