Re: [RE-wrenches] Energy Storage Equipped Appliances
Hi Since battery reliance brings it's own set of challenges there have been some products that have used built in storage that is battery free. Fridges can be found that use ice in the walls and/or top to store cool. So no battery needed. Mostly used for DC clinics where vaccines are stored but Sundanzer may have some that are more domestic oriented. Another energy storage "appliance" are pumps that can use stored water as a way around the battery. Steve McCarney,President - Sunny Day LLC On Wed, Sep 27, 2023 at 12:20 AM Philip Boutelle via RE-wrenches < re-wrenches@lists.re-wrenches.org> wrote: > Haven't seen this discussed on the list yet: startups are making > appliances with integrated batteries,"Energy Storage Equipped" appliances. > Good > podcast interview > <https://www.volts.wtf/p/induction-stoves-with-batteries-built#details> > with someone from DOE on how these are being funded and developed > > This induction range <https://www.channingcopper.com/> is a 120V/15A plug > and play replacement for a gas range, without needing to run a 240V > circuit. The 4 kWh battery handles the intermittent peak load, and slowly > recharges at 120V. Battery provides backup power during outages, and you > can plug a refrigerator in too. > > I haven't seen any heat pump water heater ESEs yet, but there is a > 15A/120V Rheem plug-in HPWH <https://www.rheem.com/heatpumpwaterheaters/> > . > > Neither one is a good fit for off-grid, more for people trying to > electrify but want to avoid rewiring the whole house. > > > -- > > *Phil Boutelle,* *PE, CEM, NABCEP Emeritus* | Energy Engineer > philboute...@gmail.com | M (831) 359-5268 > > On Tue, Sep 26, 2023 at 2:36 PM David Palumbo via RE-wrenches < > re-wrenches@lists.re-wrenches.org> wrote: > >> I have old off-grid friends looking for advice on replacing an old LP Gas >> range. Here is their email they sent me. Wrench advice will be appreciated! >> >>- Dave Palumbo >> >> >> >> << We are ready to replace our cook stove, it is a Premier & we love it >> but have had problems finding parts for it & people to work on it. >> >> >> >> The only major appliance co who makes a cordless/non-convection oven >> range is Hotpoint, which is pretty basic but could work. >> >> >> https://products.geappliances.com/appliance/hotpoint-specs/RGBS200DMWW#tab2_ >> >> >> >> The other one we are looking at is a Unique Appliances brand propane >> stove - for off-grid use - their “classic retro” model doesn’t have great >> reviews but the basic model sounds good. >> >> >> >> Off-Grid Classic 30” Propane Range (Battery Ignition) >> <https://uniqueappliances.com/product/off-grid-classic-30-propane-range/> >> >> uniqueappliances.com >> <https://uniqueappliances.com/product/off-grid-classic-30-propane-range/> >> >> >> >> I’m wondering if you are familiar with the Unique Appliances brand & if >> you’d recommend them? >> >> >> >> We also considered the Premier “Pro Series” ranges but they are spendy & >> I’m afraid we’ll run into the same trouble finding parts & someone who will >> work on them, which could also be an issue for Unique. >> >> >> >> Any thoughts or suggestions on the topic? >> >> >> >> >> >> >> >> >> >> ___ >> List sponsored by Redwood Alliance >> >> Pay optional member dues here: http://re-wrenches.org >> >> List Address: RE-wrenches@lists.re-wrenches.org >> >> Change listserver email address & settings: >> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org >> >> There are two list archives for searching. When one doesn't work, try the >> other: >> https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/ >> http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org >> >> List rules & etiquette: >> http://www.re-wrenches.org/etiquette.htm >> >> Check out or update participant bios: >> http://www.members.re-wrenches.org >> >> ___ > List sponsored by Redwood Alliance > > Pay optional member dues here: http://re-wrenches.org > > List Address: RE-wrenches@lists.re-wrenches.org > > Change listserver email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > There are two list archives for searching. When one doesn't work, try the > ot
Re: [RE-wrenches] Record Low
