The graph below illustrates the building hourly demand for the year and it can be noticed that there are peaks in energy demand in the winter and summer. To supply this demand solar PV systems were used along with solar thermal for the hot water demand.

Solar PV System

Solar PV was chosen for its reliability and minimum maintenance requirements.

The diagram below shows the solar radiation intensity in Turkey. In Istanbul the solar radiation per year is about 1.5 MWh/m^2 which made solar PV a great option for the building.

The PV panels were placed carfully on the roof of the building to allow for access for maintainence and to have minimum shading on each other.

- 326 Solar Polycrystalline PV Panels
- Rated Peak Power 330W

- Capital Cost $100,000
- Average Return $17,000

- Demand 332.5MWh/yr
- Supply 140MWh/yr
- Proportion Supplied 40%

This video illustrates the shading analysis that was done to ensure minimum shading on the PV panels for maximum Output. This is the shade on the first of April.

The graph below shows the hourly demand and supply of the building with most of the base load during the day covered by the supply, there are also time when the supply is higher than the demand, this surplus will then be exported to the grid. The sumilation results show that about 17MWh is exported to the grid and the 140MWh is supplied to the building during the year and this accounts for more than 40% of the total demand. Increasing the size of the system beyond this point will not be possible due to the roof area available.

The payback period for this system is just under six years and it has been taken into account that PV panels decrease in efficiency every year and also that there is an annual increase in the price of electricity.

Solar Thermal Collector

Evacuated tube collectors are much more efficient than flat plat collectors and could provide heated water even in the cold winter day because the heating tubes are seperated from the environment with vacuum.

The diagram below shows the hourly hot water demand and supply of the building and it can be seen that 63% of the demand is covered. to fully cover the demand the system must be greatly over sizied to about 3 times its current size the payback period will also greatly increase. So a backup electric heater was used to supply the remaining amount.

- 75 array of evacuated tubes
-10 m^3 hot water Storage

- Capital Cost $ 143,640.00
- Average Return $25,800
- Payback Period 5.5 Years

- Demand 4,100 Ltr/Day
- Proportion Supplied 63%

Address

16 Richmond St,
Glasgow
G1 1XQ

Contacts

Email:
esru@strath.ac.uk
groupproject8@outlook.com
Phone: +44 (0)141 552 4400

Links

https://www.strath.ac.uk/