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    Chemical Dosing Calculation

    Uploaded by

    AJU JOY
    The document provides calculations for chemical dosing requirements for a 45 cubic meter chilled water treatment system. It calculates dosages and quantities needed for cleaning chemicals, passivation chemicals, initial treatment chemicals, and yearly maintenance chemicals. It also sizes the automatic dosing tank capacity at 60 liters and dosing pump capacity at 1.1 liters per hour, which are sufficient to meet the system's chemical dosing needs.

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    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd

    Chemical Dosing Calculation

    Uploaded by

    AJU JOY
    126 views3 pages
    The document provides calculations for chemical dosing requirements for a 45 cubic meter chilled water treatment system. It calculates dosages and quantities needed for cleaning chemicals, passivation chemicals, initial treatment chemicals, and yearly maintenance chemicals. It also sizes the automatic dosing tank capacity at 60 liters and dosing pump capacity at 1.1 liters per hour, which are sufficient to meet the system's chemical dosing needs.

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    chemical dosing calculation

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    chemical dosing calculation

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    The document provides calculations for chemical dosing requirements for a 45 cubic meter chilled water treatment system. It calculates dosages and quantities needed for cleaning chemicals, passivation chemicals, initial treatment chemicals, and yearly maintenance chemicals. It also sizes the automatic dosing tank capacity at 60 liters and dosing pump capacity at 1.1 liters per hour, which are sufficient to meet the system's chemical dosing needs.

    Copyright:

    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd
    Download as pdf or txt
    126 views3 pages

    Chemical Dosing Calculation

    Uploaded by

    AJU JOY
    The document provides calculations for chemical dosing requirements for a 45 cubic meter chilled water treatment system. It calculates dosages and quantities needed for cleaning chemicals, passivation chemicals, initial treatment chemicals, and yearly maintenance chemicals. It also sizes the automatic dosing tank capacity at 60 liters and dosing pump capacity at 1.1 liters per hour, which are sufficient to meet the system's chemical dosing needs.

    Copyright:

    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd
    Download as pdf or txt
    of 3

    Water Bird Continuation Sheet

    DOSAGE CALCULATIONS/SIZING CALCULATIONS


    CHILLED WATER TREATMENT SYSTEM

    Total System Volume : 45 M3

    Chemical Quantity Calculation

    Cleaning Chemical

    Neutral pH cleaner : Accepta 2877

    Dosage : 1 kg/m³
    Quantity required for 45 m³ : 45 kgs.

    Passivation Chemicals

    Silicate Based Corrosion Inhibitor : Accepta 894

    Dosage : 0.1 kgs/m³


    Quantity required for 45 m³ : 4.5 kgs

    Initial Treatment Chemicals

    Corrosion Inhibitor : Accepta 2337

    Dosage : 3 kgs/m³
    Quantity required for 45 m³ : 135 kgs

    Microbiocide : Accepta 2886

    Dosage : 0.1 kg/m³


    Quantity required for 45 m³ : 4.5 kgs

    Yearly Maintenance Quantity

    System Volume : 45 m³
    Average loss per month :2%
    : 0.9 m³/month
    Water Bird Continuation Sheet

    Quantity of Accepta 2337 required = 0.9 m³ x 12 (months in a year) x 3 (dosage rate)


    = 32.4 kgs. / year
    = 0.08876 ltrs/day
    = 0.00369 ltrs/hr

    Biocide Accepta 2886 addition is once in two months.

    Dosage : 4.5 kgs once in two months


    Quantity required for one year : 4.5 kgs x 5 times
    : 22.5 kgs.

    Proposed Items

    Automatic dosing tank capacity : 60 ltr


    Dosing pump capacity : 1.1 ltrs/hr. @ 16Bar
    Max. Working pressure : 16 bar
    Manual dosing pot capacity : 25 ltr (Sufficient as per system volume)

    Manual Dosing Pot Calculation

    Manual dosing pot is used for the periodical dosing of Micro biocide.

    System Volume : 45 m³

    Microbiocide Requirement : 0.1 kg/m3 of system volume


    : Once in 2 months.
    : 0.1 x 45
    : 4.5 Kgs.

    Capacity of Manual Dosing Pot Offered : 25 ltrs.

    We have offered a 25 ltrs. Manual Dosing Pot. Proposed Dosing Pot is sufficient to dose one
    full shock dosage of Microbiocide at a time.

    Dosing Pump Calculation

    Dosing pump is used for the dosing of corrosion inhibitor in the chilled water system which
    is connected to the automatic dosing system controller. The dosage is done automatically
    based on the conductivity measurement. Dosage is calculated based on an average system
    loss of 2% per month.

    System Volume : 45 m³
    Water Bird Continuation Sheet

    Dosage rate of Corrosion


    Inhibitor (Accepta 2337) : 3 kgs/m³

    Yearly Maintenance Quantity

    System Volume : 45 m³
    Average loss per month :2%
    : 0.9 m³/month

    Quantity of Accepta 2337 required = 0.9 m³ x 12 (months in a year) x 3 (dosage rate)


    = 32.4 kgs. / year
    = 0.08876 ltrs/day
    = 0.0036 ltrs/hr

    Selected Pump : CNPB01601


    : 1.1 ltrs/hr. @ 16 Bar

     The dosing pump can deliver a dosage rate of 1.1 Ltrs/hr which is much above the
    system requirement of 0.0036 Ltrs/hr.

    System Pressure : Up to 16 bar

     The selected / proposed pump can dose chemical at a pressure of 16 bars, which is
    enough for the system.

    Dosing Tank Calculation:-

    System Volume : 45 m³
    Dosage rate of Corrosion
    Inhibitor (Accepta 2337) : 3 kg’s/m³

    Yearly Maintenance Quantity

    System Volume : 45 m³
    Average loss per month :2%
    : 0.9 m³/month

    Quantity of Accepta 2337 required = 0.9 m³ x 12 (months in a year) x 3 (dosage rate)


    = 32.4 kgs. / year

    Selected Dosing Tank : 60 Ltrs.

     Required yearly maintenance chemical is 32.4 kg’s only. Hence we have provided 60
    ltrs. Dosing tank, which is more sufficient for more than twelve month chemicals
    consumption.

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