In areas where distances and proximities are advantageous, the Biogas to District Energy Projects are strategically situated near communities with residential, institutional, and commercial space heating demands. Similar to Biogas to Power and Biogas to Industrial Boiler projects, these initiatives utilize comparable organic feedstocks and technology, yielding similar biogas quantities and heating values from anaerobic digesters or lagoon digesters.
From these projects, biogas is supplied to either Central District Energy Boilers or Power Generation Equipment, which in turn provide thermal energy in the form of hot water and chilled water to customer locations for heating and cooling purposes via insulated underground pipes. Chilled water is generated using Lithium Bromide Single Stage Absorption Chillers with a high coefficient of performance (COP) of approximately 0.60. The overall efficiencies for Biogas to District Energy range from 85% using central boilers for heating and above 90% using waste heat from power generation equipment for heating and cooling.
