FREE HEATER

Brand	Owner	Address	Description
FRE-HEATER	PAUL MUELLER COMPANY	1600 West Phelps Street Springfield MO 65802	FREE-HEATER;HOT WATER HEATING APPARATUS USING REFRIGERATION CONDENSOR;
	Where the owner name is not linked, that owner no longer owns the brand

Technical Examples

A narrow test chamber has at least one heater immersed with its major faces parallel to the fuel surface, part way up the chamber. Heater resistance increases non-linearly as a critical temperature is reached. When the heater is energized, fuel begins to evaporate. Heater temperature remains below the critical temperature until the fuel level drops to or just below the heater level, whereupon heater temperature rises quickly to the critical temperature and heater current drops sharply. The time t1 required to reach this point and the heater current or energy consumed vary according to the fuel distillation Drivability Index (DI). The DI is determined from the measured heater current and t1 or from differential measurement of t1 for two heaters mounted one above the other, by calculation or from a look-up table. The DI value is then used to control engine operation to reduce pollution and improve performance.