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  1. #1
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    Going green Chiangmai

    Hello, can anyone answer my questions?

    If i use LED lighting 220v 3w,5w,9w appropriately can i power these from solar panels. Im not looking to run the house just lights.

    Secondly can anyone suggest a good solar water panel company, place in Chiangmai?? Would the PPR piping be ok for this, or is best to use copper?

    Cheers

    Ben
    im hot its so hot today.......milk was a bad choice!

  2. #2
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    Chiangmai LED By ABO Trading Limited Part.

    I am looking here at solar power for LED and LED's and solar heater. Im not sure on prices but found one place selling LED bulbs for 330 baht each 5w. Thats 1/3 of what the cheapest price in home pro is, might have to do some testing!!!!

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    Quote Originally Posted by benlovesnuk
    Secondly can anyone suggest a good solar water panel company, place in Chiangmai??
    I got mine from the government electric company out north of CM, where they have a research facility

    if you want to know exactly where, I will try to get the info

    they are cheaper than most of the advertised companies and good quality, work well

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    Quote Originally Posted by benlovesnuk
    If i use LED lighting 220v 3w,5w,9w appropriately can i power these from solar panels
    solar panels don't give out 220V as far as I know, but I am sure you can find appropriate bulbs

  5. #5
    Crepitus
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    Well firstly, as the man said, solar panels and a bank of batteries plus an inverter will be required to power 240vac LED Lighting. Very expensive proposition.
    If you have not already purchase your LED lighting then you may be better off getting 12v units ( a lot cheaper I expect as no transformer or voltage regulator etc). Then you will need just a deep cycle vehicle battery or two connected to your solar panels.
    From a purely economics point of view buying 3w or 6w compact florescents, to replace existing incandescent globes..assuming you have them, may be a better option.
    A domestic solar setup has rather a long amortization period before you see any return

  6. #6
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    Quote Originally Posted by DrAndy View Post
    Quote Originally Posted by benlovesnuk
    Secondly can anyone suggest a good solar water panel company, place in Chiangmai??
    I got mine from the government electric company out north of CM, where they have a research facility

    if you want to know exactly where, I will try to get the info

    they are cheaper than most of the advertised companies and good quality, work well
    yes please Dr.A can i deal with them directly?

    do they just do solar heaters or solar electric too?

    did you go for a tank and panel system combined or other? Thanks for the help

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    they make tank and panel systems combined, not seperate

    they also do fruit drying cabinets

    and yes, you go up there and order from there; they will deliver and set up the system

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    Quote Originally Posted by Crepitus View Post
    Well firstly, as the man said, solar panels and a bank of batteries plus an inverter will be required to power 240vac LED Lighting. Very expensive proposition.
    If you have not already purchase your LED lighting then you may be better off getting 12v units ( a lot cheaper I expect as no transformer or voltage regulator etc). Then you will need just a deep cycle vehicle battery or two connected to your solar panels.
    From a purely economics point of view buying 3w or 6w compact florescents, to replace existing incandescent globes..assuming you have them, may be a better option.
    A domestic solar setup has rather a long amortization period before you see any return
    hi thank you for your reply. When you say expensive what is the price?

    i havent bought anything yet, but im not worried about return,i want sustainable energy for my house and business. Outlay if not too unrealistic is fine, as long as the conversion is effecient.

    They sell pv solar panels inverters and battery for 130 watt for 22,000 baht would it be better to use many of these in an array or higher output from less?

    To me the benefit of solar heating is obvious. I think if Leds are 300 baht and arent uv they serve many benefits, and low consumption for solar PV.

    Am i wrong?
    Last edited by benlovesnuk; 05-10-2011 at 10:13 PM.

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    Quote Originally Posted by DrAndy View Post
    they make tank and panel systems combined, not seperate

    they also do fruit drying cabinets

    and yes, you go up there and order from there; they will deliver and set up the system
    Dr.A did they attatch to your roof with metal runners? I think you said you used copper for hot did you buy this yourself?
    How does your system work, are you happy?
    Appreciate the heads up.

