Experimental Study on Seasonal Ground-Coupled Heat Storage and Harvesting in Cold Regions
Processes, ISSN: 2227-9717, Vol: 12, Issue: 12
2024
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Peking University Researcher Yields New Findings on Technology (Experimental Study on Seasonal Ground-Coupled Heat Storage and Harvesting in Cold Regions)
2024 DEC 25 (NewsRx) -- By a News Reporter-Staff News Editor at Tech Daily News -- Research findings on technology are discussed in a new
Article Description
In recent years, global efforts toward sustainable energy have intensified, aiming to reduce carbon emissions and boost energy efficiency. Heating in winter and hot water for hygiene are essential, especially in cold climates where heating demands significantly impact household energy consumption. This study examines a city in western Inner Mongolia, characterized by a severe cold climate and unique geology. A test system with dual U-shaped buried pipes for ground source heat storage and extraction was constructed, utilizing two layout schemes. Drilling tests measured formation parameters, highlighting how pipe layout and soil characteristics influence heat storage. Short-term 5-day cycles and cross-seasonal 60-day cycles were tested. Results showed upper soil suited for frequent short-term storage, while lower soil favored long-term energy retention. Increasing buried pipes raised soil temperature and storage capacity, enhancing thermal stability in short-term cycles. However, while the long-term storage capacity improved, heat loss also rose. Effective ground source heat pump design in cold regions should consider environmental temperatures, pipe optimization, soil characteristics, and heat storage duration to achieve stable, efficient operation.
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