Multi-criteria optimization of an earth-air heat exchanger for different French climates

RENEWABLE ENERGY

卷:157

Article

Cuny, Mathias¹  Lapertot, Arnaud¹  Lin, Jian²  Kadoch, Benjamin¹  Le Metayer, Olivier¹ 

[1] Aix Marseille Univ, CNRS, IUSTI, UMR 7343, F-13453 Marseille, France

[2] IUT Robert Schuman, CNRS, ICube, UMR 7357, 72 Route Rhin, F-67411 Illkirch Graffenstaden, France

关键词: Earth-air heat exchanger;    Multiple-criteria decision-making;    Optimization multi-criteria;    Renewable energy;    Sensitivity analysis;   

DOI  :  10.1016/j.renene.2020.04.115

来源: Elsevier

【 摘 要 】

The Earth-Air Heat Exchanger (EAHE) is a system for cooling or preheating the blown air into a building. A modeling of this system is proposed from a model for the ground and a model for the exchanger. The results are in agreement between the outside air temperature of the numerical model and the experimental temperature measurements. A sensitivity analysis with factorial plans is carried out to determine the most impactful parameters, taking into account two energy criteria and one economic criterion. The results show that tube radius, tube length, air velocity, burial depth and soil nature are the most impactful parameters. A multi-criteria optimization study with genetic algorithms is then performed to determine the Pareto front. The criteria do not evolve in the same trend because when the cost of the energy recovered decreases, the coefficient of performance and the EAHE efficiency will deteriorate, and reciprocally. Finally, a multiple-criteria decision-making is carried out using the TOPSIS method to provide the optimal pipe configuration. The optimal solution provides a large tube length, an intermediate burial depth, and a small air velocity and tube radius. The EAHE can achieve strong energy performance in any French climate. (C) 2020 Elsevier Ltd. All rights reserved.

【 授权许可】

Free