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Energy Saving Tips fpr Air Conditoners

1. Use ceiling or table fan as first line of defence against summer heat, as running cost of using an AC could be 25 times or more than that of a ceiling fan. 

2. Keep windows and doors of air-conditioned rooms closed as often as possible.

3. Avoid outside air intake: Since outdoor air is warmer and contains more heat and moisture than the conditioned air and thus it increases electricity consumption. Keep in mind that natural leakage through windows and doors will generally supply sufficient outdoor air for assuring comfort conditions and minimizing odor.

4. Remove obstructions (e.g., furniture, piled books, etc.) to air passage to the unit. AC operates most efficiently when intake and discharge airflows are free from nearby obstacles.

5. 

   Set AC thermostat settings properly: AC uses 3 to 5 percent less energy for each degree set above 22°C, therefore set AC’s thermostat at a temperature as high as is comfortably possible (25 - 26°C) in the summer. Smaller the difference between the indoor and outdoor temperatures, lower will be the electricity consumption.

6. Consider using an interior ceiling fan in conjunction with your AC to spread the cooled air more effectively within the room. Using fan allows you to set the thermostat temperature higher and thus reduces the energy consumption.

7. Do not set your thermostat at a colder setting than normally needed when you turn on your air conditioner; it does not cool your room any faster and could result in excessive cooling and unnecessary expense.

8. Do not place lamps, televisions or other electric appliances near AC. As these appliances generate heat, and the thermostat senses heat from these appliances causing the air conditioner to run longer than necessary.

9. Plant trees and shrubs to keep the day’s hottest sun off your house, wherever possible. This will reduce energy consumption in AC.

10. Clean the air-conditioner filter regularly: A dirty air filter reduces airflow and may damage the unit. Clean filters enable the unit to cool down quickly and use lesser energy. A filter that slides out easily facilitates easier cleaning. Follow the manual’s instructions for removal and cleaning of filter.

11. Clean outdoor coils when they become dusty. Efficiency of AC degrades in dusty conditions, and especially when layers of dirt and mud are evident.

12. Make sure upon installation and routine maintenance that the unit is well-sealed from the outdoors.

13. Give the annual maintenance contract of AC directly to the manufacturer or its authorized

IS:12615-2011

The New IS:12615-2011 is based on the International Standard IEC 60034-30 (2008) which defines New Efficiency Classification for single speed, three phase, induction motors.
The IS:12615-2011 covers single speed, three-phase, 50Hz, cage induction motors that:
• have rated voltage ≤1000V;
• have a rated output 0.37kW ≤ PN ≤ 375kW;
• have either 2, 4 or 6 poles;
• meet frame size to output relation as stipulated in IS:1231 (for outputs covered by IS:1231);
• are rated on the basis of either duty type S1 (continuous duty) or S3 (intermittent periodic duty) with rated cyclic duration factor of 80% or higher;
• are capable of operating direct on-line;
• are designed for operation on virtually sinusoidal and balanced voltage conditions as defined in 7.2.1 of IS/IEC 60034-1;
• designed for an ambient temperature not exceeding 40°C and altitude not exceeding 1000m;
• have degree of protection IP44 or superior;
• have method of cooling IC411 in accordance with IS 6362 / IEC 60034-6;
• have service factor not exceeding 1.0.

The Efficiency classes defined are:
IE1 - Standard Efficiency
IE2 - High Efficiency
IE3 - Premium Efficiency

