akasa公司推出一款概念散热器,英文名称:‘bubble-pump’中文翻译为:"泡沫泵"或"气泡泵"。
在相关的中文报导中,对‘bubble-pump’如许描述:
Akasa最近准备推出一款外观奇特的新型CPU散热器REVO。这个散热器里使用了气泡泵原理,可以让CPU接触面上液体室里冷却液快速流动到散热鳍片上进行散热,之后再轮回回液体室里。而细小的鳍片大大增加了可散热面积,所配备的可调速散热风扇也转速可从600RPM到2200RPM之间调解。
Akasa的市场部主管对此产品非常有信心,他表示这个产品使用了业界领先的技术,预计将会为散热市场带来一场技术更新的革命,这也是散热器起名为REVO的理由。
百度词条采用的词条名称气泡泵如许描述:
气泡泵是靠热能驱动产生的蒸汽泡的升力在系统中产生流体流的热输送装置。
这类热输送装置是具备存放从升温到高温的热交换用轮回溶液和热交换用轮回溶液产生相变后的高温蒸汽的热交换轮回溶液存放容器。该容器设有溶液发送口和气液二相流体送入口,溶液发送口和气液二相流体送入口之间毗连轮回溶液输入管,该轮回溶液输入管包含毗连到上面所说的溶液发送口的溶液溶液发送管、贯通热交换轮回溶液存放容器内的容器内管及毗连于上面所说的气液二相流体送入口的气液二相流体送入管。在溶液发送管设置显热散热交换器,在气液二相流体送入管设置加热热交换器。轮回溶液输入管内的溶液,在显热散热交换器和加热热交换器的作用下产生密度差,当加热热交换器的热负荷增加时,溶液吸收热量产生气泡和蒸汽,上升到液体的界面上方,使容器内的压力增大,如许就可以不使用外部动力就可哄骗溶液进行轮回,朝任意的标的目的导热。
气泡泵就是真空容器中的溶液在外部发热物体作用下产生气泡,气泡上升到液体界面上方,使系统产生压力,使在显热散热交换器和加热热交换器的作用下产生密度差的溶液在不使用外部动力就可哄骗溶液进行轮回朝任意的标的目的导热。
在akasa公司的产品说明文件中,对“气泡泵”有着如许的描述:
“Revo is a totally new class of CPU cooler powered by ‘bubble-pump’ technology.Revo has been developed by Akasa (Europe). At the heart of the cooler is SilentFlux? a technology developed in Denmark. SilentFlux? utilises a unique dual-component coolant to drive the bubble pump. This product and its patented technology is unique to Akasa.
Revo marks a revolution in the development of Silent CPU cooling: it is quieter and more efficient than heatpipe coolers, significantly cooler than conventional heatsinks and easier to fit (and safer) than watercoolers.
Revo does not use a conventional heatsink. At the heart of this technology is a ‘bubble pump’ (no moving parts, dual component fluid) which silently shifts heat instantly to an aluminium eight port radiator with approximately 1200cm sq. of profiled fine fins that rapidly dissipates heat. Due to the high thermal efficiency the fan can operate at low speeds, effectively eliminating fan noise. ”
意见剖析:
"泡沫泵"也好"气泡泵"也罢,终究没有离开无源驱动散热这个范畴,"泵"在这里也只是个形容词,或更准确的说,名词只是为了躲避专利追究而已。
我们回顾一下热管界对其工作原理的描述:
其一:脉动热管的布局和工作原理
脉动热管是上世纪90年月出现的一种新型热管,其概念最初由日本人Akachi提出,基本形式有两种Looped PHP和Unlooped PHP,如下图所示。脉动热管的管径很小(内径一般在0.5~3mm),内部抽成真空,充注一部分工作液体,工作液体在表面拉力的作用下在管内形发展度不一的液柱和气塞,充人管内的工作液体的体积与脉动热管的内容积之比称为充灌率FR。脉动热管中等用的工质有水、甲醇、乙醇、氟里昂等。
(a) Looped PHP (b )Unlooped PHP
图 示 脉动热管的两种基本形式
脉动热管工作时加热段和冷却段分别在管段两头,一般情况下,加热段在下部,冷却段在上部,中部为绝热段,绝热段可省略。对于图1中的两种形式,从其布局上可以看出Looped PHP整个管路形成封闭环路,工作液体能在其中轮回流动,而PHP的管路则是断开的,工作液体不能轮回流动,目前在研究和应用中所涉及到的多是Looped PHP,本文也主要对Looped PHP进行讨论。
其工作原理是:脉动热管管内的液柱和气塞在加热段被加热膨胀,同时因沸腾产生的大量气泡推动液柱和气塞从加热段向冷却段运动,液柱和气塞在冷却段被冷却,如许形成气塞与液柱在加热段与冷却段之间的运动,使成为事实热量的传递。。。。
其二:回路热管的布局和工作原理
回路热管(Loop Heat Pipe,LHP)是由俄罗斯科学家Yu.F.Maidanik教授所发明的一种导热装置。它哄骗蒸发器内的毛细芯产生的毛细力驱动回路运行,哄骗工质的蒸发和冷凝来传递热量,因此能够在小温差、长距离的情况下传递大量的热量,是一种高效的两相导热装置。
图示 回路热管的示意图
回路热管由蒸发器、蒸汽段、冷凝器、回流段、补偿室五个部分组成,如图?所示。其中,在蒸发器内部有一组毛细布局(Wick Structure)。在蒸发器内壁或毛细布局上有许多蒸汽槽道,如图?的A-A截面所示。其基本的工作原理是:毛细布局本身可以将液态往上吸,使患上毛细布局充满工质液体,而当蒸发器被加热时,毛细布局也被加热,毛细布局中的液体便会蒸发成气体,并通过蒸汽槽道沿着蒸汽段到冷凝段,同时带走了热量;而在冷凝段中,气体被冷凝成了液体,开释出潜热;而毛细布局的毛细力再使液体沿着回流段回流到补偿室,并达到毛细布局。云云形成了一个工质的流动轮回和热量传递历程。补偿室的作用主要是启动的时候容纳在蒸汽段和冷凝段的液体,并且在运行时防止液体来不及回流造成蒸发器干涸。
回路热管试验产品
综上所述,‘bubble-pump’实际上还是heat pipe 的一种,通称为“热管”只不过冠一个更有卖点的名字而已,有关“回路热管”及“脉动热管”的技术文章,读者可以到晨怡热管网站:http://china-heatpipe.net进行网站关键词搜索,信赖会对您有所帮助!
