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Primernost reakcije magnezijevega oksida z vodo za uporabo v kemičnem hranilniku toplote
Kato, Yukitaka (Author), Cerkvenik, Boštjan (Author), Mirakami, Atsushi (Author), Yoshizawa, Yoshio (Author)

URLURL - Presentation file, Visit http://www.dlib.si/details/URN:NBN:SI:doc-58PYHM27 This link opens in a new window

Abstract
Zaradi velikih gostot energije lahko kemične toplotne črpalke uporabimo tudi kot hranilnike toplote. Z uporabo povračljivih kemičnih reakcij, s krmiljenjem toka tekočine, ki reagira, lahko toploto shranimo in sproščamo glede na zunanje potrebe. V primeru zadovoljive ponovljivosti lahko kemične reakcije uporabimo v hranilnikih toplote, ki se lahko vključijo v sedanje kogeneracijske sisteme. Z uporabo kemične toplotne črpalke lahko uravnotežimo obremenitev kogeneracijskih sistemov.Odvečno toploto v času manjšega odjema toplote s kemično reakcijo shranimo v hranilniku v času kemičnih obremenitev pa jo sprostimo s povratno reakcijo. V tem prispevku je govor o izvedljivosti kemične toplotne črpalke, ki uporablja reakcijo magnezijevega oksida z vodo. V tem primeru lahko med reakcijo dehidracije magnezijevega hidroksida toploto shranimo pri temperaturi 300 C do 400 C ali jo med hidracijo magnezijevega oksida oddamo pri temperaturi 100 C do 200 C.Da bi preverili uporabnost magnezijevega hidroksida kot reakcijskega sredstva za toplotne črpalke smo eksperimentalno izvedli reakcijski postopek v območju tlakov med 30 kPa in 208kPa. .....

Language:Slovenian
Work type:Not categorized (r6)
Tipology:1.01 - Original Scientific Article
Organization:FS - Faculty of Mechanical Engineering
Year:2002
Publisher:Association of Mechanical Engineers and Technicians of Slovenia et al.
Number of pages:str. 194-209
Numbering:Letn. 48, št. 4
UDC:621.577:546.46.54.31:536.66:662.995
ISSN on article:0039-2480
COBISS.SI-ID:5394459 Link is opened in a new window
Views:612
Downloads:117
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Record is a part of a journal

Title:Strojniški vestnik
Shortened title:Stroj. vestn.
Publisher:Zveza strojnih inženirjev in tehnikov Slovenije [et al.], = Association of Mechanical Engineers and Technicians of Slovenia [et al.]
ISSN:0039-2480
COBISS.SI-ID:762116 This link opens in a new window

Secondary language

Language:English
Title:The suitability of magnesium oxide and water for use in chemical heat storage
Abstract:
Because of their high energy density, chemical heat pumps are an interesting possibility for heat storage. With reversible chemical reactions the heat can be stored or released on demand by controlling the flow of the reactive fluid.If they prove to have satisfactiry repeability, the reversible reactions can also be used in a heat storage system for cogeneration systems. In this way it would be possible to even out the load of the cogeneration system: in a period of low heat demand the surplus heat is stored with the chemical reaction in the heat storage and during a peak load period it can be released with the reverse reaction. In this paper we discuss the operation of a chemical heat pump that uses the reaction between magnesium oxide and water.In this case the heat can be stored with a dehydration process at about 300-400 C and released with a hydration process at about 100-200 C. In order to test the potential of magnesium hydroxide as a reactive medium for heat pumps we performed reaction experiments over a range of operations pressures between 30 kPa and 203 kPa. .......

Keywords:chemical heat pumps, heat storage, magesium oxide, cogeneration

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