000 kW steam power station uses coal of calorific value 15,000 kcal per kg. If the coal consump- tion per kWh is 0-5 kg and the load factor of the station is 40%, calculate (i) the overall efficiency (ii) coal consumption per day. (i) 28-7% (ii) 312 tons]

000 kW steam power station uses coal of calorific value 15,000 kcal per kg. If the coal consump- tion per kWh is 0-5 kg and the load factor of the station is 40%, calculate (i) the overall efficiency (ii) coal consumption per day. (i) 28-7% (ii) 312 tons]

EBK ELECTRICAL WIRING RESIDENTIAL

19th Edition

ISBN:9781337516549

Author:Simmons

Publisher:Simmons

Chapter27: Service-entrance Equipment

Section: Chapter Questions

Problem 32R

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Concept explainers

Electrical Heating Unit

The conversion of electrical energy to heat energy is known as electric heating. The heating system that converts the electrical energy to heat energy for various application is called electrical heating unit. Electricity is employed as the firing mechanism in electric heating systems, which transforms electric current to heat. Electric heaters have heating elements in the form of electric resistors.

Question

3. A 65,000 kW steam power station uses coal of calorific value 15,000 kcal per kg. If the coal consump-
tion per kWh is 0-5 kg and the load factor of the station is 40%, calculate (i) the overall efficiency (ii)
coal consumption per day.
(1) 28-7% (ii) 312 tons]

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