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Experimental study of an energy-efficient sorption-based clothes dryer.

Number: 2481

Author(s) : AHMADI M., AHMADI B., GLUESENKAMP K. R., NAWAZ K., BIGHAM S.

Summary

In most advanced thermal drying processes, a strong coupling between the sensible and latent heat loads results in a significant reduction in drying energy efficiency. The hot and humid air leaving the drum section carries both sensible and latent heat loads which are either exhausted to ambient or wasted during the low-temperature condensation process. This study proposes an energy-efficient sorption-based clothes dryer capable of recuperating both sensible and latent heat loads of the hot/humid air leaving the drum. The approach employs a hygroscopic desiccant cycle directly dehumidifying the outlet drum hot/humid air at high temperatures. This functionality allows converting the latent heat (i.e., humidity) to sensible heat load (i.e., temperature), thereby significantly improving the drying energy efficiency. Here, a well-equipped sorption-based system is developed and integrated into a commercial clothes dryer. The dehumidifier module of the system includes a textured dehumidifier surface offering a uniform liquid desiccant distribution on a polymeric surface. It also employs a desorber-condenser module to transfer the latent heat of the condensation process to the air entering the drum. The energy efficiency and drying time of the proposed sorption-based clothes drying system are analyzed at different sorption cycle working conditions under the DOE standard testing procedure. The experimental results showed a decrease in the drying time and an increase in the combined energy factor (CEF) with an increase in the desorption temperature. This study confirms the promise of the sorption-based heat pump drying concept for next-generation clothes dryer systems.

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Pages: 9 p.

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  • Original title: Experimental study of an energy-efficient sorption-based clothes dryer.
  • Record ID : 30030746
  • Languages: English
  • Subject: Technology
  • Source: 2022 Purdue Conferences. 19th International Refrigeration and Air-Conditioning Conference at Purdue.
  • Publication date: 2022

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