Performance study on a low-temperature absorption-compression cascade refrigeration system driven by low-grade heat

Yingjie Xu, Guangming Chen, Qin Wang, Xiaohong Han, Ning Jiang, Shiming Deng

Research output: Journal article publicationJournal articleAcademic researchpeer-review

16 Citations (Scopus)

Abstract

This paper presents a performance study on a low-temperature absorption-compression cascade refrigeration system (LACRS), which consists of an absorption subsystem (AS) and a vapor compression auto-cascade subsystem (CS). In the system, low-grade heat of AS is used to subcool the CS, which can obtain cold energy at -170 °C. A simulation study is carried out to investigate the effects of evaporating temperature and low-grade cooling capacity on system performance. The study results show that as low-grade cooling capacity from the AS is provided to the CS, high-grade cooling capacity increases, compressor power consumption decreases, and the COP of the CS therefore increases. Comparing with compression auto-cascade cycle, the largest COP improvement of LACRS is about 38%. The model is verified by experimental data. An additional high-grade cooling capacity is obtained experimentally at -170 °C. The study results presented in this paper not only demonstrate the excellent performance of the LACRS, but also provide important guidance to further system design, and practical application.
Original languageEnglish
Pages (from-to)379-388
Number of pages10
JournalEnergy Conversion and Management
Volume119
DOIs
Publication statusPublished - 1 Jul 2016

Keywords

  • Absorption-compression
  • Energy-saving
  • Low-grade heat
  • Low-temperature
  • Refrigeration

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Nuclear Energy and Engineering
  • Fuel Technology
  • Energy Engineering and Power Technology

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