Highly efficient and flexible power plants in buildings

This paper investigates a new system for balancing the electrical grid by using dynamic simulation. It con-sists of a fuel cell that runs continuously to achieve high efficiency. To have the possibility to react to fluc-tuations in the electrical grid, the system additionally contains a certain number of heat pumps that use the electrical energy provided by the fuel cell, if it does not need to be fed into the grid. Thus, the system gen-erates and consumes power while keeping the grid in balance. The system can achieve energy savings com-pared to a combination of gas boilers and a gas turbine of up to 33 %.