41. Acid dew point temperature (ADT) of a flue gas produced by the combustion of a fuel containing 1% sulphur may be about __________ °C.
42. Which furnace employs natural draft?
43. Heat balance of furnace provides means of determining the
44. Waste heat from the outgoing flue gases in a thermal power plant is recovered by a/an
45. In producer gas making furnace, steam is added along with air to mainly control the
46. An example of shaft furnace is the
47. The thermal efficiency of a steel slab reheating furnace (walking beam type) may be about __________ percent.
48. Thermal efficiency of blast furnace stoves used for heating blast (air) may be about __________ percent.
49. Maximum thermal efficiency of boiler may be about __________ percent.
50. Overall thermal efficiency of a lumpy coal fired suitably designed heating furnace, if operated & maintained properly may be about __________ percent.
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