Engineering, 04.12.2019 04:31 dnation94
Water is the working fluid in an ideal rankine cycle. saturated vapor at 1000psia enters the turbine. the condenser pressure is 1 psia and the working fluid exits the condenser at saturated liquid. the heat removed from the working fluid in the condenser is accepted by a cooling water stream (sub cooled liquid) that undergoes a change in temp from 60°f to 80°f. determine
(a) the back work ratio
(b) the net work per unit mass of working fluid
(c) the heat accepted in the boiler per pound of working fluid,
(d) the thermal efficiency
(e) the ratio of cooling water mass flow rate to working fluid mass flow rate.
Answers: 1
Engineering, 04.07.2019 18:10
Different types of steels contain different elements that alter the characteristics of the steel. for each of the following elements, explain what the element does when alloyed with steel.
Answers: 2
Engineering, 04.07.2019 18:10
Apipe with an outside diameter of 15 cm is exposed to an ambient air and surrounding temperature of -20°c. the pipe has an outer surface temperature of 65°c and an emissivity of 0.85. if the rate of heat loss from the pipe surface is 0.95 kw per meter of length, the external convective heat transfer coefficient (h) is: (a) 12.5 w/m"k (b) 18.6 w/mk (c) 23.7 w/mk (d) 27.9 w/mk (e) 33.5 w/mk
Answers: 1
Engineering, 04.07.2019 18:10
At 12 noon, the count in a bacteria culture was 400; at 4: 00 pm the count was 1200 let p(t) denote the bacteria cou population growth law. find: (a) an expression for the bacteria count at any time t (b) the bacteria count at 10 am. (c) the time required for the bacteria count to reach 1800.
Answers: 1
Engineering, 04.07.2019 18:10
Atmospheric air has a temperature (dry bulb) of 80° f and a wet bulb temperature of 60° f when the barometric pressure is 14.696 psia. determine the specific humidity, grains/lb dry air. a. 11.4 c. 55.8 d. 22.5 b. 44.1
Answers: 1
Water is the working fluid in an ideal rankine cycle. saturated vapor at 1000psia enters the turbine...
Physics, 12.05.2020 15:57
Computers and Technology, 12.05.2020 15:57
Chemistry, 12.05.2020 15:57
Chemistry, 12.05.2020 15:57
Mathematics, 12.05.2020 15:57
Mathematics, 12.05.2020 15:57
Mathematics, 12.05.2020 15:57
Mathematics, 12.05.2020 15:57
Mathematics, 12.05.2020 15:57