liu.seSearch for publications in DiVA
Change search
ReferencesLink to record
Permanent link

Direct link
Inventering av värmelager för kraftvärmesystem
Linköping University, Department of Mechanical Engineering.
2006 (Swedish)Independent thesis Basic level (degree of Bachelor), 10 points / 15 hpStudent thesis
Abstract [en]

When a combined heat and power plant produces heat and power it often faces a deficit of heat load during the summer or other periods of time. This heat is often unnecessarily cooled away or the power production has to be reduced or shut off. If it is possible to store heat from periods with low heat demand to periods with high heat demand one can get many benefits. Among these benefits are: increased power production, decreased operation with partial load, uniformly distributed load.

To be able to store heat in situations like this long-term thermal heat storages are needed. In this thesis five different types of stores are presented: rock cavern storage, tank storage, pit water storage, borehole storage and aquifer storage. In this thesis the principles of the different storages is presented and experiences from operation in Sweden, Germany and Denmark are also presented.

The thesis contains a calculation of costs for the types of thermal heat storages that are suitable for use in a combined heat and power plant. To be able to function in a combined heat and power plant, a long-term thermal heat storage must be able to handle a high charge and discharge output. Storages that can meet these demands use water as store medium.

The conclusion is:

Pit storages are interesting if the capacity is below 20 000 m^3.

For capacities between 20 000 to 50 000 m^3, tank storages are most suitable.

Rock cavern storages are interesting if the capacity is larger than 100 000 m^3.

For capacities between 50 000 to 100 000 m^3, either rock cavern storages or connected tank storages are appropriate.

Place, publisher, year, edition, pages
Institutionen för konstruktions- och produktionsteknik , 2006. , 57 p.
Keyword [sv]
säsongsvärmelager, värmelager, kraftvärme, fjärrvärme, bergrumslager, ackumulatortank, groplager, borrhålslager, akviferlager
National Category
Engineering and Technology
URN: urn:nbn:se:liu:diva-7967ISRN: LITH-IKP-ING-EX--06/043--SEOAI: diva2:22857
2006-12-08, MASS, A-huset, IKP Linköpings Universitet, 581 83 LINKÖPING, 09:00
Available from: 2007-02-23 Created: 2007-02-23

Open Access in DiVA

fulltext(1114 kB)2174 downloads
File information
File name FULLTEXT01.pdfFile size 1114 kBChecksum SHA-1
Type fulltextMimetype application/pdf

By organisation
Department of Mechanical Engineering
Engineering and Technology

Search outside of DiVA

GoogleGoogle Scholar
Total: 2174 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Total: 883 hits
ReferencesLink to record
Permanent link

Direct link