Author: Dr V T Sathyanathan Why Economizer and Air Pre-Heaters are Provided in Boilers Most of the high capacity boilers firing coal operate with an efficiency of around 86% on the Higher Heat Value basis. Loss of around 14% can be attributed to various losses of which the dry gas loss is about 35% of the total.

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Boiler economizer is part of the heating area of boiler, to heat the feed water into saturated water inside the flue ducting, due to its absorption of low temperature flue gas heat, the economizer reduces the exhaust temperature of flue gas, save the energy, improve the efficiency, so called as economizer.

Boiler efficiency is mainly depended on the amount of losses in the system. In high capacity pulverized coal fired boilers the total losses account to about 12 to 14%. Roughly 50% of the losses are governed by fuel properties like hydrogen in fuel, moisture in fuel and ambient air conditions. The other 50% losses are carbon loss and dry gas loss.

Boiler Economiser ( Also Called boiler economizer ) is the Energy improving device that helps to reduce the cost of operation by saving the fuel and to make the system more energy efficient. We Make Economiser for Boiler with high quality functions & energy saving.

Most boilers are designed for 115% to 120% theoretical combustion air. This is generally expressed as 15% to 20% excess air. For coal furnaces, the oxygen levels would be 3% to 3.8%. Note the

Cain Industries manufactures exhaust heat recovery and steam generator systems for the engine cogeneration (CHP), boiler economizer, industrial heat transfer and exchanger markets. Cain Industries is a leading designer and producer of combustion exhaust heat transfer products. Founded in 1978 and celebrating over 4 decades in business, our

Heat Exchange Applied Technology Inc. Economizers dramatically reduce boiler fuel consumption by efficiently removing waste heat from the flue gas and returning the heat to the feedwater system. Our customized analysis allows optimum, cost effective operation of your system to ensure the greatest return on investment and shortest payback period.

Mar 04, 2020· An economiser is a mechanical device which is used as a heat exchanger by preheating a fluid to reduce energy consumption. In a steam boiler, it is a heat ex-changer device that heats up fluids or recovers residual heat from the combustion product i.e. flue …

FireCAD Economiser design software is a windows based user friendly design software. Using this module, Engineers can design a wide variety of Economisers for Fired Boilers, Waste Heat Boilers, HRSGs and for other hot gas sources of Chemical plants.

Modern-day boilers, such as those in coal-fired power stations, are still fitted with economizers which are descendants of Green's original design. In this context they are often referred to as feedwater heaters and heat the condensate from turbines before it is pumped to the boilers.