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April 15, 2026EntropyOpen Access

Theoretical Research of a Transcritical Refrigeration System of CO2 Coupled with Liquid Desiccant Dehumidification Cycle Using Exergy Analysis Method

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Authors

XLXiao LiangYLYing LiuQFQiaolian Feng

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Overview

Theoretical research demonstrates improved cooling and dehumidification in air conditioning, suggesting eco-friendly solutions.

Key Points

  • To analyze a coupled CO2 transcritical refrigeration system with a liquid desiccant dehumidification cycle and assess its performance using exergy analysis.
  • Developed a thermodynamic model of the coupled system.
  • Conducted exergy analysis to evaluate performance metrics.
  • Examined effects of key parameters like discharge pressure and CO2 mass flow rate ratio in Evaporator II on performance.
  • Achieved an optimal COP of 4.32 at around 10,500 kPa discharge pressure.
  • Enhanced dehumidification capacity with a low specific dehumidification energy of 0.2033 kWh/kg.
  • Identified over 60% of exergy losses occurring in the CO2-solution heat exchanger and dehumidifier.
  • Maximum exergy efficiency of the system reached 12.4%, indicating potential for further improvement.

Cite This Study

Liang et al. (2026) studied this question.

synapsesocial.com/papers/69df2c2fe4eeef8a2a6b130fhttps://doi.org/10.3390/e28040436
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Also Consider

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