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激光焊接可用来提升太阳能集热器的热传导效率

  有0人浏览   日期:2019-09-07

文章摘要: 常见的集热器有平板集热器、聚光集热器。下面,以广泛用于太阳能热水器的平板集热器为例,免费网站宣传平台的小编就和大家探讨一下焊接工艺对太阳能集热器热传导效率的影响。......

太阳能热水器、太阳灶、太阳能干燥器等许多利用太阳能的设备,很多人都见过用过,这些设备都有一个关键部分——集热器。

Solar water heaters, solar cookers, solar dryers and many other devices using solar energy, many people have seen and used, these devices have a key part - collector.

集热器的作用就是把分散的太阳辐射能聚集起来。常见的集热器有平板集热器、聚光集热器。下面,以广泛用于太阳能热水器的平板集热器为例,免费网站宣传平台的小编就和大家探讨一下焊接工艺对太阳能集热器热传导效率的影响。

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The collector's function is to gather dispersed solar radiation. Common collectors are flat plate collector and concentrator. Next, take the flat plate collector widely used in solar water heater as an example, the editor of the free website publicity platform will discuss the influence of welding process on the heat conduction efficiency of solar collector.

激光焊与超声波焊是目前太阳能集热器焊接主要采用的两种工艺。

Laser welding and ultrasonic welding are two main welding processes for solar collector at present.

超声波焊接是利用超声频率(超过16KHz)的机械振动能量,在加压条件下,使两个金属表面相互摩擦而形成分子层的渗合。接近于冷加工。

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Ultrasound welding is a kind of infiltration of molecule layers formed by friction between two metal surfaces under pressurized conditions using mechanical vibration energy of ultrasonic frequency (more than 16KHz). Close to cold working.

激光焊接是利用高能量的激光脉冲对材料进行微小区域内的局部加热。能量通过热传导向材料的内部扩散,将材料熔化后形成特定熔池以达到焊接的目的。属于热加工。

Laser welding uses high-energy laser pulses to heat materials locally in small areas. Energy diffuses through heat conduction to the interior of the material, and melts the material to form a specific molten pool to achieve the purpose of welding. It belongs to thermal processing.

激光焊接与超声波焊接相比,优势是不需要给所焊工件施加压力,因此工件整体变形小,最大限度地保护吸热涂层表面的完整度。

Compared with the ultrasonic welding, the advantage of laser welding is that it does not need to exert pressure on the welded workpiece, so the overall deformation of the workpiece is small and the surface integrity of the endothermic coating is protected to the greatest extent.

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焊接工艺对集热器热传导效率的影响

Effect of Welding Process on Heat Conduction Efficiency of Heat Collector

平板太阳能产品性能的好坏,最直接的判断方法是水箱的升温效率。水箱的升温效率受一系列因素影响,而吸热板是其中最主要的因素。利用激光焊接来进行太阳能集热器板芯流道与高选择性吸热涂层的焊接,在吸热涂层上间隔几毫米焊一个点,结合强度、吸热涂层的完整度高,从而使板芯具有更高的吸热效能。

The most direct way to judge the performance of flat panel solar products is the heating efficiency of water tank. The heating efficiency of water tank is affected by a series of factors, and the heat absorbing plate is the most important factor. Laser welding is used to weld the runner of solar collector plate core and high selective heat absorbing coating. A spot is welded several millimeters apart on the heat absorbing coating. The bonding strength and the integrity of the heat absorbing coating are high, so that the plate core has higher heat absorbing efficiency.

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如今,气候变暖问题日益严重,能源供应日渐紧张,高效开发和利用太阳能迫在眉睫。为适应太阳能集热器产业市场快速发展,许多厂家已经研发出各自的品牌光纤传输激光焊接机,更为先进的焊接工艺将进一步提升太阳能集热器的热传导效率。目前,这些光纤传输激光焊接机已经占领大部分的太阳能集热器焊接市场。光纤传输激光焊接机的快速发展,也带动了激光设备制冷行业的发展。

Nowadays, the problem of climate warming is becoming more and more serious, and energy supply is becoming increasingly tense. It is urgent to develop and utilize solar energy efficiently. In order to adapt to the rapid development of the solar collector industry market, many manufacturers have developed their own brand of optical fiber transmission laser welding machines. More advanced welding technology will further enhance the heat transfer efficiency of solar collectors. At present, these optical fiber transmission laser welding machines have occupied most of the solar collector welding market. The rapid development of optical fiber transmission laser welding machine has also led to the development of laser equipment refrigeration industry.

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