Hi For USA and global weatherbase.com will have record hi and lo temps as well as a lot of other helpful climate info given monthly and annual. No solar radiation tho. steve mccarney - sunny day llc On Tue, Aug 22, 2023 at 11:54 AM Daniel Young via RE-wrenches < re-wrenches@lists.re-wrenches.org> wrote: > I still use the SolarABC’s reference map, pulls the ASHRAE data. Good for > the US only. > > > > https://energyresearch.ucf.edu/solar-certification/solar-reference-map/ > > > > Not record lows, but I have used this for years as the design low > temperature for string sizing. > > > > They claim the data is outdated, but with climate change I feel safe that > the Extreme minimum temperature is likely to only go up > > -- > > > > Danny Young > > NABCEP PV Installation Professional #031508-90 > > VP of Engineering > Solar Energy Solutions > > Lexington | Louisville | Bloomington | Cincinnati | Evansville | > Indianapolis > > 513-448-5176 (mobile) > > 877-312-7456 (Main Office) > > da...@sesre.com > > > > *From:* RE-wrenches *On > Behalf Of *Christopher Warfel via RE-wrenches > *Sent:* Tuesday, August 22, 2023 1:47 PM > *To:* re-wrenches@lists.re-wrenches.org > *Cc:* Christopher Warfel > *Subject:* Re: [RE-wrenches] Record Low > > > > *Caution:* This email originated from outside SES. Do not click links or > open attachments unless you recognize the sender and know the content is > safe. > > > > Hi Drake, here you go > > > > ASHRAE climatic design conditions 2009/2013/2017/2021 (ashrae-meteo.info) > <http://ashrae-meteo.info/v2.0/> > > > > Chris > > On 8/22/2023 1:28 PM, Drake Chamberlin via RE-wrenches wrote: > > Hello Wrenches, > > > > Is there a good source for finding record low temperatures in various > areas? We are designing a project that has very different temperature > characteristics than we are used to. > > > > Ashrae.org was recommended as a source. Does anyone know where on the site > to look? > > > > Thank you, > > > > Drake > > > > *Drake Chamberlin* > > *Athens Electric LLC* > > *Ohio Electrical Contractor’s License 44810* > > *CO Master Electrician’s License 4526* > > *NABCEP Certified PV Installation Professional* > > > > -- > > > > > > ___ > > List sponsored by Redwood Alliance > > > > Pay optional member dues here: http://re-wrenches.org > > > > List Address: RE-wrenches@lists.re-wrenches.org > > > > Change listserver email address & settings: > > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > > > There are two list archives for searching. When one doesn't work, try the > other: > > https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/ > > http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org > > > > List rules & etiquette: > > http://www.re-wrenches.org/etiquette.htm > > > > Check out or update participant bios: > > http://www.members.re-wrenches.org > > > > -- > > Christopher Warfel > ENTECH Engineering, Inc. > PO Box 871, Block Island, RI 02807 > 401-466-8978 > <http://entech-engineering.com/> > > ___ > List sponsored by Redwood Alliance > > Pay optional member dues here: http://re-wrenches.org > > List Address: RE-wrenches@lists.re-wrenches.org > > Change listserver email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > There are two list archives for searching. When one doesn't work, try the > other: > https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/ > http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org > > List rules & etiquette: > http://www.re-wrenches.org/etiquette.htm > > Check out or update participant bios: > http://www.members.re-wrenches.org > > ___ List sponsored by Redwood Alliance Pay optional member dues here: http://re-wrenches.org List Address: RE-wrenches@lists.re-wrenches.org Change listserver email address & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org There are two list archives for searching. When one doesn't work, try the other: https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/ http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules & etiquette: http://www.re-wrenches.org/etiquette.htm Check out or update participant bios: http://www.members.re-wrenches.org
Re: [RE-wrenches] Vaccine refrigeration
hi I agree that SunDanzer battery, free solar direct drive (SDD) fridges have revoluntionized the solar vaccine fridge market. Two of their fridges are WHO preqaulaified thrugh extensive testing that approvees a product for sale through the UN. If you need a freezer too then SunDaner has also pioneered SDD freezers for immunization ice pack freezing. If the health facility also needs some power for lights, fan and small battery recharging (e.g.cell phone, laptop, fetal doppler) then check out the B Medical Systes Health Center Kit that is approved by WHO to be coupled to a B Medical SDD vaccine frdge (or SDD fridge freeer combination). WHO calls that category of products "Energy Harvesting" and the control system always priorities the vaccine fridge power first and then harvests the excess for user selected loads, about 500 Wh/day are presently availalbe and more in the future is the hope. If the energy harvest control fails it does take down the fridge. Steve McCarney Directorr Cold Chain Solutions Solar Elecrtric Light Fund On Wed, Nov 14, 2018 at 4:47 PM Robert Foster wrote: > Hi Jay, > > > Check out the WHO approved SunDanzer direct drive vaccine efrigerator. No > batteries with a 2°C phase change material freezing point so you never can > freeze the vaccine. The thermal storage PCM in the walls is good for about > a week of cold under hot ambient conditions. I had an early direct > drive prototype I let run for 10 years at NMSU with no issues before I > returned the unit to the manufacturer. This approach revolutionized solar > vaccine refrigeration. > > > See > > > sundanzer.com > > > under medical > > > Good luck, > > > Robert Foster > > > Message: 1 > Date: Tue, 13 Nov 2018 13:18:28 -0800 > From: Jay > To: RE-wrenches > Subject: Re: [RE-wrenches] Vaccine refrigeration > Message-ID: <5ee43883-7b86-4009-b00f-8611d4869...