How much air is used per kg of coal boiler having a chimney of 35 m height to create draft of 20 mm of water, when the temperature of the flue gases in the chimney is 370°C and the temperature of the boiler house is 34°C? Take volume of 1 kg of air NTP as 0.7734 m3.

How much air is used per kg of coal boiler having a chimney of 35 m height to create draft of 20 mm of water, when the temperature of the flue gases in the chimney is 370°C and the temperature of the boiler house is 34°C? Take volume of 1 kg of air NTP as 0.7734 m3.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Concept explainers

Work and Heat Transfer

It is generally related to thermal engineering which tells about the use, creation, conversion and transfer of heat energy between the systems. It is also considered that to transfer heat from one source to another, transfer of masses is also required. There are various mechanisms by which, transfer of heat takes place i.e. thermal conduction, convection, radiation or by change of phase. All these mechanisms have their own specific features which sometimes occur simultaneously within the same system.

Question

How much air is used per kg of coal burnt in a
boiler havinga chimney of 35 m height to create
draft of 20 mm of water, when the temperature
of the flue gases in the chimney is 370°C and
the temperature of the boiler house is 34°C?
Take volume of 1 kg of air NTP as 0.7734 m3.

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