h a l f b a k e r yLike a magnifying lens, only with rocks.
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Today I was cleaning dishes, thinking about heating and
an
idea suddenly came into my mind: I have an electric
water
heater, its in a block of flats, electric heating is one of
the
most expensive in our country, but what if I build a solar
water heater on wheels? I could get myself a pickup
truck,
mount solar heater on it, it would be connected to 0.5-1
cu.m. tank full of water. In the day I place the vehicle in
an open space not far away from my house (so I dont
have
to pay a lot for gas:D ) and it would heat the water in
the
tank. In the evening, I would drive the truck to my home,
connect pipes to water circuit and either refill an empty
tank at home or exchange via pump the hot water in the
tank with cool water in the electric heater in the flat.
The
trucks tank of course should be well insulated to
minimize
the heat loss. What do you think?
Wait for rain!
https://www.youtube...watch?v=TxQRCZlBmgg
The man who didn't wash his dishes. [popbottle, Apr 12 2017]
[link]
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Kids will throw rocks at it. |
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It has the advantage that you can vary its placement over the
year, to take advantage of the sunniest parts of your yard. |
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Can the pickup be modified to dump some of the waste heat
from the engine into the water too? |
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a. There exist black plastic solar collectors that are used to heat swimming pool water. They have no glass to break. Some plastic mirrors are also hard to break. |
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b. If the water coming into a water heater is very cold (say from a well ) a second tank before the water heater can allow water to reach room temperature before entering water heater. |
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c. There must be quick connect fittings of some sort available. Even screwing on a garden hose will get tedious. |
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d. If you have gas range, perhaps heat your dishwater on the stove. Add a tap and hose to a large kettle, maybe. |
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e. Install gas water heater |
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f. Eat out often or paper plates. |
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Well, the problem of kids can get fixed in many ways, I dont
find it a concern. As to popbottles comment, preheat is a
very good idea, but having room temperature water in your
system you have a risk of legioneliosis. As to my house of
flats, we have no gas and the requirements for gas boilers
are strict enought to make me contemplate of mobile solar
heaters. And paper plates, well, are out of the question:) |
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which is more gas(1) or gas(2)? If gas(1) is cheaper then you could actually have the exhaust pass through a coil immersed in the water, along with the solar, to heat it more cheaply than gas(2). However if gas(2) is cheaper then the mileage concerns from transporting a bunch of solar warmable water in a giant thermos might be more than using gas(2). (gas1 = gasoline, gas2 = CH4) |
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