Mushroom Compost Unit

    Mushroom compost unit — bunker, tunnel and blower system

    A compost unit prepares the substrate that feeds mushroom production. Bunker and tunnel design, blower capacity, manifold layout and the compost cycle all decide compost quality.

    Last updated: 2026-10-08

    What is a compost unit?

    A dedicated facility with bunker(s), tunnel(s) and an air system to convert raw substrate into ready-to-spawn compost.

    Bunker, tunnel, pre-wetting and mixing area

    • Bunker: aerated pre-composting / Phase I area.
    • Tunnel: controlled Phase II pasteurisation and conditioning.
    • Pre-wetting and mixing area: prepares the substrate before bunker loading.

    20T and 30T references

    HyperCold designs compost units around standard batch sizes such as 20T and 30T. Final batch size, number of bunkers and number of tunnels depend on the operator's production plan.

    Blower requirement

    A correctly sized blower is the heart of the compost air system. Blower selection affects compost quality and operating cost.

    Control panel

    A control panel for the blower, dampers and sensors keeps the cycle repeatable across batches.

    Flex pipe / manifold

    A flexible pipe / manifold network distributes air across the bunker and tunnel floor — design affects uniformity and compost quality.

    Civil and electrical scope

    • RCC bunker and tunnel floor with proper drainage.
    • 3-phase electrical supply to the blower and panel.
    • Approach for raw material in and finished compost out.

    Compost cycle

    A multi-day cycle covering pre-wetting, bunker (Phase I), tunnel (Phase II) and conditioning. Exact cycle time is operator-specific.

    Frequently Asked Questions

    What would you like to do next?

    Every HyperCold project starts with one of these steps. Pick the one that fits your stage.

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