The water tanks of air source heat pump water heaters

The water tank in air source heat pump water heater is core part,the inner ladder is key technic to water tank water tank is very important to air source heat pump water heater, not only affects the operation of air source heat pump water heater.more important is to determine the longevity of air source heat pump water heater.

Three materials: no one is perfect.
The water tanks of air souce heat pump water heaters, there are three major categories accroding to material and technic: stainless steel inner ladder, enamel inner ladder, crystal inner ladder.

1. Stainless steel liner is a second-generation water tank to replace the galvanized sheet, view the current industry industry conditions, the longest period of time on the market, the most group used, and chosen by most clients. SUS304 stainless steel is the best stainless steel liner material, anti-corrosive, is the choice of most manufacturers.

The biggest technical difficulty of the stainless steel liner is the corrosion and crack problems based on Welding position, the original corrosion resistance will be lost when stainless steel plate welding under high temperature.The stainless steel liner have to bear the working pressure when being used, coupled with the impact of heating expand and cooling contract, leakage is never avoid.Rusting and leakage phenomenon have occurred, serious affect the development of air source heat pump water heater.

2. The enamel interior is the third-generation after stainless steel,its unique advantages: Pressure resistance, strain resistance, acid resistance, alkali resistance, High temperature resistance, water vapor ressitance, non-polluting.

Of course, the enamel liner is not the perfect choice,huge weight,difficult to transfer. Once there is broken enamel. It is difficult to find out, liner ladder rust immediately damage the quality of the water tank.

3. The third type water tank products is crystal interior. Crystal Liner is similar to the enamel interior, which is also called "slush liner. Crystal interior is also in the plate "Boring" on a layer of material. This material similar to the plastic or resin material, and thus be able to successful isolation from the plate and water, to prevent the steel plate rust corroded.

Crystal inner is almost the same performance with enamel interior, but better than enamel interior, lighter than enamel,not so vulnerable, easy to transport and water storage tanks more bigger. At the same time, crystal interior not affected by thermal expansion and contraction of the impact will not lead to crack and leaking, it will not affect the thermal conductivity and water quality due to scaling.

But doubt have never been stopped within the crystal inner material is easy to fall off, and material aging cause water to smell ", technical questions of crystal inner need to be solved and proven.

Although the tank water is so important to air source heat pump water, but the whole market focus on the the development of main unit. Stainless steel, enamel interior crystal liner, there is a long time for their development.

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