du.sePublications
Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • chicago-author-date
  • chicago-note-bibliography
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Unified thermodynamic model to calculate COP of diverse sorption heat pump cycles: Adsorption, absorption, resorption, and multistep crystalline reactions
Dalarna University, School of Technology and Business Studies, Energy Technology. SaltX Technology; Mälardalens högskola. (Reesbe)
2019 (English)In: International journal of refrigeration, ISSN 0140-7007, E-ISSN 1879-2081, Vol. 99, p. 382-392Article in journal (Refereed) Published
Abstract [en]

A straightforward thermodynamic model is developed in this work to analyze the efficiency limit of diverse sorption systems. A method is presented to quantify the dead thermal mass of heat exchangers Solid and liquid sorbents based on chemisorption or physical adsorption are accommodated. Four possible single-effect configurations are considered: basic absorption or adsorption (separate desorber, absorber, condenser, and evaporator); separate condenser/evaporator (two identical sorbent-containing reactors with a condenser and a separate direct expansion evaporator); combined condenser/evaporator (one salt-containing reactor with a combined condenser/evaporator module); and resorption (two sorbent-containing reactors, each with a different sorbent). The analytical model was verified against an empirical heat and mass transfer model derived from component experimental results. It was then used to evaluate and determine the optimal design for an ammoniate salt-based solid/gas sorption heat pump for a space heating application. The effects on system performance were evaluated with respect to different working pairs, dead thermal mass factors, and system operating temperatures. The effect of reactor dead mass as well as heat recovery on system performance was also studied for each configuration. Based on the analysis in this work, an ammonia resorption cycle using LiCl/NaBr as the working pair was found to be the most suitable single-effect cycle for space heating applications. The maximum cycle heating coefficient of performance for the design conditions was 1.50 with 50% heat recovery and 1.34 without heat recovery.

Place, publisher, year, edition, pages
2019. Vol. 99, p. 382-392
Keywords [en]
Resorption, Ammonia, Sorption heat pump, Dead thermal mass, Analytical, Heat recovery
National Category
Energy Engineering
Research subject
Energy, Forests and Built Environments
Identifiers
URN: urn:nbn:se:du-29227DOI: 10.1016/j.ijrefrig.2018.12.021ISI: 000461334900038Scopus ID: 2-s2.0-85060929731OAI: oai:DiVA.org:du-29227DiVA, id: diva2:1274323
Funder
Knowledge FoundationAvailable from: 2018-12-29 Created: 2018-12-29 Last updated: 2019-03-28Bibliographically approved

Open Access in DiVA

The full text will be freely available from 2020-06-30 23:36
Available from 2020-06-30 23:36

Other links

Publisher's full textScopus

Authority records BETA

Blackman, Corey

Search in DiVA

By author/editor
Blackman, Corey
By organisation
Energy Technology
In the same journal
International journal of refrigeration
Energy Engineering

Search outside of DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetric score

doi
urn-nbn
Total: 214 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • chicago-author-date
  • chicago-note-bibliography
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf