Recent content by Erik S

The pump is rated at 10MW, the produced flow is calculated using Mannings equation with given Mannings constant. This is because I don't have any information on the volumetric displacement/ rpm of the pump

I am trying to figure out the efficiency of a reversible hydraulic generator/pump station that will generate electricity when the price is high, and pump water up into the reservouar with power from the grid when electricity is cheap. I have calculated the following information for the pump and...

Hi chet. There is no insulation, oil against stainless steel against sand. Surface area of each "wall" that transfers the heat is 0.42m^2 I am trying to calculate if the sand will conduct more heat away than open air, or if it will have an opposite, insulating effect The sand is...

Just a quick look at the problem and I would expect it to be the same result at any give cooled temp. 1 cube will melt fast yes, 8 cubes will melt less each, but 8 cubes gives 48 faces that are exposed to the juice, so a little melt off each will quickly Equal the same mass of the one melted...

I am setting up a hydraulic system on a cable laying machine. We don't have much space for the tank, and I am thinking of constructing it on the "wall" og a big 1m^3 stainless steel sand holder. That would make the tank With 5 faces in open air, 1 face With sand on the opposite side. I am...