Question

Review the two videos (1) “Steam Power Plant” and (2) Gas Turbine. For each one, identify at least three examples of the design for each of the following criteria:

1. Energy performance (e.g. improved efficiency, higher power output, ...)

2. Economic considerations (reduced cost)

3. Environmental considerations (reduced emissions, etc.).

* Link of video 1 - https://youtu.be/xokHLFE96h8

Click on 1st video (how a thermal power plant works)

* Link of video 2 - https://youtu.be/GF-70yncAVY

Click on industrial gas turbine working principle

Answer 1

A) Thermal power plant:

1)Energy performance :

i)Coal pulverizer : to burn the coal efficientye

ii) Air preheater

iii) Feed water heater

iv) Superheater

2) Economic consideration :

i) Natural draught chimney

ii) Transportation of coal by railway

iii) condenser : (which converts steam again into water)

3) Environmental consideration :

i) Scrubbers to reduce sulphur dioxide and fly ash from exhaust

ii)gypsum recycling

iii)fly-ash recycling.

B) Gas turbine power plant

1) Energy performance :

i) Compact core model produces energy efficiently

ii)use of axial compressor gives higher pressure ratio

iii)advanced can combuster premix air-fuel mixture homogenously before combustion chamber

2) Economic consideration :

i) exhaust from turbine is utized in gas generator.

ii)single shaft Model saves 27% of components

3) Environmental consideration :

i)high tech combuster burns fuel and air with very low emission

ii) Low temperature exhaust gases.