The Relationship between Thermoelectric and Thermodynamics Concepts and Dehumidifier for Understanding Physics in Senior High Schools

摘要

Today, the development of technology has reached at an amazing level. Either in households or industries, technology becomes an important necessity that facilitates human life. There are many technologies around us that use physics principles learned at senior high schools. However, many senior high school students are not aware that their daily life technologies are closely linked with the principles. The students only memorize physics formulas without knowing the theories and their applications. This paper describes the working principle of a dehumidifier, which is an equipment to make our body comfort by reducing room's humidity, related to the topic on thermoelectric given to senior high school students. The main working principle of dehumidifier is to change humid air into water droplets using a small fan and a cooling coil. The dehumidifier sucks humid, hot air by employing the small fan. The humid, hot air touches the cooling coil so that the water content in air thickens and it becomes water droplets. The water droplets finally drip to the collecting bucket. This principle is closely related to the concept of thermoelectric and thermodynamic concepts learned in high schools.