@gmail.com> > Content-Type: text/plain; charset="utf-8" > > Hi Jerry > > Vaccine refrigeration > > Jay > > > On Nov 13, 2018, at 12:47 PM, Jerry Shafer > wrote: > > > > Jay > > I have done ACDC refrigeration, how big of a unit are you looking for, > apartment size or container size. Bigger is almost easier, need info > before. > > Jerry > > > >> On Tue, Nov 13, 2018, 10:22 AM Maverick Brown < > maver...@mavericksolar.com wrote: > >> I recommend the Engel AC/DC frig/freezer. Like the MR040F or similar > size. I?ve had one running for 6-8 years. No issues. > >> > >> > https://www.engelcoolers.com/shop/12-volt-fridge-freezers/mr040f-u1.html?gclid=EAIaIQobChMIrZe-2pjS3gIVDdvACh0aWQSWEAYYAiABEgIB6PD_BwE > >> > >> Thank you, > >> > >> Maverick > >> > >> > >>> On Nov 13, 2018, at 1:26 PM, Jay wrote: > >>> > >>> Hi all > >>> > >>> I?m looking for recommendations on vaccine refrigeration. > >>> It?s for buddy in west pacific which was just pounded by strongest > typhoon ever. > >>> > >>> Thx > >>> Jay > >>> Peltz Power. > >> > >> > > Check out or update participant bios: > www.members.re-wrenches.org > > > -- > > End of RE-wrenches Digest, Vol 11, Issue 362 > > ___ > List sponsored by Redwood Alliance > > List Address: RE-wrenches@lists.re-wrenches.org > > Change listserver email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: > http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out or update participant bios: > www.members.re-wrenches.org > > ___ List sponsored by Redwood Alliance List Address: RE-wrenches@lists.re-wrenches.org Change listserver email address & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out or update participant bios: www.members.re-wrenches.org
Re: [RE-wrenches] Off Grid Refrigeration
Hi Drake Probably the biggest development in off grid solar refrigeration is the growing use of battery free solar direct drive (SDD) fridges and freezers. These are now in widespread use by the global immunization community for vaccine refrigeration and some ice pack freezing. It is believed there are over 10,000 already deployed with many more planned in the next few years. There are 7 manufacturers around the globe that have earned WHO "pre-qualification" after passing stringent testing focused on conserving vaccine. Some also offer SDD for other uses. To see who they are go the WHO website and see their catalog with approved fridges and freezers at http://apps.who.int/immunization_standards/vaccine_quality/pqs_catalogue/ Best wishes Steve McCarney, Director of Cold Chain Solutions, Solar Electric Light Fund On Tue, Jun 27, 2017 at 9:25 AM, Drake <drake.chamber...@redwoodalliance.org > wrote: > Hello Wrenches, > > What is your preferred refrigerator for off grid installations? We are > looking for a medium sized, commercially available unit that won't break > the bank. Any suggestions would be appreciated. > > Thank you, > > Drake > > > Drake Chamberlin > > > > > > *Athens Electric LLC OH License 44810 CO License 3773 NABCEP Certified > Solar PV 740-448-7328 <(740)%20448-7328> *http://athens-electric.com/ > > > > > <https://www.avast.com/sig-email?utm_medium=email_source=link_campaign=sig-email_content=emailclient_term=icon> > Virus-free. > www.avast.com > <https://www.avast.com/sig-email?utm_medium=email_source=link_campaign=sig-email_content=emailclient_term=link> > <#m_3467907044947617191_DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2> > > ___ > List sponsored by Redwood Alliance > > List Address: RE-wrenches@lists.re-wrenches.org > > Change listserver email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: http://www.mail-archive.com/re-wrenches@lists.re-wrenches. > org/maillist.html > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out or update participant bios: > www.members.re-wrenches.org > > > ___ List sponsored by Redwood Alliance List Address: RE-wrenches@lists.re-wrenches.org Change listserver email address & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out or update participant bios: www.members.re-wrenches.org
Re: [RE-wrenches] Warranty replacements
