Experimental investigation of the thermoelectric cooling with vacuum wall system

Abstract

Thermoelectric cooling (TEC) modules are being accomplished in many devices due to their flexible sizing. This application needs a DC to make a cooling effect. In this study, the experiment was focused on the cooling system design using TEC in a vacuum wall. The vacuum wall is known as being well-insulated which helps to reduce the heat load of applications. A cooling box for vaccine preservation was designed in this study, with the inside temperature varied between 17, 19, 21, 23, and 25 °C. Vacuum conditions of −15, −20, and −25 in Hg were used. The results show that the power required decreases when the inside temperature increases. The TEC can control the inside temperature as well, when the outside ambient temperature is slightly different in all testing conditions. The power varies directly with the vacuum level, which shows that the vacuum wall can reduce the heat load from the outside environment. Moreover, the correlation of the power requirement in which the inside temperature can be predicted with good agreement is reported.

Keywords

• TEC cooling
• Thermoelectric application
• Vacuum wall