plate heat exchanger

plate heat exchanger: high thermal effciency Small temp differences High corrosion resistance Extremely compact size

PALTE HEAT EXCHANGER
SERIES	EATB-85
DESIGN PRESSURE(Mpa)	3.0 OR 4.5
LOWEST WORKING TEMPERATURE	—180
HIGHTEST WORKING TEMPERATURE	200
SINGLE PLATE EXCHANGED AREA	0.095
LIQUID LOAD PER CHANNAL(L)	0.175
CROSS-SECTIONAL AREA PER CHANNAL	0.00036
PLATE MATERIAL	SS316L/304L
WELDING MATERIAL	99.9% COPPER
HIGHT(mm)	564
WIDTH(mm)	188
THICKNESS(mm)	2.32×N(number of plates)+8
WEIGHT(Kg)	0.45×N(number of plates)+3

 plate heat exchangers  consist of stainless steel plate packs, which have embossed chevron patterns. The plates are turned 180 degrees to each other, causing the plate ridges to intersect and creating a lattice of intersecting channels. Fluids can flow in counter-current and co-current way. The entire construction is nondismountable and scaled together by means of brazing in a special vacuum furnace.

Major advantage over a conventional  plate heat exchangers  in that the fluids are exposed to a much larger surface area because the fluids spread out over the plates. This facilitates the transfer of heat, and greatly increases the speed of the temperature change.  plate heat exchangers are now common and very small brazed versions are used in the hot-water sections of millions of combination boilers. The high heat transfer efficiency for such a small physical size has increased the domestic hot water (DHW) flowrate of combination boilers. The small brazed plate heat exchangers  has made a great impact in domestic heating and hot-water

How  plate heat exchangers Works:

Heat transfer occurs when there is a difference in temperature between two mediums. Heat will travel from the hot source to the cold source. The rate at which the heat transfer occurs at is determined by many factors such as the heat conductivity of the two materials andthe difference in temperatures of the two mediums. Convectiuve heat transfer occurs when the materials are moving against each other

Corrosion protection for  plate heat exchangers  stainless steel has a high resistance to most chemicals but is sensitive to chloride ion concentration so this must be limited to 280ppm or less(lower than 55 C),the copper used in the brazing process is mainly sensitive to strong acid and ammonia so the PH must be maintained between 6 to 8.in practical application.for example,hydrochloric acid should never be used to clean the  plate heat exchangers;if  plate heat exchangers  are applied in seimming pool heating,limite chloride ion concentration to 280ppm in the water;what's more,in chemical,pharmacy and other industries,solutions containing strong acid like hydrochloric acid and harshorn won't be proper fluid medium.

Applications for  plate heat exchangers:

1,Used in various fluid media:all type of refrigerants(R410a,R407c,R404,R134a,R22,R23,etc),oil,water,water and glycol mixtures.                                          

2,Used in various equipment:hot pumps,industrial water cooling machines,plastic injecting machines,welding machines,oil pressure machines,compressors(circulation oil),air conditioners,refrigerators,air dryer,water cooler,drinking thoughts,constant temperture refrigerator,heat recollection and circulation,floor heating,indoors and outdoors heating devices

plate heat exchanger