Flow Heater Tube Arrangement With Flush Thermal Contact
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Solution Overview
Problem
Conventional flow heaters face limitations in heat transfer efficiency, leading to high outer temperatures and potential melting, and risk of tubular heating body damage due to direct contact with fluids, especially with corrosive media or under high surface loads and low flow velocities.
Innovation Solution
A compact flow heater design featuring a tubular heating body with a metal jacket and a surrounding tube arrangement that maintains flush contact through a heat transport tube with higher thermal conductivity, elasticity, and deformability, ensuring effective heat transfer without direct fluid contact and allowing for modular assembly and easy maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If tubular heating bodies of ever-increasing performance are used, then heating performance is improved, but outer temperature becomes unacceptably high and metal section may melt
Solution Approach 1:
A metal jacket is introduced as an intermediary layer between the tubular heating body and the surrounding metal section. The metal jacket has higher thermal conductivity than the surrounding metal section, allowing it to efficiently conduct heat away from the heating body and distribute it to the surrounding structure, thereby preventing localized overheating and melting of the metal section while maintaining high heating performance
Solution Approach 2:
The patent changes the thermal conductivity parameter by selecting a metal jacket material with higher thermal conductivity than the surrounding metal section. This parameter change enables the jacket to act as an effective heat spreader, conducting heat away from the heating body and distributing it across a larger area, thus reducing peak temperatures and preventing melting
2Productivity
If tubular heating body is arranged in direct contact with fluid to be heated, then heat transfer efficiency is improved, but risk of damage from corrosive media, calcifications, and bubbling increases
Solution Approach 1:
The metal jacket serves as a protective intermediary between the tubular heating body and the fluid to be heated. It maintains thermal coupling for efficient heat transfer while physically protecting the heating body from direct contact with corrosive media, calcification deposits, and bubbling forces, thereby significantly reducing the risk of damage and improving reliability
3Volume of moving object
If flow heater is designed to be compact, then space utilization is improved, but heat transfer efficiency may be compromised
Solution Approach 1:
The tubular heating body is nested within the metal jacket, which in turn is surrounded by the metal section. This nested arrangement allows multiple functional layers to be integrated in a compact configuration, maintaining efficient heat transfer pathways while minimizing the overall volume and achieving a space-efficient design
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The design achieves efficient heat transfer while protecting the tubular heating body from fluid contact, preventing damage and ensuring reliable operation under high performance conditions, with improved thermal contact and reduced risk of contamination.
Implementation Method 1
The heat transport tube may be formed of a material that has a higher coefficient of thermal conduction than a material of the metal jacket
Implementation Method 2
The wall sections that face the heater are in flush contact with sections of this outer contour
Data Source
AI summary
A flow heater (100, 200, 300, 400, 500) with a tube arrangement including at least one tube (105, 106, 205, 206, 305, 306, 404, 405, 406) for passing through a fluid to be heated or a plurality of fluids to be heated, and with a heater with a metal jacket, especially with a tubular heating body (102, 202, 302, 402, 502), in which the tubes (105, 106, 205, 206, 304, 305, 306, 404, 405, 406, 505) surround the heater. At least in partial areas of the heater, wall sections (113, 114, 213, 214, 311, 312, 313, 411, 412, 413, 513) of the tube arrangement (105, 106, 205, 206, 304, 305, 306, 404, 405, 406), which wall sections face the heater, are adapted to an outer contour of the heater, which heater may or may not include a heat transport tube (117, 317, 517), so that the wall sections are in flush contact with sections of this outer contour. The tube arrangement (105, 106, 205, 206, 304, 305, 306, 404, 405, 406, 505) is connected together and/or with the heater by a connection device. A process for manufacturing such a flow heater is also provided.