An EU project is targeting three non-residential buildings in Turkey, Belgium and Spain with a view to demonstrating how energy consumption can be reduced by 50%, with a resultant reduction in carbon emissions.

The Turkish aspect is on the Aydin hospital, which is being retrofitted with the assistance of BRICKER-EU funding.

Yunus Çengel, dean of the faculty of engineering at Adnan Menderes University in Aydin, Turkey, and one of the partners in the project, told how he intends to renovate a hospital in Aydin in order to make it much more energy efficient.

‘Our estimate is that the energy bill of the hospital will decrease by half. For the time being we waste a lot of energy through the building envelope, as a result of heat gains in summer and heat loss in winter. We currently do not integrate any renewable energy. After retrofitting, we expect to have the same comfort levels in the building, using 50% less energy,’ he said. 

Çengel says the team involved will install solar films on the east and west-facing windows of the hospital, and place solar shades on south-facing windows. They will also install sun-tracking parabolic solar collectors, which concentrate the solar radiation on a tube and heat the fluid flowing through it to 250°C/-30°C.
Yunus Cengel
‘This hot fluid will then be used for tri-generation; namely to produce hot water, to provide chilled water for the air-conditioning via absorption cooling technology and to generate electricity from low-temperature heat using a so-called Organic Rankine Cycle unit. This means that the building will consume less electricity from the grid and will burn less natural gas.’

Çengel said he expects the investments in energy saving technologies to be paid off within seven years, with the payback period being even shorter for new buildings.

1When the energy efficiency measures are installed from the beginning, we will spend less on thermal-comfort related equipment, such as furnaces, chillers, motors, fan-coil units and even ductwork. When you do retrofitting, the cost of new equipment simply adds up, which extends the length of the payback period,’ he said. 

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