BLOG ON THERMAL POWER PLANT (part 1-Site selection and introduction) …

 

PARTS:-

PART 1- Site selection and introduction

PART 2- Principle and process

PART 3- Construction of plant and parts

BLOG ON THERMAL POWER PLANT

(part 1-Site selection and introduction) …

Site selection criteria

1.Transportation network:

 Easy and enough access to transportation network is required in both power plant construction and operation periods. 

2.Gas pipe network:

 Vicinity to the gas pipes reduces the required expenses. 

3.Power transmission network:

To transfer the generated electricity to the consumers, the plant should be connected to electrical transmission system Therefore the nearness to the electric network can play a roll. 

4.Geology and soil type:

 The power plant should be built in an area with soil and rock layers that could stand the weight and vibrations of the power plant.

5.Water resources:

 For the construction and operating of power plant different volumes of water are required. This could be supplied from either rivers or underground water resources. Therefore having enough water supplies in defined vicinity can be a factor in the selection of the site.

6.Population centers:

For the same reasons as above, the site should have an enough distance from population centers. 

7.Need for power:

In general, the site should be near the areas that there is more need for generation capacity, to decrease the amount of power loss and transmission expenses.

8.Distance from airports:

 Usually, a power plant has high towers and chimneys and large volumes of gas. Consequently for security reasons, they should be away from airports

INTRODUCTION

About 70 % of energy used by India is produced in Coal fired thermal power plants. Not just India,

people all over the world heavily rely on thermal power stations. This is because of the abundant availability of coal, reliable cheap power and early advent of ‘steam engine’ technology. Though there is a lot of hue and cry over the CO2 emissions and diminishing coal reserves, coal power continues to dominate the energy sector.

Rankine cycle is the working principle of the plants all over the world. Water is boiled into steam which is super heated. This is the phase where the energy of the coal is give to the steam/water. The high pressure and high temperature steam is allowed to expand in turbines coupled with generators. Here , a part of energy is given back by the steam. Most of remaining heat is dissipated to atmosphere.

For an ideal plant, there are good number of specifications to be satisfied. The power plant must be located to a coal mine as close as possible. If the plant is dependent on the imported coal it should be closely located to the sea port. In either cases, dedicated transportation system must exist for transmission if coal reserves. Another important aspect is the ash disposable facility. Indian Coal has a high amount of ash content which turns out to be around 30 -40 %. This if not disposed properly, results in health hazards in and around the plant leading to numerous other problems.

Presently the ash is used for various industries and also used for domestic purposes. In most cases it is stored in proper places.Huge quantities of water must be required for condenser, disposal of ash and feed water circuit etc. It is therefore desirable to locate plant on side of river.

 FOR THE PROCESS AND PRINCIPLE OF THERMAL POWER PLANTS I HAD PUBLISHED PART 2 

AND

 FOR CONSTRUCTION OF PLANTS AND PARTS AND EXPLANATION OF PARTS I HAD PUBLISHED PART 3  

 

FROM ...ABDUR REHMAN CHHAPRA...