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Open AccessFeature PaperReview

Recent Developments in Coating Technologies for Adsorption Heat Pumps: A Review

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CNR–ITAE–Istituto di Tecnologie Avanzate per l’Energia “Nicola Giordano”, Salita S. Lucia sopra Contesse 5, 98126 Messina, Italy
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Department of Engineering, University of Messina, Contrada Di Dio, 98158 Messina, Italy
*
Author to whom correspondence should be addressed.
Coatings 2020, 10(9), 855; https://doi.org/10.3390/coatings10090855
Received: 10 August 2020 / Revised: 27 August 2020 / Accepted: 1 September 2020 / Published: 2 September 2020
The use of adsorbent heat pumps as heating and cooling systems is particularly relevant thanks to their ability to exploit low-grade heat (e.g., below 90 °C) from renewable energy sources and waste energy streams with prospective applications in several fields, e.g., industrial and residential. Their development began in the 20th century and is still in full evolution. The great interest in their improvement and optimization was determined by some key factors inherent to their sustainability compared to traditional refrigeration systems (e.g., low electricity consumption and the low environmental impact of the employed refrigerants). Recently, strong efforts have been dedicated to increasing the achievable heating/cooling power density of this technology through the development of innovative adsorbent coating technologies. Indeed, the deposition of thin coatings on the surface of the heat exchanger could reduce the heat transfer resistance existing on the adsorbent material side, thus increasing the overall adsorption dynamics. Three main approaches have been assessed, namely a thick consolidated bed, binder-based composite coatings and in situ directly crystallization coatings. This paper provides a brief overview of some of the main achievements related to adsorbent coating technology developments for adsorption heat pump applications. View Full-Text
Keywords: adsorption heat pump; coating; binder; in situ direct synthesis; heat and mass transfer adsorption heat pump; coating; binder; in situ direct synthesis; heat and mass transfer
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MDPI and ACS Style

Caprì, A.; Frazzica, A.; Calabrese, L. Recent Developments in Coating Technologies for Adsorption Heat Pumps: A Review. Coatings 2020, 10, 855. https://doi.org/10.3390/coatings10090855

AMA Style

Caprì A, Frazzica A, Calabrese L. Recent Developments in Coating Technologies for Adsorption Heat Pumps: A Review. Coatings. 2020; 10(9):855. https://doi.org/10.3390/coatings10090855

Chicago/Turabian Style

Caprì, Angela; Frazzica, Andrea; Calabrese, Luigi. 2020. "Recent Developments in Coating Technologies for Adsorption Heat Pumps: A Review" Coatings 10, no. 9: 855. https://doi.org/10.3390/coatings10090855

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