Engineering, 12.10.2019 05:30 inesdelude
Calculate the boiler efficiency of a boiler with the following operating data. fuel ultimate analysis (wt%): c=71.81, h=5.23, 0=10.15, n=1.2, s=3.34, ash=8.27. fuel hhv=13,082 btu/lb flue gas analysis (vol%): co2=14.2, co=0.3, 02=4.3, n2=81.2. refuse: w_r=0.115 lb/lb of coal burned flue gas temperature = 300°f ambient temperature = 85°f ambient relative humidity = 50%
Answers: 2
Engineering, 04.07.2019 18:10
The higher the astm grain-size number, the coarser the grain is. a)-true b)-false
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Engineering, 04.07.2019 19:10
Asteam is contained in a rigid tank with a volume of 1 m3. initially, the pressure and temperature are 7 bar and 500 oc, respectively. the temperature drops due to cooling process. determine: (1) the temperature at which condensation begins in °c, (2) the fraction of the total mass that has condensed when the pressure decreased to 0.5 bar. (3) the volume in m3 occupied by saturated liquid at the final state?
Answers: 3
Engineering, 04.07.2019 19:10
An engine, weighing 3000 n, is supported on a pedestal mount. it has been observed that the engine induces vibration into the surrounding area through its pedestal at the maximum operating speed. determine the stiffness of the dynamic vibration absorber spring in (n/m) that will reduce the vibration when mounted on the pedestal. the magnitude of the exciting force is 250 n, and the amplitude of motion of the auxiliary mass is to be limited to 2 mm note: in this question type-in right numbers, no decimals, no fractions, no unit. approximate to right number if needed
Answers: 3
Engineering, 05.07.2019 23:20
Which one of the following faults cause the coffee in a brewer to keep boiling after the brewing cycle is finished? a. an open circuit in the heating element b. a short circuit at the terminals c. welded contacts on the thermostat d. a leak around the gasket
Answers: 3
Calculate the boiler efficiency of a boiler with the following operating data. fuel ultimate analysi...
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