SolarUS, a manufacturer and distributor of solar collectors and solar thermal products, has been in the solar thermal industry for more than 30 years. During that time, the company’s experienced team has considered many technologies in pursuit of maximizing the amount of energy its equipment can extract from the sun.
SolarUS designs and installs closed-loop glycol systems, the most widely used solar thermal system design. In the past, other solar thermal system technologies such as drain-back equipment offered users better heat transfer characteristics than closed-loop systems. To improve efficiency, SolarUS uses flat plate and evacuated tube collectors, which have strong heat transfer characteristics. Also, unlike steam-back and drain-back equipment, the closed-loop glycol systems have heat transfer fluid loops that offer freeze protection and corrosion protection. Properly designed closed-loop systems also offer users simple, cost-effective installations with protection against steam expansion.