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The inner and outer surfaces temperatures of a 0.5-cm thick 2-m x 2-m window glass in winter are 100C and 30C, respectively, if the thermal conductivity of the glass is 0.78 W/m.K, determine the amount of heat loss through the glass over a period of 5 h. what would your answer be if the glass were 1 cm thick?
Water enters a hydraulic turbine through a 30-cm-dia pipe. The pressure drop in the turbine is measured by a mercury manometer to be 1.2 m. For a combined turbine-generator efficiency of 83%, determine the net electric output. Disregard the effect..
A Brayton cycle uses air and produces a net work of 14000 Btu/s with an inlet state of 60°F,
a spring-mass is excited by a force f0sinomegat. at resonance the amplitude is measured to be 0.58 cm. at 0.80 resonant
a 0.5-in.-diameter steel e 30000 ksi bolt 1 is placed in a copper tube 2 as shown in fig. p5.47. the copper e 16000
Bypass air exits at 600 m/s while combustion air exits at 1000 m/s. What is the thrust in kN of this engine?
design a process for the manufacture of 106 kg per year of mayonnaise. the shelf life of the product is expected to be
Taking the temperature of the surrounding surfaces to be 20°C also, determine the rate of heat loss from the steam pipe.
a spherical balloon contains 2 kg of water at 230 degrees c 400 kpa the specific volume is 0.5951 m3kg. the balloon
initially 0.05 kg of air is contained in a piston-cylinder device at 200 degc and 1.6 mpa. the air then expands at
calculate the overall efficiency the heat rate mw and the total fuel rate kgs of a combined-cycle power plant 1 if no
The die characteristic is Q_x = 0.0015p where p is the head pressure in psi. Determine the flight angle that maximizes the flow rate Q_x and graph it.
What is the nozzle-exit-to-throat area ratio for case (a)? The gross thrust is the contribution to engine thrust made by the exhaust nozzle only.
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