Okay I am new here but I have been lurking since Glen told me about it 4 years ago. So, it is time to give something back! I just finished 2 installs and testing on the Sanyo "mini split heat pumps" These are the first units that the user can limit the power of the compressor. This means you can set it for 300 watts, 600, and on up to the rated power. Most other units cycle the compressor on and off at full power. This unit has a DC compressor that the controller pulses to allow this low energy usage. You can turn it on at sunrise at 300 watts and pre-cool the house with a small 3/4 ton or 9,000 BTU unit. This is a strategy to allow a small unit to cool a rather large home. Getting ahead of the heat gain early. It is perfect with a tracked array!
There is a full review on the Arizona wind and sun forum under the energy section title "sanyo mini split". It has been tested for it's heating as well but this unit is really for air conditioning at 16 SEER. The billy goat building inspector that is up on Glen's hill would have a hard time sneaking up with this unit running. It is so quiet that when I first turned it on I thought the unit was defective!
Thanks again for all the great ideas over the years! [cool]
Interesting concept - PV powered air conditioning.
Here is Dave's thread on the Arizona solar site:
http://www.wind-sun.com/ForumVB/showthread.php?t=5104&highlight=mini+split+heat+pumps
If you are working this into a new house, you would be wise to first design in the basics of PASSIVE solar cooling to keep the load to a minimum and then make up the rest with the PV heat pump. This is the same strategy you want to use with solar heating - do the inexpensive or free PASSIVE things first and the high tech stuff after that.
Passive cooling strategies might involve:
• good insulation
• white roofs
• window placement and type of glazing
• external shading
• evaporative cooling
• solar chimneys
• ground contact floors
• earth berming
I have one of the smallest window AC units available...about 5000 BTU @ 520watts. Basically a bedroom sized unit. One of those $100 jobbies. I also have almost 1.3Kw of PV panels, an 800AH battery bank, and a 1000w continuous (3Kw surge) Heart inverter/charger (I've been gathering materiel in anticipation of moving for a few years now).
All this to say that on a really hot-n-sunny day, I should (if the maths hold true) be able to run that little window unit directly off of PV power (filtered through, but not affecting the charge level of the battery bank). 1000w in, 500w out...the batteries should remain full while I'm chillin' my cabin! [cool]
Even if start up surge is 5 times running usage, I should be just fine in my sub-200sf cabin since I can't foresee any other loads on the AC system during the day, when I'd need it (I'm trying to keep as many things 12vdc as possible ;D).
If I find that the surge is too great on start up, I'll look into either some starting capacitors or a larger dedicated inverter just for the AC unit. ;)
Thanks John for the link! I was going to do that! Reducing the heat gain/loss is always the best way to keep a living space comfortable. There are choices however that are "cast in cement" and technology has evolved here to address existing conditioned spaces. Big Time!
What I like about this stategy of running a small heat pump early in the day is it can work for non-optimum conditions and it is perfect for offgrid use where the solar panels are idling most of the time. Running the cooling or heating at 7 am on 300 watts and getting ahead of the buildings gain or loss was never an option with typical cooling/heating methods. Normal AC compressors have huge surges and are basically on or off. AC line surges and all that noise is not good for you or your other electrical users. I monitored power on a logging meter and there just is not any surge or even a hint of it. You can not even hear the different settings change.
On really hot days you will need to run the power up to 600 to 800 watts but this will be after the batteries have charged.
Phssthpok, wish I could give you good news about using starting capacitors or different inverters! The good news is this technology will spread as it is cheaper to build electronics that soft start. It is also easier on compressors that do not have to be designed for brut forcce conditions. Maybe by the time you ar ready there will be less expensive options. For now, it is amazing that there is this strategy! Hats off to Sanyo!
A great concept and a synergistic application for off grid PV which, like you say, may not be doing too much with the morning power anyway.
Thanks for the link.
Thanks Dave !
I was wondering what to do about air conditioning !
the heat pump is a real bonus too when it's chilly but not cold enough to fire up the wood stove
I think I will put it in the bed room of the 'barndominium'
it looks very practical
now there's another reason to build a tracker unit for the PV
Nice to see you here, Dave.
