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Appl. Sci. 2019, 9(6), 1220;

Thermodynamic Analysis of a Half-Effect Absorption Cooling System Powered by a Low-Enthalpy Geothermal Source

Facultad de Ciencias Químicas, Universidad Autónoma de Nuevo León, Av. Universidad s/n, Ciudad Universitaria, San Nicolás de los Garza, Nuevo León 66455, Mexico
Instituto de Energías Renovables, Universidad Nacional Autónoma de México, Privada Xochicalco S/N, Col. Centro, Temixco, Morelos 62580, Mexico
Centro de Investigación en Ingeniería y Ciencias Aplicadas, Universidad Autónoma del Estado de Morelos, Av. Universidad 1001, Col. Chamilpa, Cuernavaca, Morelos 62209, Mexico
CONACYT-Centro de Investigación Científica y de Educación Superior de Ensenada, División de Ciencias de la Tierra, Carretera Ensenada-Tijuana No. 3918, Zona Playitas, Baja California 22860, Mexico
CONACYT-Instituto Mexicano de Tecnología del Agua, Paseo Cuauhnáhuac, 8532, Col. Progreso, Jiutepec, Morelos 62550, Mexico
CONACYT-Instituto de Investigaciones en Ciencias de la Tierra, Universidad Michoacana de San Nicolás de Hidalgo, Edif. “U” Ciudad Universitaria, Morelia, Michoacán 58060, Mexico
Author to whom correspondence should be addressed.
Received: 31 January 2019 / Revised: 6 March 2019 / Accepted: 13 March 2019 / Published: 22 March 2019
(This article belongs to the Section Energy)
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A thermodynamic analysis of a half-effect absorption cooling system powered by a low-enthalpy geothermal source was carried out. This paper presents modeling of the half-effect absorption cooling system operating with an ammonia/lithium nitrate mixture and based on the first and second laws of thermodynamics, using as energy inputs real data from two geothermal wells located at Las Tres Vírgenes volcanic complex, Baja California Sur, México. Plots of coefficients of performance and exergy efficiency against condenser, evaporator, and generator temperatures are presented for the half-effect cooling system. The results showed that the system was able to operate at generation temperatures between 56 and 70 °C, which were supplied by the geothermal wells in order to produce cooling at temperatures as low as −16 °C, achieving coefficients of performance between 0.10 and 0.36, while the exergy efficiency varied from 0.15 to 0.40 depending on the system operating temperatures. View Full-Text
Keywords: half-effect absorption system; geothermal source; low enthalpy; thermodynamic analysis half-effect absorption system; geothermal source; low enthalpy; thermodynamic analysis

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Hernández-Magallanes, J.A.; Ibarra-Bahena, J.; Rivera, W.; Romero, R.J.; Gómez-Arias, E.; Dehesa-Carrasco, U.; Espinoza-Ojeda, O.M.; Kozhiparambil Chandran, S. Thermodynamic Analysis of a Half-Effect Absorption Cooling System Powered by a Low-Enthalpy Geothermal Source. Appl. Sci. 2019, 9, 1220.

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