Can’t understand it? What is the relationship between voltage, current density, and slot temperature?
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This post was last edited by At first glance on 2015-9-23 at 14:08. Hello, fellow sailors. I’ve encountered a contradictory issue: In chlorine production cells, it makes sense that as the current density decreases, the temperature of the cell should also drop. At the same time, as the current density decreases, the voltage also decreases. So the question is, since the temperature of the cell drops, the voltage should increase, right? But in reality, the voltage decreases along with the current density, seemingly not being greatly affected by the drop in temperature. What is the relationship between these two factors? Why does this happen? I hope everyone can give me some advice. Thank you.
This post was last edited by Du Xiaoping on 2015-9-23 at 17:45. First, a point needs to be corrected: even if the current drops, the slot temperature does not necessarily decrease; the slot temperature can be controlled through the temperature of the brine and the alkali solution. Assuming the normal operating current is 14 KA and it has now dropped to 12 KA, the slot temperature should decrease. In this case, heating can be used to maintain the slot temperature at the level it was at 14 KA. The temperature dropped, but the current did not decrease; at this point the resistance of the solution increases, and the cell voltage has to rise. It’s necessary to distinguish the situations: what you said, that the slot voltage decreases as the current drops, is correct; this needs to be discussed separately from the previous cases.
Well, it does depend on the situation; when the current decreases, the slot temperature doesn’t necessarily drop as well. You’re absolutely right, thank you for explaining it to me.
In fact, these factors influence and restrict each other; sometimes it is not possible to consider the relationship between two of them in isolation, but rather a comprehensive analysis is needed to determine which factors had a dominant influence under the given circumstances. Moreover, the relationship between the two is not necessarily linear. It is recommended to read \"Production Technology of Alkali Production by Ion-Exchange Membrane Method\" compiled by Cheng Dianbin