The values of efficiency for motors to classify as IE2 or IE3 in accordance with the new IS:12615-2011 are as under:

kW	2 Pole			4 Pole			6 Pole
	Frame Size	Efficiency %		Frame Size	Efficiency %		Frame Size	Efficiency %
		IE2	IE3		IE2	IE3		IE2	IE3
0.37	71	72.2	75.5	71	70.1	73	80	69	71.9
0.55	71	74.8	78.1	80	75.1	78	80	72.9	75.9
0.75	80	77.4	80.7	80	79.6	82.5	90S	75.9	78.9
1.1	80	79.6	82.7	90S	81.4	84.1	90L	78.1	81
1.5	90S	81.3	84.2	90L	82.8	85.3	100L	79.8	82.5
2.2	90L	83.2	85.9	100L	84.3	86.7	112M	81.8	84.3
3.7	100L	85.5	87.8	112M	86.3	88.4	132S	84.3	86.5
5.5	132S	87	89.2	132S	87.7	89.6	132M	86	88
7.5	132S	88.1	90.1	132M	88.7	90.4	160M	87.2	89.1
11	160M	89.4	91.2	160M	89.8	91.4	160L	88.7	90.3
15	160M	90.3	91.9	160L	90.6	92.1	180L	89.7	91.2
18.5	160L	90.9	92.4	180M	91.2	92.6	200L	90.4	91.7
22	180M	91.3	92.7	180L	91.6	93	200L	90.9	92.2
30	200L	92	93.3	200L	92.3	93.6	225M	91.7	92.9
37	200L	92.5	93.7	225S	92.7	93.9	250M	92.2	93.3
45	225M	92.9	94	225M	93.1	94.2	280S	92.7	93.7
55	250M	93.2	94.3	250M	93.5	94.6	280M	93.1	94.1
75	280S	93.8	94.7	280S	94	95	315S	93.7	94.6
90	280M	94.1	95	280M	94.2	95.2	315M	94	94.9
110	315S	94.3	95.2	315S	94.5	95.4	315M#	94.3	95.1
125	315M	94.5	95.3	315M	94.6	95.5	315M#	94.4	95.2
132	315M#	94.6	95.4	315M#	94.7	95.6	315L#	94.6	95.4
160	315L#	94.8	95.6	315L#	94.9	95.8	355L	94.8	95.6
200	315L	95	95.8	315L	95.1	96	355L	95	95.8
250	355L	95	95.8	355L	95.1	96	355L	95	95.8
315	355L	95	95.8	355L	95.1	96		95	95.8
375		95	95.8		95.1	96		95	95.8

Green Deal : An Innovative Finance Mechanism for Energy Efficiency Improvement

The Green Deal is an innovative financing mechanism that lets people pay for energy-efficiency improvements through savings on their energy bills. 

How the Green Deal works  

The Green Deal process has four stages:

Assessment 

This is carried out in your home or business premises by a Green Deal Advisor or Assessor. They will:

• use standardised software to identify what energy efficiency or microgeneration improvements you can make and what the financial savings would be
• outline how the payments will work
• identify which improvements are likely to be cost effective
• produce a Green Deal advice report outlining your options
• declare any links they have with Green Deal Providers. 

Finance

Once the Green Deal Advisor has given you your report, you can take it to one or more Green Deal Providers who can arrange and fund the improvements. If you decide to take up a Green Deal offer you will then sign a Green Deal Plan, which is a contract between you and the Green Deal Provider.

Installation

The Green Deal Provider will arrange for a Green Deal installer to come and carry out the work you have agreed to. The installer will have been vetted to ensure they meet the standards set out for the Green Deal. 

Repayment 

You pay back the cost of the improvements over time through your electricity bill. Your electricity supplier will pass your payments on to your Green Deal Provider. The amount you pay back will be no more than a typical household will save on heating bills, so you are likely to be better off overall from day one.

Although the cost of the improvements is repaid, this is not a conventional personal loan as the charge is attached to the electricity meter in your house and paid back through your electricity bill. If you move out, the new occupant will pick up the charge while also benefiting from a more energy-efficient property.

Interest will be charged on these payments, but the rate will be fixed and you will be shown a full schedule of all the payments before you sign up to the plan. It is up to the Green Deal Providers to decide on the interest rate, so it will be worth shopping around to find the best deal. You will be able to pay off the plan early if you choose, though the Provider may charge a fee for this.

