Contrary to popular thought, heat is not a substance; therefore, it has no physical attributes. Heat is a wave of energy in flux that moves from higher concentrations to lower concentrations. Of three types: radiant heat can move at the speed of light, convective heat circulates through fluids, and conductive heat is transferred by contact.
Although many heat devices make it appear otherwise, heat does not “rise.” Flames from a fire reach upward because combustion needs oxygen. Refrigerated open displays in supermarkets remain cool because air containing less heat is denser than air containing more heat. On a cold winter day it is accurate to say, “Close the door, you’ll let the heat out,” rather than, “Close the door, you’ll let the cold in.” Cold is the absence of heat, hence the Absolute Temperature Scale. (Absolute 0 = -273oC)
Industrial and residential heat exchangers pass heat energy via conduction without mixing their fluids. The heat passes from the hotter object through the wall of its container to the less hot object and will continue to do so until equilibrium is established—the same temperature throughout if one includes environmental influences.
Efficiency in transferring heat is the prime consideration on the market today. The exchange must be timely, it must be thorough, it must be expedient, and it must be economical. Industrially, enclosed fluids often require certain temperatures to be uniformly dispersed, and it must be done ASAP. Heat transfer devices often use 5000C steam rather than 100oC water despite the smaller specific heat value of steam compared to water. Using heated materials that are essential elsewhere in the production process are rerouted into heat exchange lines.
Komax Systems, Inc. features not only a selection of state-of–the-art heat exchangers, but can effectively design them for specific situations.