Differenstrycksregulatorer : En studie om hydronisk reglering av radiatorsystem med hjälp av differenstrycksregulatorer

Sammanfattning: The purpose of this work was to investigate in which types of systems where use of differential pressure controllers is possible. And to analyze which success factors using of differential pressure controllers can provide. The work was done with the help of a literature review and discussions with energy consultants at the company FVB Sweden AB. This work does not assume any specific case, but treat scenarios that could occur in reality. There are three main scenarios created to demonstrate the function and importance of differential pressure controllers in a heating system. These scenarios treat cases where one pump is supplying both homes and businesses, when buildings will be built in stages and when the pump supplies a group of properties comprising both one-pipe and two-pipe systems. The study has shown that in all three scenarios imbalance in flow will occur in the heating system, this is reported under the chapter result in the report. In cases where the problem is imbalance of flows, the problem can be solved by installing only a static control valve on the outgoing return line from the property. Financial calculations carried out in this work. These calculations are showing what the additional cost will be for a differential pressure controller, compared to a static control valve. Calculations that show the cost savings that can be made when installing a differential pressure regulator has also been done. The conclusion of this work is that in all three scenarios presented in the results section, a differential pressure controller should be installed to provide the heating system with a balanced flow. Although it is a more expensive alternative, cost savings can be achieved, which justifies the installation of a differential pressure controller in the heating system.