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So, we’re in the boonies mostly, the sticks, rural route address and all, and being so, we’re on a well. As anybody who knows us or reads my blog even only occasionally knows. So I was thinking, is there a better way to provide household water pressure, ensure adequate supply during peak load periods and somehow use the energy of the earth to assist in all of this, reducing our consumption of electricity?
Well… the answer is an age old invention. The water tower. They come in all shapes and sizes, tall, fat, bulbous, house shaped etc. They all work the same however. Water is pumped either continuously or during specific periods, like at night to replenish what is used. The water in the tank is higher then all the surrounding taps (usually) so the weight of the water (gravity) helps provide the tap pressure. Believe its something like 2.3 feet for every pound per square inch of pressure (PSI). In this way you get nice even pressure for household use, steady 40 – 60 PSI, and you will never out run the supply during peak periods – in theory – because the amount of stored water is enough to sustain the high usage for a period of time. During periods of low usage, water is replenished from wells which may not produce water as fast as if they were going straight from the well to the households.
So how is this any different from a pump and pressure tank system? Having a pressure tank system means that the pressure can increase and decrease during usage like during a shower. When it gets to its minimum pressure, the pump will come on the add more water to the system and therefore increase the pressure again. So its up and down all the time, and the pump is having to turn on and off to keep the water within the acceptable range.
The nice thing about the water tower is that the pump just acts like a bit toilet tank, when the water is low, it opens the valve to fill up the tank. Households using the water in the tank really don’t care or notice when or even if the pump is coming on as there is no pressure change.
So a water tower smooths out the experience from pumping out of the well to the delivery to the taps. It also potentially saves electricity and wear and tear. Why you say? Doesn’t it still need to pump the same amount of water? Well yes, but if a pump starts and stops all the time, that also means it has a start up load every time, which is often much higher then its average load. Also, turning on and off increases parts wear and tear. Ideally, pumps come on and pump for up to 2 minutes straight and then shut off for a while. With a water tower, it can be set to run steady for a good while to replenish the tank which minimizes starts and therefore starting loads and this saves money!
I’ve been thinking about the idea of having a water tower, building one that is . To make a long story short, the only drawback is in Canada, the requirement to heat the tank through cold winters. Otherwise having a water tower is almost a no brainer for domestic water demand and simplicity of a water system.
Building it, plumbing it and maintaining it aren’t a big deal, ensuring it and the pipes from the tank don’t freeze is another story. The pipe to the tank shouldn’t be a problem as the well water will be relatively warmer then any outside low temperature, believe it hovers around 15 degrees.. I should good that, its cold but much warmer than freezing anyways.
If I come up with a way or an idea, i’ll be sure to let you know 🙂
For 40 PSI of pressure, I would need a tank 92 feet in the air :/ Ok, I’ll have to rethink this because probably 30 or 40 would be a max height for anything I would make… Stay tuned for more thoughts…
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