The simplified heat balance diagram of a real coal fired power plant is given be

Question

The simplified heat balance diagram of a real coal fired power plant is given bellow.

What is the power output of the plant?

The power plant is to undergo solar modification using Solar Aided Power Generation (SAPG) technology.

There are two solar modification plans:

a) solar concentration collectors are used to generate solar heat to replace extraction steam A

b) Simple solar collectors are used to generate solar heat to replace extraction steam F only.

What is the minimum solar fluid temperature (out of the collectors) required for plan a) and b), respectively, if the minimum temperature difference required in heat exchanger is 5oC?

Explanation / Answer

Power output of turbine = 3400.3*407.71 - 3058.5*407.71 + 3531.9*363.105 - 3031.5*318.529 - 3299.6*24.832 - 3031.5*21.206 + 3031.5*318.529 - 2396.9*277.709 - 2561.1*18.487 - 2458.4*6.744 - 2818.2*16.045

                                = 500798.933

power consumed by pump = 189.9*285.36 - 187.6*285.36 +

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