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Título del libro: Proceedings Of The Ises Solar World Congress 2019 And Iea Shc International Conference On Solar Heating And Cooling For Buildings And Industry 2019
Título del capítulo: Numerical and experimental evaluation of solar air heaters connected in series

Autores UNAM:
RENE PEREZ ESPINOSA; OCTAVIO GARCIA VALLADARES; ISAAC PILATOWSKY FIGUEROA;
Autores externos:

Idioma:

Año de publicación:
2020
Palabras clave:

Air preheaters; Heating equipment; Humidity control; Numerical models; Solar equipment; Solar heating; Control-volume finite element methods; Empirical correlations; Experimental evaluation; Experimental test; International standards; Temperature and humidities; Temperature profiles; Thermal efficiency; Numerical methods


Resumen:

A numerical and experimental evaluation of three solar air heaters (SAHs) arrangement was carried out. The numerical model uses the control volume finite element method with discretization in longitudinal and axial direction using empirical correlations to solve the energy equation in a short time; as a result, the numerical model calculates the coefficients of linear and quadratic instantaneous thermal efficiency curves, the incident angle modifier, and the temperature and humidity profile in the air flow and the temperature profiles in solid materials. The experimental tests were carried out according to the methods described on the international standard ISO9806:2017. A comparison of the thermal efficiency curves obtained for one, two and three SAHs connected in series operating at 0.087m3s-1 was carried out. The thermal efficiency experimental data was used to validate the numerical model, resulting in a ±0.03 absolute error. © 2019. The Authors. Published by International Solar Energy Society Selection and/or peer review under responsibility of Scientific Committee


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