Warranty-related service calls and related issues are compounded for off grid sites where travel time is usually longer than the time it takes to do the service. The burden is unequally shared since some problems are due to faulty equipment, user/site circumstances and installer responsibility. We install solar powered vaccine fridges in Africa and the Americas and have recently wrestled with this globally and are discussing a way to assign the responsibility so the installer is not unfairly saddled with the lions share of the costs. It seems fair that the cost of service should be borne by the responsible party - if determined to be an equipment failure within warranty period shouldn't the manufacturer be liable for cost of service? But if the user (or the site conditions that are out the control of manufacturer and installer) are the cause then the owner should pay but if the installer caused it then they should be liable. These same concerns come up when system acceptance (and final payment) is tied to some sort of system performance metric that might again be impacted by equipment, user/site conditions or the installer. We are trying to point all this out to buyers ahead of time to get their agreement to be responsible in cases user/site circumstances lead to a service call/warranty call. However moving the manufacturers toward a more equitable stake in post install expenses is difficult, especially if you are not a high volume buyer. And then there is the question of who determines the cause of a problem since it will not always be clear. Steve McCarney Project Manager Solar Electric Light Fund. On Thu, Oct 16, 2014 at 6:06 AM, Jason Szumlanski ja...@szumlanski.com wrote: Frankly, our issue is the UNsteady stream of service issues with both string and microinverters. There isn't enough warranty or non-warranty service work and it is too unpredictable to justify a dedicated PV service department with dedicated personnel that can run economically. As a result, we have to pull install crews from active installations to handle these issues, which is neither economical nor good for our installation business. As much as PV service is an annoyance for system owners, it's a huge distraction for a small dealer. In fact, one competitor refuses to service the systems they install. We have been picking up service business as a result (we have a reputation for doing so and manufacturers call us), but it's still not steady enough to handle well. Jason Szumlanski On Oct 15, 2014 4:41 PM, Rebecca Lundberg rebecca.lundb...@powerfullygreen.com wrote: We are starting to see a fairly steady stream of various solar electronics needing replacement under warranty, including micro-inverters, AC modules (microinverter failing), and even modules with an integrated DC electronic component failing to work from the get go. I work with residential customers and care about doing right by them, and of course they expect that their warrantied part will be replaced at no cost to them, they have already invested a lot in their solar project. Sometimes the manufacturer has a stipend which at least offsets the cost of gas but does not cover time to travel to the site and do the replacement, but I have recently come across several manufacturers who do not give any stipend at all and I am surprised at that. Replacing a module in the middle of a pitched roof is no small feat, and getting to micro inverters on a steep pitch is always a challenge. As the code requires more safety features down to the module level, I suspect we will see more and more of this, and the electronics are no longer at ground level and easily accessible. What ideas do you have about how to deal with this? Must we have an O and M contract with every customer given current product choices? A similar question relates to a particular module having issues with delamination and failed diodes. We have been called out to several sites where this has caused the inverter to sense a fault, and testing showed the module leaking voltage to ground. Who is responsible for getting the inverter up and running when it clearly stems from the module? I suspect the module manufacturer's warranty legally exempts them from responsibility, but again it is reasonable for the customer to expect a warrantied system to be up and running. Thoughts from the field? Sincerely, Rebecca Lundberg -- Rebecca Lundberg NABCEP Certified Solar PV Installer ® Owner/President *Powerfully Green*® 763.438.1976 | rebecca.lundb...@powerfullygreen.com Powered by the Sun! ___ List sponsored by Redwood Alliance List Address: RE-wrenches@lists.re-wrenches.org Change listserver email address settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html List rules etiquette
Re: [RE-wrenches] Fix the Fluorescents: What about LED tubes for late 2012?
