Abstract
Conventional thermoses often realize heat preservation by lowering heat transfer through conduction, convection, and radiation all. However, since there is no perfect thermal insulation and heat leaks out till thermal equilibrium is reached, retaining heat for a very long time Is quite challenging. In this study, we proposed a container and optimized its performance using Taguchi methods and COMSOL Multiphysics®. We then fabricated the optimized container using heat storage materials to display temperature and realize greenhouse effect. This container actually holds three novel features. First, it adjusts temperature of beverage to fit in optimum drinking temperature zone using thermal storage materials. Second, it indicates current temperature of beverage inside by the displayed color. This way, the color of a thermochromic materials can notify users the best drinking time while beverage temperature changes. Third, it extends the heat preservation time of the beverage by greenhouse effect. It even gains heat to compromise the loss under solar light.