How to Calculate Room CFM – An Example You can check this example with the CFM Calculator above. Try various inputs to see how the data changes as you change room size and necessary ACH – air changes per hour. Room size: 400 square feet with 10-foot ceilings, or 4,000 cubic feet ...
Calculate the tonnage of gravel needed by converting the cubic foot volume into tons. Use the standard formula of 15 cubic feet of gravel = 1 ton of gravel. Divide the total cubic foot volume of gravel by 15 to determine the number of tons of gravel to purchase. For example, 20 cubic ...
you can calculate the shear rate for extrusion of a screw channel. This equation is starkly similar to the original shear rate formula (γ = V/x) in dividing the velocity of the moving layer by the distance between the two layers. This ...
Calculator.You can input power (W) and electricity costs in your area, and the calculator will calculate how much that particular air conditioner costs to run per hour. Formula.The mathematical background of how to calculate the electricity costs for any air conditioner. Per week, per month, ...
4.Tonnage of grinding media u can calculate on the basis of dia.length and the filling degree of mill. Thanks Pankaj fjalali13 years ago Hi, We have a similar mill. Pregrinding with hammer crusher and mono-chamber mill. Thisis what a proposed based on literture review i did...
Volume = Mass/Density.So, if you know the density in terms of pounds per barrel, simply divide the mass by the density. If not, eitheruse dimensional analysis to convert the density from the given units to pounds per barrel, orcalculate the volume in the units used for the density and ...
Howdothetaxescalculatethetaxpayable(各税种分别如何 计算应纳税额) Answer:(1)urbanmaintenanceconstructiontax. Calculationformula:taxamount=actualvalueaddedtax, consumptiontaxandtotalamountofbusinesstax*taxrate. Taxrate:7%inurbanarea,5%inCountytownand1%inother area. (2)personalincometax. Incomefromwagesandsala...
With the known tonnage (or BTUs), the SEER rating, and the HSPF rating, we can calculate almost exactly how much electricity a heat pump use (watts, kWh usage) per hour, per day, and even per month. Based on that, we can calculate how much it costs to run a heat pump per hour...
Again, using the punch radius to calculate piercing tonnage works well enough. But to predict piercing tonnage more accurately, we need to find the arc length—and not just any arc length, but the arc length that makes initial contact with a materialat the moment of bending. ...
According to The U.S. Department Of Energy recommendation for the size of room air conditioners: “…an air conditioner generally needs 20 BTU for each square foot of living space.” Based on room size, ceiling height, and other conditions, you can calculate how many BTU air conditioner you...