Lf/wtb: Solar Air Conditioner

[4kin4kar]

Anywhere in Trinidad sells these units? It's a do Inverter unit run by solar panels either grid tie or batteries.

[nervewrecker]

Whats you application? (why solar)

Size room also.

[baigan]

I wanna know too lol

[pugboy]

Not practical, energy requirements too much
Plus our ttec is very cheap so recoup cost time not worth it.

[sMASH]

usually with solar power, u store the energy in a battery. then u use the power with that voltage or u connect an inverter to convert the dc to ac current. an air condition compressor would require a lot of power to run properly. it would drain the battery quite quickly. and unless u have a lot of solar panels to recharge the battery, it will not be able to run for very long and then have to wait a long time to recharge the battery sufficiently.

[nervewrecker]

I think pricesmart had them (not sure).

But given the cost and lifespan of components in most generic units you might get 5 years at most before it gone through. I doubt anyone saving that much on electricity in 5 years. Not sure if the inverter units have coils made from another material and lines are thicker as I have very very little experience with them.

[nervewrecker]

usually with solar power, u store the energy in a battery. then u use the power with that voltage or u connect an inverter to convert the dc to ac current. an air condition compressor would require a lot of power to run properly. it would drain the battery quite quickly. and unless u have a lot of solar panels to recharge the battery, it will not be able to run for very long and then have to wait a long time to recharge the battery sufficiently.

I think the inverter units work on 12V DC. As I said above, have very little experience with them.

A day when I have time i'll clamp an 18000 btu and see what kind of current it pulls. I think the owner clamped it at 7A for some time before it throttled down.

[pugboy]

Not to mention deep cycle batteries not cheap

Too bad we no longer design buildings with air circulation in mind, high ceilings etc.

I actually brought down a solar powered roof ceiling fan to extract hot air from ceiling
Never installed it though.

[sMASH]

7A at 120 v... not too bad. a proper inverter should also be able to handle the initial start current draw as well.
only problem is, i got a couple of panels that are about 1.5 feet by 4 feet each, and they can only give about 100w total at optimum conditions.
that is at least 7times less recharge than usage and look how much collection area with that. it is possible, but not feasible.

[nervewrecker]

It actually throttle down to about 3A after

[adnj]

These are 48v DC units. You can direct connect to the panel or battery bank. You can also connect to AC grid. They require about 1000 watts to operate (about 12 standard panels).

[nervewrecker]

These are 48v DC units. You can direct connect to the panel or battery bank. You can also connect to AC grid. They require about 1000 watts to operate (about 12 standard panels).

Where did you get your information from? Im asking because I dont know much about them.

By bypassing the power supply and connecting 4 12V DC batteries in series to the system wouldn't void the warranty?

Might as well ask here one time:

If anyone has a failed inverter unit to discard i'll happily take it for someone (for research purposes). A guy wants to do some research to this and it might be pertaining to the thread topic.

[redmanjp]

OP wait another 2 or 3 yrs price of these things dropping fast

[EFFECTIC DESIGNS]

My 12,000 BTU split AC uses 1350 watts, run star capacitor would use maybe 3000 watts for the start up for a few seconds.

This AC uses around $2000 TT in T&TEC bill for the Year. Which is almost the price of the AC itself this is if its on constant and don't turn off cooling a 12x12. Which would be $10,000 in 5 years to run a 12K BTU AC.

As for solar you would have to cover your entire house roof with solar panels we talking a very large amount just to run a 12K BTU AC. And given the lifespan of the battery and inverter etc its probably nowhere near worth it to run a solar AC.

The only thing I can think off is significantly reducing the size of your room and or ceiling height to save current on the AC. OR you can buy a LASKO Wind Tunnel. Its a $500 Fan that pushes insane amount of breeze.

[adnj]

These are 48v DC units. You can direct connect to the panel or battery bank. You can also connect to AC grid. They require about 1000 watts to operate (about 12 standard panels).

Where did you get your information from? Im asking because I dont know much about them.

By bypassing the power supply and connecting 4 12V DC batteries in series to the system wouldn't void the warranty?

Might as well ask here one time:

If anyone has a failed inverter unit to discard i'll happily take it for someone (for research purposes). A guy wants to do some research to this and it might be pertaining to the thread topic.

Search for "48 volt air conditioning". These units do not connect to AC and were developed to remove the energy loss of the inverter for off the grid and low carbon footprint applications more than 5 years ago. These are manufactured in China. The Chinese are ramping up solar panel use and manufacturing to retire some of their coal fired generators.

There are also thermal heatpumps that provide water heating and AC.

[4kin4kar]

These are 48v DC units. You can direct connect to the panel or battery bank. You can also connect to AC grid. They require about 1000 watts to operate (about 12 standard panels).

Where did you get your information from? Im asking because I dont know much about them.

By bypassing the power supply and connecting 4 12V DC batteries in series to the system wouldn't void the warranty?

Might as well ask here one time:

If anyone has a failed inverter unit to discard i'll happily take it for someone (for research purposes). A guy wants to do some research to this and it might be pertaining to the thread topic.

