Design of waste heat boiler for recovery of waste heat from furnace gases depends upon the_________________?

Related Mcqs:

1. Which of the following is not a continuous waste heat recovery equipment from the flue gases going out of furnace ?

   A. Economiser B. Regenerator C. Ceramic recuperator D. Waste heat boiler...

2. In a furnace, the heat taken by the charge/stock and the heat lost to the furnace structure & flue gases depends on the__________________?

   A. Rate of firing and emissivity of flame B. Thermal conductivity of the charge & structural materials of furnace C. Nature of process; whether batch, continuous or intermittent D. All A., B. and C....

3. The rate of scaling of furnace stock depends upon the_________________?

   A. Temperature B. Time C. Nature of atmosphere D. All A., B. and C....

4. Regenerators are used for waste heat recovery in____________________?

   A. By-product coke ovens B. Beehive coke oven C. Blast furnace stoves D. Soaking pits...

5. Metallic recuperators are not used for waste heat recovery, if the hot flue gas temperature is above _____________ °C, because corrosion prevails at higher temperatures?

   A. 350 B. 750 C. 1050 D. 1250...

6. Circulation of gases in furnace is caused by the_________________?

   A. Change in volume during a change of temperature B. Difference in density between hot and cold gases C. Furnace pressure in conjunction with draft in flues D. All A., B. and C....

7. Waste heat from the outgoing flue gases in a thermal power plant is recovered by a/an_________________?

   A. Economiser B. Steam superheater C. Air preheater D. All A., B. and C....

8. The heating capacity of muffle furnace depends on the_________________?

   A. Surface area & emissivity of the stock B. Properties of the muffle wall (temperature, area, and emissivity) C. Both A. & B. D. Neither A. nor B....

9. Which furnace employs an I.D. fan for the removal of flue gases from the furnace ?

   A. Coke oven B. Blast furnace stoves C. Beehive coke oven D. High pressure boiler...

10. Combustion of furnace oil in a furnace (soaking pit) with preheated combustion air at 400°C results in saving of about __________ percent furnace oil as compared to its combustion with atmospheric air, if the flue gas outlet temperature from the soaking pit is 1200°C ?

    A. 5 B. 60 C. 20 D. 40...