A low cost thermal bath (room temperature to 0 ºC)

Química Nova

Gonçalves, Cristiane C.¹  Lima, Ângelo M. V.¹  Quintella, Cristina M.¹  Santos, José C. dos¹  Guimarães, Alexandre K.¹  Pepe, Iuri M.¹  Universidade Federal da Bahia, Salvador¹ 

关键词: thermostatization;    instrumentation for chemistry laboratories;    thermal bath.;   

DOI  :  10.1590/S0100-40422003000100021

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 摘 要 】

Thermal baths to decrease ambient temperature are an indispensable tool for most research and teaching laboratories, especially those in tropical or equatorial regions. A simple and inexpensive thermal bath has been developed based on a scratched compressor. It has three possible setups for cooling: sample immersed into the bath, sample flowing through the bath, and cooling liquid flowing in a jacket around the sample. It has been tested for 40 months. The temperature ranges from room temperature to 0 °C, when using water. The repeatability is better than 3% and the precision varies from 0.5% to 2%.

【 授权许可】

Unknown