关于加热棒的使用心得

On the use of a heating rod

现在的加热棒都是控温加热棒，主要分三类：

The heating rods are temperature controlled heating rods, which are mainly divided into three categories:

一、双金属片控温加热棒

A, bimetallic heat control bar

就是我们最常用的加热棒，这是我们今天要讨论的重点。它是在热棒内部放置双金属片作为开关，利用双金属片的两面材料的不同，使金属片可以根据温度变化摆动，最终到设定温度时断开连接达到断电的目的。

This is the most commonly used heating rod, which is the focus we are going to discuss today. It is a switch in which two metal pieces are placed inside the hot rod, and the two sides of the two metal pieces are used to make the metal sheet wobble according to the temperature change, and the end of the wire is broken at the time of setting the temperature.

二、热敏电阻探测温度式加热棒

Two, thermistor detection temperature type heating rod

这是外控加热棒通常采取的工作原理。因为采取了热敏材料，对温度感应更加敏感，对温度的控制更加有效。

This is the usual working principle of the external heating rod. Because the thermal sensitive material is adopted, it is more sensitive to temperature induction, and the temperature control is more effective.

三、纳米加热片

Three, nanoscale heating sheet

貌似是市场上的新宠，主要被厂家以100瓦电=1000瓦热量给吸引了，在本文正题开始之前，本人先撕下这种伪科学虚伪的面纱。不懂科学没关系，假如100瓦电能发出1000瓦热量，我再把这1000瓦热量转化成1000瓦电，再用这个加热片，我将获得10000瓦热量，如此循环下去……不得不说，地球上不再需要能源了。有点物理常识的都知道能量守恒定律，所以这种产品无疑进行了虚假宣传，知情者应向有关机关报案，依法处置。

It seems to be the new favorite in the market, mainly by the manufacturer with 100 watts of =1000 watts of heat to attract, before the beginning of this article, I first tore this false false false face veil. Do not understand science, if 100 watts of electricity can send 1000 watts of heat, I will turn the 1000 watts of heat into 1000 watts of electricity, then this heating piece, I will get 10000 watts of heat, so circulate... It has to be said that energy is no longer needed on the earth. A little common sense of physics knows the law of conservation of energy, so this product has undoubtedly carried out false propaganda, and the informed person should report to the authorities concerned and deal with it according to law.

另外，关于纳米加热片也并非一无是处，符合科学的卖点就是不发光便发热，热效率比前两种都要高一些。

In addition, the nano heating film is not without merit, and the scientific selling point is that it will generate heat without lighting, and the thermal efficiency is higher than the first two kinds.

那究竟能高出多少呢？我们知道，电流经过电阻发热，当电阻热到一定程度到达发光的时候，电流产生的能量除了热量还有光能，光能中大部分会逸散到空气当中。我们不防观察一下我们的加热棒，1000瓦的加热棒的电阻丝的亮度，能不能达到1瓦的灯的亮度？显然不能！即使等于1瓦的亮度，那么纳米加热片也不过将热效率提高了千分之一而已。

How much can that be higher? We know that the current is heated by resistance, and when the resistance is heated to a certain degree of light, the energy produced by the current is in addition to the heat and the light energy, and most of the light energy will escape into the air. We do not want to observe the brightness of our heating rod, the resistance wire of 1000 watts heating rod, can we reach the brightness of 1 watts? Obviously not! Even if the brightness is equal to 1 watts, the heating efficiency of nanomaterials will only increase by 1/1000.