N. Pardo-Garcia, G. Zubi, G. Pasaoglu, R. Dufo-López:
"Photovoltaic thermal hybrid solar collector and district heating configurations for a Central European multi-family house";
Energy Conversion and Management,
In central European countries, district heating is a common and standard way to cover the residential
heat demand. While the consumers are connected to the heat network and electricity grid, they are being
increasingly encouraged to become prosumers by having own distributed renewable energy generation.
At the same time, the energy performance requirements for new and renovated buildings are setting progressively
higher energy efficiency standards. This tendency is effectively reducing the carbon footprint
of the residential sector in Central Europe and will eventually lead to low and zero carbon buildings
becoming the standard. One of the emerging technologies within this approach are Photovoltaic thermal
hybrid solar collectors, which combine heat and power generation and are easy to integrate in buildings.
In this study, the possibility to use such a system, supported by a heat pump, in a Central European multifamily
house is addressed. Three configurations are considered; the building, the hybrid and district heating
configuration. In the building configuration the heat from the solar collectors is used directly for
domestic hot water and space heating and no use is made of excess heat. In the hybrid configuration,
the direct heat consumption in the building is prioritized, while excess heat is exported to the district
heating network. Finally, in the district heating configuration, the solar system operates as a microplant
that supplies all produced heat to the district heating network. The study shows that the use of
Photovoltaic thermal hybrid solar collectors in combination with district heating provides important benefits
in terms of sustainability, energy security, carbon abatement and costs. Thereby, configurations that
can export heat to the network have better energy efficiency and result more profitable.
Erstellt aus der Publikationsdatenbank des AIT Austrian Institute of Technology.