heating and the electricity sector has been identified as a promising approach
to efficiently accommodate large shares of transient renewable
energy like wind power. One approach to convert electric power into heat is to
make use of large-scale heat pumps and electric boilers supplying the district
heating grid. It is especially promising as district heating grids and thermal
storages in the grid provide a large amount of heat storage capacity and thus
flexibility as to when the necessary heat is produced. This enables the use of
power-to-heat units to provide balancing services to the electricity grid.
However, most large heat pumps that have been installed to supply district
heating, have been designed for base load operation, i.e. they have not been
optimized to react quickly to signals from the electricity grid. Accordingly,
there is a lack of knowledge about how fast large heat pumps can actually
start-up and shut-down, how they perform during regulation and what the
limiting factors are to be able to react faster.
The aim of this project is to find design criteria which enhance heat pumps' dynamic behaviour. To answer this question different heat pump set up's should be simulated in Dymola/Modelica. An introduction into to the program will be given and it is expected that the student is interested in becoming familiar with it.