Hardware and Software Implementation for Solar Hot Water System in Northern Regions of Russia

• Published in: Energies
• Main Authors: Nikolay Tsvetkov, Stanislav Boldyryev, Aleksandr Shilin, Yuriy Krivoshein, Aleksandr Tolstykh
• Format: Article in Journal/Newspaper
• Language: English
• Published: MDPI AG 2022
• Subjects: renewable energy; permafrost region; solar energy; hardware and software implementation; hot water system; Technology; T; Sakha; Yakutsk; Zhatay; permafrost; Republic of Sakha; Yakutia; Siberia
• Online Access: https://doi.org/10.3390/en15041446; https://doaj.org/article/407b33354a394af4a774b59ec4af5e5b

Acceleration of energy transition will become the crucial social, political and technical challenge of the 21st century and will be largely associated with the growing use of renewable energy sources, including solar power. This study provides some experimental results of using solar hot water systems (HWS) embedded in apartment buildings located in the energy-efficient district called Zhatay in Yakutsk city, in the Republic of Sakha (Yakutia). The low annual solar fraction of HWS was found for 2019. It is equal to 0.2869 and caused by thermal energy loss from the hydraulic circuit during the nighttime. The study suggests increasing solar fraction in HWS and implementing a software and hardware system. The experimental evaluation of these studies was performed by testing a solar water heating pilot plant in Kaftanchikovo village in Tomsk Region (Western Siberia). As a result of HWS testing, it was found that the annual solar fraction can be significantly increased by preventing the heating agent from night freezing in hydraulic circuits of tube collectors, even when the outdoor temperature is below its freezing point.