IIT Madras

IIT Hyderabad

IIT Bombay

IIT Indore

IIT Gandhinagar

IIT Guwahati

IIT Ropar

Kotak - IIT Madras Save Energy Mission (KISEM)

Indian Institute of Technology Madras

KMB-IIT-GUW-230817-07

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

Mosquito repellant Refills, Anti Roach Gel, Hair dye

Plant Area (Sq.ft)

30,000

No. of Employees

45

Production Hours

7,200

Annual Production

Annual Sales

₹10,00,00,000

Assessment Summary

Total Energy Costs(per year)

₹2,42,85,999

Total Recommended Investment(one time)

₹16,00,000

Total Recommended Savings(per year)

₹30,51,028

Energy Costs Calculation
Electricity

Annual Usage

17,97,624

Unit

kWh

Unit Cost

₹7.9

Annual Cost

₹1,41,33,999

Diesel

Annual Usage

1,12,800

Unit

Ltr

Unit Cost

₹90

Annual Cost

₹1,01,52,000

Total Energy Costs(per year)

₹2,42,85,999

Observations & Recommendations
BR - Boiler & Steam Line
ObservationRecommendationUnit SavingsAnnual SavingsInvestmentROIStatus
Boiler feed water temperature is only 35 °CCollect condensate recovery properly and use it as boiler feed water5,520₹4,96,800₹2,00,0004.8
Condensate recovery is not collected and utilized.Collect condensate recovery properly and use it as boiler feed water
DM - Demand Management
ObservationRecommendationUnit SavingsAnnual SavingsInvestmentROIStatus
Maximum Demand that has been reached in the previous year is 392 kVA while the sanctioned demand is 530 kVASurrender the excess demand of 100 kVA₹3,36,000
CPF - Capacitor & Power Factor
ObservationRecommendationUnit SavingsAnnual SavingsInvestmentROIStatus
Only 94 kVAR connected in 160 kVAR APFC panelReplace the derated capacitor₹15,000
PF correction is based on feedback from single phase onlyInstall three phase sensing to bring PF to unity.
TR - Transformer
ObservationRecommendationUnit SavingsAnnual SavingsInvestmentROIStatus
Overall transformer loss is high - 1.89%Install Harmonics filter to avoid distortion in harmonics and to reduce the transformer loss19,523₹1,63,017₹7,00,00051.5
Transformer current harmonics (8.5%) is higher than the IEEE Standard of 8%Install Harmonics filter to avoid distortion in harmonics and to reduce the transformer loss
CR - Compressor
ObservationRecommendationUnit SavingsAnnual SavingsInvestmentROIStatus
Plant overall Air leakage is high - 103 CFMArrest all the identified air leakages1,42,663₹11,91,236₹50,0000.5
Compressor current pressure setting is very high ( 7.5 bar)Reduce the pressure setting to 6 - 6.5 bar40,068₹3,34,568
CT - Cooling Tower
ObservationRecommendationUnit SavingsAnnual SavingsInvestmentROIStatus
In cooling tower, the water flow is uneven and the CT fan is running even during the non cooling timeProper maintenance should be done regularly. Turn off CT fan when not in use.6,480₹54,108₹1,00,00022.2
ALS - Alternate Source of Power
ObservationRecommendationUnit SavingsAnnual SavingsInvestmentROIStatus
UPS 1 & UPS 2 is operated only at 35% & 25% loadingOperate the UPS at maximum load to get maximum efficiency8,250₹68,888
FN - Fans
ObservationRecommendationUnit SavingsAnnual SavingsInvestmentROIStatus
Power consumption of the 30 old exhaust fans (0.5 kW) are higher than the power consumption of new exhaust fan (0.3 kW)Replace the old exhaust fans with new exhaust fans21,600₹1,80,360₹3,00,00020
FN - Fans
ObservationRecommendationUnit SavingsAnnual SavingsInvestmentROIStatus
Totally, there are 94 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 W27,072₹2,26,051₹2,35,00012.5