Gas Turbine Power Plant With Simple Layout

Gas Turbine Power Plant With Simple Layout

The simplest gas turbine power plant layout and basic information of it is described in this article. This is the general layout of gas turbine power plant. All the description is described below in detail.

Gas Turbine Power Plant With Simple Layout

A gas turbine plant may be defined as a plant in which the principal prime-mover is of the turbine type and the working medium is permanent gas.

A simple gas turbine plant consists  the following below equipment:

✓Turbine.

✓A compressor mounted on the same shaft or coupled to the turbine.

✓The combustor.

✓Auxiliaries such as starting device, auxiliary lubrication pump, fuel system, oil system and
the duct system etc.

A modified plant may have in addition to above an intercooler, regenerator, a preheater etc.

The working fluid is compressed in a compressor which is generally rotary, multistage type.

Heat energy is added to the compressed fluid in the combustion chamber.

This high energy fluid, at high temperature and pressure, then expands in the turbine unit thereby generating slower.

Part of the power generated is consumed in driving the generating compressor and accessories and the rest is utilized in electrical energy.

The gas turbines work on open cycle, semi-closed cycle or closed cycle.

In order to improve efficiency, compression and expansion of working fluid is carried out in multi-stages.

Gas Turbine Power Plant Advantages :

Construction wise a gas turbine power plant is much simpler than a steam turbine power plant.

Gas turbine power plant is smaller than that of a steam turbine power plant.

It does not have any boiler like component. So, the accessories associated with the boiler are absent here.

It does not deal with steam. So, it does not require any condenser.

A gas turbine power plant can more instantly be started than an equivalent steam turbine power plant.

Layout And Working of Diesel Engine Power Plant

Layout And Working of Diesel Engine Power Plant

In this article general layout and working of diesel engine power plant is well described. Operation of diesel engine power plant is simple in understanding which is explain below.

Layout And Working of Diesel Engine Power Plant

Diesel engine power plants are installed where supply of coal and water is not available in sufficient quantity or where power is to be generated in small quantity or where standby sets are required for continuity of supply such as in hospitals, telephone exchanges, radio stations and cinemas.

These plants in the range of 2 to 50 MW capacity are used as central stations for supply authorities and works and they are universally adapted to supplement hydro-electric or thermal stations where stand-by generating plants are essential for starting from cold and under emergency conditions.

In several countries, the demand for diesel power plants is increased for electric power generation because of difficulties experienced in construction of new hydraulic plants and enlargement of old hydro-plants.

A long term planning is required for the development of thermos and hydro-plants which cannot keep the pace many times with the increased demand by the people and industries.

The diesel units used for electric generation are more reliable and long-lived piece of equipment compared with other types of plants.

Diesel Power Plant Layout :

• Diesel engine
• Fuel system
• Air filter and super charger
• Engine starting system
• Governing system
• Lubrication system
• Exhaust system
• Cooling system

Advantages Of Diesel Power Plant :

• Cost is less
• Require less space
• Easy to design
• Less cooling water require
• Can be start and stop quickly
• Less standby losses

Disadvantages Of Diesel Power Plant :

• More Noisy
• Not supply overload
• Operating cost is high
• Maintenance is high
• Can't be very big size
• Life is less 

Components of a Diesel Power Plant

The essential components of a diesel power plant are shown title image.

Power Generation MCQ type Questions And Answer

Power Generation MCQ type Questions And Answer

MCQ's of electrical power generation are available here in this post, in which all the types of basic questions are covered, so which is very useful for competitive exams.

Power Generation MCQ type Questions And Answer

Breather present in transformer is used to____?

(A) Absorb atmospheric moisture

(B) Prevent insulation failure

(C) Cooling

(D) All of these

Ans. (A) Absorb atmosphere moisture

Q.1

In India largest thermal power station
is located at

(a)Kota

(b)Sarni

(c)Chandrapur

(d)Neyveli

Ans.

(c)Chandrapur

Q.2

The percentage O2 by weight in atmospheric air is

(a)18%

(b)23%

(c)77%

(d)79%

Ans.

(b)23%

Q.3

The percentage O2 by volume in atmosphere air is

(a)21%

(b)23%

(c)77%

(d)79%

Ans.

(a)21%

Q.4

The proper indication of incomplete combustion is

(a)high CO content in flue gases at exit

(b)high CO2 content in flue gases at exit

(c)high temperature of flue gases

(d)the smoking exhaust from chimney

Ans.

(a)high CO content in flue gases at exit

Q.5

The main source of production of biogas is

(a)human waste

(b)wet cow dung

(c)wet livestock waste

(d)all above

Ans.

(d)all above

Q.6

India's first nuclear power plant was
installed at

(a)Tarapore

(b)Kota

(c)Kalpakkam

(d)none of the above

Ans.

(a)Tarapore

Q.7

In fuel cell, the _____energy is converted into electrical energy.

(a)mechanical 

(b)chemical

(c)heat

(d)sound

Ans.

(b)chemical

Q.8

Solar thermal power generation can be
achieved by

(a)using focusing collector or heliostats

(b)using flat plate collectors

(c)using a solar pond

(d)any of the above system

Ans.

(d)any of the above system

Q.9

The energy radiated by sun on a bright
sunny day is approximately

(a)700W/m

(b)800W/m2

(c)1 kW/m2

(d)2 kW/m2

Ans.

(c)1 kW/m2

Q.10

Thorium Breeder Reactors are most
suitable for India because

(a)these develop more power

(b)its technology is simple

(c)abundance of thorium deposits are available in India

(d)these can be easily designee

Ans.

(c)abundance of thorium deposits are available in India

Q.11

The overall efficiency of thermal power plant is equal to

(a)Rankine cycle efficiency

(b)Carnot cycle efficiency

(c)Regenerative cycle efficiency

(d)Boiler efficiency x turbine efficiency x generator efficiency

Ans.

(d)Boiler efficiency x turbine efficiency x generator efficiency

Q.12

Rankine cycle efficiency of a good steam
power plant may be in the range of

(a)15 to 20 percent

(b)35 to 45 percent

(c)70 to 80 percent

(d)90 to 95 percent

Ans.

(b)35 to 45 percent

Q.13

Rankine cycle operating on low pressure limit of p1 and high pressure limit of p2

(a)has higher thermal efficiency than
the Carnot cycle operating between
same pressure limits

(b)has lower thermal efficiency than
Carnot cycle operating between same
pressure limits

(c)has same thermal efficiency as car-
not cycle operating between same
pressure limits

(d)may be more or less depending upon
the magnitude of p1 and p2

Ans.

(a)has higher thermal efficiency than
the Carnot cycle operating between
same pressure limits

Q.14

Rankine efficiency of a steam power plant

(a)improves in summer as compared to
that in winter

(b)improves in winter as compared to
that in summer

(c)is unaffected by climatic conditions

(d)none of the above

Ans.

(b)improves in winter as compared to
that in summer

Q.15

Carnot cycle comprises of

(a)two isentropic processes and two
constant volume processes

(b)two isentropic processes and two.
constant pressure processes

(c)two isothermal processes and two
constant pressure processes

(d)none of the above

Ans.

(b)two isentropic processes and two.
constant pressure processes