Sweating and Planning

Today sweating and making final decisions on how to setup a method to fill and drain the circulation loop. Making plans on ways to check all joints for leaks by closing valves etc. I have been reading about fill and flushing methods using the inline circulation pump or using a outside sump pump and 5 gallon bucket until the air bubbles are gone. Included in the plans and constant minor changes are disconnects, locations and routing of the tubes, factoring in the, later to be added, insulation.
Lots of sweating (soldering) measuring, cutting and just fabricating.
Dr. Georg Pingen Sweating: Georg Pingen  Union University Engineering Department sweating pipe on the thermal solar projectDr. Georg Pingen Sweating: Georg Pingen Union University Engineering Department sweating pipe on the thermal solar projectThreads on the solar heater: This closeup of the header fitting threads shows it is not a 14 thread tapered 'pipe' thread but a 'straight' 14 threads per inchThreads on the solar heater: This closeup of the header fitting threads shows it is not a 14 thread tapered 'pipe' thread but a 'straight' 14 threads per inchThreads on the Solar Tank: This closeup view of hot water tank heat exchanger fitting shows a .75"  fitting that is not tapered pipe thread. A pipe thread fThreads on the Solar Tank: This closeup view of hot water tank heat exchanger fitting shows a .75" fitting that is not tapered pipe thread. A pipe thread fTRU-BLUE: Tru-Blue pipe thread sealant by Rectorseal with PTFE.  We found it to be much better than teflon tape because the fittings don'tTRU-BLUE: Tru-Blue pipe thread sealant by Rectorseal with PTFE. We found it to be much better than teflon tape because the fittings don'tHeater .75" pipe fitting added: Adding Tru-Blue to the .75" fitting of the heater adaptor.  We added adaptor so standard cooper fittings would work.Heater .75" pipe fitting added: Adding Tru-Blue to the .75" fitting of the heater adaptor. We added adaptor so standard cooper fittings would work.Adding flux to copper: Fitting and pipe with flux on them ready to sweat togetherAdding flux to copper: Fitting and pipe with flux on them ready to sweat together

Plans for this solar energy include
1. heating the water
2. auxiliary air space heat fro the office
3. summer refrigeration, cooling the office

Solar 3 way valve and Air Purge: On the left is the air bleed or purge valve sweated into its pipes that will eventually be mounted on the inlet of the collector. On the right is one of the 3 way valve assemblies used to control flow to the space heater.Solar 3 way valve and Air Purge: On the left is the air bleed or purge valve sweated into its pipes that will eventually be mounted on the inlet of the collector. On the right is one of the 3 way valve assemblies used to control flow to the space heater.Solar 3 way setup: Setup plans for a 3 way valve assembly for solar loop medium filling and purgingSolar 3 way setup: Setup plans for a 3 way valve assembly for solar loop medium filling and purgingSolar 3 way valve in place: Here is where the 3 way valve will be installedSolar 3 way valve in place: Here is where the 3 way valve will be installed
Solar space heater 3 way valves: This closeup view of the space heater 3-way valve assembly. Here the space heater can be added later in series or bypassSolar space heater 3 way valves: This closeup view of the space heater 3-way valve assembly. Here the space heater can be added later in series or bypassSolar 3 way valves for Drain and Fill: Closeup of the Drain and Fill 3 way valve assemblySolar 3 way valves for Drain and Fill: Closeup of the Drain and Fill 3 way valve assembly


So we added a 3 way valve setup in the incoming hot side between the solar collector and the hot water tank. These valves can be turned with the center one open and the end ones closed to simply run the hot liquid straight through to the the tank. The other way is to have the center valve closed and the other two open so the hot liquid has to flow through a heat exchanger where a blower can remove some of that heat and send it to the office space. This heat exchanger can be placed in series of the already install central system in the office or with its own fan, duck work and controller.

Tank in place: Location chosen and potable lines installedTank in place: Location chosen and potable lines installedTank and Work Station: Work Station installed beside the Solar Hot Water TankTank and Work Station: Work Station installed beside the Solar Hot Water TankSolar Parts Location: Thermal Solar Parts are being located. The work station, tank, and now Expansion TankSolar Parts Location: Thermal Solar Parts are being located. The work station, tank, and now Expansion TankSolar Work Station: Closer view of the work station with a flow meter, pump, one way check valve, shut off valve, expansion tank and blow off valveSolar Work Station: Closer view of the work station with a flow meter, pump, one way check valve, shut off valve, expansion tank and blow off valveBoth 3 way valve assemblies: This View shows the installed Fill 3-way assembly and the 3 way space heater valve assemblyBoth 3 way valve assemblies: This View shows the installed Fill 3-way assembly and the 3 way space heater valve assembly

Solar WorkStation: Parts of the Solar Thermal WorkStation and all its parts labeledSolar WorkStation: Parts of the Solar Thermal WorkStation and all its parts labeled


We added thermal paste to the temperature sensor in the hot water tank. It still does not read the correct temp. It shows 60°F when the tank is 95°F. I will email Marshal and find out more.

Will pressure check all the lines next week.