Low grade thermal energy sources and uses from the process industry in the UK
Low grade thermal energy sources and uses from the process industry in the UK
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DOI：
10.1016/j.apenergy.2011.06.003
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发表时间：
2012-01-01
期刊：
影响因子：
11.2
通讯作者：
Roskilly, Anthony P.
中科院分区：
文献类型：
--
作者：
Ammar, Yasmine;Joyce, Sharon;Roskilly, Anthony P.
由于涉及高温和多个热密集型过程，过程工业中的热能损失是一个重要问题。高品位热能通常在工艺中回收。然而，低品位的热量往往被排放到环境中。捕获和利用低品位热能的好处在很大程度上取决于废物流中热量的质量和性质。低级热流的温度是最重要的参数，因为残余热量的有效利用或从低级热源回收能量的效率将主要取决于热源和合适的散热器（例如，另一过程或空间加热/冷却）之间的温差。在一般情况下，这些废热源的温度太低，产生电力和直接热利用将取决于是否可以找到潜在的用户。本文介绍了过去和现在的驱动程序热回收研究。根据工艺中回收的可行性定义高品位和低品位热源。首先，高品位的过程中的热量捕获进行了审查。然后，重点是原始工厂外部的低品位热量捕获的潜力。本文讨论了低品位热回收的潜力方面的新的激励措施和技术进步。最后，讨论了影响过程工业中低品位热回收决策的不同方面。它的结论是，组织，金融和经济的障碍可能会被克服，并从一个整体的愿景可以获得更强的政府政策和监管激励措施的好处。(C)2011爱思唯尔有限公司保留所有权利。
Thermal energy loss in the process industry is a significant issue due to the high temperatures and multiple heat intensive processes involved. High-grade thermal energy is typically recovered within processes. However, lower grade heat is often rejected to the environment.The benefits of capturing and utilising low grade thermal energy are highly dependent on the qualities and properties of the heat in the waste streams. The temperature of the low grade heat stream is the most important parameter, as the effective use of the residual heat or the efficiency of energy recovery from the low grade heat sources will mainly depend on the temperature difference between the source and a suitable sink, e.g. another process or space heating/cooling. In general, the temperatures of these waste heat sources are too low to produce electricity and direct heat use will depend on whether potential user can be found.This paper presents past and current drivers for heat recovery studies. High and low grade heat sources are defined according to the viability of recovery within the processes. Firstly, high grade heat capture within the processes is reviewed. Then, the focus is on the potential for low grade heat capture outside of the original plant. The paper addresses the potential for low grade heat recovery with regard to new incentives and technological advances. Finally, different aspects which influence the decision making for low grade heat recovery in the process industry are discussed. It is concluded that organisational, financial and economic barriers might be overcome and benefits from a holistic vision could be gained with stronger governmental policy and regulation incentives. (C) 2011 Elsevier Ltd. All rights reserved.