Asymmetric Plate Heat Exchangers

Heat Exchanger for District Heating.

DH59 is the first plate heat exchanger developed especially for District Heating. In the same unit heat for tap water and for radiators are made. To make the primary return water low as possible we need three sections. Sector one is heating radiators. Sector two is heating hot water and hot water circulation. Sector three primary water from sector one and two jointly together warming up the inlet cold water.

Heat Exchanger for Water Chillers.  

The hot gas is coming into the condenser (white lines).  The superheated gas is going up and cools down. The gas is condensing and the liquid floats down to the bottom. At the bottom the liquid under cools. After that the liquid goes in cannels up to the top where it deeply under cools, when it superheat and dry up the wet gas.

From the expansion valve the velocity comes in at the bottom of the heat exchanger (green lines). In the evaporator there is built an injector for recirculating of oil and liquid. The heat transfer is more than 50 % higher then in standard plates. Before the outlet the gas get superheated, free from liquid .

EC59 is the new solution for liquid cold chillers. The evaporator has exceptional good performance at low temperature conditions. The evaporator has two important improvements. In the evaporator there is built in a superheater, because of that, bigger surface can be used for evaporating. Liquid from the bottom of the evaporator recirculates back; the distribution in the evaporator gets perfect. EC59 is optimized for cooling applications.

 

Heat Exchanger for drying compressed humid air.

Dryer59 is not only a heat exchanger it’s making the work off the entire process. This heat exchanger has been developed for three years together with a Japanese company Flair Japan. In the Heat Exchanger the humid air gets dry and the water separates out from a connection in the bottom. Look at the drawing at left, red lines is the compressed humid air. The inlet airflow comes in at the top of the heat exchanger. The air cools down first in the precooler/reheater zone. The air cools further down in the refrigeration zone and lot of water are condensing out. The water drops falls down to the bottom and separates out from the air stream. The air is dry and leaves the zone. In a scar in the plate the air is going over to the contra side in to the reheater/precooler zone (white lines). The airflow is going cross this zone and out at top (white dott).