Air Conditioners Content

What is Inverter Technology AC and How it is Different from BEE 5 star Non Inverter AC? : Bijli Bachao

Inverter AC

Air Conditioners are a ache level for most individuals in our nation who’re involved about their electrical energy payments. The second an air conditioner is added to the record of home equipment utilized in a family, the electrical energy payments improve considerably. Though it is troublesome to considerably scale back the “big” impression of an air conditioner in your electrical energy payments, however nonetheless a few of it may be managed by selecting the best know-how, doing the best set up/upkeep/operation and by doing the suitable insulation of the room the place the air conditioner is used (extra particulars in our articles listed on the finish of this text).

When it involves know-how, there weren’t many out there until someday again. When BEE actively began analyzing and labeling the air conditioners, we acquired some good one in type of 5 star air conditioners. The newest and probably the most environment friendly know-how that is out there in market at the moment is the Inverter Technology for air conditioners. Inverter know-how is designed in such a method that it can save 30-50% of electrical energy (models consumed) over a daily air conditioner. And since 2016, BEE has began give star scores to inverter know-how ACs as properly. And in 2018 BEE has merged the star score ranges of inverter and non inverter ACs. Nevertheless, let’s take a look at what is inverter know-how and how is it totally different from a non inverter BEE 5 star rated ACs.

How does an air conditioner work?

For most individuals, air conditioner simply throws cool air on the temperature one units it at. However does it actually work that approach? The truth is air conditioner throughout cooling course of, takes the indoor air, cools it by passing it by way of evaporator and throws it again within the room. It is fairly reverse to how our good previous air coolers used to work. Air coolers used to take outdoors air, cool it with water and throw it in. However air conditioners simply work on inner air. Together with evaporator air conditioner additionally has a compressor that compresses the fuel (refrigerant) within the AC to chill it that in flip cools the incoming inner air from the room.

In a daily air conditioner:

The compressor is both off or on. When it is on, it works at full capability and consumes full electrical energy it is designed to eat. When the thermostat reaches the temperature degree set within the AC, the compressor stops and the fan (in AC) continues to function. When the thermostat senses that the temperature has elevated, the compressor begins once more.

What is Inverter Air Conditioner?

The inverter know-how works like an accelerator in a automotive. When compressor wants extra energy, it provides it extra energy. When it wants much less energy, it provides much less energy. With this know-how, the compressor is all the time on, however attracts much less energy or extra energy relying on the temperature of the incoming air and the extent set within the thermostat. The velocity and energy of the compressor is adjusted appropriately. This know-how was developed in Japan and is getting used there efficiently for air conditioners and fridges. This know-how is presently out there solely in cut up air conditioners.

What is advantage of Inverter Technology?

Each air conditioner is designed for a most peak load. So a 1.5ton AC is designed for a sure measurement of room and 1 ton for a special measurement. However not all rooms are of similar measurement. A daily air conditioner of 1.5ton capability will all the time run at peak energy requirement when the compressor is operating. An air conditioner with inverter know-how will run constantly however will draw solely that a lot energy that is required to maintain the temperature secure on the degree desired. So it type of routinely adjusts its capability based mostly on the requirement of the room it is cooling. Thus drawing a lot much less energy and consuming lesser models of electrical energy.

Though air conditioner with Inverter Technology adjusts its capability based mostly on the room requirement, it is essential to put in a proper sized air conditioner in a room. Please just remember to consider the room and air conditioner capability earlier than you make a purchase order.

What’s the distinction between Inverter Technology AC and BEE 5 star non inverter AC

  1. Inverter know-how air conditioners are variable velocity/ variable tonnage air conditioners and thus operationally they’re fairly totally different from common air conditioners which have single velocity compressors and single tonnage.
  2. Inverter know-how air conditioners modify their velocity/tonnage relying on warmth load of a room. Whereas common air conditioners don’t.
  3. Each room has a special warmth load, even when they’re of the identical measurement. The warmth load will depend on numerous elements as we’ve listed on our article: Issues that influence electrical energy consumption in air conditioners. To offer you an analogy, each human being is totally different; even then the waist sizes of most trousers out there out there are fastened (leaving those with elastic). Inverter Technology AC is identical to a trouser with an elastic waist that may modify to the dimensions. The opposite profit is that even when the waist measurement will increase or decreases, the trouser with elastic will regulate accordingly. Common Air Conditioners are fastened measurement.
  4. Based mostly on the info on energy consumption by BEE, Inverter ACs of BEE Three star scores are about 7% extra power environment friendly than BEE Three star rated non inverter ACs.
  5. The warmth load in a room doesn’t stay fixed and it varies from seasons, varies based mostly on variety of individuals, varies between day and night time, varies based mostly on local weather profiles of your location. To take the identical analogy we talked about above, the waist measurement will increase or decreases with the quantity of meals one eats or the quantity of train one does. In order a trouser with elastic waist can work properly, an air conditioner with inverter tech can work nicely.

