In order to get continuous hot water in target temperature, NTC temp sensors & water pump & electric control system are required to work with TF Heater Element.
We make this Electric Testing Kit as Mini Electric Hot Water Dispenser Prototype, which can be set to supply target temperature hot water or water volume in each single heating process.
We also add a preheating water tank.
It'll help customers to understand how thick film heater works and to learn more thick film heater applications in new model R&D.
The Electric Thick Film Instant Heating Testing Kit is assembled by Thick Film Heater Element, DC Membrane Pump, PCB control system, LCD Display, Touch Buttons etc.
Target Temperature: 60℃, 70℃, 80℃, 90℃ and 100℃
Volume in single heat process: 150ml, 500ml and 1000ml
Test Kit With Water Tank,Test Kit ,Aquarium Water Test Kit,Hard Water Test Kit XINXIANG JIEDA PRECISION ELECTRONICS CO.,LTD , https://www.tubularheater.de
Instant Heating Test Kit with Preheating Water Tank
Method of charging minerals in electric field
In the electrification process, the method of charging the ore particles is usually triboelectric charging, inductive charging, contact charging, charging in a corona electric field, and charging in a composite electric field.
(1) Frictional charging The mineral particles of different properties are charged with different symbols due to mutual friction or friction with the surface of the feed transport equipment. The sign of the charge obtained upon rubbing depends mainly on the nature of the ore, the material of the feed transport equipment, and the like. Therefore, it is possible that a certain ore is positively charged under one condition and negatively charged under another condition, for example, sulfur is negatively charged when it is in contact with quartz or salt, and positively charged when it is in contact with selenium .
(2) Inductive charging, such as the conductor ore moving closer to the electrode, due to the action of the electrode electric field on the free electrons in the conductor, the end of the conductor ore near the electrode produces an opposite charge to the electrode symbol, and the end away from the electrode produces the same charge as the electrode symbol. . If the ore particles are removed from the electric field, the two opposite charges cancel each other out, and the ore particles are not charged, and this charge becomes an induced charge. The induced charge can be removed by grounding or the like. The non-conducting ore particles can only be polarized in the electric field, and the electrons and nuclei in the non-conductor molecules are closely combined, and the electrons are in a bound state. When the non-conductor approaches the electrode, only the microscopic relative movement between the electrons in the non-conductor molecule and the nucleus forms an "electric dipole". These electric dipoles are arranged roughly in the direction of the electric field (called the orientation of the electric dipole), so positive and negative charges appear on the two surfaces perpendicular to the non-conductor and the external electric field, and the number of positive and negative charges is equal. But can't leave the original molecule, so it is called "binding charge." The movement of charge in a non-conductor within an electric field (or the orientation of an electric dipole) is called polarization. Bound different charge and induced charge can not be separated from each other, grounding or the like can not be removed, which north and south poles of the magnet similar phenomenon can not be separated.
(3) Contact charging When the ore particles are in direct contact with the electrodes, the conductive particles will carry the same charge as the electrode symbols. A poorly conductive mineral can only be polarized, producing a bound charge on its surface. Near the end of the electrode, the polarity of the charge is opposite to the polarity of the electrode; away from the end of the electrode, the polarity of the charge is the same as the polarity of the electrode.
(4) when the corona charging electric field radius of curvature differ by two plus a sufficiently high voltage between the electrodes large, small radius of curvature electrode (e.g. metal wire) the electric field strength near the electrodes will greatly exceed The electric field strength of the remaining space. The air in the vicinity of the electrode will collide and ionize, generating electrons and positive ions, and electrons attached to the neutral molecules to form negative ions. Electrons, positive and negative ions move to oppositely opposite electrodes, thus forming a current (called corona current), which produces a weak click and is seen near an electrode with a small radius of curvature (called a corona electrode). To the light purple glow, this phenomenon is called corona discharge. If a corona discharge is generated in the air, air is observed to flow to the surrounding space near the tip end of the corona electrode, a phenomenon called electric wind. A special ozone smell can often be heard during corona discharge.
Since the distance from the corona electrode is slightly farther, the electric field strength is much weakened, so the corona discharge cannot develop to the entire space between the electrodes, only in a thin layer near the corona electrode. This thin layer is called corona. Area. The area outside the corona zone is called the corona outer zone, so corona discharge can be seen as an incomplete breakdown of the s gas.
A stable corona can only exist in a non-uniform electric field. In a uniform electric field, as long as the voltage rises to a certain extent, impact ionization may occur at any place between the electrodes, and a spark discharge or even an arc discharge may occur. The electrode voltage at the time of corona appears as the corona onset voltage, and the corona onset voltage depends on the shape of the electrode, the distance between the electrodes, the nature of the gas, and the like.
(5) Charged in the composite electric field The ore particles are charged in the composite electric field, and are actually charged under the combined action of the combination of the corona electric field and the electrostatic field. The conductor ore particles obtain electric charge in the corona electric field. As long as the corona electric field is offset by some distance, due to its good electrical conductivity, almost all of the obtained electric charge is transmitted through the grounding electrode or there is little remaining electric charge, and at the same time, it is subjected to one. The strong high-voltage electrostatic field acts as an induced charge. Because of its large resistance, the charge can neither pass through the ground electrode nor flow along the surface, so it is repelled by the static electrode electric field and adheres to the ground electrode.