Deepakkumar Yadav
Constructional Details of Transformer (Single Phase) The transformer has two windings primary and secondary. These windings are made of enamelled copper. These windings are suitably put on the limbs of the transformer core. A suitable insulation is used for the former on which the windings are put. The transformer core is made of silicon steel … Read more
Oil Level Indicators in Transformer After 1 month of service, and every 3 to 5 years, check the tank oil level indicators. These are float operated, with the float mechanism magnetically coupled through the tank wall to the dial indicator. As level increases, the float rotates a magnet inside the tank. Outside the tank, another … Read more
Air Preheater in Thermal Power Plant As the entire heat of the flue gases cannot be extracted through the economizers, air preheaters are used to recover some of the heat from these gases. On an average increase of 20°C in the air temperature results in an increase in the boiler efficiency by 1%. The use … Read more
Economizer The economizer is used to heat feed water so as to recover a part of heat which would otherwise be lost through flue gases. It is connected in the passage of the flue gases in between the exit from the boiler and enter to the chimney. By its use, economical use of fuel is … Read more
Boiler The boilers used can be classified according to contents of tubular heating surface i.e. gas or water and accordingly are called as fire tube boilers and water tube boilers. 1. Fire tube boilers It consists of tubes through which hot gases are passed and the water surrounds these tubes. It essentially consists of a … Read more
Need of Energy Conservation Everyday we flip switches, work in busy factories using energy at a rate which is growing day by day. Energy is playing an important role. It is the central force behind our productivity, our leisure and our environment. There is a strong correlation between energy use per capita and standard of … Read more
ENERGY SCENARIO Energy is one of the major inputs for the economic development of any country. In the case of developing countries, the energy sector assumes a critical importance in view of the ever increasing energy needs requiring huge investments to meet them. India’s per capita energy and electricity consumptions are less than one tenth … Read more
Coal Handling Unit in Thermal Power Plant The coal handling may change slightly from plant to plant, which may depend upon plant type and type of fuel used, still Figure shows various stages In coal handling. (i) Delivery of coal Coal may be delivered by sea or river, rail or road. Selection of suitable method … Read more
Indian Coal Indian coal is having high ash contents. The ash is finally disseminated through the coal so that cleaning of coal is difficult and costly process. Washing of coal to reduce the ash content is necessary to obtain low ash metallurgical coal. The washing creates a large proportion of the middlings which can be … Read more
Type D chopper Another two quadrant configuration is type D chopper as shown in Figure (a) In this configuration the load is connected differentially between type A and type B chopper. Figure (a) Figure (b) This chopper can operate in the first or fourth quadrant as shown in Figure (b). It can operate either in … Read more