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A natural gas-fired furnace in a textile plant is used to provide steam at 250°C. At times of high demand, the furnace supplies heat to the steam at a rate of 30 MJ/s. The plant also uses up to 10 MW of electrical power purchased from the local power company. The plant management is considering converting the existing process plant into a cogeneration plant to meet both their process-heat and power requirements. Your job is to come up with some designs. Designs based on a gas turbine or a steam turbine are to be considered. First decide whether a system based on a gas turbine or a steam turbine will best serve the purpose, considering the cost and the complexity. Then propose your design for the cogeneration plant complete with pressures and temperatures and the mass flow rates. Show that the proposed design meets the power and process-heat requirements of the plant.
a horizontal force of 80 n acts on a mass of 6 kg resting on a horizontal surface. the mass is initially at rest and
A swimmer with body mass 50 kg is pulled from the ocean with hypothermia. Her body temperature is 27°C. She is connected to a shell and tube heat exchanger. Blood flow through the device is kept constant at 1,000 ml/min. The perfusionist adjusts the ..
A uniform linear charge density of 4 nC/m is distributed along the entire x axis. Consider a spherical (radius = 5 cm) surface centered on the origin. Determine the electric flux through this surface.
A counter flow cooling tower operates steadily with 100 liter/sec of water that is cooled from 30 C to 25 C. The ambient air is at sea level pressure, 25 C dry bulb and 20 C wet bulb temperature. The ratio of mass flow rate to air flow rate is 1.0.
a rubber stopper covers the drain in your bathtub. estimate the force that the water exerts on the stopper. list all
water at 200 kpa and 10 degree celcius enters a mixing chamber at a rate of 150 kgmin where it is mixed steadily with
consider steady heat conduction in a plane wall whose left surface node 0 is maintained at 40 degrees c while the right
Mention the main design measures as to enhance the energy performance of the hotel in Pilio. Why do you think most responsibilities remain with the Client under CDM regulations
consider a house whose walls are 4 m high and 12 m long. two of the walls of the house have no windows while each of
distillation of multicomponent alcohol mixture. a feed of 30 mol methanol a 20 ethanol b 15 n-propanol c and 35
The entrance is inward projecting. What flow will be expected if the gate valve is one-half open?
Neglecting radiation heat loss, calculate the heat flux qe" that must be supplied by the electrical tape to ensure a uniform fluid temperature.
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