Heat pump dehumidifier drying of food

Conrad O. Perera*, M. Shafiur Rahman

*Corresponding author for this work

Research output: Contribution to journalReview articlepeer-review

125 Citations (Scopus)


Although heat pumps have been used extensively in industry for many years, their use for drying, especially foods, has been limited. This article reviews the potential of heat pump dehumidifier (HPD) dryers for use in food drying. HPD dryers offer several advantages over conventional hot-air dryers for the drying of food products, including higher energy efficiency, better product quality, and the ability to operate independently of outside ambient weather conditions. In addition, this technology is environmentally friendly in that gases and fumes are not given off into the atmosphere. The condensate can be recovered and disposed of in an appropriate manner, and there is also the potential to recover valuable volatiles from the condensate.

Original languageEnglish
Pages (from-to)75-79
Number of pages5
JournalTrends in Food Science and Technology
Issue number3
Publication statusPublished - Mar 1997
Externally publishedYes

ASJC Scopus subject areas

  • Biotechnology
  • Food Science


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