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Which heat exchanger to choose for seawater source heat pump heating and air conditioning system?
Source: Time: 2020-12-26 11:56:21 Hit:
Seawater energy can be said to account for a high proportion of undeveloped energy in the world. One is that the previous technological level is not up to the ability to develop it, and the other is actually determined by the medium of the seawater itself. Let’s take a practical example to illustrate , Tianjin Port 30w ton oil terminal office building decided to use seawater source heat pump heating and air conditioning system because of the characteristics of energy saving, environmental protection and stable operation of seawater source heat pump, but there are two problems that need to be solved urgently.One is the corrosiveness of seawater and the problem of marine organism adhesion, which is the medium problem of the seawater itself mentioned above, and the other is that the technical level cannot be reached. These two problems can actually be combined and analyzed.
The corrosiveness of seawater and the problem of seawater biological adhesion are actually the main reasons why seawater energy has not been developed in large quantities. Before the development of plate heat exchangers, shell-and-tube heat exchangers were common heat exchange equipment in seawater projects. The advantage is that the flow channel is wide and the time of seawater biological attachment will cause blockage. The disadvantage is that the area is large and the heat exchange efficiency is low. In contrast, the high heat exchange efficiency of the plate heat exchanger is because the depth of the flow channel is easy to form turbulence. , The area is small, but the problem lies in the depth of the general plate-shaped groove for the attachment of seawater organisms, the impurity in the seawater cannot pass through and the corrosion problem of the seawater
Our engineers chose titanium material and wide flow channel plate type, and they have been used in seawater conditions. The corrosion resistance is relatively good, but the price of corrosion-resistant material like titanium is much more expensive. The company may not accept it. For the price, choose the type of heat exchanger with low heat exchange efficiency, but in the long run, the operating cost of the heat exchanger with low heat exchange efficiency accounts for a larger proportion of the total cost than the purchase cost, so the plate heat exchanger is your best Best choice.
The seawater source heat pump heating and air conditioning system heat exchanger type chooses the plate heat exchanger, and the problem is solved.
