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Posts Tagged ‘solid fuel’

Sometimes we feel as if we are going nowhere in our endeavours. The children are still very small, and the jobs of cooking, laundry and housework along with taking care of their needs seem to leave little room from anything else. It is important for us to remember at times like these that we are always moving, even when we feel stuck. When I catalogue what Alex has done with the cabin, I can see how much we have actually moved. He has put a 150 watt photovoltaic solar panel on the roof, and hooked it up to batteries and a small inverter for power. He and my brother moved a Stanley range with a back boiler into the cabin, just like the one we use in the house. It will provide heat and hot water in the winter. We moved in a couch which Alex’s Mum gave us five years ago, when we moved home from Oxford. Alex has put decking around the cabin, made from pallets and other “waste” wood. Most recently, he built a platform for a double bed, which gives us a sleeping area which saves on floor space. Still to go in are a sink unit and gas rings. It will really be an independent living space.

The cabin today, with its new roof, solar panels, battery-house (to the left) and deck.

The cabin today, with its new roof, solar panels, battery-house (to the left) and deck.

Cabin interior-Alex's home made sleeping loft, with the couch underneath, and power tools in the foreground!

Cabin interior: Alex's home-made sleeping loft, with the couch underneath, and power tools in the foreground!

I get a bit frustrated at times because my own work tends to be a repetition of the same things-cooking, laundry, fulfilling the requests of the children. Alex’s tasks, like electricity-free plumbing, hot-tub making and now fitting out the cabin, add up to visible creations, which one can look at and admire. It makes more interesting viewing and conversation than preparing healthy meals, giving another comforting hug after a fall or picking up all the toys yet again. We certainly do not have a system whereby I do all the housework or clean up after Alex, and yet, because he is the one with the building, electrical and plumbing skills, our roles have fallen along somewhat more “traditional” gender lines since we moved here than when we were first together. This can be challenging for me, and I can feel reactive and angry at the “invisibility” of much of my work. It is important for me to remember and honour the importance of the work I am doing, which has to be done all over the world, over and over again. One of my goals is to learn a bit more about carpentry and building, so that I don’t feel so impotent in these areas, and have the opportunity for joy in practical creation which Alex gets. It is also important for my health and well-being that I take myself away from the housework sometimes. This work will never be fully done, and much as I like cleanliness, good food and order, they don’t stick around for long in house where two little children live, play, draw and explore. All my life, I have wanted to be carried away by books, to escape from people and outdoor work. However, I feel so much better for getting my hands in the soil, whether weeding, planting, digging or making and distributing stonk water (as my family call the very smelly nettle and comfrey water which we use to feed the plants).

Stonk water (you're lucky you can't smell this picture)

Stonk water (you're lucky you can't smell this picture)

My tendency is to be overly-cerebral, and to do much of my “living” in my head. A rich inner life is of course a potentially awesome part of being human. Self-awareness and mindfulness are definite priorities of mine. With my personality type, however, it is an important challenge for me to give myself to the present moment. The children and the garden are great teachers of dealing with the here and now, the practical and physical. Sometimes I can fret and worry endlessly about life in my head, while actual life itself is passing me by. The intellect is a powerful tool for working on the mystery of life, and yet for compulsive thinkers like me, doing can often be the more freeing solution. As a dear friend of mine reminds me, any activity can be a meditation. Now I’m going to go out and put some of that lovely smelly water on my plants.

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Plumbing wrecks my head, but when it works as designed I find it very satisfying. It is especially satisfying when plumbers and hardware merchants say “You can’t do that. For God’s sake don’t try, it’ll probably blow up in your face!”

Like amateur electrical (which I am not in a position to try writing about yet), plumbing does sometimes seem a bit beyond the scope of a DIY enthusiast. There’s the different diameter pipes, airlocks and direction of flow to consider. There is also the threat of great pressure building up if you have a boiler and the worry of how to safely contain that or provide for a safe automatic release.

I took on the challenge of hooking our solid fuel Stanley Range up to a hot cylinder and three radiators in our mobile home and to do this without the use of an electrical circulating pump.

My idea was to use natural convection and gravity for the circulation of the hot water which involves having the hot water pipes leaving the stove always rising slightly and the cold returning pipes a smaller diameter than the hot ones.

The principle of this kind of system is that the hot water will always want to rise to the highest point and if it is freely able to do this then there should be a natural convection circulation occurring. The desired direction of flow can be encouraged if one uses larger diameter pipes for the hot water as this will decrease resistance in these pipes. Some people also install a one-way valve of the swing-flap design to rule out any back flow.

 

 

I was convinced that this system would work fine without a pump to push the water along. However, I was a little concerned about what to do with the pressure that would build in the expanding hot water inside the pipes.

I decided to install a safety release valve which automatically opens to let off water if the pressure builds to a dangerous level. I also installed an electrical circulating pump in an extra loop of pipe that I could turn on and direct water through if necessary (see Diagram 2).

 

In a house with a roof space it is usual to have a small header tank of water that feeds the heating system. Pressure levels are not usually a concern to most people as a pipe runs off the system and up to a point above this header tank. If the pressure builds, the water just goes up this pipe and is fed directly back into the header tank.

 

This wasn’t possible for us as we had no roof space and the tank feeding the system is our water tower, about 20ft high and 20 metres away.

Anyway, after a year of use I found that I never once needed to turn on the pump. All the radiators and hot cylinder started heating up shortly after the stove was lit. I took the circulating pump out of the system and put it to use in another project (homebuilt solar hot water panels) and the system has been running perfectly for three years now.

The only time that pressure was a problem was when our water froze for several days, cutting off the feed to the system. An air lock must have occurred, we figured.

What happened in that case is that one of the pipes came free from a connection before the safety release could operate. Luckily, there was no-one in the vicinity of the pipe at the time. Now we are vigilant whenever there are extended periods of frost, but the same problem has not occurred again.

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