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Pex tubing will fail in a very short time. I have seen several attempts to use Pex tubing for the hot supply line and the failures were always within the first year. It is possible to use Pex tubing for the return line back to the collectors, but it is important to terminate the Pex at least 10 feet from the collectors. The Pex must never be used for an outside pipe run unless it is buried. I suggest that you only consider Pex for use in the solar loop when burying the return line out to a ground-mounted array.

All they had to do was to build inexpensive oil tankers to ship foreign oil to the US. This is not the case for natural gas. It takes very sophisticated and expensive ships to import natural gas from foreign sources. Also, expensive and sophisticated terminals must be built at both the shipping and receiving ports. This infrastructure is not in place and it will take many years and a substantial investment to create it. This will significantly affect the price of natural gas in the future. The bottom line is that the cost of natural gas will also continue to rise, with no end in sight.

Note that you have to plan ahead and locate the wells in the proper place as the circuit is being plumbed. Well thermometers are accurate and relatively inexpensive. 11 Pressure gauge that are fixed to the pipe where you want to monitor the temperature. A well is not required, so no prep work needs to be done. An advantage of electronic thermometers is that you can often locate the temperature display some distance from the site of the sensor. People often locate the display in an area that they frequent, so it is easy to see what is going on without having to be present at the site of the sensor.

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