Introducing of absorption cooling process in CHP systems: an opportunity for reduction of global CO2 emissions
2011 (English)In: Proceedings of ECOS 2011 - 24th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems, 2011, 3105-3116 p.Conference paper (Other academic)
The purpose of this research study is to examine the potential for reduction of global CO2 emissions (GECO2) by converting from vapour compression chillers to absorption chillers in Stockholm’s district cooling (DC) system and in Stockholm’s industrial sector. The analysis of the cooling production is made through optimizations in MODEST, a model framework developed for analysis of dynamic energy systems. The results show that more than 95% of the cooling demand that is currently met by compression chillers during the months from April to October should be produced by district heat (DH)-driven absorption cooling chillers in order to lower GECO2. As a consequence of this conversion, the utilization time of the combined heat and power (CHP) plants in Stockholm’s district heating (DH) system would be prolonged and at the same time the electricity used for compression cooling production would be reduced. Assuming coal condensing production as the marginal electricity production in the common electricity market and considering both the increase in electricity production and the reduction in electricity used, the potential for the reduction of GECO2 would be about 0.15 million tonnes annually. Rising cooling demand would make the introduction of absorption technology in the system even more interesting. If the comfort cooling demand in the region increases by 30%, electricity production in the system during the summer would be about 70% higher, which would lead to a reduction of GECO2 by 0.2 million tonnes annually compared with GECO2 today.
Place, publisher, year, edition, pages
2011. 3105-3116 p.
Absorption cooling, Carbon dioxide, CHP
Engineering and Technology
IdentifiersURN: urn:nbn:se:liu:diva-106892OAI: oai:DiVA.org:liu-106892DiVA: diva2:719313
ECOS 2011 - 24th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems, 4-7 July, Novi Sad, Serbia