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h1. Chemical Dose Controller Design Program

This program will code for a general dose controller design and will incorporate the design into the Automated Design Tool. The doser design will be for a triple scale (three different orifices). See the [CDC research team page|Effect of Surface Tension] for a more detailed explanation of this.

h1. Orifice Size and the Dual Scale Design for the Nonlinear Alum Doser
\\ !FinalDoser.jpg|border=2px solid black,align=center,width=500pxpx|align=center,width=500pxpx,height=350pxpx!\\
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h5. Figure 1: Doser Overview


 (CDC 2009-2010)
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h5. Figure 2: Doser Draft Design (CDC 2009-2010) 
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h3. Design Process:

Expert Inputs:
HL.ChemDoserMin

User Inputs:
Q.Plant (HL.Plant)

Design Assumptions:
C.DoserScaleAlumMax

Code Calculations:
Constant head tank orifice size
Dosing tubes size to ensure orifice head loss is much greater than major loss in tubing


h3. Equations:

Orifice Equation:
{latex}\large $$ Q = K_{vc} A_{or} \sqrt {2gh} $$ {latex}  


Where, \\
{latex}\large$$ Q = Flow Rate $${latex}

{latex}\large$$ h = Head Loss $${latex}

{latex}\large$$A_{or}= Area of the Orifice $${latex}


{latex}\large$$K_{vc}= Orifice Constant $${latex}



Orifice Head Loss:
{latex}$$
h_{1Orifice}  = K_{DoseOrifice} {{V_{DoseTube}^2 } \over {2g}}
$${latex}

Major Head Loss:
{latex}$$
h_{Lmajor} = f {L\over {D}}{{V^2} \over {2g}}
$${latex}