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  1. Steam in the condenser of a thermal power plant is to be condensed at a temperature of 30°C with cooling water which enters the tubes of the condenser at 14°C and exits at 22°C. The total surface area of the tubes is 50 m2, and the overall heat transfer coefficient is 2000 W/ m2. The heat transfer (in MW) to the condenser is ______(correct to two decimal places).
    1. 1.154
    2. 1.150
    3. 1.159
    4. 1.15
Correct Option: A

Condenser is given.

LMTD =
θ1 - θ2
In
θ1
θ2

=
16 - 8
= 11.54°C
In
16
8

Q = UA (LMTD)
= 2000 × 50 × 11.54 = 1.154 MW



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