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Chemical amplifier and energy utilization principles of heat conversion cycle systems

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  • Zheng, Danxing
  • Jing, Xuye

Abstract

A new concept, which is named as a chemical amplifier or CHC (chemical heat converter), was proposed to analyze the heat conversion cycle systems and its application in system innovation. This new concept primarily comprises a pair of reversible reactions, an endothermic and an exothermic reaction, which occur in the liquid–gas or solid–gas phase. By introducing the heat flux of high-temperature input and low-temperature output to meet the reactions, the CHC cycle produces two types of work capacities, wA* and wR*, which respectively employ the working fluid for the heat engine and the heat pump as carriers. These wok capacities can be used either separately or together when coupling with a heat engine sub-cycle and/or a heat pump sub-cycle, and the different heat conversion mechanisms in five kinds of heat conversion configurations were revealed using the proposed concept. And then to show a full application example of the CHC concept, an absorption power/cooling cogeneration cycle with working fluid difluoromethane and N,N-dimethylformamide was analyzed. This research exhibited that both the benefits of the increasing of expansion work in the heat engine sub-cycle and the reduction of work consumption for compression in the heat pump sub-cycle can be obtained through the work abilities output by the CHC which is driven by mid-low grade heat.

Suggested Citation

  • Zheng, Danxing & Jing, Xuye, 2013. "Chemical amplifier and energy utilization principles of heat conversion cycle systems," Energy, Elsevier, vol. 63(C), pages 180-188.
    • Handle: RePEc:eee:energy:v:63:y:2013:i:c:p:180-188
    DOI: 10.1016/j.energy.2013.10.020
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    Cited by:

    1. Chen, Yi & Han, Wei & Jin, Hongguang, 2015. "An absorption–compression refrigeration system driven by a mid-temperature heat source for low-temperature applications," Energy, Elsevier, vol. 91(C), pages 215-225.
    2. Zheng, Danxing & Wu, Zhaohui & Huang, Weijia & Chen, Youhui, 2017. "Energy quality factor of materials conversion and energy quality reference system," Applied Energy, Elsevier, vol. 185(P1), pages 768-778.
    3. Jiménez Álvaro, Ángel & Paniagua, Ignacio López & Fernández, Celina González & Carlier, Rafael Nieto & Martín, Javier Rodríguez, 2014. "Energetic analysis of a syngas-fueled chemical-looping combustion combined cycle with integration of carbon dioxide sequestration," Energy, Elsevier, vol. 76(C), pages 694-703.

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