Model of adsorption heat pump – Dubinin-Astakhov and Toth adsorption equilibrium comparison
author:
KATARZYNA ZWARYCZ-MAKLES
ORCID ID:
0000-0002-3738-9596
No:
7/2020 Instal p. 06-12
DOI:
10.36119/15.2020.7.1
In the presented paper the adsorber analytical modeling results based on Dubinin-Astakhov adsorption equilibrium
and Toth adsorption equilibrium of water vapour on silica gel were compared. The adsorption heat pump with
silica gel adsorbent and water adsorbate was discussed. A conventional single stage cycle adsorption heat pump
is modeled. The design of the adsorber/desorber considered element is the tube with deposited silica gel bed.
The analytical model was created to describe the temperature and concentration changes in the adsorber/desorber
and consequently to describe the performance of the adsorption heat pump. The mathematical model was solved
using common spreadsheet. A considerable increase in the calculated SHP and SCP in the model based on the Toth
equilibrium equation as well as slight increase in the heat supplied or released from adsorbent influenced the
increase in the COP.
Keywords:
About Authors:
dr hab. inż. Katarzyna Zwarycz-Makles – https://orcid.org/0000-0002-3738-9596, Katedra Ogrzewnictwa, Wentylacji i Ciepłownictwa,
Wydział Budownictwa i Architektury, Zachodniopomorski Uniwersytet Technologiczny w Szczecinie, Corresponding author: Katarzyna.Zwarycz-Makles@zut.edu.pl