Answer:
16.46 kg/s
Explanation:
We solve this by writing an energy balance around the open feed water heater:
E,in=E,out
We know that heat transfer to surroundings and kinetic and potential energy are zero.
We can use the thermodynamic tables for saturaed liquid and steam to solve for the enthalpies.
For inlet 1:
50°C, 10 bar
For inlet 2:
steam, 10 bar, 200°C
For outlet 3:
Saturated liquid at 10 bar
We can also perform a mass balance:
We can solve the energy balance:
Solve for m₂
Answer:
The mass of the air is 0.0243 kg.
Explanation:
Step1
Given:
Stroke of the cylinder is 320 mm.
Bore of the cylinder is 280 mm.
Pressure of the air is 101.3 kpa.
Temperature of the air is 13°C.
Step2
Calculation:
Stroke volume of the cylinder is calculated as follows:
V = 0.0197 m³.
Step3
Assume air an ideal gas with gas constant 287 j/kgK. Then apply ideal gas equation for mass of the air as follows:
PV=mRT
m= 0.0243 kg.
Thus, the mass of the air is 0.0243 kg.
Explanation:
The stress strain curve for polymer describe by following type
1.Ductile
These material have good ductility and showing the yield point in the stress strain curve.These material shows necking before fracture point.These materials are steel ,aluminium etc
2. Brittle
These material are hard and does not showing yield point.They break without showing any indications.These materials are glass,cast iron etc.
3. Elastomer
These materials are showing property like rubber.Steel is more elastic as compare to rubber.
In the diagram different type of polymeric materials are showing.