Air cooled evaporator performance, and the heat transfer process between the refrigerant, absorbing heat and being cooled.

In modern industrial refrigeration, extended cooling surface is one of the most common components. In terms of importance to the success of the installation, it takes at the level of compressors, condensers and control systems. While many software packages exist for the selection and rating of air-cooled, they are designed for specific geometry and manufacture their own ranges. Therefore, they are not always suitable for comparing the relative performance of the same manufacturer and others. Examination of industrial refrigeration contractors refers to the ability to successfully combine the key components of the plant in the form of functional cooling system to meet certain technical applications. Selection of additional surface air coolers can be a difficult issue, especially if the results of this goes beyond mere performance issues coils and extends to such factors as product quality, weight loss, the defrost frequency overall energy efficiency, noise pollution, hygiene, temperature and air flow uniformity within the facility, freezing time, the behavior of the load, and other similar performance results for the whole system. Not all of the advanced air-cooled surface geometry and layout optimally suited for all applications. For some, this may be the assertion is obvious and to some extent this is true. The statement does not apply to the basics, how to choose the fin spacing for freezing applications. Application makes the fact that in one particular plant may be necessary to use a wide range of cooler geometry and layouts to achieve an optimum combination of components suitable for applications.

This may mean mixing coil manufacturers within the same system. Marketing emphasis cooler manufacturers tend that their product offered covers a wide range of applications. This is true for those manufacturers who offer a wide range of geometry and construction materials. Those producers, who for one reason or another limit offer one or more of the very geometry of the coil can not cover a wider range of applications. This article will examine the prospects contractor when it comes to selecting the optimal extended surface air coolers for a wide range of applications.

A typical cooler air, which is the subject of this paper is to show in principle. It consists of a tube bundle mounted plate with ribs and the air is passed through the fin side, the refrigerant passes through the pipes. Tube pattern may be square or triangular, tube diameter, fin thickness, FIN design, the distance the tube center, the closure, the face velocity, coolant, coolant feed and the choice of material are variable. This article does not extend to matters turbulators in pipes or wavy edges, and will not be described any other fluid on the fin side, the moist air at atmospheric pressure.

Influence of coil geometry on the overall heat transfer (U-Value) period, the coil geometry, refers in this connection the picture tube and the distance between the center tube. Cooling coil layout refers to the way particular cooler particular ...