Investigations on stratification devices for hot water heat stores

Abstract

SUMMARYThe significance of the thermal stratification for the energy efficiency of small solar thermal hot water heat stores is pointed out. Exemplary the thermal stratification build-up with devices already marketed as well as with devices still in development has been investigated experimentally and theoretically, taking into account different realistic operation conditions. The methods (selective temperature measurement, non-invasive field measuring methods PIV and LIF, computational fluid dynamics (CFD)) suitable for the experimental and theoretical analysis of thermal stratification devices are introduced.

Uso de la energía solar en sistemas de producción agropecuaria: producción más limpia y eficiencia energética

“…En esta modalidad, no se utiliza ningún tipo de energía, sino solamente la gravedad. No obstante, en función de los niveles en los tanques de agua, en la modalidad de flujo forzado se usa una bomba para el movimiento del agua dentro del sistema (Despaigne, Torres, Maceo & Cobián, 2003;Andersen, Furbo, Hampel, Heidemann & Müller-Steinhagen, 2007;Khan et al, 2010;Anderson et al, 2008;Alvarado, 1998;Wongsuwan, 2005, y RES & RUE DISEMINATION, 2005.…”

Numerical Investigation of Effective Heat Conductivity of Fluid in Charging Process of Thermal Storage Tank

“…Altuntop et al [11] analyzed the effect of using different obstacles on thermal stratification in a cylindrical hot water tank. Andersen et al [12] analyzed the thermal stratification devices for hot water heat stores by means of CFD and experimental study. They investigated the inlet stratification pipe effect with a limited number of operating conditions appearing in solar collector loops.…”

Design and co-simulation of a seasonal solar thermal system for a Canadian single-family detached house

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