Refrigerant selection for a heat pump tumble dryer / L. Novak, J. Schnotale, M. Zgliczynski, A. Flaga-Maryanczyk // W: 23rd IIR International Congress of Refrigeration : Refrigeration for Sustainable Development ... więcej

Refrigerant selection for a heat pump tumble dryer / L. Novak, J. Schnotale, M. Zgliczynski, A. Flaga-Maryanczyk // W: 23rd IIR International Congress of Refrigeration : Refrigeration for Sustainable Development : proceedings, Prague, Czech Republic, August 21-26, 2011 = 23e Congrès International du Froid de l'IIF : Le froid pour le dèveloppment durable [Dokument elektroniczny]. – Paris : International Institute of Refrigeration, 2011. – Dysk optyczny CD. – (Proceedings of the 23rd IIR International Congress of Refrigeration, ISSN 1025-9031 ; 23). – 8 s. – Oznaczenie ref./art.: 774. – Bibliogr. 3 poz. – ISBN 978-2-913149-88-5 (CD). – ISBN 978-1-61839-748-5 (print). – ISBN 978-2-913-149-89-2 (USB)

A heat pump system for a tumble dryer can be an energy efficient alternative that also avoids emissions of dump air from the drying equipment. In this system load is dried by closed loop circulating air, ... więcej

A heat pump system for a tumble dryer can be an energy efficient alternative that also avoids emissions of dump air from the drying equipment. In this system load is dried by closed loop circulating air, treated in the heat pump. The refrigeration capacity of the heat pump is used to dehumidify moistened air while the heating capacity is used to reheat the cooled dry air. The critical decision for such a system is selection of a proper refrigerant that would be environmentally sound, provide optimal operational conditions and make the product more attractive for customers. Selection presented in the paper includes refrigerants that can be used in a standard subcritical cycle as well as carbon dioxide (CO2), with the trans-critical cycle, in which high refrigerant temperature at the gas cooler inlet represents an advantage in a tumble dryer. The paper presents cycle simulations of a heat pump tumble dryer operating with different refrigerants along with heat exchangers characteristics. Preliminary data from laboratory measurements of a heat pump dryer are also presented and discussed.