Experimental investigation of silica gel and zeolite coated fin-tube heat exchangers under arid climatic conditions

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21720%2F22%3A00359087" target="_blank" >RIV/68407700:21720/22:00359087 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1016/j.egyr.2022.06.115" target="_blank" >https://doi.org/10.1016/j.egyr.2022.06.115</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.egyr.2022.06.115" target="_blank" >10.1016/j.egyr.2022.06.115</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Experimental investigation of silica gel and zeolite coated fin-tube heat exchangers under arid climatic conditions

Popis výsledku v původním jazyce

In this paper, a novel concept of an atmospheric water generator (AWG) based on desiccant coated heat exchangers (DCHEs) is presented. Two silica gel coated heat exchangers (SGCHEs) and two zeolite coated heat exchangers (ZCHEs) were prepared by coating a desiccant material on the surface of a conventional air-to-water fin-tube heat exchanger. An experimental set-up was built to investigate the performance characteristics of the prepared DCHEs in terms of the moisture removal capacity MRC, the effective duration of the process , and the total moisture mass transferred during the dehumidification/regeneration cycle MT. The influence of the regeneration hot-water temperature on the performance characteristics was also analysed. The experimental results showed that ZCHEs have better performance characteristics under arid climatic conditions than SGCHEs. It was found that the ZCHEs have approximately four times higher value of the moisture transferred during the dehumidification/generation cycle MT compared to the SGCHEs, 10.15 g for the ZCHEs and 2.60 g for the SGCHEs. Moreover, it can be concluded that the influence of the regeneration water temperature for ZCHEs is not as critical as for SGCHEs. The experimental results indicated that when the regeneration hot-water temperature decreases from 85 °C to 65 °C, the moisture transferred during the dehumidification/regeneration cycle MT for the ZCHEs decreases from 10.15 g to 7.11 g representing a 30% decrease in the system performance, while for the SGCHEs the same decrease in the regeneration hot-water temperature causes a significant decrease in the moisture mass transferred during the cycle MT from 2.60 g to 0.85 g, representing a 67% decrease in the system performance.

Název v anglickém jazyce

Experimental investigation of silica gel and zeolite coated fin-tube heat exchangers under arid climatic conditions

Popis výsledku anglicky

In this paper, a novel concept of an atmospheric water generator (AWG) based on desiccant coated heat exchangers (DCHEs) is presented. Two silica gel coated heat exchangers (SGCHEs) and two zeolite coated heat exchangers (ZCHEs) were prepared by coating a desiccant material on the surface of a conventional air-to-water fin-tube heat exchanger. An experimental set-up was built to investigate the performance characteristics of the prepared DCHEs in terms of the moisture removal capacity MRC, the effective duration of the process , and the total moisture mass transferred during the dehumidification/regeneration cycle MT. The influence of the regeneration hot-water temperature on the performance characteristics was also analysed. The experimental results showed that ZCHEs have better performance characteristics under arid climatic conditions than SGCHEs. It was found that the ZCHEs have approximately four times higher value of the moisture transferred during the dehumidification/generation cycle MT compared to the SGCHEs, 10.15 g for the ZCHEs and 2.60 g for the SGCHEs. Moreover, it can be concluded that the influence of the regeneration water temperature for ZCHEs is not as critical as for SGCHEs. The experimental results indicated that when the regeneration hot-water temperature decreases from 85 °C to 65 °C, the moisture transferred during the dehumidification/regeneration cycle MT for the ZCHEs decreases from 10.15 g to 7.11 g representing a 30% decrease in the system performance, while for the SGCHEs the same decrease in the regeneration hot-water temperature causes a significant decrease in the moisture mass transferred during the cycle MT from 2.60 g to 0.85 g, representing a 67% decrease in the system performance.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20704 - Energy and fuels

Projekt

—

Návaznosti

O - Projekt operacniho programu

Rok uplatnění

2022

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Energy Reports

ISSN

2352-4847

e-ISSN

2352-4847

Svazek periodika

8

Číslo periodika v rámci svazku

9

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

11

Strana od-do

331-341

Kód UT WoS článku

000824053600029

EID výsledku v databázi Scopus

2-s2.0-85134586309