Thanks for the information. I may consider that myself but have to grow my system a bit more. Seems we always want more. d*
Dave, welcome and thanks for the tidbit. Areas that tend to have the best solar potential also seem to have the most need for AC! I hope this works out.
Quote from: Dave Sparks on June 23, 2009, 09:45:04 AM
What I like about this stategy of running a small heat pump early in the day is it can work for non-optimum conditions and it is perfect for offgrid use where the solar panels are idling most of the time.
Wouldn't your panels be busy recharging your battery bank from the night before?
-- Pritch
Quote from: Pritch on June 24, 2009, 01:43:41 AM
Dave, welcome and thanks for the tidbit. Areas that tend to have the best solar potential also seem to have the most need for AC! I hope this works out.
Quote from: Dave Sparks on June 23, 2009, 09:45:04 AM
What I like about this stategy of running a small heat pump early in the day is it can work for non-optimum conditions and it is perfect for offgrid use where the solar panels are idling most of the time.
Wouldn't your panels be busy recharging your battery bank from the night before?
-- Pritch
That would all depend on the size of your array and battery bank (BB), and how much power you consume after the sun goes down.
Consider that an AC unit will (most likely) be used exclusively during daylight hours in the summer time* when there probably isn't much actual
charging going on past, say noon on any given day...the BB will generally be full in short order.
*Think: long sunny days. At my latitude (~45 N) the sky starts to get light around 4:30 am, is light enough to wake me up around 5:30 and stays fairly light until around 9-9:30 PM during the height of summer. Daytime power use for light would be minimal, and since off-griders tend to be super conscientious about ghost loads and other sources of waste, I can't foresee anything other than say a small fridge consuming power while not in direct use.
The two most common methods of charge control (preventing overcharge conditions in the BB) are Pulse Width Modulation (PWM) and 'dump' loads. PWM is basically a micro circuit that alternately opens and closes the circuit from the panels to the BB. The 'width' of the open 'pulse' is determined by the BB State of charge, and increases as it approaches float levels, to the point that the circuit will remain 'open' for 99+% of the time, thus 'idling' your array and wasting potential energy manufacture.
'Dump' loading is where the charge controller is set up to switch on a 'load' (most commonly a resistance heater, but anything that uses power will do, so long as it uses
ENOUGH power) to 'burn off' excess power when the BB reaches a set state of charge. This allows one to keep the batteries 'full', while at the same time still getting some 'work' out of your panels. Either way, when the batteries are 'full', the panels are no longer actively
charging the batteries.
Pritch,
Thanks!
"Wouldn't your panels be busy recharging your battery bank from the night before?"
With a tracked array, low energy usage, hi ratio of solar to battery capacity, most of the systems I design, and use are in float by 11 am this time of year. By running a 300 watt air conditioner at 7 am there is hardly a difference in when the system goes to float. In float, most systems are using less than 200 watts.
Offgrid is all about different strategies tailored to location and the owner. This is just another one. The manufactures of Tracker's even now! leave out the best reason in the world to have one offgrid! If your sunny location can support one, they are the path to not using a generator. In winter, there are many days where the sun pops out for an hour in the am and then pops out again before sundown. If you are sized right you easily charge the batteries. If you can be flexible with energy usage there is no reason for a generator offgrid other than arc welding. The location does have to support a tracker! It is my philosophy!
Phssthpok,
You guy's up North do have some long days! Another stategy for long days is reducing absorb times on batteries. If you are lucky enough to be able to measure specific gravity you can reduce the absorb time and finish the charge during the long hours of float. There definately is charging going on in float and the other positive is alot lower water usage by the cell.
I was at the MREA Fair last weekend
attended a talk about 'Advanced PV"
pretty good
I asked about trackers
he said that a tracker would add about 30 % more energy captured (or more)
then someone asked about payback for the investment -- he said it would be a postive income payback -- but not much
So then I looked at trackers
wow are they expensive
I saw one that was $ 26,000 for 16 panels
you could just buy 5 or 6 KWatts more panels for that
got me to thinking there must be a cheaper way to home brew a tracker
from real cheap using a manual wind-up or weight system
or more automated geared motor/timer set ups
I have several ideas -- what do you recommend Dave ?