无须质疑,akasa公司的热管散热器,样子做患上还是非常标致的。。。。
07年下半年,Akasa推出的REVO,一个宣称为十分革命性的散热器。
TechPowerUp曾经做出一份相当详细的评测。
可惜可能由于REVO仍然出于开发阶段的原因,TechPowerUp并没有给这款散热器大好的评价。主要的问题是和CPU接触的表面的打磨十分差,和同价位的散热器有一定距离。TPU给出的评语是:
优点:
1.轻量
2.容易安装
3.最少比原装散热器效果好
错误谬误
1.CPU接触面没有经过打磨
2.风扇全速时候噪音较大
3.和同价位的散热器相比散热性能较差
4.贵
估计这主要是由于REVO不是正式产品的原因,诸多的不完美影响了散热器的表现。以下是来自TPU完整对气泡泵的测评:
Packaging & Contents
The Akasa Revo comes in a rather large box for a 92mm-based cooler. However, it is colorful and provides sufficient information about the features and specifications in multiple languages.
Inside the colorful outside box is another box which contains the components. Everything is separated into individual compartments, and the cooler is held in place with a cardboard insert.
There is not a lot of components in the kit, but as you will see later they are all that are needed. There is an installation manual written in multiple
A Closer Look
The Akasa Revo is a bit of an unusual looking cooler. It looks like an "all-in-one" compact watercooling kit, but it is a bit different than that. In a sense, it uses bubbles to move the internal coolant around the loop instead of a mechanical pump. Here is the information straight from Akasa:
Heat is absorbed from the CPU into a chamber which stores a specially designed dual-component liquid-coolant.
From the CPU chamber heat moves to the radiator along the up-pipe of a hermetically sealed circuit. The specially designed dual-component liquid-coolant acts as a bubble pump to force the heat rapidly to the radiator.
Heat is dispersed from the radiator by a 92mm fan rotating at low speed.
The dual-component coolant is cooled by the airflow from the fan and returns along the down-pipe of the hermetically sealed circuit to the chamber for another round.
The Revo features an all aluminum structure, which consists of a base, supply tube, radiator and return tube. There is a clear plastic cover over the radiator and a black bracket on top of the base that will aid in the installation process.
The fan used is a 92mm model with a clear frame and transparent blue fins. This is a PWM style fan, so it comes complete with a 4-pin connector for use with motherboards that support this feature.
The clear plastic cover for the radiator makes the radiator look nice but it also helps to hold the fan in place. There are clips at each corner which hold the fan, as well as some tabs that tighten up the mounting and reduce vibrations. Also, in the left picture the fill port for the system can be seen more clearly. This has been sealed after filling, and it is highly recommended that this should not be tampered with.
The Revo we received was one of the initial production units, so there are some things to keep in mind while discussing the base. In the picture on the left there are some small circular marks and some darker spots around them. According to Akasa, the circular marks on the base are from the assembly process, but note that these marks are outside of the CPU contact area. The darker areas around the circular marks appear to be some residue left from the testing process. Akasa had tested each one of these early production models individually to make sure they were performing correctly. Unfortunately, the unit we received was not cleaned completely before being shipped to us. Akasa has assured us that all of the retail units will be thoroughly cleaned before packaging and shipping. Although not polished or shiny, the base does feel fairly smooth. With the razor blade test it was difficult to see exactly how flat the base was, because the edges were raised higher than the center. Again, the edges are far away from the area that will make contact to the cpu, so they should not have any effect on performance.
