Glycol Circuit
 Custom Search This glycol circuit presents mechanical equipment that would be included on the heat exchanger secondary circuit. Circuit Circulating Pumps The purpose of the circuit pumps is to provide a mixture of glycol and hot water through the secondary side of the heat exchanger to heating components throughout the building. Circuit Charging Tank The circuit charging tank provides a means to charge the heating system heating system glycol circuit when necessary. Fluid may be stored in a tank under a higher pressure than the operating pressure of the system. It is pumped into the heating system when necessary to add to the system. It will be a mixture and the higher percentage solution the greater the protection from freezing of the system. The automatic makeup system consists of: One side of the system is connected to the pressurized charging tank and the other is connected to the line from the heating system to the expansion tank. The pressure reducing valvemaintains a constant pressure on the heating system by allowing fluid to enter the system to the expansion tank. The pressure reducing valve maintains a constant pressure by allowing fluid to enter the system when the system pressure drops below the pressure reducing valve setting. The shut off valves are used to isolate the the PRV should it malfunction. The bypass valve is opened manually to add solution whenever the expansion tank level drops too low. Expansion Tank The circuit expansion tank allows for fluctuation in the volume of fluid as the temperature changes. The expansion tank size is as designed to allow for full operating temperature ranges in the glycol. Under normal operating conditions the tank level should not rise above the top or drop below the bottom of the sight glass. The sight glass is mounted on the side of the expansion tank. The pressurization serves three purposes: Return from Glycol Circuit to Homepage Build, host and track an SBI website $29.99 per month. |