First HI Glen,
I want to build a pond up on my hill but my wife says it will bring that bear over from your hill. Did you make him go away?
Trackers....Glen has a home brew??? My old one still works but I just ran out of time and some aerospace company up here in the foothills actually wanted me after 12 years at sea with an equal but creatively filled resume gap from the old Hewlett-Packard company.
OK, I like the Wattsun AZ-125's ! You can get 1,800 watts of Sanyo's on them or 1,600 watts of most other brands. They are 6 inch pipe based and I have been to several islands in the caribbean where they have stood the ultimate test. If you buy one retail they are over 3 grand. If you have bought from them before and can tell good stories they are a lot less. Times are tight right now and good stories can go a long way! nuff said except talk with Michael Reed at Array Technologies.
They are simple and elegant and people who say they have alot of maintenance and you only get 30% more power just have never owned one. I turn down offgrid clients who do not want one. I want happy customers and tracking up here in the Sierra and alot of other places is a no brainer offgrid.
Somebody has to tell me how to convince my better half on that pond!
Dave and Phssthpok,
Excuse the brainfart! I forgot to consider that a system would be designed to deliver sufficient power in the dead of winter so there is typically a surplus in the summer. d* Thanks.
-- Pritch
On a slightly different tangent, yet still (sort of) on topic:
I had teased with the idea of fabricating a solar powered evaporative ammonia ice maker not only for food storage, but also for space cooling. Homepower Magazine has an article about a trough collector evaporating ammonia, which then gets re-absorbed overnight (or after covering the collector) causing stored water to be frozen.
(http://www.homepower.com/images/articles/thumbnail/HP53_pg20_Vanek/HP53_pg20_Vanek_page_1.jpg)(http://www.homepower.com/images/articles/thumbnail/HP53_pg20_Vanek/HP53_pg20_Vanek_page_2.jpg)
Use your ice (frozen water jug?) to make something similar to this (http://www.youtube.com/watch?v=zR9CA8lJGvs) and you're set! :D
but....
I would need the $6000 az 225 for my 12 Evergreen 205's
for 6000 I could just buy another 10 panels almost double the energy instead of 40 %
no payback there
now if I could build a tracker for ~ $1000, and I see no reason why I can't ---that will give me a good return on investment
I have posted a topicabout this over at the Wind Sun forum und the PV section
I don't want to reinvent the wheel so to speak if someone has already done it
I recall several discussions (http://www.google.com/custom?domains=www.fieldlines.com%3Bwww.otherpower.com%3Bwww.forcefieldmagnets.com&q=tracker&sa=Search&sitesearch=www.fieldlines.com&client=pub-6689574870108535&forid=1&channel=6019146814&ie=ISO-8859-1&oe=ISO-8859-1&safe=active&flav=0001&sig=9YAA3hciIHMnX_CG&cof=GALT%3A%23008000%3BGL%3A1%3BDIV%3A%23336699%3BVLC%3A663399%3BAH%3Acenter%3BBGC%3AFFFFFF%3BLBGC%3A336699%3BALC%3A0000FF%3BLC%3A0000FF%3BT%3A000000%3BGFNT%3A0000FF%3BGIMP%3A0000FF%3BFORID%3A1%3B&hl=en) about home brew trackers over at Fieldlines (http://www.fieldlines.com/).
Quote from: Windpower on June 24, 2009, 12:48:10 PM
but....
I would need the $6000 az 225 for my 12 Evergreen 205's
for 6000 I could just buy another 10 panels almost double the energy instead of 40 %
no payback there
now if I could build a tracker for ~ $1000, and I see no reason why I can't ---that will give me a good return on investment
I have posted a topicabout this over at the Wind Sun forum und the PV section
I don't want to reinvent the wheel so to speak if someone has already done it
When you say payback that means to me you are not offgrid but gridtied. All of my previous comments are based on the strategy of charging everyday offgrid in most all weather conditions. I do not know your situation but I will say that the Evergreens are one of the hardest sized panels to get up on a tracker. Just hard to get the square footage on the array. One strategy I use is a fixed and tracked array to get the best of both. I do not like the 10" pipe system AZ-225 because it is just too big. If you stand in front of an AZ-225 you will know what I mean.
