Compost-powered Hot Water

mound of wood mulch with mini biogas digester ready to start composting

Description:

Compost-powered hot water systems achieve heat without combustion, without use of fuel, as an effect of the soil-making process. This is a wonderful synergy to achieve.

How it Works:

Water tubing coiled through the mound of shredded wood mulch enables the "compost pile" to heat water for cleaning/sanitation as well as for use in radiant heating systems.

Making the mound of proper consistency shredded wood can result in a year of hot water production, from the one pile. This biological decomposition gives off more heat than the material would yield through combustion, and the end result becomes soil.

Status:

  • That compost gets warm has been known by (some)humans forever,
  • Not commercially available

Ecological Principles:

Areas of Need:

  • Sanitation
  • Heat
  • Fertility

Related Tech:

  • coppicing - how much hedgerow is required to produce a mulchpile annually?