Experimental results of different control strategies in a solar air-conditioning system at part load |
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Authors: | Luis A Bujedo Juan Rodríguez Pedro J Martínez |
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Affiliation: | a CARTIF Centro Tecnológico, Parque Tecnológico de Boecillo, parc. 205, 47151 Boecillo, Spain b Department Energy Systems, Fraunhofer Institute for Building Physics, Gottschalkstrasse 28a, D-34127 Kassel, Germany c Universidad Miguel Hernández, Avda. de la Universidad s/n, 03202 Elche, Spain |
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Abstract: | In this article, different control strategies used in a solar cooling installation are presented and compared, publishing real working data from three summer periods, with the system working at part load.The facility consists of two solar fields that feed a heating system during the winter and a 35 kW Li-Br absorption chiller during the summer period to cool part of an office building.The improvements obtained using control based on critical radiation and a variable flow mass have been compared on the solar plant with a conventional constant flow control. In the same way, the improvements obtained in the yields of a cooling production plant have been compared when programming three different controls: the first one with fixed flow masses, the second adapting the temperature on the condenser as a function of the generator temperature (constant flow mass), and the third adapting the condenser temperature and the flow mass on the generator as a function of the system loads. |
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Keywords: | Solar cooling Absorption Control Part load |
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