Hi In Tunisia there is a net zero energy retrofit project in 4 health facilities. The exisitng lights were mostly ceiling mounted 34 W Flourescent tubes and 20 W tubes. We replaced them with 20 W and 10 W LED tubes. The LED tubes are more like task lighting that directs the light onlyt downward, compared to the fl tubes that light evenly around the tube. So with the light directed downward to the task area it was an acceptable replacement and cut lighting energy consumption roughly in half. The only complaint I heard (through the grapevine) was about the one tube that was wall mounted - they said it bothered the eyes because it was at eye level and they said it was too bright (the 20 watt LED tube). I have not heard of any LED tube failures on this project (in 1.5 years). The same fixture that holds fl tubes can be reused with the same size LED tube as long as the ballast is bypassed. Steve McCarney, Project Manager Solar Electric Light Fund On Wed, Dec 5, 2012 at 8:51 PM, Chris Mason cometenergysyst...@gmail.comwrote: I don't know anything about RV systems but as to LED lighting in general, we recently sold and installed 130 LED fixtures in a large villa to replace MR16 lamps, saving the client over 6KW of load. The light output is better than the MR16, there is no heat, and they were very cost effective replacements (the MR16 rusted). I think CFL's days are numbered. ___ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Options settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org ___ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Options settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org
[RE-wrenches] posting request
Dear Wrenches Can anyone recommend a software package that is good for solar electric project management? We would like to be able to have the capability to coordinate scheduling, procurement, budgeting, expense tracking as well as noting communications about a given project. If an integrated package doing all these things doesn’t exist we’re especially interested in just good stand-alone procurement software that takes projects from BOM, to request for bids, to POs and invoices. Thanks. Steve McCarney, Project Manager Solar Electric Light Fund ___ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Options settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org
[RE-wrenches] post request
Hi Micheal Can you justify this post please? Dear Wrenches We are looking for someone to occasionally contract to draft wiring schematics for PV power systems of all types including battery based hybrids. If interested please send me (off-line) a note with your capabilities, software familiarity, a sample and your rate. Thanks. Steve McCarney Project Manager Solar Electric Light Fund e mail st...@self.org st...@self.orf ___ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Options settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org
Re: [RE-wrenches] Solar/Small Wind in Columbia
Hi Ryan There are some very experienced solar professionals in Colombia that also do wind and hydro (assessments, designs, installations and service). You can get assistance from them that is up to date and knowledgeable about local conditions. Several work the entire country and I can make few introductions if you contact me off line at st...@self.org Steve McCarney, Project Manager Solar Electric Light Fund On Wed, Aug 8, 2012 at 9:54 AM, Ryan Harkins ryan.hark...@energycraft.comwrote: Wrenches, Have any of you installed in Columbia? I've been talking with some friends outside of Bogota, Columbia about solar and wind, and now I am curious. If any of you have experience with renewables there it would be great to hear from you. Topics - On and off grid systems, Interconnection, permitting, exporting, code, electric rates, licensing, wind maps, etc. Thanks, *Ryan Harkins NABCEP Certified Solar PV Installer / Project Manager* Synergy Renewable Systems, LLC PO Box 58 Stoughton, WI 53589 PH: 608-712-7862 ryan.hark...@energycraft.com www.energycraft.com ___ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Options settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org ___ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Options settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org
Re: [RE-wrenches] Array direct farm machinery?
