Thermal efficiency of blast furnace stoves used for heating blast (air) may be about _____________ percent?

Related Mcqs:

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....

Regenerators are installed in_______________?

A. Coke ovens B. Open hearth furnace C. Both A. & B. D. Neither A. nor B....

Coke ovens in steel plant are heated by____________________?

A. Electricity B. Blast furnace gas/mixed gas C. Coke oven gas D. Both B. and C....

If fuel and air are mixed ahead of the burner, it is called a/an ______________ burner?

A. Premix B. Outside mixing type C. Rotary D. Diffusion...

Turndown ratio of a burner gives an idea of the ______________ in the furnace?

A. Range of fuel firing rates B. Volume of the combustion chamber C. Maximum heat input rate only D. Minimum heat input rate only...