Specific heat capacities of carbon-based adsorbents for adsorption heat pump application

Kutub Uddin, Md Amirul Islam, Sourav Mitra, Jong boong Lee, Thu Kyaw, Bidyut Baran Saha, Shigeru Koyama

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

Microporous adsorbents have been extensively employed in various sorption cycles. The specific heat capacity of such porous materials is an important parameter in adsorption simulation and system design. This article discusses the experimental evaluation of the specific heat capacities of several carbon-based adsorbents for cooling applications. The studied adsorbents include (i) parent Maxsorb III with different particle sizes, (ii) surface treated Maxsorb III (H2 and KOH-H2) (iii) recently developed spherical activated carbon (KOH treated phenol resin, KOH6-PR) and (iv) expanded graphite. The specific heat capacity of these materials is measured at temperatures ranging from 30 °C to 150 °C using a heat flux type differential scanning calorimeter (DSC). Within the experimental conditions, no phase transition or thermal anomaly is detected for all the adsorbents. Surface treated adsorbent exhibits higher specific heat capacities whilst KOH treated phenol resin (KOH6-PR) has the lowest value among the studied adsorbents. High specific heat capacities in the surface treated Maxsorb III might be attributed to the effect of surface treatment and the presence of surface functional group. The model given by Perry and Green is employed to fit the experimental data. These experimental data together with the fitted parameters are essential in the design and simulation of adsorption heat pump systems.

Original languageEnglish
Pages (from-to)117-126
Number of pages10
JournalApplied Thermal Engineering
Volume129
DOIs
Publication statusPublished - Jan 1 2018

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Adsorbents
Specific heat
Pumps
Adsorption
Carbon
Phenols
Resins
Hot Temperature
Heat pump systems
Calorimeters
Activated carbon
Functional groups
Porous materials
Surface treatment
Sorption
Heat flux
Graphite
Phase transitions
Systems analysis
Particle size

All Science Journal Classification (ASJC) codes

  • Energy Engineering and Power Technology
  • Industrial and Manufacturing Engineering

Cite this

Specific heat capacities of carbon-based adsorbents for adsorption heat pump application. / Uddin, Kutub; Amirul Islam, Md; Mitra, Sourav; Lee, Jong boong; Kyaw, Thu; Saha, Bidyut Baran; Koyama, Shigeru.

In: Applied Thermal Engineering, Vol. 129, 01.01.2018, p. 117-126.

Research output: Contribution to journalArticle

Uddin, Kutub ; Amirul Islam, Md ; Mitra, Sourav ; Lee, Jong boong ; Kyaw, Thu ; Saha, Bidyut Baran ; Koyama, Shigeru. / Specific heat capacities of carbon-based adsorbents for adsorption heat pump application. In: Applied Thermal Engineering. 2018 ; Vol. 129. pp. 117-126.
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