If you walk into most professional engineering firms and ask them to design you a hydronic heating system OR a solar system, they will grab their manuals that show how to assemble a pressurized glycol loop.

Since it is too expensive to fill the solar storage tank with a glycol solution, the heat is transferred from the collector loop into the tank through a heat exchanger. The collector fluid goes through one side of the exchanger and the tank water goes through the other side. There are two pumps, one on each side of the exchanger, and controls to turn the pumps on. Glycol loops are "charged" all the time. This is good. ro water purification system They remain ready to run whenever the pump kicks in. When such a system is installed, coin vents (can turn the screw with a dime) are installed at all the high points where air can accumulate and vapor lock the system. As long as the boat stays in the water, all is fine.

Since pressure goes up and down with temperature, a clever system was devised to maintain a nominal pressure in the loop. A tank, called an expansion tank, is installed in a tee in the line. The expansion tank has a rubber membrane running across the middle. The system fluid fills up one side and air fills the other side. The fluid in the ro water purification system can expand and contract with temperature into the expansion tank, and the air bladder will keep the pressure within a specified range. The air pressure is set with an air hose and tire inflator, just like a car tire. A chart is used to determine the correct pressure according to the temperature of the system at the time. However, expansion tanks have a lifetime. The rubber (or neoprene, or whatever) bladder will someday crack from flexing as it ages and the expansion and pressure regulation benefits of the tank are lost. The system will usually vapor lock somewhere and the whole startup procedure has to be repeated.

If you are interested in ro water purification system, please check our website at 

https://www.qileegroup.com for details.
Or contact us
Tel: +86 021 5169 7580
Phone: +86 13817134452 &+86 13817145452 &+86 13918724674
Email: qilee@qileegroup.com
Contact person: Xia Miao
Add: Room 412, Xianglu Building, No. 3009, Gudai Road, Minhang District, Shanghai, China