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    In the end, I made a small tower at the back of my house and they just sat it on that - the roof was not really an option due to the type of tiles, and the roof alignment

    I think that was shown on my thread about my concrete box in the city

    It was connected with copper, I think they allow you maybe 5m included in the price (which I cannot remember at the moment, maybe B40,000?)

    the system works almost too well, the water can be scalding hot so we need to warn people. I suppose I could put a partial cover when the sun is strong to reduce the heat
    I have reported your post

  11. #11
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    Quote Originally Posted by DrAndy View Post
    In the end, I made a small tower at the back of my house and they just sat it on that - the roof was not really an option due to the type of tiles, and the roof alignment

    I think that was shown on my thread about my concrete box in the city

    It was connected with copper, I think they allow you maybe 5m included in the price (which I cannot remember at the moment, maybe B40,000?)

    the system works almost too well, the water can be scalding hot so we need to warn people. I suppose I could put a partial cover when the sun is strong to reduce the heat
    Ok. Thats really good i was expecting 59,000 baht.
    We are aligned east to west, with the roof facing almost exactly south and north. I think however a separate building will be more suitable, maybe more low key too.

    Ill have to have a look at the thread.

    I was thinking about solar pv and maybe wind turbine combo, im going to have to measure the wind speed but it would be great if i can dig a bit more green.

    We are also thinking of growing our veg and fruit, if anyone has suggestions for fruit trees and the like it would be much appreciated.

    Thank you

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    We have a thermostatic shower, which has a cut off for temp so hopefully not a problem. Do you mean regulating hot is hard because it goes from cold to very hot without much inbetween?

    cheers Dr.A

  13. #13
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    Quote Originally Posted by benlovesnuk View Post
    Quote Originally Posted by Crepitus View Post
    Well firstly, as the man said, solar panels and a bank of batteries plus an inverter will be required to power 240vac LED Lighting. Very expensive proposition.
    If you have not already purchase your LED lighting then you may be better off getting 12v units ( a lot cheaper I expect as no transformer or voltage regulator etc). Then you will need just a deep cycle vehicle battery or two connected to your solar panels.
    From a purely economics point of view buying 3w or 6w compact florescents, to replace existing incandescent globes..assuming you have them, may be a better option.
    A domestic solar setup has rather a long amortization period before you see any return
    hi thank you for your reply. When you say expensive what is the price?

    i havent bought anything yet, but im not worried about return,i want sustainable energy for my house and business. Outlay if not too unrealistic is fine, as long as the conversion is effecient.

    They sell pv solar panels inverters and battery for 130 watt for 22,000 baht would it be better to use many of these in an array or higher output from less?

    To me the benefit of solar heating is obvious. I think if Leds are 300 baht and arent uv they serve many benefits, and low consumption for solar PV.

    Am i wrong?
    no mate you ain't wrong, re Solar electric power it is really up to you to do the numbers, main cost issue to me would be initial outlay plus ongoing cost of battery replacement every 2- 3 years ( not very green as you have to dispose of 'em)
    I had solar and 4 x 150ah/12v deep cycle batt, inverter etc on a sail boat .. initial cost was approx: Panels 2x 25000 baht, batteries 35000bt, inverter 30000bt,solar output regulator 3000 baht...ran only microwave and fridge and occasionally aircon . ..output from panels about 4-5 amps in full sun......overall was just enough for my needs but often resorted to the generator or shore power for domestic use and to charge batteries.
    Solar water heating on the other hand is cheap and easy here, easy to build your own array of black pipes on the roof or ...commercial solar units very efficient too, no idea of pricing.
    Have just electric demand shower heaters which we rarely use and 3w fluoros most light fittings
    have fun..
    Last edited by Crepitus; 07-10-2011 at 06:45 AM.

  14. #14
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    Quote Originally Posted by benlovesnuk View Post
    We have a thermostatic shower, which has a cut off for temp so hopefully not a problem. Do you mean regulating hot is hard because it goes from cold to very hot without much inbetween?

    cheers Dr.A
    well, you are more sophistcated than us - our shower and taps are not thermostatic, so the hot can be very hot when it comes

    Of course, it does not come on scalding immediately, with the pipework in between which cools it initially

    the company is EGAT, by the way

    as for the cost, that would depend on which size you needed, but they wre quite a bit cheaper than the imported ones (the Chinese ones compare but they are not too good quality)

    this type can take pressure so you can use the same pump for hot and cold water

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