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Which type of economizer is used in Natural gas fired thermal plant?(a) Condensing(b) Steaming(c) Integral(d) IndependentThe question was asked in an interview for internship.My question is from Boiler Mounting Accessories topic in chapter Steam Generators & Accessories of Energy Engineering

Answer»

The correct answer is (a) Condensing

Explanation: Condensing economizers are used in natural gas fired thermal power PLANT. They reduced the flue gas TEMPERATURE below condensation temperature as low as 25^oC. They increase the BOILER efficiency by 10-15%. While USING the CONDENSER the fuel should not contain sulfur.



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