A steel ship deck plate is 30 mm thick and 12 m wide. It is loaded with a nominal uni- axial tensile stress of 70 MPa. It is ope
rated below its ductile-to-brittle transition temperature with KIc equal to 38.3 MPa. If a 65-mm-long central transverse crack is present, estimate the tensile stress at which catastrophic failure will occur. Compare this stress with the yield strength of 240 MPa for this steel.
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Answer:
1.
2.
3. carbon emission = 0.297 kg/kWh[/tex]
4. carbon-dioxide emission = 1.089 kg/kWh
5. Min flow of cooling water = = 1457.14 kg/kWh
Given:
Heat Rate = 10,800 kJ/kWh
Heating value = 27,300 kJ/kg
Solution:
In order to calculate the plant efficiency, [rex]\eta_{p}[/tex]
Heat rate in coal fired steam power plant =
Therefore,
Now,
To calculate mass of coal per kWh, :
Now,
Rate of emission carbon and carbon-dioxide from the plant:
In accordance to the question, 75% of the bituminous coal being burned is carbon, thus carbon emission is given by:
carbon emission =
carbon emission =
Now, for carbon-dioxide emission:
Since, molecular weight of carbon-dioxide = 44 kg
Thus carbon-dioxide emission:
The minimum flow of cooling water per kWh if the allowance in temperature is :
Answer:
<em><u>note:</u></em>
<em><u>please find the attached code</u></em>