Energy Consumption of Inverter and non inverter air conditioners.

Based mostly on knowledge from BEE in 2018, under is the consultant (median) pattern of energy consumption of Air Conditioners of varied tonnage and star scores:

zero.75 ton 1 ton 1.5 ton 2 ton
1 Star AC (principally non Inverter) 627 843 1246 1648
2 Star AC (principally non Inverter) 596 800 1184 1626
Three Star AC (mixture of Inverter and non Inverter) 542 747 1104 1448
Four Star (principally Inverter) 464 645 945 1293
5 Star (principally Inverter) 450 554 840 1113
Annual Electrical energy Consumption (Models or kWh for 1600 hrs) based mostly on knowledge from BEE

Are Inverter know-how air conditioners sluggish in cooling?

A number of individuals have considerations that Inverter Technology air conditioners don’t cool nicely or cool slowly. Nevertheless allow us to take this picture as reference to know how inverter AC works:

Inverter AC

Non inverter ACs are fastened velocity ACs, the place as inverter ACs are variable velocity ACs. Non inverter ACs have compressors that go “On” and “Off”. Whereas inverter ACs have compressors which might be “On” on a regular basis. As non inverter ACs are sized for peak summer time warmth load, they’re over-sized all the opposite occasions (in reality more often than not individuals oversize even for peak summer time season). The disadvantage of the identical is that the AC “Over cools” more often than not. So for those who set AC at temperature of 25, it will cool it right down to 23 or 22. Now one would query: then what is using thermostat? Nicely the thermostat (in a non inverter AC) switches off the compressor when the surface temperature has reached 25. However lots has occurred earlier than that. In an AC, refrigerant strikes from liquid to fuel (by taking warmth from the room) and then again from fuel to liquid because the compressor compresses it. But when the refrigerant is extra and warmth within the room is much less (which occurs in over sized AC), it doesn’t get sufficient warmth from the room to transform from liquid to fuel and it retains shifting as liquid. Now when the thermostat detects temperature and switches off the compressor, the refrigerant nonetheless stays in liquid state and thus has capability to take warmth from room to transform to fuel. And so it takes extra warmth from the room and cools the room under the set temperature.

As compared, the inverter tech AC modifications the move fee of refrigerant based mostly on the warmth of the room. When warmth is much less, the move price is much less, when warmth is extra, the movement fee is extra. And it doesn’t change off the compressor ever. It simply makes positive that if temperature setting is 25, it is maintained at that degree.

So the distinction is: non inverter AC would over cool as proven within the image. Whereas inverter AC will cool optimum. And thus one might really feel that inverter AC doesn’t cool or is sluggish.

Is there a Window AC with inverter know-how obtainable in market?

In 2018 LG and Voltas have launched new fashions LG JW-Q18WUZA and Voltas 185V DZA  that are Window AC fashions and have Inverter Technology compressor. They’ve ISEER ranges just like BEE Three star rated cut up Air Conditioners.

Are there Star Scores for Inverter ACs?

In 2016, BEE launched a brand new star score commonplace for Inverter Technology ACs as nicely. In 2018 all inverter AC fashions are in BEE Three, Four and 5 Star score ranges on BEE. To know extra about new star score requirements for Inverter ACs, you might learn this web page on our web site: Perceive What is ISEER and Star Labeling of Inverter Air Conditioners in India.

