No. The pressure drop remains the same. The only thing that could led to a smaller pressure drop after 1 (or more) year, is the internal surface friction coefficient. But this coefficient does not change in a measurable way. Perhaps small particles are re-arranged inside the pipe, but the coefficient remains the same. So does pressure drop.
check a company called Vahterus Oy from German. we planned to install and replace all heat exhanger in our plant and boiler. One boiler economiser can reduce USD100K per year and PBT Margin is 4% yearly for 10 years. The saving comes from reduce usage of NG of 46sm3/hr
1st year about 75,000 2nd year about 150,000 and a full time good work will make a easy 300,000 a year some of the best get 500,000 a year
Fatigue failure is the progressive failure of a material when it is repeatedly strained below its breaking point but at a level suffucient to cause fatigue. See Wikipedia article in links for lots more details. To avoid fatigue failure either: Reduce Stress Concentration (Kt) of your design. Use large radius or blend radius. For a flat plate with a hole, you can calulate the Kt. Surprisingly, you can drill a hole on each side of a hole to reduce the Kt---but it could reduce the overall static strength. Also, alter the bolt or rivet patterns. If the fatigue stress cycles from zero stress to peak stress, you can reduce the fatigue effect by raising the mean stress level. This is why it is helpful to increase the torque on a bolt. The higher torque increases the stress on the bolt so the stress will not drop to zero. Apply Shot Peen to finish of the part. This will remove any imperfections on the finish and will apply a compressive layer that helps keep a crack from initiating. There are other finishes that will also do the same. Perform a fatigue analysis using standard fatigue S-N curves and calcuate the predicted Fatigue Life of the part under the loads and spectrum that you plan for your part. Divide the calculated life by 4 and use this as the fatigue life for the part and plan to remove the part from service when it reaches this time. Suspect that since this question is in the mechanical engineering section the below answer is not the one the questioner was looking for but since it is also true..... Try not to do the same repetitive things too often. If you type on a keyboard year after year that part of your mind is going to tire out. Try new activities. Dont do the same thing all day. Get good sleep. Eat good food. Lots of fluids and fruit.
About maybe twice a year
It is a 2 1/2 ton packaged heat pump. You can tell the year and month made by the serial number. The first two digits are the year and the next two are the month it was manufactured. All goodman and Amana units are this way.
The Alaskan oil pipeline is a 48" pipe that runs 800 miles from the Alaskan North Slope (where the oil is removed from the ground) to Valdez (where it can be loaded on ships year around because the bay at Valdez doesn't freeze over in winter).
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Boardwalk Pipeline Partners L.P. (BWP)had its IPO in 2005.
El Paso Pipeline Partners LP (EPB)had its IPO in 2007.
1977. See related link.
Between 50k and 70k a year on the average. I've been a pipeline controller for 7 years. what kind of qualifications do you need? i am a petroleum supply specialist in the army
4
the total losses for the year ...
Tax loss carry forward or Carry forward of a loss is basically a provision in certain tax laws which allows a business to carry forward operating losses from the current year and adjust them against the profit of the next year. This helps to reduce tax liability.
Example sentence - I would like to reduce my tax liability by 30% this year.
$ 3,000.00
Yes, you can zero out the winnings with the losses. Though the losses need to be in the same tax year.