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1. Six years ago, an 80-kW diesel electric set cost $160,000. The cost index for this class of equipment six years ago was 187 and is now 194. The cost-capacity factoris 0.6.
(a) The plant engineering staff is considering a120-kW unit of the same general design to power a small isolated plant. Assume we want to add a pre compressor, which (when isolated and estimated separately) currently costs $18,000. Determine the total cost of the 120-kW unit.
(b) Estimate the cost of a 40-kW unit of the same general design. Include the cost of the $18,000 pre compressor.
100 grams moles of the feed with composition of 40% methane, 50% chlorine, and 10% nitrogen, are fed to the reactor every hour, the conversion of the limitining reactant is 67%. Determine which species is the limiting reactant using appropriate calcu..
the two sides of a v-shaped water trough are hinged to each other at the bottom where they meet as shown in figure q1
an adiabatic gas turbine expands air at 3447 kpa and 427degc to 415 kpa and 120degc. if the volume flow rate at the
water is boiled at 90 c by a horizontal brass heating element of diameter 7 mm. determine the surface temperature of
Determine the internal energy change as saturated liquid steam at 60?F goes to a two phase mixture of quality 0.40 at 60?F. Provide answers in SI units. Determine the final fluid phase and the enthalpy change.
after 10 lbhr of the oil is removed from the potato chips in the separation unit what is the mass fraction of oil on
Moist air at 35 degree C, 3 bar, and relative humidity 30% (State 1) enters a nozzle with a velocity of 50 m/s and expands in a reversible and adiabatic process such that the moist air leaving the nozzle is about to condense (State 2). Calculate the ..
the free convection heat transfer coefficient on a thin hot vertical plate suspended in still air can be determined
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on a cold winters day it is 30degf outside. yet the temperature of the outside surface of the mechanical engineering
The stators in a gas turbine are designed to increase the kinetic energy of the gas passing through them adiabatically. Air enters a set of these nossels at 270 psia and 795 F with a velocity of 97 ft/s and exists at 200 psia and 550 F. Calculate the..
a refrigerator operates with a coefficient of performance of 4.2 and requires an electrical input of 700 w. determine
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