Greatest Inverter ACs in India

Listed here are some handpicked fashions:

Greatest 1.5 ton Cut up Inverter AC – Hitachi RSD517HBEAW (Toushi 5100X)

The three most necessary issues that folks anticipate from an air conditioner are: 1) It ought to cool properly 2) It shouldn’t eat plenty of electrical energy and Three) It must be sturdy. Out of those Three, the primary is dependent upon the cooling capability or the tonnage of an air conditioner and when you’ve got calculated the suitable tonnage as talked about above and you will have derived 1.5 ton as your cooling requirement then this specific AC from Hitachi is an ideal match in case you are on the lookout for the “Best” 1.5-ton Air Conditioner. Very first thing first, Hitachi is a model that doesn’t grossly undersize its actual tonnage as in comparison with advertising tonnage. This AC has a cooling capability of 5100 watts which is equal to 1.46 ton. This AC is a BEE 5 star rated air conditioner with ISEER of Four.6 and nominal energy consumption of 1440 watts. However as this is an inverter tech air conditioner, it will range its tonnage in addition to energy consumption based mostly on the necessity of the room. Like all Hitachi Air Conditioners, it comes with 100% copper warmth exchangers which make them fairly sturdy. It additionally has Hitachi’s newest Expandable Inverter AC know-how which helps it auto regulate its operations based mostly on circumstances inside and outdoors the room and additionally on altering climate. And the perfect factor about this AC is that with all issues good, it doesn’t value a bomb. So, it is a very good AC with excessive effectivity, sturdiness and cooling and doesn’t value rather a lot.

Execs: Excessive power effectivity at reasonably priced worth. Expandable Inverter Tech to optimize efficiency relying on circumstances. 100% Copper. Has Stabilizer free operation. Hitachi is a Premium Model and is giving 5 yr guarantee on Inverter PCB in 2018.

Cons: Doesn’t have auto clear function which might have been good. Hitachi is recognized to offer cooling capability higher than advertising tonnage, however this mannequin is barely decrease, however nonetheless higher than many different fashions in market. A primary mannequin (not function wealthy).

Key Specs: Nominal Cooling Capability: 5100 Watts, Nominal Energy Consumption: 1440 watts, ISEER: Four.6, R410A, 100% Copper, Annual Energy Consumption: 848 models.

Greatest price range 1.5 ton Cut up inverter AC – Service CAI18ES3C8F0 (Ester 3i)

If you’d like an inverter AC on your room to have higher consolation or to save lots of electrical energy, your utilization is not very excessive, and you need a mannequin that is not costly, then the most effective fashions out there come from one other premium model: Service. It’s Ester 3i mannequin is a BEE Three star rated mannequin with nominal cooling capability of 5200 watts (which is 1.48 tons), nominal energy consumption of 1690 watts and ISEER of three.92. The ISEER quantity places it among the many prime fashions in BEE Three star rated ACs. However nonetheless the mannequin is among the many least expensive inverter ACs out there. On prime of it the mannequin has PM 2.5 filter to take away pollution from air (to enhance air high quality), has excessive ambient working (works even at 55 levels outdoors temperature), stabilizer free operation (150-280V) and has a sturdy design with 100% copper condenser. This yr, Service has additionally come out with a sturdy outside inverter PCB design which was a ache level for inverter PCBs until final yr. So in case you are on the lookout for a worth for cash purchase, then this AC is a terrific selection.

Execs: Good power effectivity and cooling at an inexpensive worth. Auto Cleansing performance. Service additionally has refrigerant leakage detector. Comes with a rust guard for outside unit.

Cons: Primary mannequin which lacks excessive finish options like sensors for efficiency optimization and filters (solely PM 2.5 filter). Though inverter ACs are fairly normally, however amongst inverter ACs, this one has barely extra noise.

Key Specs: Nominal Cooling Capability: 5200 Watts, Nominal Energy Consumption: 1690 watts, ISEER: Three.92, R410A, 100% Copper, Annual Energy Consumption: 1028 models.

Most Power Environment friendly (Electrical energy Saving) 1.5 ton AC – Daikin FTKF50TV16U

Daikin is one other premium model which is recognized for making nice air conditioners with excessive power effectivity. And this yr the mannequin with highest power effectivity in 1.5 ton ACs is Daikin FTKF50TV16U. This AC has nominal cooling capability of 5280 watts and nominal energy consumption of 1290 watts. The ISEER of this AC is 5.33 which is highest amongst all 1.5 ton ACs. This AC additionally boasts of a number of options like: 100% copper, Stabilizer Free Operation (130-265V), Coanda Airflow (for higher air circulation within the room and thus higher cooling all throughout), Silent operation, Fast Cooling and sleep mode for higher cooling at night time. Being probably the most environment friendly AC out there, it can be barely costly. But when your utilization of AC is actually excessive, then you will need to go for it.

