A small oil fired steam power plant in a remote location has a nominal installed capacity of 15 MW…

A small oil fired steam power plant in a remote location has a nominal installed capacity of 15 MW…

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A small oil fired steam power plant in a remote location has a nominal installed
capacity of 15 MW plus the sum of the last two digits of your student ID number
divided by two (2). For example, if the last two digits of your student ID number are
46, then the nominal installed capacity would be [15+ (4 +6)/2] MW, i.e., 20 MW.
The plant load factor is 75% and the maximum demand is 80% of installed
capacity. The overall thermal efficiency of the power plant is 37%. The specific
enthalpy of the steam leaving the boiler and fed into the turbine is 3600 kJ/kg. The
specific enthalpy of the steam leaving the turbine is 2350 kJ/kg. The specific
enthalpy of feed water to the boiler is 225 kJ/kg. The calorific value of the fuel oil
used is 45 MJ/kg. One (1) kg of fuel oil produce 3.2 kg of carbon di oxide (CO₂).
Since the maximum demand is growing and has reached 80%, It is proposed to
supplement the oil fired power plant with wind generators of installed capacity of
10 MW. The wind generators are to be installed on a flat open space adjacent to
the existing steam power plant. The wind data obtained from the proposed site
reveals the density of air is 1.29 kg/m³ and the average wind speed is 7.2 m/s.
(a)
(b)
(c)
(d)
Determine the amount of oil required annually for the operation of the
steam power plant.
Calculate the thermal efficiency of the steam turbine in the steam power
plant.
Determine the number of wind generators required, if the rotor diameter is
80 m and coefficient of performance Cp is 0.39.
Sketch the proposed layout for the wind turbines and determine area
required.

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