How to reduce the risk of using copper casting heaters

How to reduce the risk of using copper casting heaters

Improper operation during the use of heaters can pose certain safety hazards. Below, the electric heating sink will briefly share with you how to reduce the risk of using cast copper heaters.

Firstly, regarding the allowable working conditions for copper casting heaters, including relative dryness greater than 95%. Non explosive and corrosive gases; The voltage should not exceed 1.1 times the rated value, and it should also be reliably grounded; Insulation resistance ≥ 1MQ provides a good foundation for the safe use of the heater. Secondly, the copper casting heater should be well positioned for flow, and the effective heating area should be partially immersed in liquid or metal, and it is strictly prohibited to burn it empty; Once scale or carbon deposits are found in the pipe body, they should be promptly removed and reused to avoid affecting heat dissipation and prolonging service life.

When heating fusible metals, solid nitrates, alkaline leaching, paraffin, etc., the operating voltage should be lowered first, and only after the medium melts can it be lowered to the rated voltage. When heating the atmosphere, the components should be evenly arranged and crossed to provide excellent heat dissipation conditions and allow the flowing atmosphere to be fully heated. The wiring part of the copper casting heater should be placed in an insulation layer to avoid contact with corrosive and explosive media moisture; The lead wire should be able to withstand the temperature and heating load of the wiring section in a durable manner; When tightening the wiring screws, excessive force should be avoided.

In summary, proper operating procedures are crucial in order to prevent damage to the equipment and ensure the normal functioning of the equipment. The above are the precautions for safe use of cast copper heaters. We hope everyone takes them seriously.

The lifespan of cast aluminum heaters depends on compatibility

Compatibility is of great significance in cast aluminum heaters, and the lifespan of cast aluminum heaters mainly depends on compatibility.

Firstly, discuss the effects of incompatibility between working fluids and materials. The incompatibility phenomenon commonly seen in cast aluminum heaters is the chemical reaction between the working fluid and the core or shell material, which produces non condensable gases. The gas is swept by steam flow to the end of the condensation section during the operation of the cast aluminum heater, accumulating and forming a gas plug, blocking a part of the steam space, reducing the effective condensation area, increasing the thermal resistance, and increasing the temperature difference of the cast aluminum heater, even causing the condensation section to be completely blocked and unable to work. The impact of non condensable gases on wire cast aluminum heaters is more severe, as mentioned earlier and will not be repeated. In gas controlled variable thermal conductivity cast aluminum heaters, the non condensable gas generated will cause the operating temperature of the cast aluminum heater to exceed the design value. Even if the product of the reaction is not gas, but solid and liquid, it can still affect the physical properties of the working fluid or the structure of the tube core, thereby deteriorating the performance of the cast aluminum heater.

The mechanisms that cause incompatibility are also diverse. Generally speaking, in medium and low temperature cast aluminum heaters, non condensable gases are often generated due to electrochemical processes, leading to performance degradation or failure. In high-temperature cast aluminum heaters, it is often due to the dissolution of the core or shell material in the working fluid, which causes damage to the core or corrosion perforation of the shell.

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