Evaporators & Liquid circulated air coolers PBZZ - Fincoil - #1

Text version of the page

Untitled table.main {} tr.row {} td.cell {} div.block {} div.paragraph {} .font0 { font:14.00pt "Arial Black", sans-serif; } .font1 { font:9.00pt "Palatino Linotype", serif; } .font2 { font:10.00pt "Palatino Linotype", serif; } Polar Bear ZZ Air Cooler Application The air coolers of the Polar Bear ZZ séries are intended for operat-ing as the air coolers of air cooling Systems using ammonia.The equip-ment is also suitable for other ré­frigérants and heat transfer solu­tions. The models in the séries are designed to cover the différent uses in product storaging and manufacturing processes. Heat Transfer Section The heat transfer section is a hot-dip galvanised steel Al élément. It has a tube size of 20 mm that is favourable for wet evapora-tion, and its staggered tube spacing (57,74*50 mm) guarantees a good heat transfer factor. Depending on the opération objective, you have a sélection of six différent fin spac-ings between 6 and 18 mm and additional multi-fin spacings. The coil, with its headers, has been hot-dip galvanised as a one unit. The thickness of the zinc layer is 60 - 80 |im. The equipment's tubing System is standard for wet evaporation use of a pump or gravity flow Systems. To spécial order, the piping can be made to suit the direct evaporation use of ammonia (Dx) or other ré­frigérants and solutions. The heat transfer section is pres-sure-tested with pressure, specified by the pressure vessel classification, in water. Casing In the basic model, the casing is hot-dip galvanised steel. Alternative casing materials include powder painted, hot-dip galvanised steel (standard colour white RAL 9010) and stainless steel. The material for the heat plate of the hot gas de-frosting is aluminium. The two-fold drip tray is equipped with hinges, and the intermediate space is insulated throughly with cellular plastic. The materials of the screws and clips have been selected to achieve the best possible corrosion prévention. In the installation of