To homebrew the big AZ225 one would take a gut check on how good you are, not to mention risking the cost of solar panels in an unproven design. The smaller AZ125 is doable but someone else will have to help.
In your math remember that solar panels power output is alot less than the nameplate but the power that is up on a tracker is there always at the right angle to the sun. I would also consider growing trees of AZ125's for offgrid,
diversify the threat of lightning if you will! Anything is possible with your time! It was possible to buy old satellite trackers years back for this. All the people that I have read about doing this have alot more time to fuss with this and end up with a non repeatable fixed mount on a pole. I sure would like to spend a weeks time and 1,000 dollars to get what you want!
Good Luck!
Thanks Dave
the idea I have in mind is based on the design innovation from a tracker at the energy fair
instead of using a suntracking sensor he recognized that the only difference from one day to the next is the length of the day --- the rate of travel is always the same (15 degrees per hour) I think he just pulsed the drive a degree every 4 minutes -- (If I did the math correctly)
so he just programmed a commercial timer to turn on at sunrise, pulse the drive a degree every 4 minutes and turnoff at sun set and then recycle to the east for each day of the year
I think I found the timer that will work for about $200
he also used a motor driving a chain drive for rotation -- simple (maybe I will use a garage door opener chain drive geared way down with a smaller motor -- another $200 or so )
the rest is just steel, concrete and sweat
he also had a linear drive for tilt -- I think a manual tilt change every month or so should be almost as good and not cost very much
Agree that automatic tilt is not worth it! Just remember how much loading is going on at the pivot point and the connection to it. It is a big sail and the wind loading is huge as the array grows. I would use big gears and avoid a chain for arrays over 100 square feet.
In the early '90's I lived in a upper level apartment whose wall mounted AC unit died in the middle of July, and it took a month for the apartment management to replace the unit. I opened the window and placed a box fan in it with the air flow going OUT and it kept the place bearable even during the 100 degree heat of high noon! The noise was a little bit annoying but after a while I didn't notice it.
Unless you want to be cold inside during the summer I think a permanently mounted system of several fans would do well to keep you comfortable, as well and keeping the air fresh as a side effect.
There's now a car on the market using PV panels to operate a internal fan system to do the same thing, so I'm sure this could be applied to a house.
Good point but it all depends on what you call comfortable! Most people like 75F and most do not like 85F and up. For a month I am sure you were fine. Try doing that year after year when there is an easy and free source of power that is just sitting there. Some climates work well with fans and some do not.
As for using a solar powered fan in an automobile that already has a power source I find the whole idea laughable and just more marketing for crazy people. just my opinion....
Quote from: Dave Sparks on June 24, 2009, 11:55:06 AM
First HI Glen,
I want to build a pond up on my hill but my wife says it will bring that bear over from your hill. Did you make him go away?
Trackers....Glen has a home brew??? My old one still works but I just ran out of time and some aerospace company up here in the foothills actually wanted me after 12 years at sea with an equal but creatively filled resume gap from the old Hewlett-Packard company.
OK, I like the Wattsun AZ-125's ! You can get 1,800 watts of Sanyo's on them or 1,600 watts of most other brands. They are 6 inch pipe based and I have been to several islands in the caribbean where they have stood the ultimate test. If you buy one retail they are over 3 grand. If you have bought from them before and can tell good stories they are a lot less. Times are tight right now and good stories can go a long way! nuff said except talk with Michael Reed at Array Technologies.
They are simple and elegant and people who say they have alot of maintenance and you only get 30% more power just have never owned one. I turn down offgrid clients who do not want one. I want happy customers and tracking up here in the Sierra and alot of other places is a no brainer offgrid.
