This build at Mike Rimoin’s student housing co-op in Seattle was Solar CITIES 20th biodigester build.

January 16, 2010

A modified Solar CITIES digester using HDPE reactor with solar heat exchanger as reactor and 55 gallon drum telescoping gas collectors. Starter material is elephant dung and manure from 27 other species of animal from the Woodland Park Zoo in Seattle courtesy of horticulturist David Selk and Dan Corum aka “Dr. Doo”.

rimoinheat

Image 3 of 3

For heating in the cold Seattle winters we used an old radiator connected to a solar hot water heater.