Knowledge Of Plate heat exchange

           The emergence of welded plate heat exchanger provides a new option for users of traditional tubular heat exchangers, whose biggest advantage is to have a high heat exchange efficiency of plate heat exchanger and high temperature and pressure resistance of tube heat exchanger. Compared with the tube heat exchanger, welded plate heat exchanger can provide users with more economical and more space-saving products.           Hofmann’s welding plate heat exchanger products uses similar corrugated plate structure of plate heat exchanger, at the same time uses more advanced metal welding process sealing, non-rubber gasket design, a variety of metals and alloys, which make the product suitable from -50 ℃ to 500 ℃, up to 4.0MPa working pressure of most heat transfer conditions. It can be applied to liquid, gas, steam and two-phase mixed fluids, including highly corrosive media, organic solvents, and conditions ...

Vertical shell and tube condenser The main features of the vertical condenser are: 1)     Due to the high cooling flow and flow rate, the heat transfer coefficient is high, generally about K = 600 ~ 700 (kcal / m2? H? ℃ ). 2)     Vertical installation covers small areas, and can be installed outdoors. 3)     Cooling water flow directly and have high flow rate, so not need high water quality, the general water can be used as cooling water. 4)     Scales in pipe can be easy removed, and do not have to stop the refrigeration system work. 5)     But in the vertical condenser, the rise temperature of cooling water is generally only 2 ~ 4 ℃ , logarithmic average temperature difference is generally about 5 ~ 6 ℃ , so need much water. And because the equipment is placed in the air, the tube is susceptible to corrosion and is easier to find its leaking. Shower type condenser ...

Hofmann Under normal operating conditions, the more options are symmetrical flow path plate heat exchangers, because when the volume flow of the two media fluid is roughly the same, the choice of equal arrangement is more reasonable. While the difference of the medium fluid flow on both sides is large, the small side of the fluid should choose multi-process layout. In general case, the change side of plate heat exchanger is always a single process. Multi-process plate heat exchanger, if not special needs, generally take the same number of flowways for the same liquid. In the case of certain pressure drop, the multi-process arrangement will have a corresponding lower pressure drop for each measurement, so the flow rate will become low. In addition, multi-process layout is also an important factor of different average heat transfer temperature, which should be avoided or reduced as much as possible. In recent years, with the diversification of plate heat exchang...