SOLAR THERMAL SYSTEM
The STTP Work Group 3 has embarked on a program to film the “10 MOST AMAZING SOLAR THERMAL SYSTEMS IN SA”. The project is aimed at the following:
- Growing the Solar Thermal market through industry awareness and collaboration.
- Establishing confidence in the market place with Engineers, Architects, designers and contractors by showcasing solar systems installed in SA.
- Creating a Social Media platform where these videos are available FREE for training, marketing and showcasing the SA capacity directly impacting market awareness and growth.
SHORT DESCRIPTION OF THE HYBRID HOT WATER SYSTEM
Kayema Energy Solutions completed one of the largest hybrid hot water system in Southern Africa for Standard Bank building in Braamfontein. The building forms part of the cluster of buildings in the CBD of Johannesburg and boasts an employee count well within the thousands. The hot water supplied by the system ensures that the 24-hour gym facility is supplied with hot water at all times for its large staff complement. The system utilises solar thermal, heat pump and electrical technologies as heat sources with a complex cascaded storage system, all monitored by an online control system.
CAPACITY AND UNIQUE CHARACTERISTIC’S OF THE HYBRID HOT WATER SYSTEM
The sheer size and complexity of the hybrid system earned Kayema both a win and nomination of the prestigious Southern African Association of Energy Efficiency Energy Company of the Year Award in the years of 2010 and 2011 respectively.
With 48 000 litres of hot water produced daily, the commercial building saves up to 1MWh of energy every day. The total collector size exceeds 100 panels, for which custom permanent standards were designed specifically. The secondary heat source is also energy efficient; industrial heat pumps with a combined capacity of 40 thermal kilowatts are programmed to increase water temperature. As a final fail safe, stratified storage tanks include electrical elements for day night time and poor solar radiation. The performance of the system is tracked and reported to stakeholder regularly.
