One of the largest rice mills in ASEAN opts for Cogeneration

Commissioned: March 1997

Milling capacity: 500 tons of paddy per day

Cogeneration Potential: 2.5 MV

Energy source: Rice husk

How does it work?
It consists of a boiler supplying steam to a condensing turbine which in turn generates electricity to a maximum of 2.5MW

The spent steam form the boiler is used for drying the paddy

Flue gas - Combustion exhaust gas

Commissioned: December, 2004

Cogeneration Potential: 0.53 MV

Energy source: Wood wastes (beams, packing materials, boxes, sawdust) 

How does it work?
The plant burns wood waste to generate electricity. A turbine connected to a generator produces 530 KW of electricity when supplied by steam from the boiler. The plant uses the 15 tons of the spent steam to sterilize and recycle waste

Show me the money:
The company charges $55 for every tonne of wood chips, it disposes
Annual operation costs for running the facility is $634,000 The company claims that at the present rate, it will be able to recover investments within 5 years

The Svartsengi cooperation started the first geothermal power plant in the world. The plant combines generation of electricity with production of hot water for district heating that serves 20,000 people

Set up in - 1976

Cogeneration Potential: 46.4 MW 150 Mega joules per second (in the form of hot water)

Energy source: Geothermal steam and Brine

How does it work?

The plant is built over an old lava field. It harnesses the energy of the open valves and fissures lining this geothermal fault line to run a Combined Heat and Power plant. Till date, 20 wells have been dug to trap steam vents and hot brine streams – two thirds sea water, running underground – to generate power.

Part of the hot steam is used to generate electricity and the rest along with the brine is distributed to heat nine towns and an International airport.

The effluent brine from the plant is disposed of into a surface pond, called the Blue Lagoon, popular to tourists and people suffering from psoriasis and other forms of eczema seeking therapeutic effects from the silica rich brine.

Solar Cooling on the roofs of ISI PERGRINE, a business center of Trento, Italy

Cogeneration potential – 108 KW

Energy source: Solar panels

How does it work?

Solar panels on the roof concentrate and store sun’s energy for winter heating and summer cooling of the two storey tall business center. The panels also meet the electricity needs of the Center.

The heat concentrated by the solar panels is used to heat water which is circulated through the building during winters. In summertime, the hot water is used to run coolers which lower the temperature of the building’s ventilation.