| 摘要 |
The invention refers to a heating- and cooling system (1) comprising a closed tank (2) working as an accumulator tank containing a volume of liquid (5), preferably water, and a colume of gas (3), preferably nitrogen, said tank (2) being designated to give off energy for heating or cooling of preferably a building or stored water or some other liquid while preventing entrance of air. An expansion bellows (7), which is provided to communicate with said gas volume (3) in the tank (2), is directly or indirectly connected via at least one connection (8) to the upper part (4) of the tank (2) in order to take up changes in the volume- and/or pressure of the liquid volume (5) and/or gas volume (3) on the tank (2) in order to take up changes in the volume- and/or pressure of the liquid volume (5) and/or gas volume (3) in the tank (2) at the same time as said expansion bellows (7) prevents entrance of air and oxygenation of the water in the tank, a constant low pressure being maintainable in the system (1) regardless of how the above-mentioned volumes and pressures of water and gas varies. |
