First results of a coated heat exchanger for the use in dehumidification and cooling processes

Munz, Gunther; Bongs, Constanze; Morgenstern, Alexander; Lehmann, Sebastian; Kummer, Harry; Henning, Hans–Martin; Henninger, Stefan K.

doi:10.1016/j.applthermaleng.2013.08.041

Cited by 32 publications

(7 citation statements)

References 9 publications

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“…Jaeschke and Wolf [16] propose to glue a single layer of silica gel onto the surface of a finned-tube heat exchanger, whereas Freni et al [17] report an increase by a factor of 10 to 20 in power density for a binder-based coating with the silica gel/calcium chloride composite material SWS-1L onto finned tubes compared to a granular bed. Other binder-based coatings show similar behavior [18,19].…”

Section: Introductionmentioning

confidence: 55%

A New Adsorbent Composite Material Based on Metal Fiber Technology and Its Application in Adsorption Heat Exchangers

et al. 2015

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Abstract:In order to achieve process intensification for adsorption chillers and heat pumps, a new composite material was developed based on sintered aluminum fibers from a melt-extraction process and a dense layer of silico-aluminophosphate (SAPO-34) on the fiber surfaces. The SAPO-34 layer was obtained through a partial support transformation (PST) process. Preparation of a composite sample is described and its characteristic pore size distribution and heat conductivity are presented. Water adsorption data obtained under conditions of a large pressure jump are given. In the next step, preparation of the composite was scaled up to larger samples which were fixed on a small adsorption heat exchanger. Adsorption measurements on this heat exchanger element that confirm the achieved process intensification are presented. The specific cooling power for the adsorption step per volume of composite is found to exceed 500 kW/m 3 under specified conditions. OPEN ACCESSEnergies 2015, 8 8432

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Section: Introductionmentioning

confidence: 55%

A New Adsorbent Composite Material Based on Metal Fiber Technology and Its Application in Adsorption Heat Exchangers

et al. 2015

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“…In letzter Zeit werden hierfür vermehrt Wärmeübertrager eingesetzt, die mit Adsorbens beschichtet sind , . Diese können über einen Fluidkreislauf direkt gekühlt und erhitzt werden, um einerseits die Adsorption isotherm zu halten, andererseits aber die Desorption des Materials durchführen zu können, ohne die Luft vorzuheizen.…”

Section: Stand Der Forschungunclassified

Adsorbents for Dehumidification, Cooling, and Water Harvesting

Ernst

Baumgartner

Fröhlich

et al. 2017

Chemie Ingenieur Technik

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Wasseradsorption an porösen Materialien bietet Möglichkeiten, das gesteigerte Komfortbedürfnis der Menschheit zu adressieren: Sorptionsgestützte Klimatisierung, Entfeuchtung und Wassergewinnung aus der Umgebungsluft. In vorliegender Arbeit werden drei neuartige Adsorbentien, die zwei MOFs Aluminium-Fumarat und CAU-10-H, sowie ein PMO mit Blick auf die Anwendung charakterisiert. Die maximale Wasserbeladung der Materialien liegt zwischen 0,35 und 0,52 g g -1 .Für verschiedene Anwendungen wurde der Umsatz berechnet und in einem Eigenaufbau die Stabilität der Materialien über 300 Zyklen untersucht.Water adsorption on porous materials offers opportunities to address the increased comfort needs of mankind: sorptionassisted air-conditioning, dehumidification, and water extraction from ambient air. In the present work, three novel adsorbents, two MOFs aluminum fumarate and CAU-10-H, as well as a PMO with regard to the application are characterized. The maximum water loading of the materials is between 0.35 and 0.52 g g -1 . The water exchange was calculated for various applications and the stability of the materials was investigated in a self-assembled test setup over 300 cycles.Abbildung 7. Darstellung der Adsorptionsenthalpien fü r die betrachteten Materialien. Berechnet aus dem wDSL-Ansatz (durchgezogene bzw. gepunktete Linien) und nach Dubinin-Astakhov (gestrichelte Linien).Abbildung 8. Wä hrend der Zyklierung maximal erreichte Beladung der Adsorbentien aufgetragen ü ber der Zyklenzahl.

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“…This novel heat exchanger helps to well control temperature and humidity and save energy. Munz et al [18] presented a novel dehumidification and cooling system driven by solar energy. Its essential part was the silica gel coated heat exchanger.…”

Section: Introductionmentioning

confidence: 99%

Preparation and performance of desiccant coating with modified ion exchange resin on finned tube heat exchanger

Fang

Zuo

Liang

et al. 2016

Applied Thermal Engineering

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First results of a coated heat exchanger for the use in dehumidification and cooling processes

Cited by 32 publications

References 9 publications

A New Adsorbent Composite Material Based on Metal Fiber Technology and Its Application in Adsorption Heat Exchangers

A New Adsorbent Composite Material Based on Metal Fiber Technology and Its Application in Adsorption Heat Exchangers

Adsorbents for Dehumidification, Cooling, and Water Harvesting

Preparation and performance of desiccant coating with modified ion exchange resin on finned tube heat exchanger

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