Could the site use any refrigeration? There is a family of fridges called ice lined and these store energy in the form of ice, avoiding the need for a battery. Some are made for solar direct drive operation, but at lower voltages (12-24 vdc nominal). They have reasonably long autonomy times at constant hot temperatures (tested at either + 32C or +43C). Most will offer 5+ days of autonomy in those hot conditions. Try Sundanzer (USA), True Energy (UK), Dometic (Luxemburg), Haier (China) and Vestfrost (Denmark). All of these companies have these and all are prequalified for vaccine storage by the WHO, however the companies would let you know if they offer similar products to fit your needs. Sundanzer also could supply a small freezer. Steve McCarney, Project manager Solar Electric Light Fund On Thu, Jul 19, 2012 at 5:20 PM, Eric Youngren ericyoung...@gmail.comwrote: Howdy Wrenches, We are thinking up new ideas for powering agriculture in the rural developing world to propose for the new USAID Energy Grand Challenge for Development http://www.poweringag.org One idea is to build PV array direct water pumping systems for irrigation that could be converted to power productive use farm machinery for grain milling, oil pressing or other farm processing jobs after the harvest is in. The idea being that after the harvest they don't need the irrigation pumping for a bit and the PV array could be switched over to drive a motor to accomplish a mechanical task. For that matter if it was an easy swap (Anderson 2 pole connectors, dual battery boat switches, etc) between the pumping load and the machinery load the same PV array could be used on any given day to either run the pump or the machine(s). I'd like to avoid batteries altogether and I'd like to allow a single 1 to 3 kW PV array to accomplish multiple array direct mechanical tasks. This is just a brainstorm at this point, maybe this is a crazy idea and not worth pursuing, but I'd be really curious if anybody has any experience doing anything like this or any other ideas to bring to the table. Any ideas? Thanks! Eric Youngren Solar Nexus International www.solarnexusinternational.com ___ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Options settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org ___ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Options settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org
Re: [RE-wrenches] Need info resource re wind hail damage
Hi Allen For what it is worth I had a house in Puerto Rico with two modules on the roof. Hurricane Marilyn blew the roof off of the house but the panels stayed on for the ride. The roof landed upside down pinning the modules under the debris. These the UniSolar UPM880 (non glass) and they survived with minor cosmetic damage and still measured full output after they were salvaged. In Florida we were hit hard again by Hurricane Charlie, with 145 mph winds reported nearby our home. This time the roof stayed on and again so did the pv panels. We were the only place with power that first night since all the grid was blown down. So, modules can survive some of the big winds if fixed well enough and if you lucky. I have been lucky since none of our family or friends were (physically) hurt in these storms. Steve McCarney Solar Electric Light Fund On Thu, Mar 8, 2012 at 11:13 PM, Allan Sindelar al...@positiveenergysolar.com wrote: ** Fellow Wrenches, We have an engineer-type whose wife wants badly to do a PV system, but he puts up barriers. In her words: Well, I don't know how long ago it was, surely old technology by now, but some experimental solar panels at Sandia Labs were shattered by hail and it caused a big controversy. My husband says it turned him off solar.It comes up every time I talk to him. Either he is complaining about the wind or the hail or whatever. I get to respond to this, and am seeking specific assistance: Can anyone send me a link to any formal standards, or reports of aggregated field experiences, indicating that wind and hail (not to leave out whatever) are not issues of concern when PV modules are installed correctly? Anything that came from Sandia Labs would be ideal, but it just has to be reputable enough to satisfy a grouchy retired national lab engineer. Web links, reports, product warranties, etc. - all good. Thank you in advance. Allan -- *Allan Sindelar* *al...@positiveenergysolar.com* al...@positiveenergysolar.com NABCEP Certified Photovoltaic Installer NABCEP Certified Technical Sales Professional New Mexico EE98J Journeyman Electrician *Positive Energy, Inc.* 3201 Calle Marie Santa Fe, New Mexico 87507 *505 424-1112* *www.positiveenergysolar.com* http://www.positiveenergysolar.com/ * * ___ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Options settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org ___ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Options settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org
