Design of Solar Thermal System for Cafeteria Tea-Coffee Making

Abstract

Now a day’s tea and coffee are the most widely used consumption product whole over the world next to water. This paper is planned to prepare the general process of preparing solar thermal system design to replace the traditional and the electrical tea and coffee making system. In the process of doing this, planning to limit the things to be done are the most things to consider. The basic issues under consideration to develop the whole research design are; design of solar collector, thermal storage system and development of tea and coffee making mechanism Dish collector of 3m aperture diameter standard has been selected for solar energy collection. The 2D assembly model of tea –coffee making has been developed using solidworks software and also the power produced by the collector is calculated using mathematical modeling and validated using SolTrace simulation by comparing the power calculated with the power developed through SolTrace. From that the heat flux reaching energy storage surface is identified and used as boundary condition order to develop ANSYS software’s simulation of the heating and cooling retention of thermal energy storage in order to identify melting and solidification hour of the storage salt. This is done to know the time required for storage salt to melt and also the time for the molten salt get changed completely to solid, which is energy storage time. At the end of the research well controlled tea and coffee cooking system in which all variable such as temperature and cooking time are efficient, effective and economic is being developed. Finally, with the developed machine it is possible to convert one liter water to steam in 15 minute for tea-coffee making purpose. In the process of ANSYS simulation the melting Hitec salt has been seen and it is possible to melt 94.2% of the slat in less than 5 hour and the cooling retention which is the storage time for thermal storage has been seen that, around 90% the salt has been solidified with less than 3 hour and 36 minutes which shows us 90 of the salt can store energy for around 3 hour and 36 minutes