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Helium is used in a combined cycle power plant as the working fluid in a simple closed gas turbine serving as the topping cycle for a vapor power cycle. A nuclear reactor is the source of energy input to the helium. The figure below provides steady-state operating data. Helium enters the compressor of the gas turbine at 200 psi, 180°F with a mass flow rate of 8x105lbm/hr and is compressed to 800 psi. The isentropic efficiency of the compressor is 80%. The helium then passes through the reactor with a negligible decrease in pressure, exiting at 1400°F. Next the helium expands through the interconnecting heat exchanger. A separate stream of liquid water enters the heat exchanger and exits as saturated vapor at 1200 psi. The vapor is superheated before entering the turbine at 800°F, 1200 psi. The steam expands through the turbine to 1 psi and a quality of 0.9. Saturated liquid exits the condenser at 1 psi. Cooling water passing through the condenser experiences a temperature rise from 60°F to 90°F. The isentropic pump efficiency is 100%. Stray heat transfer and kinetic and potential energy effects can be nelected. Determine:
(a) The mass flow rates of the steam and cooling water, each in lbm/hr.
(b) The net power developed by the gas turbine and the vapor power cycles, in Btu/hr.
(c) The thermal efficiency of the combined cycle.
Package Design Brief: Assume you are the packaging engineer for a large consumer products company. In this company, the Packaging Design Briefs are initiated by the marketing group and forwarded to the Package Engineering group.
Define dynamic viscosity, Determine the centroid, Pressure due to the height of liquid, Advantage of changing the liquid, Calculate the total moment about the hinge of the seal gate.
DOF system and Find the differential equation describing the system
Write a paper on Boyle's law and describe Compression and Combustion stroke . Also explain Charles's law and illustrate SI engine and CI engine.
To Verify the law for parallelogram of forces, law for triangle of forces and law of polygon of forces. These laws are very useful to calculate unknown forces in very short time.
What is the discharge revised discharge pressure of the compressor.
The role of IFRS in both developing and developed capital markets.
Wind turbines are becoming more and more common as a method of energy production, wind turbines by their very nature are dynamic and are subject to and create their own internal and external kinematics and kinetics.
8 x product engineering and design review (week 2 – 12), ~3 pages per item which must contain a brief description of the product then delve into concepts such as materials selection, manufacturing methods, life cycle analysis, recyclability and overa..
Design of absorption column and the cooler. Process design of other units should be completed along with pipe sizes.
Determine maximum total bending moment (static plus dynamic) of the beam under steady-state conditions.
Determine the magnitude of the horizontal and vertical components of the force of the water on the gate.
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