NCEUB Conferences, MC2014 Masters Conference People and Buildings

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Are ventilation cooling towers an important element of plus-energy houses in southern Europe?
Francesco Babich, Malcolm Cook, Jan Cremers

Date: 2014-09-19 02:50 PM – 03:00 PM
Last modified: 2014-09-18

Abstract


Cooling homes is important  in order to maintain acceptable internal comfort, especially in southern European climatic zones. This research project examined one main hypothesis: that cooling towers are an important element of plus-energy houses in southern Europe.  In particular,  refinements to the design of the existing ventilation tower of a Solar Decathlon House developed by the Hochschule fϋr Technik - Stuttgart are proposed and tested  using  dynamic thermal and computational fluid dynamics simulations in order to predict energy consumption,  mean and peak CO2 levels, temperatures, ventilation rates, cooling potential, fresh air distribution and indoor air quality. Having analysed wet bulb temperature and wet bulb depression values, eight locations were selected in Greece, Italy, Portugal and Spain to investigate the likely performance of the tower integrated within the building. Results show that the annual energy demand for space cooling can be halved without jeopardising the internal comfort.