Heat Flow 2 : Natural Disaster. Heat flows from a warmer to a cooler substance. The rate depends upon the temperature difference, the area exposed and the type of material.
EESiFlo North America, Terminology and Glossary: HVAC Terms, Pennsylvania, USA 2002. flowmeterdirectory.com/flowmeter_terminology, (Heat, Vent and Air Cond - Amer) {553}