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AHU condensate usage and appllication
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Transcript of AHU condensate usage and appllication
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E Venkata Raju - Building Manager 1
Condensation
water that collects on a cool surface because the temperature of the surface is below the point at which moisture in the air forms as water droplets.
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E Venkata Raju - Building Manager 2
Formation of condensation
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E Venkata Raju - Building Manager 3
Condensate on glass of water
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E Venkata Raju - Building Manager 4
Condensate water from AHU
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E Venkata Raju - Building Manager 5
Quantity of condensate depends on
1. Temp of chilled water @ inlet to AHU2. Percentage of RH in fresh air3. Percentage of RH in return air4. Capacity of AHUs5. Volume of chilled flow6. Volume of air flow
In Hyderabad , More RH during monsoons (70 to 85%), in summer 50 to 70% and in winter 25 to 50%.
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E Venkata Raju - Building Manager 6
Approximate Condensate quantity @B7
• Based on our intermittent collection sample reports at individual AHUs , floor AHUs , south wing AHUs and north wing AHUs in the last 3 to 4 months , it is approximately 10 to 12 KL per day ( when 37 AHUs running).
• Assumed 15 to 18KL per day (When 62 AHUs running)
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E Venkata Raju - Building Manager 7
Quality of condensate water @B7
1.Hardness 0 to 2 ppm2. TTDs 30 to 40 ppm3. PH 6 to 74. Clear water
5. Temp 15 to 20 deg.C
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E Venkata Raju - Building Manager 8
Usage of collected condensate water
1.As drinking water
2.As domestic water
3.As CT water
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E Venkata Raju - Building Manager 9
For Drinking- Scheme
• Approximate cost : RS 2.50 lacs• Savings/Earnings : 6000 (Ltrs) x 20 (days) x Rs.1.00 (per ltr)x
12(months) = 14.40 lacs /year• Note :Every high purity of raw water , output is 80 to90% .
Condensate water
Nano filtration/ RO
UV dis infection Chlorination
Lab testing as per drinking water standards Drinking tank
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E Venkata Raju - Building Manager 10
For domestic purpose- Scheme
• Approximate cost : Rs 20000/-• Savings/earnings: 12,000 (ltrs)x Rs0.30 x 26
days x 12 months= 11,23,200/- year
Condensate water
Multi grade filter
Manual/auto Chlorination
Domestic tank
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E Venkata Raju - Building Manager 11
For CT water- Scheme
• Approximate cost : Rs 15000/-• Savings : No chemicals required , no scale formation , no
bleed off , less power consumption in chillers : Approximately Rs 75 to 80 lacs per year.
Condensate water Sand filter Collection
tank
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E Venkata Raju - Building Manager 12
B7Existing AHUs drain scheme
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E Venkata Raju - Building Manager 13
B7 Proposed plan to collect condensate water from all AHUs
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E Venkata Raju - Building Manager 14
Cost estimation
• 1. As per quote by Hiline : Rs 1.5 lacs• 2. As per our estimate and as per standard
design : Rs 75,000/-• 3. As per present available material : Rs
25000/- (May not be as per standard , but it is good and suitable for our requirement)
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E Venkata Raju - Building Manager 15
Thanks