Power Plant Engineering

140 POWER PLANT ENGINEERING Total cost = Rs. [33,203 + 10,731 + 37,500] = Rs. 80,431 Energy cost per kWh 4 80, 431 153.3 10   ...

POWER PLANT ECONOMICS ANDVARIABLE LOAD PROBLEM 141 (iii) The maximum energy that could be produced daily if the plant operating ...

Chapter 4Chapter 4Chapter 4Chapter 4Chapter 4 Steam Power PlantSteam Power PlantSteam Power PlantSteam Power PlantSteam Power Pl ...

STEAM POWER PLANT 143 A furnace to burn the fuel. Steam generator or boiler containing water. Heat generated in the furnace is ...

144 POWER PLANT ENGINEERING superheater tubes, flow through the dust collector and then through economiser, air pre-heater and f ...

STEAM POWER PLANT 145 (iii) Ability to burn coal especially of high ash content, and inferior coals. (iv) Reduced environmental ...

146 POWER PLANT ENGINEERING need of unloading device as the trucks may dump the coal to the outdoor storage. Coal is easily hand ...

STEAM POWER PLANT 147 Bucket elevator. It consists of buckets fixed to a chain (Fig. 4.5). The chain moves over two wheels. The ...

148 POWER PLANT ENGINEERING (ii) The speed of conveyor can be regulated easily. (iii) They have a rugged construction. (iv) They ...

STEAM POWER PLANT 149 The sealing of stored pile is desirable in order to avoid the oxidation of coal after packing an air tight ...

150 POWER PLANT ENGINEERING 4.4 Fuel Burning Furnaces Fuel is burnt in a confined space called furnace. The furnace provides sup ...

STEAM POWER PLANT 151 Following factors should be considered while selecting a suitable combustion equipment for a particular ty ...

152 POWER PLANT ENGINEERING The main characteristic of a grate fired furnaces are the heat liberation per unit of grate area and ...

STEAM POWER PLANT 153 (i) The efficiency of a hand fired furnace is low. (ii) Attending to furnace requires hard manual labour. ...

154 POWER PLANT ENGINEERING The hot air that moves through a layer of ash and picks up additional energy. The air then passes th ...

STEAM POWER PLANT 155 Coal Hopper Front Sprocket Air Ports Chain Grate Air Inlets Ash Fig. 4.16. Chain Grate Stoker. The chain t ...

156 POWER PLANT ENGINEERING Advantages The various advantages of spreader stoker are as follows : Its operation cost is low. A ...

STEAM POWER PLANT 157 steam demand. The boiler operation becomes more flexible and better efficiency of combustion is achieved. ...

158 POWER PLANT ENGINEERING The coal pulverising mills reduce coal to powder form by three actions as follows: (i) Impact (ii) A ...

STEAM POWER PLANT 159 As the drum rotates the coal gets pulverized due to the combined impact between coal and steel balls. Hot ...