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Given the enthalpy of formation for food waste to be -394.7 MJ/kmol, use the combustion reaction from Equation 4.11 to calculate its HHV (assume that the molecular formula is the same as switchgrass). Repeat this calculation for redwood (assume an enthalpy of formation of -50.7 MJ/kmol).
Equation 4.11
A coal-fired power plant is producing 10,000 kW (=10 MW) of electrical power. If the plant has a thermodynamic efficiency of 28%, how many kilograms (kg) of coal are being burned per hour to maintain this output? The heat of combustion of coal is 36,..
a 1 inch schedule 10 copper pipe carries 10 gpm of brine at -5 degrees c. the ambient air is at 20 degrees c and has a
Gold has an fcc crystal structure. The cell parameter (lattice constant) is 0.408 nm. 1) Determine the distance (d-spacing) between the [311] and [111] planes; 2) Sketch the [110] direction in the unit cell and determine the linear density of gold; 3..
a wire has a length of 7.20 10-2 m and is used to make a circular coil of one turn. there is a current of 3.60 a in the
the rotor of an electric motor has a mass of 25kg and a radius of gyration of 180mm. it is observed that 4.2 min is
determine the minimum no of teeth required on pinion in order to avoid interference which is to gear with 1 a wheel to
a differential thermocouple with sensors at the inlet and exit of a pump indicates that the temperature of water rises
Water, initially a saturated vapor at 4 bar, fills a closed, rigid container. The water is heated until its temperature is 400 degree celc. KE and PE effects can be ignored.
gaseous co2 is contained in a vertical piston-cylinder assembly by a piston of mass 50 kg and having a face area of
Calculate the standard deviation of the unknown concentration and its 95% confidence interval assuming that each of the data in the table was obtained in a single experiment.
refrigerant -134a at 800kPa and 25 C is throttled to a temperature of -20C. determine the pressure and the internal energy of the refrigerant at the final state.
a piston-cylinder device initially contains steam at 200 kpa and 200c. a linear spring is touching the piston but
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