Os processos do gás de cozinha como exemplo de aplicação da Física para o ensino médio

Abstract

This research began with the purpose of showing that the laws of physics, usually studied theoretically without practical application in high school or fundamental, are always present in a practical way and in the environment around us all the time. To this end we will make a study of liquified gas best known oil as cooking gas, physical processes being analyzed and interpreted from being natural state in the form of crude oil, to its final state in the form of cooking gas. Initially we will see the maturation of the oil being considered physical pressure and temperature, we will review and demonstration of each process. We will study the thermometric scales, subject. Usually studied in the second year of high school at the Thermology that are used in the distillation temperature control process. Soon after we have the pressure setting of the air molecules, the water column and units of measurements. Course will also cover the cooking gas characteristics such as density, mass, volume content seen in elementary school in the ninth year in the discipline of Sciences. We will check the type of material, size, thickness of 13kg gas cylinder manufacturing plate, and how the cooking gas bottle. We will also see the cylinder components as regulating valve, check valve, safety fuse plug, and their respective physicol processes. We will present the form and pressure reduction process in the control valve to form a seal and as the fuse plug security works. We will also see the relief valve of the gas transport to the stove, giving start the flame in the burner mouth.