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# Calculations and Tips

## Estimating Heat Capacities for Solutions with D...

Nov 08 2010 01:40 PM | Chris Haslego in Calculations and Tips

Often times it is necessary to find the heat capacity for solutions with dissolved solids. A quick estimation method was proposed by Dimoplon in 1972. The proposed expression is:Cp(soln) = W1 Cp(solid) + W2 Cp(water)Eq. (1)where:Cp(soln) = Heat capacit...

## Experienced Based Rules of Chemical Engineering

Nov 08 2010 01:00 PM | Chris Haslego in Calculations and Tips

Experience is typically what turns a good engineer into a great engineer. An engineer that can look at a pipe and a flowmeter and guess the pressure drop within 5%. Someone who can at least estimate the size of a vessel without doing any calculations....

## Measure Discharge Flow from a Horizontal Pipe

Nov 08 2010 01:30 PM | Chris Haslego in Calculations and Tips

Ever been confronted with the exit of a horizontal pipe full of flow?  Wouldn't it be nice if there was a simple method to determine the flow rate in the pipe?  Here's a method that may help. This works surprisingly well and is very easy to do. All mea...

## Solving Integral Equations in MS Excel

Nov 08 2010 01:10 PM | Steve Hall in Calculations and Tips

TankVolume, as it appears in the online store, calculates the liquid volume of partially filled tanks, horizontal or vertical, with various types of heads.  One of these, the torispherical head, requires that integral equations be solved.  This article...