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Advances in Waste Heat Recovery

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Applied Thermal Engineering".

Deadline for manuscript submissions: closed (30 September 2022) | Viewed by 2858

Special Issue Editors


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Guest Editor
School of Electric Power, South China University of Technology, Guangzhou 510640, Guangdong, China
Interests: waste heat recovery; renewable energy; integrated energy system; CCHP; Organic Rankine Cycle; refrigeration

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Guest Editor
James Watt School of Engineering, University of Glasgow, Glasgow G12 8QQ, UK
Interests: heat pumps; refrigeration; energy storage; district heating/cooling networks
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

With increasingly stringent emission regulations, waste heat recovery (WHR) has been taken as one of the most potential ways to achieve environmental improvement by making better use of energy. Waste heat can be recovered using various technologies, such as heat-to-heat, heat-to-cooling and heat-to-power.

With the progress of thermodynamic simulation technology, the control strategies of complex thermodynamic systems are being developed, making the application of complex thermodynamic systems more competitive. The combination of prime movers with WHR devices, combined heat and power (CHP), and combined cooling, heat and power (CCHP) systems, etc. are attracting more attention since these solutions can offer substantial improvements in performance and cost reduction. Furthermore, they can be tailored to varying end-user requirements.

This Research Topic intends to present the latest research progress in waste heat recovery, including system design and performance optimization, system integration, and tests that focus on the most important theoretical and experimental developments, new applications of WHR, refrigeration and so on. Themes include but are not limited to:

  • Waste heat recovery;
  • ORC and supercritical ORC;
  • Refrigeration and heat pump;
  • Hardware components;
  • CCHP;
  • Renewable energy;
  • Integrated energy systems.

Prof. Dr. Youcai Liang
Prof. Dr. Zhibin Yu
Guest Editors

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Published Papers (1 paper)

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Research

17 pages, 6228 KiB  
Article
Flue Gas Condensation in a Model of the Heat Exchanger: The Effect of the Cooling Water Flow Rate and Its Temperature on Local Heat Transfer
by Robertas Poškas, Arūnas Sirvydas, Vladislavas Kulkovas, Povilas Poškas, Hussam Jouhara, Gintautas Miliauskas and Egidijus Puida
Appl. Sci. 2022, 12(24), 12650; https://doi.org/10.3390/app122412650 - 9 Dec 2022
Cited by 2 | Viewed by 2087
Abstract
In boiler houses, the biggest heat energy losses are caused by flue gas being released into the atmosphere. Installation of condensing heat exchangers allows reducing the temperature of the flue gas being released, condensation of water vapor, and, thus, efficient use of the [...] Read more.
In boiler houses, the biggest heat energy losses are caused by flue gas being released into the atmosphere. Installation of condensing heat exchangers allows reducing the temperature of the flue gas being released, condensation of water vapor, and, thus, efficient use of the waste heat. There are many investigations of average heat transfer in different types of condensing heat exchangers. They indicate also that the cooling water flow rate and its temperature are important parameters defining water vapor condensation efficiency. Investigations of local condensation heat transfer in condensing heat exchangers are very limited. Only recently experimental investigations of the flue gas temperature and Re number effect on local condensation heat transfer in the model of the condensing heat exchanger at a constant cooling water flow rate and its temperature have started being published. In this paper, for the first time, detailed experimental investigations of the cooling water flow rate and its temperature effect on local condensation heat transfer of the water vapor from the flue gas in the model of the condensing heat exchanger (long vertical tube) are presented. The results revealed that at higher flue gas Rein, the effect of the cooling water flow rate and its temperature has a stronger impact on local heat transfer distribution along the test section. Full article
(This article belongs to the Special Issue Advances in Waste Heat Recovery)
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