Unit 2

Steam Condenser and Environmental Impacts of Thermal Power Plant

1. Explain with figure the classification of steam condenser.
2. State the difference between jet condenser and surface condenser.
3. During a trial a condenser following readings were taken:

Barometer reading – 766 mm of mercury

Actual vaccum in condenser - 710 mm of mercury

Temp of hot well – 290C

Inlet temp of cooling water - 180C

Outlet temp of cooling water - 270C

Determine:

A)    Vaccum corrected to a saturated barometer of 760 mm of mercury

B)    Vaccum efficiency

C)   Under cooling of condensate

D)   Coefficient of performance

4.     What are cooling towers? Explain different types in detail.

5.     Write a short note on :

• Scrubbers
• ESP

6.     What are the health impacts caused by mercury, oxides of sulphur and nitrogen?

7.     Explain noise pollution from TPP and its control.

8.     What are the sources and effects of thermal pollution?

9.     If air leakage occurs then what is its effect on condenser performance?

10. Define condenser and  vaccum efficiency.