Search for "48 volt air conditioning". These units do not connect to AC and were developed to remove the energy loss of the inverter for off the grid and low carbon footprint applications more than 5 years ago. These are manufactured in China. The Chinese are ramping up solar panel use and manufacturing to retire some of their coal fired generators.

There are also thermal heatpumps that provide water heating and AC.

Without grid tie.
http://www.alibaba.com/product-detail/D ... 0.0.hWnolH

With Grid
http://www.alibaba.com/product-detail/1 ... 0.0.JPaQqG


Wanted to know if anyone local selling these. I have never purchased stuff from alibaba.

[nervewrecker]

Is this for home use?

Average 12000btu costs approx $3k TT installed and a few $$$ extra on the light bill per month. Might last you a 5 years at most (for the cheaper brands at least).

That unit costs close to $5k TT and we haven't factored in duties and taxes. Bringing it in or buying local will cost you more than buying a conventional unit. Then there is warranty, after sales service and competent technicians to service / repair it.

On a side note, one of those units have a remote that looks like a jack front remote.

[4kin4kar]

Is this for home use?

Average 12000btu costs approx $3k TT installed and a few $$$ extra on the light bill per month. Might last you a 5 years at most (for the cheaper brands at least).

That unit costs close to $5k TT and we haven't factored in duties and taxes. Bringing it in or buying local will cost you more than buying a conventional unit. Then there is warranty, after sales service and competent technicians to service / repair it.

On a side note, one of those units have a remote that looks like a jack front remote.

My application is for cooling a space during daylight hours. This will be run all day everyday, hence my choice.

[adnj]

My application is for cooling a space during daylight hours. This will be run all day everyday, hence my choice.

There are units that are made by Lennox and others for central AC systems, also. If you are factoring in the cost of T&TEC supplied power, it may not be economical. As I said earlier, if you are off the grid, don't want to upgrade your supply current, concerned about outages or removal of price support, this may be an attractive option.

When considering solar energy systems will reduce or eliminate the need for a standby generator, some home and business owners are able to have a shorter payback period. Noise and reliability play a role, also.

Currently, solar is about 50% more expensive to use for large scale electricity generation than most any other method. The advantage is that PV panels are getting less expensive and more efficient (just like microprocessors), batteries are becoming less expensive and electricity generation can be spread onto the rooftops of nearly any structure or vehicle reducing the need for a very robust grid.

With load shedding, retirement of POS Powergen, new factories, increased potable water desalination, and air conditioning moving from a want to a need, there may be no economical choice for electricity other than solar in the near future.

[Dave-ve]

Fens in marabella had a solar AC unit on display for a while. You can check them.

[dude2014]

Went to Trade and Investment Expo Center of Excellence 2016.
Two companies can help.
1. D Rampersad has solar AC from one of it's subsidiaries.
2. Active General Traders has a deep cycle battery with four poles. It specifically designed to withatand
large draw down on current as the internal plates are much thicker. It is part of a setup to provide power
for homes. I have to call them. Didnot think much of it, until current went this week in the night and my
hand nearly went dead from fanning my baby girl .........

Dont know too much about the mechanics/science. You can give them a call.

Also Peakes and some other companies has AC with inverters to convert AC to DC power.
What I am thinking is once you can generate DC current which is supposed to be more powerful,
it can be fed directly into a DC operated Air Conditioner unit with the proper technology to do so.

Check them out. We are learning new things everyday.
Yeah remembering my hand as it still hurts.

[BRZ]

Went to Trade and Investment Expo Center of Excellence 2016.
Two companies can help.
1. D Rampersad has solar AC from one of it's subsidiaries.
2. Active General Traders has a deep cycle battery with four poles. It specifically designed to withatand
large draw down on current as the internal plates are much thicker. It is part of a setup to provide power
for homes. I have to call them. Didnot think much of it, until current went this week in the night and my
hand nearly went dead from fanning my baby girl .........

Dont know too much about the mechanics/science. You can give them a call.

Also Peakes and some other companies has AC with inverters to convert AC to DC power.
What I am thinking is once you can generate DC current which is supposed to be more powerful,
it can be fed directly into a DC operated Air Conditioner unit with the proper technology to do so.

Check them out. We are learning new things everyday.
Yeah remembering my hand as it still hurts.

Dude2014- look up O2 portable fan, they sell online and work with 6 D cell batteries, 10" fan that provides some nice breeze for little ones for night time power loss, I have used 2 of them for the past 8 years and they still work well to this day.

[dude2014]

Thanks for the info, will ckeck it out.

[sizzla89]

Good Morning Lads,

For those persons who are unaware of the theory behind the refrigerant cycle this diagram below shows you the processes that occur.

Similar to a traditional A/C system the refrigerant increases to a high temperature and also a high pressure via the compressor.

With that being said you can now see how the refrigerant increases in temperature and pressure via the Solar method.



Best Regards

[dude2014]

Interesting. Didnot actually see the Solar AC units. WIll give supplier a call and try to view same, even get schematics for same.

Thanks for the info

[adnj]

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