UAV-based thermal imaging and heat output estimation of a coastal geothermal resource: La Jolla beach, Baja California, Mexico

RENEWABLE ENERGY

卷:168

Article

Carbajal-Martinez, Daniel^1,2  Peiffer, Loic³  Hinojosa-Corona, Alejandro³  Trasvina-Castro, Armando⁴  Arregui-Ojeda, Sergio M.⁵  Carranza-Chavez, Francisco J.⁶  Flores-Luna, Carlos⁶  Mendez-Alonzo, Rodrigo⁷  Inguaggiato, Claudio³  Casallas-Moreno, Karen L.¹ 

[1] Ctr Invest Cient & Educ Super Ensenada CICESE, Posgrad Ciencias Tierra, Ensenada, Baja California, Mexico

[2] Univ Bern, Inst Geol Sci, Bern, Switzerland

[3] Ctr Invest Cient & Educ Super Ensenada CICESE, Dept Geol, Ensenada, Baja California, Mexico

[4] ULP, Ctr Invest Cient Educ Super Ensenada, Unidad La Paz CICESE, La Paz, Baja California, Mexico

[5] Ctr Invest Cient & Educ Super Ensenada CICESE, Div Ciencias Tierra, Ensenada, Baja California, Mexico

[6] Ctr Invest Cient & Educ Super Ensenada CICESE, Dept Fis Aplicada, Ensenada, Baja California, Mexico

[7] Ctr Invest Cient & Educ Super Ensenada CICESE, Dept Biol Conservac, Ensenada, Baja California, Mexico

关键词: Geothermal exploration;    Coastal geothermal resource;    Unmanned aerial vehicle;    Thermal infrared image;    Advective heat output;    Desalinization plant;   

DOI  :  10.1016/j.renene.2020.12.113

来源: Elsevier

【 摘 要 】

The exploration of unexploited geothermal resources is required to encourage the use of renewable energy. This study focuses on La Jolla beach, Ensenada, Mexico. The beach hosts a thermal anomaly with temperatures of up to 52 degrees C at the surface and up to 93 degrees C at 20 cm depth. The objectives were to: map the thermal anomaly, understand the impact of tides, quantify the thermal water discharge rate and heat output, and discuss a direct use of the energy. The mapping was performed with Unmanned Aerial Vehicles equipped with optical and thermal cameras at two different dates. Additional temperature measurements were performed with a thermocouple, while the total fluid discharge was estimated from flow measurements. A comparison between the campaigns indicated that the highest surface temperature area was more than three times larger in 2019 than in 2018 (259 m(2) vs. 69 m(2)). Such change was due to the tidal range and associated hydrostatic pressure variations. The total thermal water discharge is 330 +/- 44 L s(-1), which corresponds to an advective heat output of 40.5 +/- 5.2 MWt. The use of this energy in a Multi-Effect Distillation desalinization plant can contribute to cover the shortage of freshwater in Ensenada. (c) 2020 Elsevier Ltd. All rights reserved.

【 授权许可】

Free