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New insulation design prevents humidity related energy loss in heat storage

In order to prevent condensation problems in vertical heat storage tanks, Altisol has optimized their insulation designs with a cavity system. By creating a slightly hollow cavity space between the insulation material, the storage tank, and the outside plating, a natural air stream ventilation is created, decreasing humidity-related problems in the insulation. 

Recently Altisol completed the insulation of a vertical heat storage tank at Dutch tomato grower Schenkeveld, who is currently building 44 hectares in Rijsenhout. Pictures of the insulation work reveal that the engineers of Altisol have came up with a clever system to decrease humidity in the insulation. 

John de Vreugd, managing director of Altisol Insulation, explains: "Due to the difference between the inside and outside temperature, condense water is formed on the outside of the metal tank. This often makes the insulation stone wool very wet, especially at the top of the tanks. For this reason we have now created a cavity between the insulation material and the tank, in order to create a natural air stream that removes the evaporated water from the cavity to the outside."

The spacers on top of the heat storage tanks create an additional 40 mm space on top of the 200 mm insulation wool. A special relief valve on top of the tank allows the air stream to drain the condense water. De Vreugd explained that this new insulation design will become the standard for all of the vertical heat storage tanks. "A dryer insulation wool results in better heat retention and less heat loss."

Altisol is globally active in the field of insulating heat storage systems, heating infrastructure and CHP and boiler rooms. The company has a big focus on activities in greenhouse horticulture and agriculture. Last year they insulated about 60 heat storage tanks all over the world, from Europe to North America and from Japan to Australia.

For more information: 
John de Vreugd

Publication date: 11/22/2017
Author: Boy de Nijs



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