A RPESSURELESS HOT WATER ACCUMULATOR FOR DISTRICT HEATING SYSTEMS, AND A METHOD AND ARRANGEMENT FOR MAINTAINING THE STEAM OR WATER VAPOUR ABOVE THE HOT WATER LAYER IN THE PRESSURELESS H

摘要

The present invention is a diffuser (7, 8) configured to be maintained between the hot water layer (4) and the cold water layer (5) when turbulence can occur in the quantity of the accumulator tank (1) and hot water and cold water are transferred to the tank at maximum. It relates to a pressureless hot water accumulator for a district heating system, and a method and apparatus for maintaining water vapor present on the hot water layer (4) under a certain overpressure state to prevent the inflow of oxygen.