Engineering, 18.12.2019 06:31 19thomasar
Consider two very large parallel plates. the bottom plate is warmer than the top plate, which is held at a constant temperature of t1 330 k. the plates are separated by l 0.1 m, and the gap between the two surfaces is filled with air at atmospheric pressure. the heat flux from the bottom plate is q 250 w/m2 . (a) determine the temperature of the bottom pl
Answers: 3
Engineering, 03.07.2019 14:10
Amass of m 1.5 kg of steam is contained in a closed rigid container. initially the pressure and temperature of the steam are: p 1.5 mpa and t 240°c (superheated state), respectively. then the temperature drops to t2= 100°c as the result of heat transfer to the surroundings. determine: a) quality of the steam at the end of the process, b) heat transfer with the surroundings. for: p1.5 mpa and t 240°c: enthalpy of superheated vapour is 2900 kj/kg, specific volume of superheated vapour is 0. 1483 m/kg, while for t 100°c: enthalpy of saturated liquid water is 419kj/kg, specific volume of saturated liquid water is 0.001043m/kg, enthalpy of saturated vapour is 2676 kj/kg, specific volume of saturated vapour is 1.672 m/kg and pressure is 0.1 mpa.
Answers: 3
Engineering, 04.07.2019 18:10
Air is to be cooled in the evaporator section of a refrigerator by passing it over a bank of 0.8-cm-outer-diameter and 0.4-m-long tubes inside which the refrigerant is evaporating at -20°c. air approaches the tube bank in the normal direction at 0°c and 1 atm with a mean velocity of 4 m/s. the tubes are arranged in-line with longitudinal and transverse pitches of sl- st 1.5 cm. there are 30 rows in the flow direction with 15 tubes in each row. determine (a) the refrigeration capacity of this system and (b) pressure drop across the tube bank. evaluate the air properties at an assumed mean temperature of -5°c and 1 atm. is this a good assumption?
Answers: 1
Engineering, 04.07.2019 18:10
Condition monitoring is a major component of. (clo4) a)- predictive maintenance. b)-preventive maintenance c)-proactive maintenance d)-reactive maintenance.
Answers: 1
Engineering, 04.07.2019 18:10
Courses that are developed by subject matter experts, internal or extemal to the college or university. these programs are marketed by the school (clo2) marks a)-vocational schools b)-vendor training c)-colleges & universities d)-continuing education programs
Answers: 2
Consider two very large parallel plates. the bottom plate is warmer than the top plate, which is hel...
History, 01.02.2021 23:50
Mathematics, 01.02.2021 23:50
Arts, 01.02.2021 23:50
Biology, 01.02.2021 23:50
Mathematics, 01.02.2021 23:50
Mathematics, 01.02.2021 23:50
Mathematics, 01.02.2021 23:50
Mathematics, 01.02.2021 23:50
Mathematics, 01.02.2021 23:50
Computers and Technology, 01.02.2021 23:50