[jinojohnt]

By reading through the site, it looks like a Direct Current air conditioner. Going by their claim of not using the compressor (and hence using less electricity), I think it should be possible to run them on inverter batteries.

[Thad E Ginathom]

If you click on the brochure PDF link, there are some diagrams.

It means nothing to me. Can someone who didn't fail dismally at physics explain how they are using solar heat to cool?

[anupmathur]

Originally Posted by Abes

I found this about solar air conditioner. They are offering big a/c systems for commercial use. Have anyone checked/tried it out?

This is old technology that was widely used in refrigerators and other cooling applications.
It is still used for refrigerated ware houses or wherever 'waste' heat is available as a source of energy.

Absorption or Adsorption Cooling Systems.
Absorption refrigerator - Wikipedia, the free encyclopedia

Thermax, India offer some systems too:
http://www.thermaxindia.com/Absorption-Cooling.aspx

[Thad E Ginathom]

Thanks.

Now I remember, from my distant childhood, gas refrigerators, which had a flame at the bottom at the back --- and how impossible to light they were when the flame went out!

[deadman]

Originally Posted by recshenoy

IMHO, 15 hours a day surely needs a 5 start rated A/C or at least an AC which has lower power consumption.

What is the consumption of LG A/C you bought?

Just like to share my experience after Fitting Air conditioner.

Model : LG - LSA3NF3VF1 Capacity : 1.0 Ton 3 Star Rating
Daily Usage Of A/c : 12 hours (day night mix)
First Month Bill after fitting A/c: Rs 600 extra in Electricity bill.

[mobike008]

Originally Posted by deadman

Just like to share my experience after Fitting Air conditioner.

Model : LG - LSA3NF3VF1 Capacity : 1.0 Ton 3 Star Rating
Daily Usage Of A/c : 12 hours (day night mix)
First Month Bill after fitting A/c: Rs 600 extra in Electricity bill.

Thats a steal. I mean the negligible increase in EB even after using it for 12 hours a day

[Abes]

Originally Posted by anupmathur

This is old technology that was widely used in refrigerators and other cooling applications.
It is still used for refrigerated ware houses or wherever 'waste' heat is available as a source of energy.

Absorption or Adsorption Cooling Systems.
Absorption refrigerator - Wikipedia, the free encyclopedia

Thermax, India offer some systems too:
Thermax | Absorption Cooling

Originally Posted by Thad E Ginathom

Thanks.

Now I remember, from my distant childhood, gas refrigerators, which had a flame at the bottom at the back --- and how impossible to light they were when the flame went out!

So the flame is replaced by solar heating.

I checked with the mechanical engineer in our office, according to him, the system is low pressure, if there is a leak, air will go inside. Hence difficult to maintain.

Where as the compression system is high pressure. so if there is a leak, the refrigerant will leak to the outside. Hence it is easier to replace the refrigerant.

Its old technology and doesn't require much electrical power, why is it not popular? Cost or maintenance issues?

[anupmathur]

Originally Posted by Abes

....
Its old technology and doesn't require much electrical power, why is it not popular? Cost or maintenance issues?

As far as I know, there are no serious issues!
Why this technology was abandoned remains a mystery to me! It's probably because the West found it needlessly hazardous for home use! They do not have power outages, y'see.
I dare say with the pathetic state of electricity supply in India this technology would still be THE most suitable for our requirements!! At least your LPG gas cylinder doesn't act up!

[surd_biker]

Guys please suggest me a good split ac. Mumbai is becoming hotter day by day. Guess its the global warming effect. I have two bedrooms 150 + 110 sq ft. Which is the best split ac to buy? Also would a 1T be sufficient for 150 sq ft room? Also nowadays I am hearing a lot about multi room split acs which have only one outdoor unit for the two indoor units. Has anyone used these and any pros/cons of using these vis-a-vis two separate split acs?

[Thad E Ginathom]

I went for a stroll today and had a look around e-Zone shop, just window shopping.

Walked around the AC dept, and was shocked to see that Hitachi 2-ton is 56,000!

[nick17s]

definitely no "samsung" I have very bad experiences with 2 samsung window a/cs.

[sourav9385]

Hello all

I just purchased a Voltas Vertis Premium 1.5 Ton split, 3 Star with EER - 2.80 today for 23k. Price includes 4KVA stabilizer from Voltas and installation charges as well. Being a Sunday, the AC was just delivered to my place. Installation will be done tomorrow. Date of manufacturing printed on the unit is December 09.

Will let you all know how this works after it's installed. Thanks to all who helped me with my previous posts

[Abes]

Originally Posted by nick17s

definitely no "samsung" I have very bad experiences with 2 samsung window a/cs.

O Oh! I have two 1.5 ton Samsung window ACs with remote. They are just 5 months old. What problems did you face?

[tj123]

Originally Posted by Guite

Hi khoj,

I did a similar calculation (posted in a previously here) and what I found out was that buying a 5 star rated AC does not make much financial sense. It may make more financial sense if:- (a). You use high capacity e.g. 2.5 ton, and (b). Usage duration is very high, say 20 hours a day.

On the other hand you calculation confuses me. The difference between 5* and 2* from your list seem more like 1250-1080 = 170 watt = 0.17 units per hour.
Monthly consumption = 0.17 units x 15 hours a day x 7 days x 4 weeks = 71.4 units.
However my experience is that full power is consumed only about half the time. So 71.4 x 0.5 = 35.7 units @ Rs.5 = Rs.178.50p per month x 6 months usage in a year = Rs. 1071 per annum. In other words, the running cost of the 2* is Rs.1071 more than the 5*, year on year.

So theoretically, the pay back period for the above 5* model when compared to the 2* model is Rs.8000/Rs.1071 = 7.5 years!

Good calculation however it is based on an assumption that prices/ unit of electricity will remain constant. My friend Prices for power are going to double /triple in the coming years that when really efficiency matters.

However I always think green by consuming less resources. Go for energy efficient models the extra bit of money invested will pay dividends in future definitely.

[iamswift]

Bought Panasonic CS-KC18KKY
1.5T, 4*
Price around 30K.

CS-KC18KKY | econ Sapphire | Home Appliances | Panasonic India

Delivered and installed in same day.
No initial startup issues.