China Refrigeration

High Performance Tubes (Evaporator)

Wieland Thermal Solutions (Shanghai) Co., Ltd.
product brand:Wieland
Numéro de stand：W1F59
product specification:OD: 5/8", 3/4" and 1"
product category:Air Conditioning-Central air conditioning plants-
product introduction:High performance evaporating tubes are developed for the flooded evaporator applications & falling film evaporator of the chillers in air conditioning and refrigeration industry. Other clean service flooded evaporators such boiling of light hydrocarbons could benefit from the enhanced performance of the tubes. The Fish Scales like pattern and ditches are distributed uniformly on the enhanced surface of the tube while the circular channels formed under the fin surface. The special porous structure has provided many nucleate points which are required by flooded boiling. It has reduced the thickness of the liquid film between the bubbles and tube wall, thus has decreased the thermal resistance. Meanwhile, it can accelerate the circulation of liquid and bubbles in the fin root channels and cavity pockets due to the thermosiphon function which improves both internal and external convection. This circulation can also help to Remove impurities and reduce the scaling. In this special configuration, The refrigerant can boil more bubbles continuously at less superheat , the heat transfer coefficient for evaporating in this enhanced configuration is up to 30 times than plain tubes。 Furthermore, the inside heat transfer coefficient is also improved because of increased surface area and turbulation induced by helical ridges on the inside surface. High performance evaporator tubes can be used in the other field than chiller industry when there are need for enhance heat transfer process of the low temperature difference applications: such as the light hydrocarbons separation, Geothermal power, sea water cooled power station, residual heating and waste heating power recovery and water solution evaporation. In the falling film evaporator application, the high performance evaporating tube not only reduce the refrigerant charge more than 1/3, but also improved the chiller performance, the chiller operate more stable. Widely used high performance evaporating tube type includes Turbo-BII, Turbo-EHP, Turbo-EHP2, GEWA-B4,GEWA-B5 etc.