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Energy and economic analysis of an integrated solar absorption cooling and heating system in different building types and climates

Tiago Mateus and Armando C. Oliveira

Applied Energy, 2009, vol. 86, issue 6, 949-957

Abstract: The use of solar energy in buildings is an important contribution for the reduction of fossil fuel consumption and harmful emissions to the environment. Solar thermal cooling systems are still in their infancy regarding practical applications, although the technology is sufficiently developed for a number of years. In many cases, their application has been conditioned by the lack of integration between cooling and heating systems. This study aims to evaluate the potential of integrated solar absorption cooling and heating systems for building applications. The TRNSYS software tool was used as a basis for assessment. Different building types were considered: residential, office and hotel. The TRNSYS models are able to run for a whole year (365 days), according to control rules (self-deciding whether to operate in heating or cooling modes), and with the possibility of combining cooling, heating and DHW applications. Three different locations and climates were considered: Berlin (Germany), Lisbon (Portugal), and Rome (Italy). Both energy and economic results are presented for all cases. The different local costs for energy (gas, electricity and water) were taken into account. Savings in CO2 emissions were also assessed. An optimization of solar collector size and other system parameters was also analysed.

Keywords: Solar; cooling; Absorption; chiller; Integrated; cooling; and; heating; TRNSYS; simulation (search for similar items in EconPapers)
Date: 2009
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