Virtual sensing system
AssigneeWatlow Electric Manufacturing Company
InventorsJames N. PRADUN, Sanhong ZHANG, Jeremy J. QUANDT, David P. CULBERTSON, Magdi KHAIR
Life of this patent
Estimating the term…
Abstract
A heating system includes at least one electric heater disposed within the fluid flow system. A control device includes a microprocessor and is configured to determine a temperature of the at least one electric heater based on a model and at least one input from the fluid flow system. The control device is configured to provide power to the at least one electric heater based on the temperature of the at least one electric heater.
Claims28
A heating system for a fluid flow system, the heating system comprising:
- at least one electric heater disposed within the fluid flow system;
- and
- a control device including a microprocessor and configured to determine a temperature of the at least one electric heater based on a model and at least one input, wherein the at least one input is from the fluid flow system, wherein the control device is configured to provide power to the at least one electric heater based on the temperature of the at least one electric heater.
A heating system for a fluid flow system, the heating system comprising:
- at least one electric heater disposed within a fluid flow pathway;
- and
- a control device including a microprocessor and configured to receive at least one input, the at least one input including a mass flow rate of the fluid flow system, a fluid inlet temperature, an outlet temperature, or combination thereof,
- wherein the control device is configured to determine a temperature of the at least one electric heater based on a model and the at least one input, wherein the control device is configured to provide power to the at least one electric heater based on the temperature of the at least one electric heater.
Dependencies are inferred from the claim text.