Endre søk
RefereraExporteraLink to record
Permanent link

Direct link
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annet format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annet språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf
Exergetic efficiency of high-temperature-lift chemical heat pump (CHP) based on CaO/CO2 and CaO/H2O working pairs
KTH, Skolan för kemivetenskap (CHE), Kemiteknik.
KTH, Skolan för kemivetenskap (CHE), Kemiteknik, Kemisk apparatteknik.ORCID-id: 0000-0001-6801-9208
KTH, Skolan för kemivetenskap (CHE), Kemiteknik, Kemisk apparatteknik.
2013 (engelsk)Inngår i: International journal of energy research (Print), ISSN 0363-907X, E-ISSN 1099-114X, Vol. 37, nr 9, s. 1122-1131Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

The use of reversible chemical reactions in recuperation of heat has gained significant interest due to higher magnitude of reaction heat compared to that of the latent or sensible heat. To implement chemical reactions for upgrading heat, a chemical heat pump (CHP) may be used. A CHP uses a reversible chemical reaction where the forward and the reverse reactions take place at two different temperatures, thus allowing heat to be upgraded or degraded depending on the mode of operation. In this work, an exergetic efficiency model for a CHP operating in the temperature-level amplification mode has been developed. The first law and the exergetic efficiencies are compared for two working pairs, namely, CaO/CO2 and CaO/H2O for high-temperature high-lift CHPs. The exergetic efficiency increases for both working pairs with increase in task, TH, decrease in heat source, TM, and increase in condenser, TL, temperatures. It is also observed that the difference in reaction enthalpies and specific heats of the involving reactants affects the extent of increase or decrease in the exergetic efficiency of the CHP operating for temperature-level amplification.

sted, utgiver, år, opplag, sider
Wiley-Blackwell, 2013. Vol. 37, nr 9, s. 1122-1131
Emneord [en]
chemical heat pump (CHP), first law efficiency, second law (exergetic) efficiency, temperature amplification, heat transformer, CaO, CO2, H2O
HSV kategori
Identifikatorer
URN: urn:nbn:se:kth:diva-124964DOI: 10.1002/er.2918ISI: 000320386600012Scopus ID: 2-s2.0-84879228964OAI: oai:DiVA.org:kth-124964DiVA, id: diva2:638810
Merknad

QC 20130802

Tilgjengelig fra: 2013-08-02 Laget: 2013-08-02 Sist oppdatert: 2017-12-06bibliografisk kontrollert

Open Access i DiVA

Fulltekst mangler i DiVA

Andre lenker

Forlagets fulltekstScopus

Søk i DiVA

Av forfatter/redaktør
Arjmand, MehdiLiu, LongchengNeretnieks, Ivars
Av organisasjonen
I samme tidsskrift
International journal of energy research (Print)

Søk utenfor DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetric

doi
urn-nbn
Totalt: 588 treff
RefereraExporteraLink to record
Permanent link

Direct link
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annet format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annet språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf