IIT Madras

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Kotak - IIT Madras Save Energy Mission (KISEM)

Indian Institute of Technology Madras

EAR/23-24/KISEM/IITI-05/02

The subject plant is located in Satna district of Madhya Pradesh and falls under NIC Category-17. This assessment was carried out by the IEAC Center, IIT Indore, during the course of the year 2023.

General Info

Principal Product

Paper Products Manufacturer

Plant Area (Sq.ft)

8,50,000

No. of Employees

110

Production Hours

7,200

Annual Production

1,67,00,000

Annual Sales

₹1,00,00,00,000

Assessment Summary

Total Energy Costs(per year)

₹8,75,00,000

Total Recommended Investment(one time)

₹18,32,800

Total Recommended Savings(per year)

₹1,65,02,528

Energy Costs Calculation
Electricity

Annual Usage

27,04,000

Unit

kWh

Unit Cost

₹9.02

Annual Cost

₹2,44,00,000

Electricity (solar)

Annual Usage

296000

Unit

kWh

Unit Cost

₹9.02

Annual Cost

Coal

Annual Usage

3655080

Unit

Kg

Unit Cost

₹9.6

Annual Cost

₹35100000

Rice Husk

Annual Usage

5279020

Unit

Kg

Unit Cost

₹5.3

Annual Cost

₹28000000

Total Energy Costs(per year)

₹8,75,00,000

Observations & Recommendations
CR - Compressor
ObservationRecommendationUnit SavingsAnnual SavingsInvestmentROIStatus
Overall air leakages are found to be high at different points of the circuitArrest air leakages regularly by conducting maintenance of compressed air system consisting of the plant, circuit and fittings.74,214₹6,02,618₹54,0002
Screw compressor (C1) - loading time is very high due to inefficient performance and high specific power consumption. Due to leakage and poor performance of C1, Reciprocating Compressor (C2) is also switched ON during peak demandsReplace inefficient C1 with new screw compressor of same capacity with VFD and keep C2 as standby only.39536₹321823₹70000027
MT - Motors
ObservationRecommendationUnit SavingsAnnual SavingsInvestmentROIStatus
Mechanical power transmission slip found to be very high in Chest Agitator motors - 1,2 and 3, Turbo 600, Vacuum Pumps - 1 and 2Reduce slippage in belt and pulley system through replacement of conventional V-belts with Cogged V-belts and reduce motor speed using existing VFD528688₹4303517₹240001
Mechanical power transmission slip found to be very high in Chest Agitator motors - 5 and 6Reduce energy lost in transmission by direct coupling the machines6336₹51575₹8000019
VFD is unnecesarily used to run Chest Pumps - 2,4,5 and 6 at full speed. Energy is lost as self power consumption in VFDsBypass VFD and save energy lost in VFDs42120₹342857₹80001
BR - Boiler & Steam Line
ObservationRecommendationUnit SavingsAnnual SavingsInvestmentROIStatus
Thermal energy lost as flash steam at the rate of 7.4%Recover condensate using a SOPT Pump and pumping condensate directly to feed water tank428400₹2274804₹7000004
Steam leakages at various points (13 Nos x 15kg/hr)Insulate steam lines and arrest the leakages by properly sealing the gaps334200₹1774602₹300001
Thermal energy lost in condensate circulating in steam traps (13Nos x 10kg/hr)Recover Condensate27000₹143370₹500005
Thermal energy loss in Turbine and SOPT - PRVMaintenance of Steam turbine shaft seals1217400₹6464394₹500001
LT - Lighting
ObservationRecommendationUnit SavingsAnnual SavingsInvestmentROIStatus
Lighting used in the plant and office areas are low efficiency T8 and T12 fluorescent tube lightsRetrofitting 20 Nos of Conventional Tubelights - 36 W T8 FTL with 20W LED patterns2304₹18755₹120008
FN - Fans
ObservationRecommendationUnit SavingsAnnual SavingsInvestmentROIStatus
Ceiling fans used in the plant and office areas are inefficient conventional typeReplace 24 Nos of Conventional ceiling fans with BEE 5 Star Label BLDC ceiling fans7776₹68097₹7680014
DM - Demand Management
ObservationRecommendationUnit SavingsAnnual SavingsInvestmentROIStatus
Billed MD is low compared to minimum quota of CD allottedSurrender CD from 900 to 800 kVA and save minimum demand charges₹136116₹500005