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Distributed energy resources
2/3/2014 1:12:51 PM

Distributed energy resource (DER) systems are small-scale power generation technologies (typically in the range of less than 25 MW) used to provide an alternative to or an enhancement of the traditional electric power system.

Distributed cogeneration sources use natural gas-fired micro turbines or reciprocating engines to turn generators. The hot exhaust is then used for space or water heating, or to drive an absorptive chiller for air-conditioning. The clean fuel has only low pollution. Designs currently have uneven reliability, with some makes having excellent maintenance costs, and others being unacceptable.

Combined Heat and Power (CHP) generators are also of a more expensive per watt than central generators. They find favor because most buildings already burn fuels, and the cogeneration can extract more value from the fuel.

In countries with high pressure gas distribution, small turbines can be used to bring the gas pressure to domestic levels whilst extracting useful energy. 

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Distributed energy resources

Distributed energy resources

Distributed energy resource (DER) systems are small-scale power generation technologies (typically in the range of less than 25 MW) used to provide an alternative to or an enhancement of the traditional electric power system. Distributed cogeneration sources use natural gas-fired micro turbines or reciprocating engines to turn generators.

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Electric power industry of Iran

Electric power industry of Iran

In 2009, Iran had an installed electricity generation capacity of more than 50 Giga watts (GW). Most electricity is produced in steam boilers, using inefficient combined-cycle gas-turbine technology. These are powered by gas in the summer, when consumers need less gas for heating. In the winter, fuel oil is used because gas is need for home-heating, thus reducing the amount of gas available for export. 

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Main benefits of DG

Main benefits of DG

Combined Heat and Power (CHP) generators are also of a more expensive per watt than central generators. They find favor because most buildings already burn fuels, and the cogeneration can extract more value from the fuel. In countries with high pressure gas distribution, small turbines can be used to bring the gas pressure to domestic levels whilst extracting useful energy.

MORE INFO...
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