IIT Madras

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IIT Bombay

IIT Indore

IIT Gandhinagar

IIT Guwahati

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Kotak - IIT Madras Save Energy Mission (KISEM)

Indian Institute of Technology Madras

KMB-IIT-GUW-230814-06

The subject plant is located in Guwahati district of Assam and falls under NIC Category-20. This assessment was carried out by the IEAC Center, IIT Guwahati, during the course of the year 2023.

General Info

Principal Product

Hair Dye, Liquid Detergent

Plant Area (Sq.ft)

30,000

No. of Employees

50

Production Hours

7,200

Annual Production

Annual Sales

₹10,00,00,000

Assessment Summary

Total Energy Costs(per year)

₹1,23,74,333

Total Recommended Investment(one time)

₹12,35,000

Total Recommended Savings(per year)

₹47,55,555

Energy Costs Calculation
Electricity

Annual Usage

14,17,680

Unit

kWh

Unit Cost

₹8.7

Annual Cost

₹1,23,74,333

Total Energy Costs(per year)

₹1,23,74,333

Observations & Recommendations
DM - Demand Management
ObservationRecommendationUnit SavingsAnnual SavingsInvestmentROIStatus
Maximum Demand that has been reached in the previous year is 264 kVA while the sanctioned demand is 619 kVASurrender the excess demand of 300 kVA₹12,96,000
CPF - Capacitor & Power Factor
ObservationRecommendationUnit SavingsAnnual SavingsInvestmentROIStatus
Only 87 kVAR connected in 140 kVAR APFC panelReplace the derated capacitor₹15000
PF correction is based on feedback from single phase onlyInstall three phase sensing to bring PF to unity.
TR - Transformer
ObservationRecommendationUnit SavingsAnnual SavingsInvestmentROIStatus
Transformer current harmonics is slightly higher than the IEEE StandardInstall Harmonics filter to avoid distortion in harmonics₹7,00,000
CR - Compressor
ObservationRecommendationUnit SavingsAnnual SavingsInvestmentROIStatus
Plant overall Air leakage is high (140 cfm)Arrest all the identified air leakages1,93,363₹17,40,267₹50,0000.3
Compressor 2 & 4 pressure setting is very high ( 7.5 bar)Reduce the pressure setting of compressor 2 & 4 to 6 - 6.5 bar23,884₹2,14,956
Unloading time of Non VFD compressor is high (5 hrs per day) and the current set pressure of the Non VFD compressor is low compared to the other VFD compressorSet the pressure setting of Non VFD compressor at maximum value that need to be achieved10,395₹93,555₹50,0006.4
The unloading time of Nitrogen compressor is high – 9 hours per dayInstall VFD to minimize the unloading losses18,144₹1,63,296₹50,0003.7
AHU - Air Handling Unit
ObservationRecommendationUnit SavingsAnnual SavingsInvestmentROIStatus
In the AHU for Creme section, there is no significant temperature difference at the suction side (37°C) and delivery side (36.5°C) because Air dryer is present near suction side of AHUReplace the AHU with 20 BLDC fans. Relocate the air dryer away from the suction side of AHU.45,936₹4,13,424₹50,0001.5
CT - Cooling Tower
ObservationRecommendationUnit SavingsAnnual SavingsInvestmentROIStatus
The effectiveness of the cooling tower is 40%Proper maintenance should be done regularly6,336₹57,024₹1,00,00021
In cooling tower, the fills are chocked and the water distribution is uneven.Proper maintenance should be done regularly
CHR - Chiller
ObservationRecommendationUnit SavingsAnnual SavingsInvestmentROIStatus
In both the chiller, the actual kW/TR (2.52) is higher than the designed kW/TRProper maintenance should be done at regular basis at chiller section69,128₹6,22,152₹1,00,0001.9
In chiller, the evaporator tube and condenser fills has been chockedProper maintenance should be done at regular basis at chiller section
LT - Lighting
ObservationRecommendationUnit SavingsAnnual SavingsInvestmentROIStatus
Nearly, 57 LED lights were turned on during the day time where there is enough source of natural lightTurn OFF the LED lights during day time3,385₹30,465
FN - Fans
ObservationRecommendationUnit SavingsAnnual SavingsInvestmentROIStatus
Totally, there are 48 conventional ceiling fan in the plant running for 24 hours and power consumption by each fan is 70 WReplace the conventional ceiling fan with BLDC fans which consumes only 30 W13,824₹1,24,416₹1,20,00011.6