Analyse af styringsstrategier ved anvendelse af termoaktive dækelementer

Abstract

Følgende rapport omhandler analyse af indeklima, køleydelse og primært energiforbrug ved anvendelse af termoaktive dækelementer. Der analyseres på baggrund af målinger foretaget i Visionshuset beliggende på eternitgrunden i Aalborg, samt simuleringer udført i BSim. Indledningsvist præsenteres det udvalgte måleområdet, hvor udformning, installationer og styringen af systemerne fremgår. Derudover beskrives krav og normer til opretholdelse af et godt indeklima. Anden del af rapporten fokuserer på målingerne i Visionshuset, hvor resultater for indeklimaet og køleydelsen evalueres for april måned før styringerne ændres i fjerde del. For at vælge optimale styringer til afprøvning i bygningen, udføres en BSim model i tredje del af rapporten, hvorefter resultaterne analyseres for indeklimaet og energiforbruget. Modellen udføres så den repræsenterer et storrumskontor i bygningen med målte interne varmbelastninger som personer, udstyr og belysning, mens de resterende systemer vælges så tæt på de aktuelle systemer i bygningen. De udvalgte styringer fundet gennem BSim implementeres i bygningen i fjerde del, hvor der foretages målinger i to uger i maj måned. Resultaterne fra målingerne benyttes til at udforme en kalibreret BSim model, der anvendes til at udføre nye simuleringer baseret på DRY vejrdata, for at sikre at et godt indeklima opnås for den resterende del af året. Den femte del af rapporten generaliserer konceptet om de termoaktive dæk ved, at ændre produktionen af kølevandet fra grundvandskøling til anvendelse af en kølekompressor.

The following report deals with analysis of indoor environment, cooling effect and primary energy consumption by use of thermal active building systems, based on measurements performed in Visionshuset on the eternitgrund in Aalborg and simulations done in BSim. Initially the measuring area is presented, where the layout, installations and operation strategy of the systems are explained. Further the demands for upholding a good indoor environment is described. The second part of the report focuses one the measurements in Visionshuset, where results for the indoor environment and cooling effect are evaluated for the month April, before the strategy is changed in the fourth part. For choosing an optimal strategy to be tested in the building, a BSim model is created in the third part of the report, followed by analysis of the results in regards to the indoor environment and energy consumption. The model is created so that is represents an open office in the building, with measured internal heat gains such as persons, equipment and lighting, while the remaining systems is chosen as close as possible to the real systems in the building. The chosen strategies found in BSim are implemented in the building in the fourth part of the report, where measurements are done for two weeks in April. The results from the measurements are used to created a calibrated BSim model, which is used for new simulations based on DRY weather data, to insure that a good indoor environment is obtained for the remaining part of the year. The fifth part of the report generalize the concept of thermal active building systems by changing the production of the supply cooling water from underground cooling to the use of cooling compressor.

A master thesis from Aalborg University

Analyse af styringsstrategier ved anvendelse af termoaktive dækelementer

[Analysis of Operation Strategy by use of Thermal Active Building Systems]