Klimatanpassning av block B2-B7 på Akademiska sjukhuset med avseende på ovanligt höga temperaturer i framtiden
Sammanfattning: The aim of this thesis has been to examine how the indoor climate in block B2-B7 at Uppsala University Hospital is affected by unusually high outdoor temperatures and to propose measures which can be taken in order to maintain the desired indoor climate. This was done through simulations in the software IDA ICE. The results show that the indoor temperatures exceed the permitted maximum limit in most of the floors in the buildings, and that measures must be taken in order to guarantee an acceptable indoor climate. Two of the analyzed measures, reduction of internal heat loads and mitigation of the urban heat island effect, could not be quantified and it was not possible to determine the extent of their impact on the indoor climate. However, installation of external sunscreens on the windows to the south and west turned out to reduce the cooling demand of the buildings with approximately 130 kW and should therefore be considered a relevant measure. Sunscreens alone were not sufficient to keep the indoor temperature below the maximum limit and there is therefore a need to expand the cooling capacity in the buildings by installing more air coolers. The cooling power deficit was estimated to be 360–440 kW through simulations, given that the outdoor temperature is in the interval 36–45°C. Among the proposed measures, sunscreens should have the highest priority due to the energy saving aspect. In addition to this, the installation of air coolers has been divided into phases based on indoor temperature in the respective buildings and floors. Within the phases, a further prioritization with respect to the activity type of each floor is considered necessary. The final product of the study is an action plan which can be used in the work of climate adapting the buildings.
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