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Investigation of a system model on a compact and efficient novel dual-module membrane dehumidification heat pump cycle for industrial drying.

Number: 2511

Author(s) : REN J., THOMPSON M., WARSINGER D. M., ZIVIANI D.

Summary

As the global energy landscape pivots towards electrification, the potential of heat pumps to replace conventional fossil-fueled thermal processes is gaining prominence. Among industrial drying methods, convective drying stands out, accounting for 85% of processes yet suffering from significant energy inefficiencies due to the high thermal loads needed for condensing water vapor from air streams. Recognizing this, an energy-efficient alternative with a novel cycle design is proposed as a heat pump system integrated with dual-module water vapor permeable membranes for dehumidification, termed the MemDry system. This innovative system operates in two modes - passive and active - allowing for flexible adaptation to varying environmental conditions. The active modules, with the primary goal in creating a vapor partial pressure differential, augments the dehumidification process when passive methods are insufficient. While preliminary performance estimates and studies exist for similar systems, a detailed and comprehensive model of such a system and specifically its membrane components remain unexplored. This paper presents a multi-functional system model designed to simulate the steady-state operation of the novel system, particularly focusing on its active operating mode. The performance is also compared with a conventional heat pump system and parametric studies are conducted to delineate the optimal conditions for utilizing active or passive membrane modules. The simulation results yielded to a 34% to 54% energy savings, SMER improvement of 55% to 118%, while also resulting in a reduction in the heating capacity of the condenser by 70% to 86%.

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  • Original title: Investigation of a system model on a compact and efficient novel dual-module membrane dehumidification heat pump cycle for industrial drying.
  • Record ID : 30033017
  • Languages: English
  • Subject: Technology
  • Source: 2024 Purdue Conferences. 20th International Refrigeration and Air-Conditioning Conference at Purdue.
  • Publication date: 2024/07/17

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