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Gasholder above secondary digester , heat usage .

二级以上沼气池储气罐,热量利用。

The criterion of supportive installation on rural household biogas digester .

农村户用沼气池配套安装规范。

The regulation of using and management on rural household biogas digester .

农村户用沼气池使用管理规程。

Collector area optimization of integrated solar and ground source heat pump system for heating biogas digester .

太阳能地源热泵沼气池加热系统集热面积优化。

He has installed an anaerobic digester , a wind turbine , solar panels and a ground-sourced heat pump .

他建起了厌氧消化池，安装了风轮机、太阳电池板和地源热泵。