Somebody has to tell me how to convince my better half on that pond!
I made a bear go away and I heard of another one that went away but I heard of another very interesting couple of bears between you and I.
I have dug 2 small ponds at my place and they have not seemed to attract bears, Dave. :)
My tracker works pretty good although I have a slight propane leak in the West side and every few months I have to add a pint or so.
Welcome to the fourm.
Dave you will have bears pond or no pond.
I have two ponds and have not seen a bear or a track at them yet.
Maybe the bears like my apple trees too much ???
There are a lot of good reasons to put in a pond, fire supresion,fish,wildlife,water storage for your plants animals, garden.
How well would a swamp cooler work on a solar set up?
Take care,W
OK, it is friday d* and I will schedule time this weekend to force (discuss) the better half into building a pond for next winter! Thanks guy's! I may have enough man cards to win now!
I think a rabbit fence around the pond might be good but fences have their problems with water I suppose?
I also seek advice on making my stream safely go into a pond with steep terrain. (hills) I suppose if I screw up and erode I may find gold.....
Whitlock,
I really wanted an evaporative cooler. They work great up here in the Sierra as we don't get much of the monsoon. They are low energy but they require water and maintenance which I am short on. The side benefit to having enough solar to charge just about every day in winter is too much solar for summer. The Sanyo mini split is a natural for this situation. We store 14,000 gallons but my wife, again, thinks that old sailors can become gardeners. Glen met her and may have an inkling to the "joy" that some of us enjoy or maybe endure..............I did get the USDA pond file from the forum so I can at least show her the pictures!
We have to present our cases properly, Dave.
I believe you are in the porphyry clay as we are and it makes a pretty well sealed pond by itself with little problem. I can take you down to mine to have a look. I expanded mine a couple years ago by digging the second one trying to not make it too big and dry it out. I find that the water does not get far into the clay and the clay makes a pretty good structure to hold the water as well. Well packed with the Bobcat or backhoe - wide enough to have a bit extra supporting them and under 6 feet deep does not require a permit as I read a while back.
I will probably take my backhoe down and modify mine as well as clean it out next year. Mine has a spring that produces 1/2 gpm in the summer and keeps both small ponds filled pretty decent. It is about the 2500 foot level on the mountain.
Would your pond be seasonal water only?
I can show you a few around the country and Whitlock has one nearby also.
"the inexpensive or free PASSIVE things first"
Don't forget an integral part of antebellum mansions....a breezeway!
Quote from: glenn kangiser on June 27, 2009, 02:14:46 AM
We have to present our cases properly, Dave.
Would your pond be seasonal water only?
I can show you a few around the country and Whitlock has one nearby also.
Yes to both Glen!
This may not work if you live in the desert southwest but I am curious if anybody has ever experimented with earthtubes as a method of providing a form of offgrid air conditioning ... I have seen this used as an example for a Passive Annual Heat Storage System (PAHS) but have also heard that it can be adapted for tradition framed houses ...
http://www.norishouse.com/PAHS/UmbrellaHouse.html
w*
Some of us have talked about it. I even thought about it today. Jonesy in Australia experimented with them I think but we never heard back on them.
Condensation is a problem that would need to be taken care of.
When we were building if we had of had 3 more months before the foundation started we were going to do a passive cool. Heating is too easy up here in the oak woodlands but cooling is a real challenge. We did cool down to 73F last night after our heatwave. We have those nasty 10 nights that do not cool each year and the heat pump in this thread has been the solution. The folks at Sanyo have told me they are going further with the design so stay tuned.
OK, a pond! Wife was very concerned about our seasonal stream on a steep hill causing mudslides, erosion and catastrophy with a pond. I would like to just store 10,000 gallons and use it for irrigation during June, july and august. If it made it to september, nice! The place I want it would gravity feed to our garden and be gravity fed from the stream when the last rain turns it off. I probably need to "present this case better to Glen" and see if a happy hour and dinner might get him to come down off his mountain and come over to mine ?
Has anyone used a pond for cooling. Seems like a heat pump thype set-up could use the cool water at the bottom of a pond as a refrigerant.
