Uniform representation of system performance for solar hybrid systems

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Abstract

Energy efficient HVAC solutions may be obtained by combining different energy sources - fossil and renewable - into single hybrid systems. This leads to a variety of system concepts with specific boundary conditions. As a consequence, the definition of a unique representation method and a standardized performance evaluation procedure is a challenging task. Currently, two international projects promoted by the IEA are dealing with the representation and the performance calculation of a particular category of hybrid systems, i.e. integrated solar assisted systems. The HPP Annex 34 "Thermally Driven Heat Pumps for Heating and Cooling", whose goal is to reduce the environmental impact of heating and cooling by the use of thermally driven heat pumps, has solar cooling as one of the systems under investigation. The joint project between SHC and HPP Task 44 / Annex 38 "Solar and Heat Pump Systems" is focused on different system combinations of solar thermal collectors and heat pumps. The scope of the present paper is to show a systematic methodology to represent and evaluate the energy performance of complex hybrid systems. The proposed approach is a joint effort of the on-going IEA activities and will be discussed regarding the mentioned solar hybrid systems. However, the final goal of the work is to provide a basis for a simple, fair and transparent comparison of all systems for heating and cooling, regardless of the technology. © 2012 The Authors.

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APA

Fedrizzi, R., Malenkovic, I., Melograno, P., Haller, M., Schicktanz, M., Herkel, S., & Ruschenburg, J. (2012). Uniform representation of system performance for solar hybrid systems. In Energy Procedia (Vol. 30, pp. 73–83). Elsevier Ltd. https://doi.org/10.1016/j.egypro.2012.11.010

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