What is secondary air damper control?

The goal of this work is to control the air dampers in a different way according to the unit load thereby increasing the boiler efficiency and to reduce the pollution. A set of six interlock conditions were provided for this purpose.

What is primary air and secondary air in boiler?

The primary air is heated up to about 170°C by means of a heat exchanger with the exhaust gas. The secondary air is the postcombustion air injected into the upper part of the combustion chamber and is necessary for completing the combustion process.

What is SADC power plant?

The Southern African Development Community (SADC) continues to seek ways of increasing power generation across the Region to surpass the 3,595 megawatts (MW), out of a targeted 4,000MW, contributed in 2019 by Angola, the Democratic Republic of Congo, Malawi, Mozambique, Namibia, South Africa and the United Republic of …

In which boiler combustion takes place under higher pressure?

Explanation: Benson boiler is high pressure, drum less, water tube boiler with forced circulation. This was invented by Mark Benson in year 1922.

What is secondary air in power plant?

Secondary Air Fans It is generally said to be an extra air that must be provided for complete combustion of fuel. Secondary air is generally provided through the nozzles installed on the walls of the furnace.

What is the function of secondary air?

Secondary-air system components Secondary-air valves are fitted between the secondary-air pump and the exhaust manifold. Use is made of different versions. The secondary-air non-return valve stops exhaust gas, condensate or pressure peaks in the exhaust system (e.g. misfiring) causing damage to the secondary-air pump.

Is South Africa a regional power in the SADC?

The membership of SADC is made up of the following countries; Angola, Botswana, Democratic Republic of Congo, Lesotho, Malawi, Mauritius, Mozambique, Namibia, Seychelles, South Africa, Swaziland, Tanzania, Zambia and Zimbabwe.