Hind Abdulrahman Mahmood, Ameer Abed Jaddoa^*, Mohammed K. Al-Saadi

Frontiers in Heat and Mass Transfer, Vol.23, No.4, pp. 1281-1302, 2025, DOI:10.32604/fhmt.2025.066075 - 29 August 2025

Abstract Thermoelectric air conditioning systems based on the Peltier effect had two modes: heating and cooling. In this work, the proposed design provides continuous improvement in COP from the first minute of operation. In cooling mode, the coefficient of performance (COP) was 1.176 due to the techniques used in this device, and it increased to 1.24 in the last minute of operation. Concerning the steady-state scenario, from the first minute, the Q_c was larger than the W for the entire duration of the operation. The output temperature reaches 18.97°C, and the temperature on the cold side reaches… More >

J. Kumari^a, C. Singh^b, R. Agrawal^c, B. L. Choudhary^a, A. S. Verma^d,e,*

Chalcogenide Letters, Vol.20, No.1, pp. 73-83, 2023, DOI:10.15251/CL.2023.201.73

Abstract Herein, we have inquired the structural, electronic and thermoelectric properties of the couple of chalcopyrite structured solids LiAlX₂ (X=S and Se) with the help of density functional theory (DFT), which is tracked by resolution of the Boltzmann transport equation with the constant relaxation time calculations. The LDA (Localized Density Approximation), PBE (Perdew-Burke-Ernzerhof), PBEsol (PBE functional revised for solids) and WC (Wu-Cohen) exchange correlation potentials have been used. The calculated lattice constants a = 5.271 Å; c = 10.178 Å and a = 6.226 Å; c = 12.165 Å for LiAlS₂ and LiAlSe₂ respectively and the band gap… More >

Alaa K. Khamis^a , Allal Bakali^a, A. A. El-Bary^b,c,*, Haitham M. Atef^d

Frontiers in Heat and Mass Transfer, Vol.15, pp. 1-6, 2020, DOI:10.5098/hmt.15.24

Abstract In this paper the effect of the magnetic field and Seebeck parameter was investigated. Modified Ohm's law that includes effects of the temperature gradient (Seebeck effect More >