Installation
To install the Akasa Revo the motherboard tray was removed from the case to make sure there was ample room around the CPU socket. The CPU heatspreader was thoroughly cleaned to remove all traces of the former thermal compound. Akasa recommends for best performance that the Revo be installed with the radiator on top. The cooler will also work with the radiator on the right side, but not with the radiator on the bottom or the left. This should be kept in mind when positioning the mounting bracket to allow enough room for assembly. The mounting bracket for LGA775 boards was used and installed in the same manner as a stock heatsink would be, by inserting the four push-pins and pressing down until they clicked into place. Then the two clips were lifted up to allow the heatsink to be installed.
Using the included thermal compound, a small thin line was placed across the core area, since this is the application method we will be using later with Arctic Silver 5. The wire clips on the mounting bracket were placed over the base of the Revo, and the cooler was lifted up and centered on the base while moving the clips down. With the base nestled inside the opening of the black mounting frame, the metal clips were secured by pushing them down and sliding them under two tabs on each side of the bracket.
The Revo was removed immediately to check the contact area. The thermal compound had spread enough to cover the core area, but due to the thickness of the compound it was harder to get as thin of a line as with the Arctic Silver compound. If using the stock compound, it would probably be better to apply it in a thin, even layer.
The compound was cleaned off and Arctic Silver 5 was applied, then the Revo was reinstalled. The 4-pin connector for the fan was placed onto the header of the motherboard. There was no interference around the CPU sockt, and the Revo was high enough to clear the memory and the chipset heatsink.
Even when installed in the case there are no clearance issues. The Lian Li PC-A10 has the power supply located at he bottom of the case, which puts the motherboard right up against the top of the case. With the Revo there is still plenty of room to clear the 120mm fan located in the top.
Performance
The system being used to test the heatsink is as follows:
CPU:
Intel E6850 Core2 Duo
Clock speed:
9 x 333 MHz = 3.0 GHz, Memory at DDR2-667
Motherboard:
Asus P5W DH Deluxe
Memory:
2 x 1GB G.Skill F2-6400CL4D-2GBHK
Video Card:
Sapphire HD 2900XT PCI-e
Hard disks:
3 x 36GB WD Raptor drives in raid 5
Maxtor 200GB PATA drive
Power Supply:
ThermalTake ToughPower 750W
Case:
Lian Li PC-A10B
Software:
Windows XP Pro SP2, Catalyst 7.10The motherboard fan speed control (ASUS Q-fan Control) was disabled in the BIOS, and the fan was run at full speed. Ambient temperature was kept to 22° Celsius (+/- 1 degree) and was measured by a standard mercury thermometer.
At stock CPU speeds the Revo cools marginally better than the stock Intel heatsink, but only under load. Considering the Revo is not meant to be a performance cooler, but instead a quiet one, performance seems adequate.
However, most of our readers want to know how the heatsinks we review will work on an overclocked system, so the Revo was tested with the CPUoverclocked to 3.6 GHz at 1.45V. Again, the Revo does better than the stock Intel heatsink, this time beating it by 4°C.
Fan Noise
To measure fan noise we used an IEC Type 2 sound level meter on the dbA setting. Measuring distance was 10 cm from the heatsink fan hub. The short distance of 10 cm is necessary to get proper readings with very silent fans. All fans were tested outside of the case at 12V supplied by a lab PSU. On fans that come with a fan controller or allow control of fan speed in any other way, "low" and "high" indicate the settings on the fan controller. For fans that use a PWM style connector, "Full Speed" is with the fan connected to the lab power supply; "PWM Mode" is with the fan installed in the system without any case fans running, no optical drives connected and with a passively cooled Gigabyte n6200-TC video card installed.
With the fan from the Revo running at full speed it is louder than the stock Intel heatsink. However, when the heatsink is ran off the PWM header and the motherboard is allowed to adjust the fan speed, the Revo becomes one of the quietest coolers in the test group. With the fan spinning at only 480 RPM, the Revo comes in at 44 dB.
Value and Conclusion
The Akasa Revo sells for about 55.00 Euros or about $79 US Dollars.
Lightweight
Easy to install
Fan is "whisper quiet" when in PWM mode
Performance better than the stock heatsink
Expensive
Poor finish on the heatsink base
Performance is not as good as other similarly priced heatsinks
7.8
The Akasa Revo is a unique approach to CPU cooling. As an avid user of watercooling I like the idea of a non-mechanically pumped watercooler. When running the fan in PWM mode as it is intended, the fan is very quiet and ran at only 480 RPM. On top of that, the Revo was pretty easy to work with since it is lightweight and easy to install.
However, the condition of the base was disappointing, and the performance was only marginally better than the stock Intel heatsink. I had seen reviews of preproduction Revos with mirror finish bases, and they seemed to perform better, too. Add to all this the Revo's high price, and it makes it hard to recommend the Revo.
Overall the design of the Revo is interesting, but for about the same price users can purchase a high-end air cooler or a low-end watercooler and get better performance.
╭(╯3╰)╮找上海废水提升泵厂家，请找上海龙亚废水提升泵厂。欢迎咨询：O2l-6l557O88 或 02l-6l557288。(⊙o⊙)…