Clean and low-carbon heating system in winter in cold region using agricultural and livestock waste fermentation heat as energy

By designing a fermentation heat supply system for agricultural and livestock waste, and adopting intermittent fermentation heat utilization and strict insulation measures, the problems of low biomass fermentation heat recovery efficiency and heat loss in cold regions have been solved. This has enabled efficient and clean heating and resource recycling of agricultural waste, and has alleviated air pollution and carbon emissions.

CN116202127BActive Publication Date: 2026-04-21HARBIN INST OF TECH ZHENGZHOU RES INST +1
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Patent Information

Application Number
CN202310134909.5
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2023-02-20
Publication Date
2026-04-21
Estimated Expiration
2043-02-20

AI Technical Summary

Technical Problem

Existing technologies have low efficiency in biomass fermentation heat recovery, resulting in severe heat loss in heating systems in cold regions. The lack of efficient utilization of fermentation heat from agricultural and livestock waste and insulation design makes it difficult to achieve clean heating.

Method used

Design a clean and low-carbon heating system for cold regions that uses fermentation heat from agricultural and livestock waste as energy. The system includes a fermentation chamber and a heat extraction room. It adopts an intermittent fermentation heat utilization mode, combines a steam-water heat exchanger and an air heat exchanger, uses tap water as the medium for heat storage, and is surrounded by an insulation layer. The heat transfer coefficient is strictly controlled to achieve efficient recovery and utilization of heat energy.

Benefits of technology

It improves heat utilization efficiency, stabilizes heating capacity, reduces external heat loss, realizes clean and low-carbon heating in rural areas, alleviates air pollution problems, and promotes the resource recycling and carbon emission reduction of agricultural waste.

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Abstract

This invention proposes a clean and low-carbon winter heating system for cold regions, utilizing the fermentation heat of agricultural and livestock waste as energy, belonging to the field of clean and low-carbon heating. It solves the problems of heating pollution in northern winters and the difficulty in cleanly treating agricultural and livestock waste. This invention employs an intermittent fermentation heat utilization mode, with a heat utilization efficiency greater than 60%. The aerobic fermentation process is both a production and energy consumption process. Excessive heat discharged from the system with moist steam can cause the fermentation system temperature to drop too low, affecting the production process. By intermittently extracting and venting steam, the rate at which the system controls the heat carried away by the moist steam can be controlled, ensuring sufficient energy consumption for the system itself, thereby ensuring the stability of the indoor heating energy source and improving the utilization rate of heat energy. This invention has a simple structure, conforms to building configurations, is easy to operate, and can be widely promoted.
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