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Q. What is line tracing of reactors In Chemical Engineering? How is it done? What are its advantages? What is difficulity in Line Tracing?
Purpose of Heat TraceHeat trace provides a way to add heat to a pipe, vessel, tank, or equipment using a line of heat transfer fluid or anelectrically heated cable. For simplicity, we will limit our heat transfer fluid to steam and compare steam and electrictrace.Heat trace is primarily used to prevent freezing by keeping a liquid above 32 degrees (or whatever temperaturenecessary to keep the material flowing through the piping). Heat trace can be used to reduce viscosity of a fluid toallow for effective pumping. Heat trace may also be used to maintain a specific temperature for a material (processmaintain). Other uses of heat trace include compensation for heat loss, raising piping temperature to recover fromoutages, eliminate formation of liquids in gas or powder lines, and minimize the formation of solids in liquid pipes.As an example, cooling water lines usually have enough velocity to not freeze very often because there is enoughflow through the line to prevent freezing. Steam lines have high potential to freeze because the condensation doesnot move. In a hot water application, lines maybe need to be kept warm so water does not have to be reheated foruse in a process.Generally speaking, a freeze protection application is typically easier to engineer. A system to maintain a specifictemperature to support a process is more critical and requires more complex engineering.Knowing the function of the trace is critical when selecting the type of trace, heat trace monitoring methods, andthe control scenarios for the trace. Heat trace does not come in a one size fits all package. It is recommended thatyou consult with process designers and engineers that understand your process in order to size and design the heattrace system that is right for your needs.Heat Trace Control OptionsHeat trace control scenarios range from simple to complex based on the type of trace used and the processrequirements. Freeze protection for water lines may only require a single ambient temperature sensorwhere process-maintain applications will likely require a well-designed control scheme.Thank YouRuchiAskiitians Faculty
Thank YouRuchiAskiitians Faculty
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