Dynamic Modelling and Exergy Analysis of a Smart Building Heating System

Dynamic Modelling and Exergy Analysis of a Smart Building Heating System

Van den Baar, M.L.R.

Boersma, B.J. (mentor)

Mechanical, Maritime and Materials Engineering

2016-12-22

Sustainable supply of heat for space heating and domestic hot water heating has received increasing interest in Europe. Assessing the performance of a building heating system with energy analysis has limitations regarding the implementation of sustainable heat, because energy analysis only takes into account the quantity of energy. Exergy analysis allows a better evaluation of a system’s performance as it also takes into account the quality of an amount of energy. A dynamic model of the heating system of Louis DavidsCarré (LDC2) has been developed and calibrated in the new simulation software: ‘CHESS’. The model is controlled by the smart thermal energy control ‘HeatMatcher’. The model is well able to capture the dynamic behavior of the complex heating system. The time scales of the dynamics as well as the temperatures and mass flows in the system resemble those of a realistic building heating system and show good comparison with the measurements from LDC2. A week in winter, spring and summer have been simulated. The results of the simulations are used for (dynamic) exergy analysis. The exergetic performance of the heating system with HeatMatcher control has been assessed. The results substantiate the importance of exergy analysis in analyzing the performance of heating systems, as energy efficiencies are between 89% and 95%, whereas exergy efficiencies are between 19% and 29%. Furthermore, opportunities for the optimization of the exergetic performance of the system, as well as for the further development of the simulation software CHESS, were identified.

http://resolver.tudelft.nl/uuid:a9f649c2-69e4-4ae5-8a85-6093a0311a9f

Student theses

master thesis

(c) 2016 m.van den Baar