Combined ORC-HP thermodynamic cycles for DC cooling and waste heat recovery for central heating
Combined ORC-HP thermodynamic cycles for DC cooling and waste heat recovery for central heating
复制标题
用于直流冷却的组合 ORC-HP 热力循环和用于中央供暖的废热回收
DOI：
10.1016/j.egypro.2019.01.471
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发表时间：
2019
期刊：
影响因子：
--
通讯作者：
Jawad Al-Tameemi M
中科院分区：
文献类型：
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作者：
Jawad Al-Tameemi M
数据中心是现代生活的重要组成部分，预计在未来几年内容量和规模都将增加。该部门的运行和基本冷却设施消耗了很大一部分电力。预计这种消耗量将随着需求的增加而增加，这可能导致更多的二氧化碳排放。废热是直流运行不可避免的副产品，具有可持续、低成本和环境友好的热源潜力。在本文中，我们提出了一种新的系统，集成了三个热力循环，包括ORC，HP和燃气燃烧器。该系统的目的是提供冷却的DC以及利用废热供应热水的集中供暖。结果表明，该系统通过吸收12 kW的热量将水温从50 ℃提高到80 ℃，可将室内室温维持在18- 25 ℃之间。此外，该系统可以实现141.8%的整体燃料热效率。因此，利用这种系统可以具有改善DC性能以及通过废热回收提供可用能量的巨大潜力。
Data center is an essential part of modern life that is predicted to increase both in capacity and size over the coming years. This sector consumes a significant proportion of electricity for its operation and for the essential cooling facilities. This consumption is expected to rise with increasing demands which can result in more CO2emission. Waste heat is an inevitable by-product of DC operation with a potential of being sustainable, low cost and environmentally friendly heat source. In this paper, we proposed a novel system that integrates three thermodynamic cycles including an ORC, a HP and a Gas burner. The aim of this system is to provide cooling for the DC as well as to utilize the rejected heat to supply hot water for central heating. The results show that this system can maintain the indoor room temperature between 18-25oC by absorbing 12 kW of heat to increase water temperature from 50 to 80oC. In addition, the system can achieve an overall fuel-to-heat efficiency of 141.8%. Therefore, utilizing such system can have a great potential of improving DC performance as well as providing usable energy by waste heat recovery.