(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

The flowrate leaving the tank is regulated by a partially open valve, You may assume that the pressure drop in the exit pipe system is across the valve itself.

The cross sectional area is 1m^{2}. At steady state, the water level inside the tank is measured to be 1m for a feed stream flowrate of 0.5 m^{3}/min.

Since the water into the tank has a temperature of 20*C, then the temperature out is also 20*C (assuming no heat losses)

Develop a MathCAD solution to find how the level and temperature changes when the flow and temperature of the feed stream changes

QuestionWhat equation do I need for this?

I have one for the liquid level but don't know how to combine it with temperature, some sort of energy balance.

2. Relevant equations

I have this, describing the liquid level in the tank

dh/dt = 1/A (F_{1}+F_{2}-k(sqrt h))

3. The attempt at a solution

I can't do it , all I could get is the above equation

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# Homework Help: Unsteady state problem - draining from a tank

Can you offer guidance or do you also need help?

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