How to improve the thermal performance of the cooler?
When selecting an equipment, every user wants to make the equipment work better, and plate coolers do the same. How to improve its thermal performance has become a high-profile work for every user. Let's take a look at how to improve the thermal efficiency of the plate cooler.
First, when the air flow passes through the plate cooler, the relative humidity of the air is reduced because the water vapor in the air is continuously deposited on the surface of the plate tube, and the amount of frost on the surface of the coiled tube surface gradually decreases along the flow direction, so the front of the evaporator The frost on several rows of pipes is more serious, and the frost on the rear rows of pipes is relatively lighter.
Second, it is possible to adopt a variable-pitch plate structure so that the distance between the plates along the wind direction is getting smaller and smaller, and the high heat transfer efficiency can be maintained under the frosting condition, and the time of the frosting can be prolonged.
Thirdly, after the plate cooler adopts the variable-pitch plate structure, when the air is longitudinally swept along the staggered plate, the staggered distribution of the plates makes the upstream plate flow around the downstream
plate and strengthens the change of the first half of the plate. The heat capacity, the distribution of the back panel makes the flow channel narrower, and the flow rate increases, so that the heat transfer in the latter half of the plate is also strengthened.
Fourth, the improved variable-pitch plate cooler is actually a staggered plate structure. When the fluid sweeps the plate, the air flow is disturbed firstly in the upstream plate, and the heat exchange capacity of the plates in the
first several rows is strengthened. .
Fifth. When the air flow passes through the rear rows of pipes, the improved set of plates adds a narrow slice of the flow and the flow rate increases. The fluid is further squeezed on the original foundation and the disturbance is
more severe. The heat transfer capability has been enhanced.