| dc.description.abstract | The work done in this master s thesis is a continuation of a previous thesis on an early decision tool on the heat pump (HP) integration in office buildings. The simulation tool (SimTool) proposed in this thesis enables the user to take decisions about the best energy supply system for an office building based on costs, energy performance and CO2 emissions.
The original simulation tool was critically reviewed to formulate the improvements that should be implemented in the new tool. According to this review the main fields of improvement were found to be the modelling of the hydraulic system including the HP, the buffer tanks (BT) and the ground source model (GSM). Those requirements motivated the choice of Matlab/Simulink for the hydraulic system and Matlab as the executing program. To build up the different hydraulic systems in Matlab/Simulink the Carnot toolbox is used. The algorithm which allows the connection between those two tools as well as physical model behind the blocks used in Matlab/Simulink are shown in this report.
The definition of the different building heating system (BHS) combinations was done based on the state of art for the HP integration in office buildings, since the final version of this SimTool should be able to design the best building heating system with the components available on the market. The implementation of the costs and the CO2 emissions is carried out in the same way as in the previous simulation tool.
The SimTool was first proven by analysing the performance of the different components like BT, HP and GSM and comparing it with the results of the previous thesis. Afterwards the simulation tool was used to investigate the influence of different parameters on the system performance. The results of this analysis are shown in the report, and the main results are summarized below.
- When deciding on which HP system to use in a certain office building it is very important to have accurate values for the cost parameters, since they have a big influence on the optimal coverage factor (OCF) of the HP.
- The size as well as the layout of the BT has a strong impact on the HP-performance and the OCF. | |
