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Solar design for cooling and heating with TCA for Demonican Republic (tropical climates)
Dalarna University, School of Technology and Business Studies, Environmental Engineering.
2004 (English)Independent thesis Advanced level (degree of Master (Two Years))Student thesis
Abstract [en]

The DB 220 is a new technology that provides cooling and heating with the use of solar energy or other sources of heat. It has the ability to store energy for operation conditions; this technology is being developed by Climate Well is Sweden. One of the aims of this work is to size a system that can provide cooling for a house in tropical climates. This was done by selecting external components (fan coils, solar collectors and dry coolers) integrated to the DB 220 using specialised software together with correlation equations of version of the Climate Well machine. The system comprises separate fan coil units for each of the rooms to be cooled, two dry coolers and 20 m2 solar collector. This calculation does not take into account the total required load during the design day, only the design condition, and implicity assumes that if the energy collected from the collector field and stored in the DB 220 machine is not sufficient, heat is supplied from another source. The other aim was to take measurements with DB 220 installed at SERC (Borlänge, Sweden) in order to compare them to results given by the manufacturer. Measurements were acquired over a period of 5 days. The results of these measurements prove that the tested DB 220 is machine performed unreliably and that the steady state performance was worse than that stated by the manufacturer. The main causes of the problems were loss of vacuum and unwanted crystallization.

Place, publisher, year, edition, pages
Borlänge, 2004. , p. 74
Identifiers
URN: urn:nbn:se:du-1372OAI: oai:dalea.du.se:1372DiVA, id: diva2:517872
Uppsok
Technology
Supervisors
Available from: 2005-08-12 Created: 2005-08-12 Last updated: 2012-04-24Bibliographically approved

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