Engineering, 23.08.2019 01:20 rosepotato789
Athin walled tube is carrying hydrogen gas at a concentration of 3 kg/m^3. if the pipe wall is 6 mm thick and the diffusivity of hydrogen in the pipe material is 4.5x10^-5 m^2/s. a. what is the rate of loss (flux) of hydrogen to the outside atmosphere by diffusion through the wall? b. how much hydrogen will escape in 24 hours if the pipe is 21mm in diameter and 24 meters long?
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
Manometers are good examples of measuring instruments, nowadays they are not as common as before. a)-capacitive probe gauges b)-gravitational gauges deformation ) gauges d)-digital gauges
Answers: 1
Engineering, 04.07.2019 18:10
Ifa component is made of two or more materials with different modulus of elasticity (e), it is called a composite member and we calculate the factor·n". mention the formula for calculating n". also, ifn> 1, explain what will happen to the 1. transformed.gi) ifn 1, what will happen to the material when transformed material when
Answers: 1
Engineering, 04.07.2019 18:20
Most leaks in reciprocating air compressors can be detected and minimized by: (clo4) a)-detecting leakage areas using ultrasonic acoustic detector. b)-tightening joints and connections c)-replacing faulty equipment d)-all of the given options
Answers: 2
Athin walled tube is carrying hydrogen gas at a concentration of 3 kg/m^3. if the pipe wall is 6 mm...
Mathematics, 02.09.2020 19:01
Social Studies, 02.09.2020 19:01
Mathematics, 02.09.2020 19:01
Biology, 02.09.2020 19:01
Biology, 02.09.2020 19:01
History, 02.09.2020 19:01
Mathematics, 02.09.2020 19:01
Health, 02.09.2020 19:01