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Open AccessFeature PaperArticle

Design of a 35 kW Solar Cooling Demonstration Facility for a Hotel in Spain

Departamento de Ingeniería Mecánica y Energía, Universidad Miguel Hernández, Avda. de la Universidad, s/n, 03202 Elche, Spain
Departamento de Termodinámica Aplicada, Universitat Politècnica de Valencia, 46022 Valencia, Spain
CARTIF Centro Tecnológico, 47151 Boecillo, Spain
Fraunhofer Institut für Energiewirtschaft und Energiesystemtechnik, 34119 Kassel, Germany
Author to whom correspondence should be addressed.
Appl. Sci. 2020, 10(2), 496;
Received: 2 December 2019 / Revised: 23 December 2019 / Accepted: 6 January 2020 / Published: 9 January 2020
(This article belongs to the Special Issue Solar Cooling Systems)
Solar cooling systems have the advantage of the coincidence between the hours of cooling demand and the hours of solar radiation availability, and they can contribute to reduce the energy consumption in buildings. However, the high cost of thermal solar cooling facilities with absorption chillers, maintenance issues, legionella risk and water consumption (associated to the necessary cooling tower) have limited the use of these systems to demonstration projects. A simplified Transient System Simulation Tool (TRNSYS) model was developed to provide the owner of the demonstration facility the information he needs for design decision-making. This model was validated with experimental data registered in a solar cooling system designed and built by the authors. Different collector field surfaces, hot water storage tank volumes, and absorption machine driving temperatures were analyzed for a hotel demonstration facility. In terms of the energy delivered to the absorption chiller the optimum dimensioning corresponded to the lowest values of the driving temperature (75 °C) and specific storage volume (15 Lm2). From an economic point of view, the saving of 1515 euros per year when compared with an electric compression chiller does not compensate the investment of 3000 euros per kW of cooling capacity that cost the thermal solar cooling facility. View Full-Text
Keywords: solar cooling; single-effect absorption chiller; TRNSYS; demonstration facility solar cooling; single-effect absorption chiller; TRNSYS; demonstration facility
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Martínez, P.J.; Martínez, P.; Soto, V.M.; Bujedo, L.A.; Rodriguez, J. Design of a 35 kW Solar Cooling Demonstration Facility for a Hotel in Spain. Appl. Sci. 2020, 10, 496.

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