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Which one of the following modes of heat transfer would take place predominantly from boiler furnace to water wall?

Which one of the following modes of heat transfer would take place predominantly from boiler furnace to water wall? Correct Answer Radiation

A steam boiler is designed to absorb the maximum amount of heat released from the process of combustion.

Heat transfer within the steam boiler is accomplished by three methods: radiation, convection, and conduction.

  • The heating surface in the furnace area receives heat primarily by radiation.
  • The remaining heating surface in the steam boiler receives heat by convection from the hot flue gases. Heat received by the heating surface travels through the metal by conduction.
  • Heat is then transferred from the metal to the water by convection.

Related Questions

Ratio of chemical A and B in boiler Y is 3 : 2 and Boiler X has ratio of chemical A to chemical B as 1 : 7, 16 litres of mixture is removed transferred from boiler X to boiler Y. What is the total capacity of boiler Y if capacity of boiler X is 144 litres and difference between chemical A and B in boiler Y after transfer is 25 litres? Assume that after transferring 16 litres from boiler X, boiler Y is running at full capacity
Relative percentage of heat absorbed through the heat transfer of
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(ii) Boiler tank
(iii) Superheater
(iv) Economizer
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Heat transfer to the water wall in a high pressure water wall type boiler furnace is mainly by
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One face of a furnace wall is at 1030°C and the othere is exposed to the room temperature (30°C). If the thermal conductivity of the furnace wall is 3W. m-1 k-1 and the wall thickness is 0.3 m the maximum heat loss (in W/m2) is
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In a surface condenser, the water flowing through a series of tubes at the rate of 200 kg/hr is heated from 15 degree Celsius to 75 degree Celsius. The steam condenses on the outside surface of tubes at atmospheric pressure and the overall heat transfer coefficient is estimated at 860 k J/m2 hr degree. Find the effectiveness of the heat exchanger. At the condensing pressure, stream has a saturation temperature 0f 100 degree Celsius and the latent heat of vaporization is 2160 k J/kg. Further, the steam is initially just saturated and the condensate leaves the exchanger without sub-cooling i.e. only latent heat of condensing steam is transferred to the water. Take specific heat of water as 4 k J/kg K
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