Experimental investigation of phase change material utilization inside the horizontal mantled hot water tank


10th Exergy, Energy and Environment Symposium, Katowice, Poland, 1 - 04 July 2018, pp.1-7

  • Publication Type: Conference Paper / Full Text
  • City: Katowice
  • Country: Poland
  • Page Numbers: pp.1-7


Sensible thermal energy storage and hot water tanks are an important issue for solar thermal application in hot water usage. Hot water tanks are commonly used in solar domestic hot water systems. There are many types and classicifation for hot water tanks. However, the main classification is related to position of the tank which are horizontal and vertical. There is a limited number of studies which are related to horizontal mantled hot water tank. There is no clear study using phase change material in horizontal mantled hot water tank. This study deals with process of storing latent heat in horizontal mantled hot water tanks. Effect of paraffin amount on thermal energy storage in horizontal mantled hot water tanks was determined experimentally. A commercial horizontal mantled hot water tank model was used. At the end of study, it was found that using paraffin inside the hot water tank increases the thermal energy storage capacity. However, the amount of obtained hot water did not increase proportionally with the increase of the amount of paraffin because, the volume of tank is constant, and the water volume was reduced with increasing the paraffin volume. Stored energy in the paraffin was not transferred to water. Temperature of the water did not increase to desired level. The optimum paraffin amount was found as 4 liters.