Expansion of energy infrastructure at the Higher School of Law and Public Administration using renew
About this good practice
Innovative installation of photovoltaic cells installed at the campus of the Higher School of Law and Public Administration in Rzeszów. It is one of the largest facilities of heat pumps and photovoltaic cells in Poland. Objective The aim of the investment was the acquisition of electricity with a capacity of 150 KWp from solar energy using silicon technology (back-contract). The aim of the investment was also the construction of base stations for charging electric cars. The aim of the project was also to develop a functional program of retrofitting heat pump system with the possibility of passive - active cooling of selected rooms of the Higher School and the use of waste heat air for the regeneration of brine heat pump. The solutions, that have been applied in the Higher School, are based on two renewable energy sources: -The first, is the heat gained from the ground, from a depth of over 125 meters (30 wells) where specialized probes, connected to the pump, absorb the heat from the ground. The thermal energy for heating the building is taken from the ground by a system of thirty vertical borehole heat exchangers with a length of 125 meters deployed in the area surrounding the property. The existing pump system was modified and equipped with a system of passive-active cooling lecture halls. In addition, waste heat from air conditioners is used for the regeneration of heat source heat pump.
-The second is the processing of solar energy to power low voltage.
Resources needed
Financial resources: ~ 1.500.000 Euro
Evidence of success
- Nominal power obtained from photovoltaic system: 150 kWp. Annually, this allows to obtain energy of 132 MWh
- Estimated losses caused by temperature changes: 3.2% (in relation to the average local temperature)
- The total losses of the photovoltaic system: 18.0%
Potential for learning or transfer
Thanks to the technology, the Higher School of Law and Public Administration sets a new direction in ecology. According to calculations, the Higher School’s own contribution in the installation will be paid back in 5 years. Lowering the cost of maintaining the buildings will at the same time lower the cost of studying at the Higher School (saving money in lighting the building and rooms and running air conditioning system). Extensive system of heat pumps and photovoltaic panels will also reduce the emission of pollutants into the atmosphere. The project will also contribute to the promotion of innovative technologies.
Further information
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Good practice owner
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Organization Higher School of Law and Public Administration