Laboratory tests, system simulation, prototype development
Metrological monitoring of two test systems in real operation
optimization
Solar-assisted heat supply systems for low-energy buildings
The introduction of the Energy Saving Ordinance (EnEV) means that the low-energy house standard for buildings has been established and thus the heating energy requirement of buildings has been reduced by around 30% compared to the previously valid Thermal Insulation Ordinance (WSVO '95). At 30 to 15 kWh/m²a, the characteristic values for the annual heating requirement to be complied with for low-energy buildings fall below the limit values required by the EnEV by a further 40 to 60 %.
Improved thermal insulation alone is not sufficient to achieve the target values. The use of energy-efficient, optimally coordinated system technology that uses renewable energies is required. The aim of the project is therefore the development of compact central heating systems for low-energy buildings with an annual heating requirement of no more than 30 kWh/m²a for heating, ventilation and hot water preparation, as well as their prototypical implementation.
Mathematical models of possible system components are to be developed and adapted on the basis of measurement data from field and laboratory tests. By varying the essential model parameters, system configurations optimally adapted to the load cases are determined with the aid of system simulations.
The results of the system simulation are incorporated into the production of the prototypes, which correspond to the derived system configurations in terms of their design. The functionality of the configurations will be verified in laboratory tests and the control concepts developed will be tested. Finally, a small series of devices will be developed, the practical suitability of which will be demonstrated in a one-year field test.
The result of the project should be marketable systems that are optimized in terms of operating behavior and that contribute effectively to reducing energy consumption and emissions in residential construction.