A modular assembled copper-aluminum composite high-efficiency cooling and heating radiant panel unit and its manufacturing and installation method

Abstract

The invention relates to a copper-aluminum composite radiant panel unit for radiant heating or radiant cooling of tall and large space buildings and its manufacturing and installation methods. The exposed buffer isolation bushing tube fixes the radiant panel hoisting frame and thermal insulation material; the lower surface of the aluminum alloy metal panel is sprayed with a coating material with low reflection and improved emissivity; the connection between the radiant panel water pipes is made of a special sealed threaded quick-fit joint, which is safe and reliable construction Fast; there is heat insulation material on the back of the aluminum alloy heat conduction panel; the radiant plate is hoisted by a metal light strip steel and a special buckle fixed connection, fast installation, saving construction costs; the heat conduction pipe channel is formed by expanding and crimping the copper tube on the aluminum alloy heat conduction plate One-piece compound, large heat transfer area, low contact thermal resistance, no mechanical damage on the surface of the copper tube, interference contact heat conduction on the entire surface of the heat conduction panel and copper tube: compared with the common clamping process, the heat transfer efficiency is high and the heat conduction is stable, and the radiation capacity is improved .

Description

technical field [0001] The invention relates to a copper-aluminum composite modular assembly type copper-aluminum high-efficiency radiation unit device for radiant heating and radiative cooling. Background technique [0002] Radiant heating or cooling is used in tall building spaces, which is energy-saving, efficient, comfortable and safe, without noise and wind, and is widely used in various fields. [0003] Commonly used radiant panels are made of rolled steel plates. The radiant panel surface originated in Europe, and the specific gravity of iron is 7.85g / cm 3 , this method is still widely used in domestic projects, and the specific gravity of aluminum is 2.7g / cm 3 , Using aluminum alloy material radiant plate heat conduction substrate, the weight of the roof is greatly reduced, which can greatly reduce the load of the building roof, especially suitable for building construction. [0004] The thermal conductivity of copper is 401W / mK, aluminum is 237W / mK, iron is 80W / mK...

AI Technical Summary

Problems solved by technology

[0004] The thermal conductivity of copper is 401W / mK, aluminum is 237W / mK, iron is 80W / mK, and stainless steel is 16W / mK. Commonly used radiant panels are formed by rolling steel plates to make radiant panels, and stainless steel pipes are snapped inside. It is used in large quantities, but the thermal conductivity of stainless steel is very low, so the heat exchange efficiency is poor. For most of the current domestic energy-saving needs, the heat exchange radiation effect of low-temperature water supply is not ideal, and it does not meet the building energy-saving requirements.

[0005] The conventional radiant panel adopts steel profiled plate as the radiation carrier, and the stainless steel pipe is clamped between the steel plates, and the heat conduction radiation is fixed by mostly half-arc U-shaped clamping. Since the heat-conducting substrate of the calendered steel plate and the steel tube are elastic clamping, it is basically a partial surface. Contact, the contact area is less than 50%, the heat transfer surface is small, and the contact thermal resistance is high, so the heat transfer efficiency is low

[0006] Conventional ceiling radiant panels are installed with fixed channel steel on the ceiling, and ceiling radiant panels are hung with through-buckle screw rods. The longest standard specification of the screw rods is 3 meters. Due to the different installation heights, there is a lot of waste left over the connecting screw rods, which is a serious waste and high cost. , more installation man-hours, more accessories, increased material weight and overall installation cost

[0007] Conventional radiant panels are connected by welding, clamping, and threaded butt joints. The first type of welding requires a strict level of welding technology. It is difficult to guarantee the quality of welded joints for horizontal welding of pipelines at heights of 10 to 20 meters. At present, domestic construction is basically rare; Although the snap-on pipe fittings are convenient to connect and avoid welding troubles, special hydraulic pliers are used for snap-fitting, and the pipe fittings are sealed by the internal sealing ring. If one of the waterways fails to be crimped, the adjacent radiant plate unit is removed and the snap-fit ​​joints are repaired. Assembled joints, the scrap rate is high, and the water leakage rate increases after repairing. After the joint leaks during operation and the secondary crimping is invalid, it is more difficult to repair. If the factory building is rebuilt, it is difficult to dismantle and install the radiant panel for the second time; The connection is convenient and can be dismantled and used again, but the manufacturing and processing of the radiant plate is required to be precise. The welding of the wire head of the 3 to 6 meter radiant plate must be vertically welded with special tooling. Water leakage will occur in the sealing ring when connecting between the two parts, and the manufacturing cost, process and working hours will be greatly increased, so it is not suitable for mass production

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