Quote from: Dave Sparks on June 30, 2009, 09:32:04 AM
I probably need to "present this case better to Glen" and see if a happy hour and dinner might get him to come down off his mountain and come over to mine ?
He would have to pay the toll fees to get passed me rofl rofl
The earth dams in this area hold well I have two ponds were I live and they hold back a lot of water.
The trick is the over flow.It needs to be built so it won't wash away.
You are welcome to come bye and look them over.
Later,W
Hmm - I may have to tie W to the from of my Dodge and bring him over too, Dave.
You may want to figure how much evaporation loss you may get and add for that too. I have had good luck with the porphyry clay holding and as w says - an overflow directed away from the dam could help. I currently do not have one except for a low spot, but I have not tried to capture the seasonal runoff yet. As good as things are at the dams now I think I probably will this year and add an overflow.
Some use wells for heat pump cooling, Ken but the water is said to be degraded as to temperature when returned to the well. I assume it would bring up the pond temp but probably could still benefit in the right situation. I'm off grid and the pond is far away so wouldn't be able to try.
Evaporation loss in this area is 60 inches :D
OK I will give you guy's a jingle after the 4th! Thanks for the offers and tolls.....
We'll be waiting, Dave.
Hmm. I'll have to clean out the front seat of the truck.... [waiting] :)
You can fit Kathy and Whitlock in that truck? ;)
rofl He had to clean out the front seat of his truck to fit Whitlock & Pat (Whitlock is over 6 ft & Pat is around 6'8" I think) ;D
They all went down to hell to work on the project Glenn's been working on the past few months...
Quote from: Dave Sparks on July 02, 2009, 11:52:52 AM
You can fit Kathy and Whitlock in that truck? ;)
It is a full size truck, so yes, if I take out the laser, tripod, stick, Makita tools, various bags of food and drink or stack them in the back seat and fold up the office divider (center folding backrest) .... caution - look out for stuff falling over the tops of the headrests....[scared]
Update: I just found the bag of fittings and glue I bought around a month ago for the water line behind the seat near the floor so there is more room now. Only took about an hour to find. Why do people make fun of me. [waiting]
I went out there & looked around for about 5 minutes & asked him if he'd looked in his truck yet - of course not, so after pulling out a few things, viola, there they were! ::)
Not totally true..... [waiting]
I had already looked in the truck three times.... [noidea'
It is not just you! I am told by my spouse that "men look where they think it should be and women just look for it" ??? c*
Still on the pond thing and we have narrowed it down to the logical dangerous location and the "have to use a pump but safe location. I will post a picture of the pond up above me on BLM land......I know what you are thinking d*
Men, being near perfect, cannot be bothered all of the time with the proper place or way to look for things. [waiting]
Looking forward to seeing the pix and will drop by to take a look as well as show you around when you are ready. :)
Quote from: Dave Sparks on July 06, 2009, 10:48:54 AM
It is not just you! I am told by my spouse that "men look where they think it should be and women just look for it" ??? c*
Still on the pond thing and we have narrowed it down to the logical dangerous location and the "have to use a pump but safe location. I will post a picture of the pond up above me on BLM land......I know what you are thinking d*
Did the fish make it though the fire in that pond?
I hope so there are some different looking fish in there they look like a cross bettween a large mouth bass and a bluegill :-\
There is also a big bear that hangs out around there.
Take care,W
I will post the Pond picture tomorrow and yes whilock the fish made it thru the fire but 1/4 of the Ponderosa's in the grove around the pond are toast. Since we have not had an eyeball yet, (my fault) the fish are all dead!
I tried to upload a 91Kbyte file of the pond but got the error that the upload box is full.
:(
Forgot to tell you, Dave - you need to load it to Photobucket first then copy the bottom IMG tag after your upload is successful and paste it into your message wherever you want the photo to appear. Hitting enter after you paste it in inserts a line and makes it easier to view especially with multiple pix. There is a tutorial in forum news also.
Thanks I'll try it when I get more time for things "things that don't work", for me.....
