On a cold winter's day, being warm and snug under the covers is a formidable temptation. Nonetheless, the day must begin, and up we must rise. The trouble is, keeping our homes as warm throughout the ...

Geothermal heat exchangers almost always use condenser water or glycol as the heat transfer medium — and, sometimes, refrigerant. Wastewater heat recovery systems typically preheat domestic cold water ...

DENVER — When a massive event center was being developed in Denver, planners had to contend with two existing 6-foot-wide sewer pipes that emptied into the river, creating an unsightly dilemma.

Absorption heat transformers (AHTs) are advanced thermal systems designed to upgrade low-grade waste heat to higher, more useful temperature levels. By exploiting the thermodynamic properties of ...