A thirty six day training programme on Alternative Energy Technologies (AETs) for strengthening the Capacity of Tumba College of Technology, Republic of Rwanda was organized by Center for Energy Studies from 24th June 2008 to 31st July 2008 (2065/3/10 to 2065/4/16). This training programme was sponsored by Japan International Cooperation Agency (JICA) Nepal Office. Six Rwandan teachers (engineers) participated in this training programme. The trainees were Mr. Iyakaremye Emmanuel, Mr. Habineza Frederic, Continue reading
Main source of energy in the CES building is the 6.5 kW capacity of Solar PV system. 100 no. of Solar PV modules each of 65 Watt are kept as a roof on the main entrance of the building. The slope of the panel is 30? North-South. With the sunshine hours of 4.15 hour peak sun day, it generates electricity of 27 kWh in a day.
The electricity generated is stored in battery banks kept at the basement of the building. 120 batteries of heavy duty nature, each of 2 Volt capacity 468 AH, are connected in series which produce 240 Volts. Such two battery banks are connected in parallel and each produces 240 Volt DC. An automatic software controlled inverter continuously monitors the whole process of the electricity generation from solar panel, storing in batteries and the connection to the grid as well. The inverter also supplies the excess power generated to the campus grid.
ZEH is managed with state of the art Building Energy Management System. It is well equipped with a sophisticated software controlled sensors. The system continuously monitors the occupancy of each places and it is programmed for managing the lights in those places sensing the motion of the occupant. The system also detects the Carbon monoxide level and humidity level in the designated areas, and maintains the database of the same.
The concept of the Earth air Tunneling for air conditioning spaces in winter as well as in summer has been materialized in the building. The conference room and a class room of the building are air conditioned with EAT. It takes in ambient air from a 70 m long tunnel made of hume pipe 4 m (0.5 m dia) deep down from the Earth surface.