Details of the Green Deal

What improvements will the Green Deal cover?

There are 45 measures or areas of home improvement approved to receive funding under the Green Deal, covering:

• insulation
• heating and hot water
• glazing
• microgeneration (generating your own energy).

For the non-domestic sector lighting, mechanical ventilation and heat recovery measures can also be covered. More areas may be added as technology develops.  

Incentives to kick-start the Green Deal

 The Government have recently launched the Green Deal Cashback Scheme, an incentive to encourage people to make improvements during the early days of the Green Deal. Eligible customers will receive cashback payments once they have measures installed, with the highest rates going to the earliest applicants.

£600 Million Approved For UK’s ‘Green Deal’ Energy Efficiency Program

The Green Deal is an innovative financing mechanism that lets people pay for energy-efficiency improvements through savings on their energy bills. £600 million of public support for the UK’s ‘Green Deal’ energy efficiency program was recently approved by the European Union.

The Green Deal is a program designed to make investing in energy efficiency improvements, such as

• insulation - eg loft or cavity wall insulation
• heating hot water efficiency, modern boilers, etc,
• draught-proofing
• double glazing
• renewable energy technologies - eg solar panels or wind turbines

The loans are then repaid through energy bills, and transfer with the property, rather than the person who took out the loan.

“The UK Green Deal allows consumers and businesses to improve the energy efficiency of their buildings without making huge upfront investments,” EU Competition Commissioner Joaquin Almunia said in a statement.

What you need to do

1. Get an assessment of your property to see what improvements you can make and how much you could save on your energy bills.
   
2. Choose a Green Deal provider to carry out the work. You discuss with them what work you want done and whether the Green Deal is right for you.
   
3. If you go ahead with the improvements you must sign your Green Deal Plan - this is a contract between you and the provider stating what work will be done and how much it will cost. The provider will then arrange for a Green Deal installer to do the work.
   
4. Once the work is done, you’ll pay off the money in installments through your electricity bill.
   

The EU Commission works as a regulator for the members of the European Union, deciding matters to do with state aid and competition. According to the commission, the program is a well designed effort to improve efficiency in the UK.

For Details of Green Deal See post Green Deal : An Innovative Financing Mechanism for Energy Efficiency Improvements

How to calculate tonnage requirement for an Air conditioner

how to calculate tonnage requirement for an Air conditioner. All you need to know how much big your room is?

So, just find out your room floor area like (10 ft x 10ft = 100 ft²)

Divide it by 600. So, this gives you basic AC capacity. And you have to add 0.5 ton for every 5 people.

So, its like 100 divided by 600 = 0.167. Add 0.5 ton for 4-5 people living in that room which results as (0.167 + 0.5) =  0.667.

So, for 10ft x 10 ft room, usually a 0.8 ton air conditioner is enough.

Same way you can calculate tonnage require of air conditioner for any room size.

Also to mention, always go for a rotary compressor, your electricity bill would be 15-20% lower and noise would be low and cooling efficiency would be much better.

Window AC Price List and Power Consumption Comparison for 0.75 Ton

Company	Price (Rs.)	Model No.	Tonnage	Star Rating	EER	Cooling Capacity	Power Consumption
					(w/w)	(Watts)	(Units/hour)
O’General	18,500	AKGA09AATB	0.75	N.A.	2.63	2498	0.95
LG	18,000	LWA2CR1A	0.75	1	2.49	2489	1
Voltas	15,290	GOLD 2S (4011021)	0.75	2	2.55	2509	0.984
Whirlpool	17,000	WAR09G20DW0	0.8	2		2580	0.95
Carrier		GWRAC009ER001 / GWRAC009EM001	0.75	3		2928	0.96
Godrej	16,990	GWC 10GG 2 WJM	0.75	2	2.52	2505	0.994
Bluestar	16,700	2WAE081YB	0.75	2	2.57	2544	0.99
Haier	13,899	HW-09C2	0.75	2	2.66	2500	0.94