EQUIPMENT CAPACITY AND HEATING NETWORK PIPE DIAMETER OPTIMIZATION OF CENTRALIZED SOLAR HEATING SYSTEM IN AREAS ABUNDANT WITH SOLAR ENERGY RESOURCES

Liu Yanfeng; Mu Ting; Luo Xi; Hu Xiaoxue; Hu Deze

doi:10.19912/j.0254-0096.tynxb.2021-0693

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Acta Energiae Solaris Sinica ›› 2023, Vol. 44 ›› Issue (1) : 85-93. DOI: 10.19912/j.0254-0096.tynxb.2021-0693

EQUIPMENT CAPACITY AND HEATING NETWORK PIPE DIAMETER OPTIMIZATION OF CENTRALIZED SOLAR HEATING SYSTEM IN AREAS ABUNDANT WITH SOLAR ENERGY RESOURCES

Liu Yanfeng, Mu Ting, Luo Xi, Hu Xiaoxue, Hu Deze

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Abstract

Present studies usually optimize the design of solar heating station and the heating network respectively in the optimization design of centralized solar heating systems. In this study, a joint model to simultaneously optimize the equipment capacity and heating network pipe diameter of the centralized solar heating system, with the optimization objective of minimization of life cycle cost, is established and solved by genetic algorithm. The results are analyzed and compared with the conventional method and engineering method through an exemplified case, which show that1） the joint optimization model could avoid the low solar fraction and high heating pipe resistance that do not meet the requirement; 2） the optimal minimum water supply temperature decreases from 60 ℃ to 45 ℃ as the solar fraction increases from 50% to 100%; 3） with the increase of solar fraction, the ratio of the water tank volume to solar collector area increases, while the pipe diameter of the heating network remains unchanged.

Key words

solar energy / solar collector / district heating / optimization design / genetic algorithms / solar fraction

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Liu Yanfeng, Mu Ting, Luo Xi, Hu Xiaoxue, Hu Deze. EQUIPMENT CAPACITY AND HEATING NETWORK PIPE DIAMETER OPTIMIZATION OF CENTRALIZED SOLAR HEATING SYSTEM IN AREAS ABUNDANT WITH SOLAR ENERGY RESOURCES[J]. Acta Energiae Solaris Sinica. 2023, 44(1): 85-93 https://doi.org/10.19912/j.0254-0096.tynxb.2021-0693

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