Prototype of multi-thermoelectric unit with open- and closed-loop air channel designs: heat transfer and energy analysis
Abstract
This study experimentally compares open-loop and closed-loop thermoelectric air-channel configurations composed of five TEC1-12706 modules operating under forced convection. The prototype was tested at air velocities over a 30 min operating period. The thermal response, power consumption, and coefficient of performance were interpreted using air-side energy balances. The open-loop arrangement was the only configuration that produced useful net cooling, with a maximum air temperature reduction of about 5°C at 1.5 m/s and a peak COP of about 0.82 at 2.5 m/s. By contrast, the closed-loop produced progressive reheating, which reported air-side heat gain reaching 1083.7 W at 3.5 m/s.
Fields of Study & Subjects
Advanced Thermoelectric Materials and Devices
Heat Transfer and Optimization
Adsorption and Cooling Systems
Publication details
- Journal / source
- Experimental Heat Transfer
- Publisher
- Informa UK Limited
- Volume
- 39
- Issue
- 6
- Pages
- 853–868
- Publication date
- 12 April 2026
- Language
- EN