standards and labelling of electrical home appliances

1. Albi Thomas Varkey
B.Tech EEE
M G University
Star rating of
home
appliances

2. Terminology
White goods > Home appliances(refrigerator,a/c etc)
Brown goods > Portable appliances (television and
wireless sets, microwave ovens,
coffee makers)
BEE
>
Bureau of Energy Efficiency
EER
>
Energy Efficiency Ratio
BTU
>
British Thermal Unit

3. Energy Efficiency
• “energy service per unit of energy
consumption”

4. WHAT IS STAR LABELING?
• An “energy efficiency rating scheme for
Electrical appliances”

5. Facts about Star Rating
• Upgrades the standards every two years
• Energy efficiency rating norms would be
revised after every two years
• Energy efficiency rating norms would be
revised from 2014 turning a five-star
refrigerator into a three-star one from January.

6. How stars are given to appliances?
• It is the average amount of electricity used by
the equipment in a year ie kWh/year under
standard test conditions.

7. List of BEE Star Labelled Products
1
Frost Free Refrigerator
2
Fluorescent Tube Lamps
Upto 40W
3 Air Conditioners
4 Direct Cool Refrigerators
5 Distribution Transformers
6 General Purpose Industrial
7 Monoset Pumps
Upto 20 HP
7a Open Well Pumpsets
Upto 20 HP
7b Submersible Pumpsets
Upto 20 HP
8 Ceiling Fans
9 Domestic Gas Stoves
10 Stationary Storage Type
11 Colour Television
12 Washing Machine

8. Examples

9. Transformer Star Rating
• A transformer rated 16 KVA, losses at 50%
loading is 200 Watts, then it has got 1
and
same if 100% loading makes 555 Watts
loss.
• A transformer rated 16 KVA, losses at 50%
loading is 120 Watts, then it has got 5
and
same if 100% loading makes 400 Watts
loss.

10. Table for Transformer Rating

11. Air conditioner (A/C)
• Before discussing in detail I will explain what
is EER, otherwise it will be difficult to identify
which equipment is efficient .
• EER > Energy Efficiency Ratio (EER) is the
ratio of the cooling capacity of an air
conditioner in British Thermal Units
(BTU) per hour, to the total electrical
input (in watts) under certain specified
tests.

12. How an A/C is Star Rated ?
• As per current standards, an air-conditioner is
measured for its energy efficiency(EER) by
calculating the power it consumes to cool a
room to 22° Celsius when it's 35 ° Celsius
outside.

13. Cash Saved(A/c)
Q.
Energy and Saving for 1.5 Ton Windows or split A/c at
different Star Rating if the maximum cooling capacity is
5200 Watts and a unit price is 2.5 Rs?
A. Star rating Input power
Watts
No-Star 2364 Watts
1 Star
2261 Watts
2 Star
2080 Watts
3 Star
1926 Watts
4 Star
1793 Watts
5 Star
1677 Watts
EER Unit consumed Cost
Cost
per day
per month Saved/Yr
2.20 9.45 Units
709 Rs
0
Rs
2.30 9.04 Units
678 Rs
308 Rs
2.50 8.32 Units
624 Rs
851 Rs
2.70 7.70 Units
578 Rs
1313Rs
2.90 7.17 Units
538 Rs
1712Rs
3.10 6.71 Units
503 Rs
2059Rs

14. Refrigerator
Q.
How much will be the money saved for a
250 liters frost free refrigerator with no
star rating,1,2,3 and 5 star if unit cost=2.5 Rs?
A. Energy consumption per year
For no star = 1100 kWh=1100 units
1 star = 977 kWh= 977 units
2 star = 782 kWh= 782 units
3 star = 626 kWh= 626 units
5 star = 400 kWh=400 units
Savings
0 Rs/Yr
308Rs/Yr
795Rs/Yr
1185Rs/Yr
1750Rs/Yr

15. Thank you