Execs: Tremendous excessive power effectivity. Coanda airflow helps in higher all-round cooling. Sleep mode might help enhance consolation degree at night time.

Cons: Doesn’t have too many air filters or options. Working temperature of 50 levels is barely on the decrease aspect compared to different manufacturers.

Key Specs: Nominal Cooling Capability: 5280 Watts, Nominal Energy Consumption: 1290 watts, ISEER: 5.33, R32, 100% Copper, Annual Energy Consumption: 767 models.

Greatest 1 ton cut up Inverter AC – Hitachi RSG512HBEAW (Toushi 5100X)

Not a lot totally different from the 1.5 ton mannequin, this 1 ton mannequin from Hitachi once more comes out as the perfect when it comes to efficiency and worth. This AC has a cooling capability of 3516 watts which is precisely 1 ton. This AC is a BEE 5 star rated air conditioner with ISEER of Four.65 and nominal energy consumption of 942 watts. However as this is an inverter tech air conditioner, it will range its tonnage in addition to energy consumption based mostly on the necessity of the room. Like all Hitachi Air Conditioners, it comes with 100% copper warmth exchangers which make them fairly sturdy. It additionally has Hitachi’s newest Expandable Inverter AC know-how which helps it auto regulate its operations based mostly on circumstances inside and outdoors the room and additionally on altering climate. And one of the best factor about this AC is that with all issues good, it doesn’t value a bomb. So, it is a very good AC with excessive effectivity, sturdiness and cooling and doesn’t value so much.

Execs: Excessive power effectivity at reasonably priced worth. Expandable Inverter Tech to optimize efficiency relying on circumstances. 100% Copper. Has Stabilizer free operation. Hitachi is a Premium Model and is giving 5 yr guarantee on Inverter PCB in 2018.

Cons: Doesn’t have auto clear function which might have been good. Hitachi is recognized to provide cooling capability higher than advertising tonnage, however this mannequin is barely decrease, however nonetheless higher than many different fashions in market. A primary mannequin (not function wealthy).

Key Specs: Nominal Cooling Capability: 3516 Watts, Nominal Energy Consumption: 942 watts, ISEER: Four.65, R410A, 100% Copper, Annual Energy Consumption: 586 models.

Greatest price range 1 ton cut up inverter AC – Service CAI12ES3C8F0 (Ester 3i)

As within the case of greatest 1 ton AC, even in greatest finances 1 ton inverter AC, the identical vary from Service comes throughout as the perfect mannequin in case you are on the lookout for a finances 1 ton inverter AC. Ester 3i mannequin is a BEE Three star rated mannequin with nominal cooling capability of 3500 watts (which is zero.99 tons), nominal energy consumption of 1100 watts and ISEER of three.92. The ISEER quantity places it among the many prime fashions in BEE Three star rated ACs. However nonetheless the mannequin is among the many least expensive inverter ACs out there. On prime of it the mannequin has PM 2.5 filter to take away pollution from air (to enhance air high quality), has excessive ambient working (works even at 55 levels outdoors temperature), stabilizer free operation (150-280V) and has a sturdy design with 100% copper condenser. This yr, Service has additionally come out with a sturdy outside inverter PCB design which was a ache level for inverter PCBs until final yr. So in case you are on the lookout for a worth for cash purchase, then this AC is a fantastic selection.

Execs: Good power effectivity and cooling at an inexpensive worth. Auto Cleansing performance. Service additionally has refrigerant leakage detector. Comes with a rust guard for outside unit.

Cons: Primary mannequin which lacks excessive finish options like sensors for efficiency optimization and filters (solely PM 2.5 filter). Though inverter ACs are fairly usually, however amongst inverter ACs, this one has barely extra noise.

Key Specs: Nominal Cooling Capability: 3500 Watts, Nominal Energy Consumption: 1100 watts, ISEER: Three.92, R410A, 100% Copper, Annual Energy Consumption: 694 models.

