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Residential integrated systems capable of generating electricity and providing space heating and water heating will reduce reliance on electricity supplied from central power plants. For a 2500-ft2 dwelling in your locale, evaluate two alternative technologies for combined power and heating: a solar energy-based system and a natural gas fuel cell system. For each alternative, specify equipment and evaluate costs, including the initial system cost, installation cost, and operating cost. Compare total cost with that for conventional means for powering and heating the dwelling. Write a report summarizing your analysis and recommending either or both of the options if they are preferable to conventional means.
A pot of water is boiling on a stove supplying 325 W to the water. What is the rate of mass (kg/s) vaporizing assuming a constant pressure process?
A 1 m diameter cylindrical container with hemispherical ends is used to transport gas. The internal pressure is 5 MPa and the safety factor is 2. Using the MSST determine the container thickness. The Material is such that E = 200 GPa, Sy = 430 MPa an..
Methane (CH4) is mixed with 125% theoretical air and burned.
use potential flow theory to determine the lift coefficient of a spinning baseball in terms of the forward velocity v
1. What is the fugacity coefficient for pure, superheated steam at 300oC and 1.2 MPa? 2. Benzene has a boiling point equal to 80.1oC at atmospheric pressure (1.013 bar). The molar volume of benzene is 9.004 * 10 -5 m3/gmol. What is the fugacity of ..
A constant-volume tank contains 10 lbm of ammonia initially at 30 lbf/in^2 and 80(deg)F (539.67(deg)R). The ammonia is then cooled until its pressure drops to 10 lbf/in^2. Determine its entropy change from the initial state to the final state.
there are so-called unwritten laws of engineering that recommend acceptable conduct and behavior for engineers in
a thin-walled cylindrical pressure vessel of 250 mm internal diameter and 5 mm thickness is subjected to an internal
a 6 nominal pipe size schedule 40 steel pipe has a chamfered entrance and 300 ft. long. the velocity is 20 ft per sec.
An adiabatic constant-volume combustion chamber is filled with a mixture of air and methane; lambda (AFR/AFRs) = 1.3. The initial temperature of the mixture is 25°C, and its pressure is 1 bar. After laminar combustion from a single ignition source (a..
steam at 1.6mpa and 400 degrees c is contained in a rigid box. the system is then cooled to 200 degrees c. compare the
a ground-coupled heat pump operates on the ideal vapor-compression cycle with refrigerant 134-a as the working fluid.
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