Energy Audit of hostel

ENERGY MANAGEMENT ASSIGNMENT

Submitted by:

Students of Mechanical Engineering Part III

Energy Audit: Dhanrajgiri Hostel

TABLE 1: PRELIMINARY QUESTIONNAIRE

Name of Hostel: Dhanrajgiri Hostel Address: Dhanrajgiri Hostel, IIT (BHU), Varanasi-221005 Contact Person: Warden and students Number of Workers: 18 Guards: 2 Number of Students: 380 Number of rooms: 190 Number of days of student residence: 254 Number of mess: 2 Number of Canteen: 1 Appliances used in Hostel 

CFLs :25-30 W



Ceiling Fans: 100 W



Tube lights: 60 W



Laptops: 50-70 W



Mobile:5-7 W

Total number of fans in use: 210 Total number of tube lights: 22 Total number of CFLs: 168 Total number of water cooler: 6 Total number of tube lights in canteen: 2 Total number of street lights (Sodium lamp): 2

TABLE 2: ANNUAL ENERGY BILL FOR YEAR 2013 MONTH

January February March April May June July August September October November December

DAYS OF RESIDENCE 31 28 21 30 12 0 10 31 30 21 21 13

ELECTRICITY CONSUMPTION(kWh ) 6013.24 5749.84 7261.46 15319.68 7645.94 1632.46 7136.58 15944.52 14872.44 11532.66 5211.20 4127.34

LPG CONSUMPTION (kg) 2114 2056 1902 2128 784 0 756 2128 2076 1436 1386 1002

TABLE 3: ENERGY CONSUMPTION IN COMMON UNIT (kWh) MONTH

January February March April May June July August September October November December

ELECTRICITY CONSUMPTION(kWh ) 6013.24 5749.84 7261.46 15319.68 7645.94 1632.46 7136.58 15944.52 14872.44 11532.66 5211.20 4127.34

*LPG Conversion Rate: 25 kWh/kg

LPG CONSUMPTION(kWh) 52850 51400 47550 53200 19600 0 18900 53200 51900 35900 34650 25050

TOTAL ENERGY CONSUMPTION(kWh) 58863.24 57149.84 54811.46 68519.68 27245.94 1632.46 26036.58 69144.52 66772.44 47432.66 39861.20 29177.34

Table 4: ENERGY CONSTANT

MONTH

January February March April May June July August September October November December

ELECTRICITY CONSUMPTION(Rs ) 28562.89 27311.74 34491.94 72768.48 36318.22 7754.18 33898.76 75736.47 70644.09 54780.14 24753.2 19604.86

Energy charges: LPG: Rs 94.74/kg Electricity: Rs 4.75/kWh

LPG CONSUMPTION (Rs) 200280.36 194785.44 180195.48 201606.72 74276.16 0 71623.44 201606.72 196680.24 136046.64 131309.64 94929.48

TOTAL ENERGY CONSUMPTION(Rs) 228843.25 222097.18 214687.42 274375.20 110594.38 7754.18 105522.20 277343.19 267324.33 190826.78 156062.84 114534.34

Table 5: ELECTRICITY CONSUMPTION FOR LIGHTENING IN HOSTEL Lighting accessories

Power Average (Watt)

Quantity

Approx. hours of service per day

Total working days

Total hours of service

Total energy (MWh)

CFL bulbs

25

168

14

254

3556

14.94

Tube light (Room)

60

22

14

254

3556

4.70

60

32+30+6

15

254

3810

15.54

270

2

11

254

2794

.006

Tube light Lobby+Mess +Toilets Street Sodium lamp

TABLE 6: APPLIANCE DETAILS type

Power(w)

Total number

Approx hr. Of service

Total days

Total hours Of service

Total energy (in MWh)

mobile

5

380

1

254

254

0.482

Laptop

90

380

5

231

1155

39.501

Fan (room)

100

190

18

134

2412

45.828

Fan (mess + Common room)

100

24

12

134

1608

3.859

television

200

1

2

254

508

0.102

Water cooler

700

6

15

106

1590

6.678

CONCLUSION

DHANRAJGIRI HOSTEL in 2013:

Total Electrical Energy consumption for year 2013: 102447 .36 kWh Total expenditure on electricity for year 2013: Rs 486624.96 Total LPG fuel consumption for year 2013: 17768 kg Total expenditure on LPG fuel for year 2013: Rs 88596.86 Net energy consumption for year 2013: 2169965.26 kWh Net energy expenditure for year 2013: Rs 575221.82 Total no. of residents: 380 Total days of residence: 254 Average per head electricity consumption per day: 1.061 kWh Average per head LPG fuel energy consumption per day: 0.184 kg