Project Details


Cooperation on Ph.D. education concerning solar heating systems with 9 European universities within the Marie Curie Actions program.

At DTU a Ph.D. study will be carried out. The aim of the study is to carry out the basic research needed to establish the basis for development of an advanced smart heat storage and control system for solar combi systems with an oil fired boiler or a natural gas burner used as the auxiliary energy supply system.
The study will focus on research of the thermal behaviour of differently designed solar combi systems for one family houses. The systems will be based on smart heat storages, which by an oil fired boiler or a natural gas burner can be heated from the top in such a way that both the water volume and water temperature at the top of the heat storage heated by the boiler/burner can vary.

The study will among other things consist of the following activities:
• Analyses on which heat storage principle is most attractive from a production, economic and thermal performance point of view.
• Investigations on how best to transfer heat from the boiler/burner to the heat storage and how best to control the operation of the boiler/burner. Either an external heat exchanger can be used to transfer heat from the boiler/burner to the water in the heat storage or a built in heat exchanger spiral in the heat storage can be used. The control system might be based on weather forecasts and/or expectations for coming heat demands and solar energy production.
• CFD (Computational Fluid Dynamics) calculations on the heat transfer inside the heat storage. The thermal behaviour of the heat storage will be elucidated by the calculations.
• PIV (Particle Image Velocimetry) measurements and PLIF (Planar Laser Induced Fluorescence) measurements of the fluid velocities and temperatures inside the heat storage. By means of these measurements the CFD model used will be validated.
• Development and validation of simulation models for the thermal behaviour of the heat storage and of a solar heating system based on the heat storage. The models will be based on the results of the CFD calculations, and validated by means of experiments with the heat storage.
• Calculations with the developed simulation models will elucidate how best to design and control the solar heating system. Based on the investigations recommendations for future development of the system will be given.
Effective start/end date01/06/200631/05/2010


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