A Precise Closed-Loop Temperature-Control System

A control system that includes a single thermal source has been designed to afford precise control of the temperature of a fluid flowing in a closed-loop system. Similar control systems could make it possible to increase production levels and to reduce risks in industrial situations in which temperatures must be strictly maintained - especially situations that involve aggressive or hazardous materials that exhibit safety-related, temperature-dependent properties. For example, in the photographic and other chemical industries, control of temperature is vital for manufacturing products and for safety of manufacturing processes; for another example, the ability to control temperature is a major concern for manufacturers of heating and cooling equipment. Overall, precise temperature-control systems like the present one can serve as valuable tools that will insure both production and safety in affected industries, in the armed services, and in the U.S. space program.