Star rating of home appliances

standards and labelling of electrical home appliances

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

2. Terminology White goods > Home appliances( refrigerator,a /c etc ) Brown goods > P ortable 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 k Wh/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 R ating 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 EER Unit consumed Cost Cost per day per month Saved/ Yr No Star 2364 2.20 9.45 Units 709 Rs Rs 1 Star 2261 2.30 9.04 Units 678 Rs 308 Rs 2 Star 2080 2.50 8.32 Units 624 Rs 851 Rs 3 Star 1926 2.70 7.70 Units 578 Rs 1313 Rs 4 Star 1793 2.90 7.17 Units 538 Rs 1712 Rs 5 Star 1677 3.10 6.71 Units 503 Rs 2059 Rs

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 ? Energy consumption per year Savings For no star = 1100 kWh=1100 units Rs / Yr 1 star = 977 kWh= 977 units 308 Rs/ Yr 2 star = 782 kWh= 782 units 795 Rs/ Yr 3 star = 626 kWh= 626 units 1185 Rs/ Yr 5 star = 400 kWh=400 units 1750 Rs/ Yr

15. Thank you