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Open AccessArticle

Design and Analysis of the Domestic Micro-Cogeneration Potential for an ORC System Adapted to a Solar Domestic Hot Water System

1
Centro de Investigación en Materiales Avanzados, S.C., CIMAV, Chihuahua 31136, Mexico
2
Instituto de ingeniería, Universidad Autónoma de Baja California, Mexicali 21100, Mexico
*
Author to whom correspondence should be addressed.
Entropy 2019, 21(9), 911; https://doi.org/10.3390/e21090911
Received: 30 July 2019 / Revised: 22 August 2019 / Accepted: 11 September 2019 / Published: 19 September 2019
(This article belongs to the Special Issue Thermodynamic Approaches in Modern Engineering Systems)
This paper proposes the configuration of an Organic Rankine Cycle (ORC) coupled to a solar domestic hot water system (SDHWS) with the purpose of analyzing the cogeneration capacity of the system. A simulation of the SDHWS was conducted at different temperatures, observing its performance to determine the amounts of useable heat generated by the solar collector; thus, from an energy balance point of view, the amount of heat that may be used by the ORC could be determined. The working fluid that would be suitable for the temperatures and pressures in the system was selected. The best fluid for the given conditions of superheated vapor at 120 °C and 604 kPa and a condensation temperature of 60 °C and 115 kPa was acetone. The main parameters for the expander thermodynamic design that may be used by the ORC were obtained, with the possibility of generating 443 kWh of annual electric energy with 6.65% global efficiency of solar to electric power, or an overall efficiency of the cogeneration system of 56.35% with a solar collector of 2.84 m2. View Full-Text
Keywords: solar domestic cogeneration; Organic Rankine Cycle; acetone; evacuated tube solar collector solar domestic cogeneration; Organic Rankine Cycle; acetone; evacuated tube solar collector
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MDPI and ACS Style

Leal-Chavez, D.; Beltran-Chacon, R.; Cardenas-Terrazas, P.; Islas, S.; Velázquez, N. Design and Analysis of the Domestic Micro-Cogeneration Potential for an ORC System Adapted to a Solar Domestic Hot Water System. Entropy 2019, 21, 911.

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