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-230529-01

The subject plant is located in Pacharia Dalar Pathar district of Assam and falls under NIC Category-21. This assessment was carried out by the IEAC Center, IIT Guwahati, during the course of the year 2023.

General Info

Principal Product

Cosmetics, Health care & Ayurvedic products

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)

₹8,55,66,729

Total Recommended Investment(one time)

₹69,00,000

Total Recommended Savings(per year)

₹1,04,87,219

Energy Costs Calculation
Electricity (Grid)

Annual Usage

77,09,258

Unit

kWh

Unit Cost

₹7.4

Annual Cost

₹5,71,30,778

Briquette

Annual Usage

11,77,439

Unit

Kg

Unit Cost

₹9

Annual Cost

₹1,05,96,951

Diesel

Annual Usage

2,07,196

Unit

Litres

Unit Cost

₹86.1

Annual Cost

₹1,78,39,000

Solar

Annual Usage

9,07,593

Unit

Kwh

Unit Cost

Annual Cost

Total Energy Costs(per year)

₹8,55,66,729

Observations & Recommendations
CHR - Chiller
ObservationRecommendationUnit SavingsAnnual SavingsInvestmentROIStatus
Chillers actual kW/TR is higher than the designed kW/TRProper maintenance like tube cleaning is required so that it will reduce the evaporator & condenser approaches which will improve the kW/TR3,90,000₹30,81,000₹25,00,00010
Actual flow of condenser and evaporator is higher than the designed flowCondenser pumps should be provided with VFD so that the flow will be optimized
CT - Cooling Tower
ObservationRecommendationUnit SavingsAnnual SavingsInvestmentROIStatus
Water flow is not evenly distributed and fills are chocked.Clean all fills frequently.1,40,832₹11,12,573₹10,00,00010.8
Water TDS is around 800 ppm.Maintain water TDS less than 400 ppm.
AHU - Air Handling Unit
ObservationRecommendationUnit SavingsAnnual SavingsInvestmentROIStatus
AHU fan runs all time even when the temperature reaches set pointAHU fan can be controlled in such a way that once the set temperature reached it should be at low speed by using VFD3,25,000₹25,67,500₹25,00,00011.7
AHU uses old conventional fans.Change normal AHU fans with Electronically Commutated fans (EC fan)
CT - Cooling Tower
ObservationRecommendationUnit SavingsAnnual SavingsInvestmentROIStatus
In process CT 1 for Ayurvedic section, Actual flow is higher than designed flowOperate the pump with VFD at 45 HZ28,800₹2,27,520₹00
In process CT 2 for HCD section, Parallel pumps running with different headsSwitch-off the low head pump17,200₹1,35,880₹00
BR - Boiler & Steam Line
ObservationRecommendationUnit SavingsAnnual SavingsInvestmentROIStatus
Oxygen percentage in exhaust air is very high ~ 18% where limit is 6 – 8 %Replace the oxygen sensor & control FD & ID fan according to the same.41200₹3,70,490₹2,00,0006.5
Feed water TDS is very high due to which blowdown loss increases (4%)Maintain the feed water TDS (<100 ppm) so that blowdown loss will be less20300₹1,82,700
Most of the steam traps are not in workingSteam trap should be maintained
CR - Compressor
ObservationRecommendationUnit SavingsAnnual SavingsInvestmentROIStatus
Pressure setting maintained is 7.4 - 8 barChange the pressure setting to 6 – 6.5 bar.60,000₹4,74,000
High Compressed Air Leakage (Average 180 cfm per hour).Arrest the leakages1,94,400₹15,35,760₹5,00,0003.9
High unloading hours (Average 6 hours/day)Use VFD Compressor for variable loads & Non-VFD compressor for base loads48,240₹3,81,096
ALS - Alternate Source of Power
ObservationRecommendationUnit SavingsAnnual SavingsInvestmentROIStatus
All UPS are at 20-25 % loading for 6 monthsInstall control system for loading the UPS at 50 - 60 %.53,000₹4,18,700₹2,00,0005.7