How do you calculate charge balance?

Charge Balance -The sum of positive charges equals the sum of negative charges in solution (Electroneutrality).

How do you calculate mass balance and energy balance?

MA = (mAP + mAW + mAU) where mAU is the unknown loss and needs to be identified. So the material balance is now: Raw Materials = Products + Waste Products + Stored Products + Losses where Losses are the unidentified materials. Just as mass is conserved, so is energy conserved in food-processing operations.

How is mass balance example?

One such example is in cooling towers, where water is pumped through a tower many times, with only a small quantity of water drawn off at each pass (to prevent solids build up) until it has either evaporated or exited with the drawn off water. The mass balance for water is M = D + W + E.

What is mass balance equation?

Mass balance equation simply states that total mass in any system is always conserved. That is, Total mass in = Total mass out + Total mass accumulated in the system. The mass balance can be performed for different components of the inlet and outlet streams.

How do you write energy balance equations?

The complete energy equation looks like this:

1. Energy balance = energy input – energy output.
2. Weight gain = energy input > energy output.
3. Weight loss = energy input < energy output.

How do you write an energy balance?

It is important to note that the rate of work consists of both ‘rate of flow’ work and shaft work: W ˙ = W ˙ P V + W ˙ S . Rate of flow work, W ˙ P V : This work results from the displacement of fluid during flow and is similar to the pressure-volume work associated with the compression or expansion of a closed system.

What is mass balance diagram?

Sometimes heat and mass balance is not a separate document but appears alongside the Process Flow Diagram (PFD). A heat and mass balance sheet represents every process stream on the corresponding PFD in terms of the process conditions. Normally a heat and mass balance sheet reports following data for a process stream.

What is the general balance equation?

This observation is expressed mathematically in Equation 1.01, the General Balance Equation. For a defined system and a specified quantity: Accumulation = Input. – Output. + Generation – Consumption.