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Design optimization of heat exchangers utilizing shape-optimized, non-round tubes for a residential air-conditioning system using R290.

Number: 1241

Author(s) : MERUVA V. P., TANCABEL J., AUTE V.

Summary

Hydrocarbon (HC) refrigerants have emerged as promising replacements to hydrofluorocarbons due to their low GWP and promising thermophysical properties. This transition will require high-performance heat exchangers (HXs) with significant size, weight, cost, and refrigerant charge reductions compared to the current state-of-the-art to comply with flammable refrigerant charge limits. In this paper, an approximation-assisted optimization framework for HXs with shape-optimized, non-round tubes is utilized to optimize the condenser and the evaporator for a 10.55 kW (3-Ton) residential air-conditioning system using R290. Preliminary simulations show that the optimal HXs can achieve at least 20% reductions in airside pressure drop, envelope volume, and material volume along with more than 30% reduction in system refrigerant charge while maintaining or improving system performance. This study provides critical insights into the viability and advantages of using R290 in residential air-conditioning applications to help facilitate the adoption of flammable and mildly-flammable refrigerants.

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Pages: 9 p.

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Details

  • Original title: Design optimization of heat exchangers utilizing shape-optimized, non-round tubes for a residential air-conditioning system using R290.
  • Record ID : 30032741
  • Languages: English
  • Subject: HFCs alternatives
  • Source: 16th IIR-Gustav Lorentzen Conference on Natural Refrigerants (GL2024). Proceedings. University of Maryland, College Park, Maryland, USA, August 11-14 2024
  • Publication date: 2024/08
  • DOI: http://dx.doi.org/10.18462/iir.gl.2024.1241

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