Cooling In A Liquid-To-Air Heat Exchanger

In an engine coolant circuit with a radiator and an engine, a fan and a coolant pump may be provided. The fan and pump may be electrically driven, driven by a variable speed clutch, hydraulically driven, or driven by some other actively controllable means. When an increase in heat transfer rate is i...

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Bibliographische Detailangaben
1. Verfasser:	SCHWARTZ WILLIAM SAMUEL
Format:	Patent
Sprache:	eng
Schlagworte:	ARRANGEMENTS OR ADAPTATIONS OF HEATING, COOLING, VENTILATING,OR OTHER AIR-TREATING DEVICES SPECIALLY FOR PASSENGER OR GOODSSPACES OF VEHICLES BLASTING CONTROLLING COOLING OF INTERNAL-COMBUSTION ENGINES COOLING OF MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL HEATING LIGHTING MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING PERFORMING OPERATIONS PHYSICS REGULATING STEAM ENGINES SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES TRANSPORTING VEHICLES IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	In an engine coolant circuit with a radiator and an engine, a fan and a coolant pump may be provided. The fan and pump may be electrically driven, driven by a variable speed clutch, hydraulically driven, or driven by some other actively controllable means. When an increase in heat transfer rate is indicated, the fan speed or the coolant pump speed may be increased. According to an embodiment of the disclosure, the choice of increasing the fan speed or increasing the pump speed is determined so that the power consumed is minimized. The broad concept is that dQ/dP, the gradient in heat transfer rate to power, is determined for both the fan and the pump at the present operating condition. The one with the higher gradient is the one that is commanded to increase speed.