For now it is the last pix at my picasa
http://picasaweb.google.com/campososolar/MyPictures#
Oh - this one. I went to the pix, right clicked copy image location, pasted that location to Photobucket and uploaded it from the web page. Pasted the IMG link here - took about 15 seconds - Just a run through the steps to make it easier. :)
(https://i35.photobucket.com/albums/d184/glennkangiser/100_0212.jpg)
Thanks Glen! d*
I heard from one of my people that you have a new gate?
Hard to keep secrets here. My people will contact your people regarding the M.O. [waiting]
Oh -what the heck ...
(https://i35.photobucket.com/albums/d184/glennkangiser/P1000919.jpg)
Time to sum up the thread here for the year. [cool]
The pond project got bumped as our 14,000 gallons of rainwater lasted and the garden did not use as much as I thought.
The sanyo heat pump was a major improvement in our lives for cooling and I may use it today for heating as it may be a cool fall day. Most of the summer we just set it at low speed around 7am and it consumed about 350 watts. Some of the really hot days we would bump it up to 1KW after batteries were charged. I am doing an offgrid home now that will use a 26 SEER Fugitsu 240VAC. The sanyo is 120VAC 16 SEER. It will use the new Surrette 1,050 AH 2V L16's. They finally built what I have wanted for 20 years.
A tracked solar array was the key to my testing for cooling as you need that power right up until sunset. You might squeak by without a tracker if your heat gain late in the day is exceptionally low.
If any of the locals here in Mariposa need any fire firewood I have about 20 blue oaks that have been aging since the Telegraph fire. Glen, "my people" never contacted "your people" and I guess I just hope I will see the truck with you guy's in it soon.
We were wondering when you wanted to look at that, Dave.
I think we heard you cutting firewood yesterday? We were also cutting firewood yesterday as Whitlock was over and needed something to do. :)
We will plan to drop by in the near future.
That is interesting information on the AC. Please keep us informed on the new project.
Interesting new batteries. I had to look that one up. A 2 volt L16. I would then need 12 of them in series but no parallel charging problems I assume.
http://www.renewableenergyworld.com/rea/partner/rolls-battery-engineering/news/article/2009/06/surrette-battery-launches-2-new-l-16-models
Quote from: glenn kangiser on October 03, 2009, 11:15:56 AM
We were wondering when you wanted to look at that, Dave.
I think we heard you cutting firewood yesterday? We were also cutting firewood yesterday as Whitlock was over and needed something to do. :)
Interesting new batteries. I had to look that one up. A 2 volt L16. I would then need 12 of them in series but no parallel charging problems I assume.
http://www.renewableenergyworld.com/rea/partner/rolls-battery-engineering/news/article/2009/06/surrette-battery-launches-2-new-l-16-models
I suppose it is very important to keep someone with a name like Whitlock busy. I keep thinking I am seeing him in some of the usual meeting places in the greater environs of Mariposa. The funny part is I have never meet him and there are only so many of us up here that I start thinking I have......
One of exceptional reason for the new battery is as you say a perfect "electrial engineers design" without parrallel paths but the real kicker is you have half the number of cells to water and check of a double string bank with 250 more amp hours.
You hit the nail on the head with that keeping Whitlock busy. Such a mischief maker. :)
He lies pretty low around here and I had not met him in the first six years until his people contacted mine (after investigating me and deciding that possibly, I may be OK). [waiting]
I find that taking care of multiple battery fillings is quite a project. Sassy did it the other day so it was not much trouble for me. d*
Quote from: Dave Sparks on October 03, 2009, 09:06:53 AM... 26 SEER Fugitsu....
Wow!!! 26!!!
[cool] [cool] [cool]
Quote from: Dave Sparks on October 04, 2009, 11:15:22 AM
... a perfect "electrical engineers design" without parallel paths ....
Aaaaah!!! Dreams do come true!
Here is the link I promised Glen and good to meet Mat!
http://www.minisplitsystems.com/cgi/display.cgi?item_num=09KS71
Thanks, Dave.
For those who want to know, Dave is the guy to watch when it comes to solar and A/C stuff. :)