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{{Lang|[[Kompostheizungssilo|Deutsch]] - [[Compost heater silo|English]]}}
[[File:CompostHeaterSiloConcept.jpg|thumb|Compost silo inside a dwelling hous]]
[[File:CompostHeaterSiloConcept.jpg|thumb|Compost silo inside a dwelling hous]]
The '''Compost Heater Silo''' is the central part of an inhouse [[compost heater]]. The [[composting]] process is run in an airtight silo, placed in an appropriate part of the building. The produced [[heat]] can be distributed by a heating circuit, whereas a simple model of such a compost heater silo does not require a water circulation, radiating the heat directly to the interiors of the house. In autumn the silo is filled up with fresh [[biomass]], after which the silo delivers comfortable heat all winter long.
The '''Compost Heater Silo''' is the central part of an inhouse [[compost heater]]. The [[composting]] process is run in an airtight silo, placed in an appropriate part of the building. The produced [[heat]] can be distributed by a heating circuit, whereas a simple model of such a compost heater silo does not require a water circulation, radiating the heat directly to the interiors of the house. In autumn the silo is filled up with fresh [[biomass]], after which the silo delivers comfortable heat all winter long.

Revision as of 12:30, 21 October 2018

Template:Lang

Compost silo inside a dwelling hous

The Compost Heater Silo is the central part of an inhouse compost heater. The composting process is run in an airtight silo, placed in an appropriate part of the building. The produced heat can be distributed by a heating circuit, whereas a simple model of such a compost heater silo does not require a water circulation, radiating the heat directly to the interiors of the house. In autumn the silo is filled up with fresh biomass, after which the silo delivers comfortable heat all winter long.

Construction

Construction of the silo
Using a heat exchanger for the inlet air
Using an existing waste water canal for the inlet air

Inlet air and outlet air provide the necessary oxygen supply for the microbes and invertebrates in the silo. To avoid a bad smell, the outlet air must go out to the open, and it must be protected against incoming animals (mice).

The moisture in the silo must be high enough to support the composting process, providing optimal conditions for microbes and fungi. After successful start the decay process produces additional water, which is drained at the bottom of the silo. This water can be put in to the top of the silo for better distribution of the microbes in the whole processing volume. If pumped periodically or continuously to the top and let it rinse through the silo the whole system becomes similar to the wet composting (C.R.O.P. Project of the DLR[1][2]).

An additional water pipe can be vertically built into the silo for warming up water. The pipe is constructed not to hinder the slump down of the biomass.

The outlet air is leaking part of the heat. There are a few solutions to reduce this:

  • An optional heat exchanger ocan be built in (see picture on the right).
  • Connecting the inlet air to a waste water canal.
Prototype

Conditions of Usage

The amount of produced heat is limited. The size of the compost heater silo must be adapted to the actual heat energy demands of the building. For calculations refer to the respective paragraph in compost heater.

Existing Systems

  • Prototype of size 300 liter for feasibility study. It serves for research on the features and their optimization. The system has been working since September 2017 and is doing very well.

Information on the Internet

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