Important Terminologies • Refrigeration Effect or Cooling Capacity : It indicates capacity of refrigeration/ AC. Quantity of heat abstracted from the cooling space / airconditioned space per hour is the Refrigeration Effect. It’s expressed in ‘Kcal/Hr’ or ‘BTU /Hr’ or ‘Ton’ unit and also can be expressed in Watts of cooling • Ton (TR): 1 Ton of refrigeration effect means that amount of heat-extraction at which 1 ton (1000 Kg) of 0 DegC water is transformed into 0DegC of ice in 24 hours time. 1Ton (TR) = 3000 KCal /Hr = 12000 BTU/Hr = 3510 Watts • Energy Efficiency Ratio (EER) Refrign. Effect in Watt / Input Power in Watt ( W/W) TABLE 2.1: Star Rating Band valid from 01 Jan 2007EER (W/W) Star Rating Min Max 1 Star * 2.30 2.49 2 Star ** 2.50 2.69 3 Star *** 2.70 2.89 4 Star **** 2.90 3.09 5 Star ***** 3.10 Saving in Voltas Star Rated Ac’s • Star Rating: Govt. of India, Bureau of Energy Efficiency, started certifying the Acs by testing at their specified labs for Energy Efficiency and started giving labels (certificates) from 1 star to 5 star depending on the efficiency to save electricity, that means higher the star marking higher the efficiency ratio and higher the saving. The minimum EER (W/W) for getting 1 star is 2.3 and so on. • How, the Voltas star rated units can save electricity compare to non star rated Acs . Calculation given in next slide is for voltas 1.0 tr gold split unit having 5 star rating and compared to non star rated unit Sample saving calculation for 1 ton Vertis Gold split • • • • • • • Capacity in watts/ power required to get the cooling = EER For Vertis Gold 1 tr, Cooling cap is 3510 watts and power required is 1135 Watt EER = 3510 / 1135 = 3.1 For non star rated AC, the EER will be 2.2 or below., so for achieving the same cooling capacity of 3510 watts, the power required will be $ watts 3510 / $ = 2.2, so $ = 3510 / 2.2 = 1596 watts That means, the non star rated unit of 1.0 tr capacity will consume 1595 watts compared to the 1135 watts consumed by Voltas star rated AC So, the power saving in one hour is 1596 – 1135 = 461 watts or 0.461 kwh or units • • • Assuming 70% compressor running, for 8 hrs the power unit (KWH) saved is 0.461X0.7X8 = 2.58 units Assuming power charges @ Rs. 5/- per unit, in one year, the saving will be 2.58X30X12 X5 = Rs. 4644.00 per year. This is the saving in electricity bills of our 1.0 tr vertis Gold unit with comparison to a non star rated unit of EER less than 2.2. More about Star rating process by BEE: 1. Scope 1.1 This Standard specifies the energy labeling requirements for singlephase split and unitary air conditioners of the vapour compression type for household use up to a rated cooling capacity of 11 kW and that fall within the scope of IS1391 Part 1 and Part 2, being manufactured, imported, or sold in India. 1.2 This Standard shall be read in conjunction with IS1391 Part 1 and Part 2 with all amendments1, as applicable Exclusions: 1. Air conditioners, which are not included within the scope of, IS 1391 Part 1 and Part 2, pending the development of a suitable test method. 2. Multi-split systems (i.e., those having more than one indoor unit with an independent control for each indoor unit) 3. Evaporative coolers or any other cooling systems that are not of the vapour compression type. 2. Schedule of tests 2.1 Method of tests The testing code and procedure for air conditioners shall be as per IS1391 Part 1 and Part 2 with all amendments. Exception to IS 1391 part 1 and 2: All tests, including the Energy Consumption and Capacity tests, shall be conducted in Balanced Ambient Calorimeters for the purpose of check and challenge testing. 2.2 Parameters to be tested 2.2.1 Energy Consumption The Energy Consumption test of the air conditioner shall be conducted as per IS 1391 Part 1 and Part 2 with all amendments. 2.2.2 Cooling Capacity The Capacity Rating test of the air conditioner shall be conducted as per IS 1391 Part 1 and Part 2 with all amendments. 5. Sampling Bureau of Energy Efficiency (BEE) or its designated agency for testing as per the following sampling plan will pick up the samples: a) One sample will be picked up at random from the manufacturing facility or warehouse. b) One sample will be picked from a retail outlet. Three units of each type shall be picked up for each test. The tests shall be conducted on two of the three units, the third shall be kept as an alternative in case one of the units is damaged or can not be tested properly for any other reason.. model Vertis Gold split star rating Tr Cooling in Kcal/Hr Cooling in BTU/ hr Cooling in Watts Rated Current Power input in Watts Rated EER ( Cooling W/ Power W) model 5 0.75 2250 9000 2630 3.6 820 3.21 Vertis Plus split star rating Tr Cooling in Kcal/Hr Cooling in BTU/ hr Cooling in Watts Rated Current Power input in Watts Rated EER ( Cooling W/ Power W) model Vertis Gold split 5 1 3000 12000 3510 5 1135 3.09 Vertis Plus split 3 0.75 2250 9000 2630 4.1 940 2.80 Vertis Gold split 4 1.5 4500 18000 5270 7.6 1720 3.06 Vertis Plus split 3 1 3000 12000 3510 5.5 1250 2.81 4 2 5550 22000 6450 9.2 2110 3.06 Vertis Plus split 3 1.5 4500 18000 5270 8.4 1880 2.80 3 2 6000 24000 7030 11.1 2510 2.80 VERTIS ELITE VERTIS ELITE VERTIS ELITE VERTIS ELITE split star rating Tr Cooling in Kcal/Hr Cooling in BTU/ hr Cooling in Watts Rated Current Power input in Watts Rated EER ( Cooling W/ Power W) Vertis Gold split split 3 0.75 2250 9000 2630 4.1 940 2.80 split 3 1 3000 12000 3510 5.5 1250 2.81 split 3 1.5 4500 18000 5270 8.5 1910 2.76 3 2 6000 24000 7030 11.1 2510 2.80
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