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Mechanical Definitions

Heat Distribution Point : The temperature at which a standard test bar (ASTM test) deflects 0.010 inch (0.254 millimeter) under a load of either 66 or 264 psi (4.55 x 105 or 18.20 x 105 newtons per square meter) as specified.

Heat Engine : It is a machine which derives heat energy from the combustion of fuel and converts the energy into mechanical energy.

Heat Exchanger : It is a device which transfers heat from one build to another or to heating chamber. The part of an injection mold in which cold plastic feed is changed into a hot melt.

Heating Surface : The surface of the absorption and transfer of heat from one medium to another is called Heating Surface.

Heat-loss flowmeter : Any of various instruments which determine gas velocities or mass flows from the cooling effect of the flow on an electrical sensor such as thermistor or resistor. The second sensor is used for compensating the temperature of the fluid. It can be also termed as thermal-loss meter.

Heat Pipe : It is a heat transfer device which consists of a sealed metal tube with an inner lining, wick like capillary material and a small amount of fluid in a partial vacuum. Heat is absorbed at one end by vaporization of the fluid and released by the condensation of the vapor at the other end.

Heat Pump : It is a machine or device which moves heat from one location(cooler reservoir) to another(hotter one). It expands mechanical energy in the process especially when the main purpose is to heat the hot reservoir rather than refrigerate the cold one.

Heat Rate : It is a ratio of the conversion efficiency of a thermal power plant or engine as heat input per unit of work output. It is expressed as BTU/kWh

Heat Seal : It is a union between two thermoplastic surfaces by application of heat and pressure to the joint.

Heatsink Cooling : It is a process of cooling a body or system by allowing heat to be absorbed from it by another body.

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