An above-ground solar biogas digester that can realize the natural circulation of the hot water system

A technology of natural circulation and hot water system, applied in the field of solar energy and biomass energy utilization, to achieve the effect of reducing workload, saving electricity consumption and promoting sustainable development

Active Publication Date: 2015-11-18
LIAONING TECHNICAL UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there is no method and device design for applying natural convection water circulation to solar biogas digesters

Method used

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  • An above-ground solar biogas digester that can realize the natural circulation of the hot water system

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Embodiment Construction

[0021] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0022] This embodiment is applied to the northern city of Shenyang.

[0023] Such as figure 1 As shown, an above-ground solar biogas digester capable of realizing the natural circulation of the hot water system includes a solar hot water circulation system 11 and a biogas fermentation tank 2. The solar hot water circulation system 11 is a closed loop consisting of a solar collector 1, a riser 3. Heat storage tank 5, descending heat dissipation pipe group 6, return water collection tank 7 and return water pipe 8, ascending pipe 3 of solar hot water circulation system 11, heat storage tank 5, descending heat dissipation pipe group 6 and return water The water collection tanks 7 are all arranged inside the biogas fermentation tank 2, the structure of the biogas fermentation tank 2 is a glass fiber reinforced plastic sphere with a diamet...

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Abstract

The invention belongs to the technical field of solar and biomass energy utilization and in particular relates to an overground solar methane tank capable of realizing natural circulation of a hot water system. According to the overground solar methane tank, the natural circulation of the solar hot water system is realized by virtue of a siphon force generated by density difference of cold and hot water, the fermentation temperature of methane in a methane fermentation tank is increased, and the rate of methane production by fermentation is increased. The overground solar methane tank comprises the solar hot water circulation system and the methane fermentation tank, wherein the solar hot water circulation system comprises a solar heat collector, an ascending pipe, a heat storage water tank, a descending heat dissipation pipe set, a water return and collection tank and a water return pipe; a water outlet in the top of the solar heat collector is communicated with the heat storage water tank through the ascending pipe; the heat storage water tank is communicated with the water return and collection tank through the descending heat dissipation pipe set; the water return and collection tank is communicated with a water inlet in the bottom of the solar heat collector.

Description

technical field [0001] The invention belongs to the technical field of solar energy and biomass energy utilization, in particular to an above-ground solar biogas digester capable of realizing natural circulation of a hot water system. Background technique [0002] Using solar energy to increase the temperature of biogas fermentation in the biogas digester is a common technical means for increasing the temperature of the biogas digester, so that the biogas can be kept at the medium temperature and high temperature fermentation stage, and the fermentation gas production rate can be increased. But at present, almost all the designs of solar biogas digesters use circulating water pumps to provide power for hot water circulation in pipelines, such as solar constant temperature biogas digesters (Chinese patent application number 201210055393.7), solar biogas digesters (application number 201110063984.4 Chinese patent), etc.; the water pump consumes electric energy during long-term...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C12M1/107C12M1/02
CPCY02E50/343C12M21/04C12M41/24C12M43/00Y02E50/30
Inventor 王珏孙多斌庄宇周辰
Owner LIAONING TECHNICAL UNIVERSITY
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