Our 2nd Earth Plaster workshop was a total success! This was actually our very first workshop on our own, meaning we took the plunge, and with the blessing of the Mud Girls, did this one on our own. Hats off to the Mud Girls for showing us how it’s done ~ we are forever grateful to you! Their workshops are HIGHLY recommended by the way (visit www.mudgirls.ca).
We had the pleasure of hosting 10 wonderful people from as far away as Egypt (ok, via Montreal), and from as close as Lillooet, who took time out of their busy lives to come help us plaster the interior walls (on lath), plus our cob masonry heater and cement block chimney, as well as apply natural paint on the outside of our home. The crew learned from scratch and mastered the art of earth plastering within days. Karim, Hanaa, Coral, Joni, Jose, Glenda, Nelson, Lauriel, Mark and Diane…we thank you again for your help, enthusiasm, sense of adventure and love of all things mud! The weather tried to challenge us, but nonetheless, we carried on and got tons done on the house. The food was divine and plentiful, once again, huge thanks to Stepha and Anna. Thanks to Devora, also once again, the kids were so well cared for and they had a blast! Thanks also to Roy and Travis for being the behind the scenes people. And to Camilche and Osha for coming in towards the end to lend a hand. Thanks everybody… mi casa es su casa.
Getting down and dirty
Mastering the second coat
Natural painting with yellow ochre
Even kids can do it!
Time out to play a tune or two
Jonathan demonstrating the art of mixing natural paint to an attentive crew
Plastering the cob masonry heater
Our little village
The Crew ~ dogs, kids and Pumpy Pumpy Spray Thing included!
Though it was only 4 days together, we all left the workshop feeling like family, or like it was the last day of camp ~ we lived and learned and ate and worked and sang and danced and talked and got down in the mud together, and got along extremely well to boot! The feedback during our closing circle was overwhelmingly positive. ‘Twas a beautiful and fun time for sure.
These photos can only convey a hint of the experience – but, like chocolate, one has to try it to really know what it’s like…there will be more workshops, keep your eyes peeled and let us know if you’d like to be on the list!
I’m taking a cut at a new solar water heating system that is an easier and quicker DIY project than our current $1K system.
While our current $1K solar water heating system has been popular and lots of people have built it with good success, it does require the building both the collectors and the solar storage tank yourself, and that takes a bit of time.
The aim of the new system is to make the job of doing your own solar water heating system quicker and easier by using all off the shelf components that just need to be mounted and hooked up together.
A prototype system is in the works using these components:
Collectors are 80 sq ft of plastic matt style pool heating collectors
The tank is the 175 gallon Softank
The controller is a standard differential controller from sun-pump
The pump is a Grundfos HVAC circulation pump
The prototype is very much a work in progress, and I’m looking for ideas and comments. Please look over the design and build, and if you have any thoughts on the system please leave comments on that page.
The system design is very much like the existing $1K system in that it is a drain back system that uses a large, non-pressurized tank for both the drain back tank and for heat storage. It also uses the one pass large coil of pipe heat exchanger to preheat cold water before it gets to your hot water heater.
Overview of the Components
The 80 sf of pool heating collector in place.
The collectors are lightweight and easy to handle and install. You can put 40 sf of collector under one arm and easily climb a ladder. The three season performance of these collectors is good in a solar water heating application, and there are some ideas on how to improve the not so good winter performance — maybe you have more ideas?
A nice side benefit of using these collectors is that they are SRCC OG100 certified, and therefore the whole system qualifies for the federal tax credit, and maybe state rebates depending on where you live.
The prototype collectors are Fafco SunGrabbers bought on ebay.
Solar Storage Tank: The tank is the Softank kit offered by American Solartechnics. The kit goes together easily and the tank holds about 180 gallons of solar heated water.
The Softank with 175 gallons of water. The top of the tank looks like a mess because I’ve not finished the lid and not trimmed things back and tucked things in. The controller and pump are visible at the left. The insulation bulges on the pipes are covering temperature logging sensors.
Controller: The controller is an off the shelf differential controller from sun-pump that has all the advanced features at a not so advanced price.
The controller — the wiring showing here is most of the wiring for the whole system.
Pump: The pump is a Grundfos 15-58 three speed HVAC circulation pump. These pumps are relatively efficient and very rugged with a reasonable price.
The Grundfos pump — this is the rest of the wiring.
Heat Exchanger: The heat exchanger is a large coil of PEX pipe that is immersed in the tank. Cold water from the street takes one pass through this coil to be preheated on its way to your hot water tank. It is the same one that is used in the $1K system and is explained in detail there.
Plumbing and Electrical: The system is plumbed together with easy to use CPVC pipe. This is the easiest system for people new to plumbing. You cut it with a scissors like device and the joints are just glued together. Goofs are easy to fix. There is a little bit of electrical wiring is that is easy and safe to do.
The target cost for the system is around $1300 before rebates. Depending on your rebate situation, payback may inside one year.
This is Norm’s very nicely done solar space and water heating system.
The system uses a large, unpressurized tank that serves as both the solar heat storage tank and the drain back tank for the collectors. The solar heat is used both to preheat domestic water and also for space heating, which is integrated with a propane fired boiler.
The solar storage tank with the copper coil heat exchangers.
Heat is extracted from the tank using one heat exchanger for space heating and a 2nd for domestic water heating. Both heat exchangers are made from two coils of copper pipe with parallel flow and are very nicely done. Norm provides good detail on making these heat exchangers.
The system uses four Sun Earth flat plate collectors.
The four 4 by 10 ft Sun Earth Collectors.
In Norm’s system the boiler is integrated with the solar system such that the boiler only provides heat when the solar collectors cannot.
Boiler is at upper left — solar components are mounted on the tank wall.
Heat distribution is to PEX runs in concrete and to the radiant floor done with Warm Board shown just below.
Warm Board hydronic radiant flooring distributes solar heat.
Energy Fairs provide a great way to learn about renewable energy and sustainable practices. They typically include workshops, seminars, demonstrations and exhibitors — everything you need to get started on that next project.
From the point of view of Do-It-Yourselfers, the MREA Energy Fair in Wisconsin is probably the best of the best. June 15-17, Custer, WI.
A list of the Energy Fairs I know about in the US is here:… Its hard to keep this list up to date and websites, dates, … change each year — so, if you find an Energy Fair on the list, but the link is broken, just Google for it. There are also MANY fairs that are not on the list, so check around and see what you can find in your area.
If you are putting on an Energy Fair, let me know the date and place and I’ll add it to the list — contact Gary…
www.thebackyardfarmer.net In this video update I show you little things that need to be done if you grow your vegetables and aquponics systems in a greenhouse. I also give an update on some of my other changes I have made in the last few weeks.