Research of the heat storage time on solar water energy storage floor

On the base of the getting best action of the phase change material (PCM) properties, a new radiant heating structure of the energy storage floor by solar hot water is designed, which was to put heat pipes in PCM layer, without concrete in it. The PCM thermal storage time is mainly studied when the floor surface temperature is admired under different low-temperature hot water temperatures. With the method of enthalpy, the PCM heat storage time was mainly studied under different supply water temperatures, different supply water flows, different distance between water wipe in the floor construction, different floor covers and different insulation conditions.