Most Power Environment friendly (Electrical energy Saving) 1 ton AC – Hitachi RSB512HBEAP (Kashikoi 5100X+)

In case you are in search of the mannequin with highest ISEER out there, then you’ll want to take a look at Hitachi RSB512HBEAP (or Kashikoi 5100X+). This mannequin has an ISEER of 6.1 which is the very best ever seen in Indian market. It has a rated cooling capability of 3580 watts (or 1.02 ton) and energy consumption of 741 watts. It has an annual electrical energy consumption (for 1600 hrs) of 455 models which might be very near what your air cooler would eat for that a lot utilization. And on prime of this effectivity, this mannequin boasts a number of the newest applied sciences from Hitachi like Expandable Inverter Compressor (for efficiency optimization based mostly on inner and exterior circumstances) & Delicate Dry Technology (retains evaporator dry which reduces dangerous odour). This mannequin additionally has a stabilizer free operation and is a 100% copper mannequin. The mannequin doesn’t have lots of options and thus is not very costly too. Nice purchase in case your utilization of AC is fairly excessive.

Execs: Greatest in school power effectivity. Excessive Cooling capability. Sturdy (100% Copper). Eco Pleasant Refrigerant.

Cons: Lack of sensors for efficiency optimization and additionally of filters for indoor air high quality.

In case you are in search of most power environment friendly inverter ACs, right here is the listing:

Greatest BEE 5 & Four Star Rated Inverter Air Conditioners

 

Click on on a class button under to decide on class.

To know extra about BEE Star Score of Inverter Air Conditioners verify this web page on our web site: Perceive What is ISEER and Star Labeling of Inverter Air Conditioners in India

Greatest BEE Three Star Rated Inverter Air Conditioners

Click on on a class button under to decide on class.

Lesser recognized advantages of Inverter Technology

  • Common motors want Three-Four occasions extra present (greater than operating present) at startup. So the inverter/generator measurement wanted to run any AC or Fridge will increase considerably. However Inverter Technology air conditioners and fridges have variable velocity motors that begin up progressively needing a lot lesser present at startup. Thus the dimensions of inverter/generator required to startup is much less. For e.g. A 1.5 ton fastened velocity AC that runs at about 10 Amp present may have as much as 30 Amp present at startup and thus a 5 kVA inverter/generator. However an inverter know-how Air Conditioner wants about 6-7 Amp present and not far more at startup and thus a 1.5 kVA or 2 kVA inverter/generator is ok to help it.
  • Common motors have a lot decrease energy issue. In business and industrial connections there is penalty for low energy issue and rebates for greater energy issue. An inverter know-how motor could have energy issue near unity (or 1) which not solely leads to lesser electrical energy consumption but in addition assist get rebates on higher energy issue.
  • In case you are planning to make use of Photo voltaic PV for air conditioner, then it is the most effective to make use of inverter know-how air conditioner or fridge as it not solely reduces the dimensions of PV panels as a result of it consumes lesser electrical energy, it additionally reduces the dimensions of inverter to be put together with the PV panel.

Brief video for ideas to purchase one of the best air conditioner in India

 

 

Calculator for Sizing Air Conditioners in India

Choose your metropolis, dimensions of room, utilization hours and daylight checkboxes to get our suggestions. The inputs are on the left measurement and our suggestions on the suitable aspect. Additionally please observe that these calculations are for a daily room in a home. If the room measurement is greater than 400 sq ft then it can be higher to name an engineer to do the analysis.

Air Conditioner Sizing Calculator for India

(Notice: This calculator is for a residential setup. It assumes a daily room with some furnishings, primary home equipment and Four individuals within the room. Please don’t use the numbers for a business setup.)

Outputs:

Please choose a metropolis

Measurement of Air Conditioner that you simply want:

Notice:

Yearly Models Consumption Yearly Electrical energy Prices Approx Value of Shopping for
BEE 1 Star
BEE 2 Star
BEE Three Star
BEE Four Star
BEE 5 Star

 

Verify this hyperlink to see Prime Ten Air Conditioners in India for Electrical energy Financial savings: http://wp.me/p4hAhQ-4I

 

Concerning the Writer:
Abhishek Jain is an Alumnus of IIT Bombay with virtually 10 years of expertise in company earlier than beginning Bijli Bachao in 2012. His ardour for fixing issues moved him in the direction of Power Sector and he is eager to study buyer conduct in the direction of Power and discover methods to affect the identical in the direction of Sustainability. Extra from this writer.