HVAC Plate Heat Exchanger as Heater or Cooler

Product Description

HVAC Plate Heat Exchanger as Heater or Cooler

Product Description

The plate heat exchanger is a new efficient and compact heat exchanger that has developed and extensively used in recent decades. It consists of multiple parallel corrugated-surface thin metal sheets that overlap and are then fixed by lamp plates and bolts. The cold working fluid and the hot working fluid flow through the narrow and winding passage made of two neighboring plates alternately and realize cold and heat exchange through the plates separating the two working fluids.

 

Structure

The plate heat exchanger consists essentially of heat transfer plates, gaskets and a clamping device. Thanks to its structure and heat exchange principle, it is characterized by compact structure, small floor area, high heat transfer coefficient and operation flexibility, wide application range, small heat loss, easy installation and cleaning, etc. The two mediums have a mean temperature difference as small as 1ºC and heat recovery efficiency higher than 99 percent. Based on the same pressure loss, the plate heat exchanger has, compared with a tubular heat exchanger, a heat transfer coefficient two to four times higher, a one-third floor area and two-thirds metal consumption. It is therefore an efficient and energy, material and investment saving advanced heat exchanger. It is now widely used in industrial fields such as chemical industry, petrochemical, food, machinery, central heating, metallurgy, power, ships, paper-making, textile, pharmaceutical industry, nuclear industry, seawater desalination and combined heat and power generation to meet the requirements of processes such as cooling, heating, condensation, concentration, sterilization and residual heat recovery. It has become a highly competitive product in the heat exchanger field or evenly has replaced conventional tubular heat exchangers. With its development, it will be used in more and more fields.



 

Product Parameters

Plate and gasket

The plate materials and the gasket materials mainly depend on the corrosive properties and temperatures of the cold exchange medium and the heat exchange medium. The plate heat exchanger's plate materials and corresponding applicable places are given in Table 1 and its gasket materials and corresponding applicable places in Table 2 for your reference.

Table 1 Plate Materials
 

Material name	Thickness (mm)	Material grade	Applicable place
Stainless steel	0.5-0.8	304,321,316,316L	Places with serious corrosion caused by acid or base mediums and places not suitable for chloride ions
Commercial pure titanium	0.5-0.8	Ti	Alkali or salt making places, sea water desalination places, low-temperature places, freezing places or places with chloride-ion corrosion
Nickel	0.5-0.8	Ni	Places resistant to corrosion, hot alkali liquor corrosion, neutral solutions or subacid solutions
Acid-resistant steel	0.5-0.8	RS-2, SM0254, HC-276	Sulfuric acid field and the fields with acid corrosion

Table 2 Gasket Materials
 

Material name	Code	Applicable temperature	Applicable place
NBR	N	-20~110ºC	Water, non-polar oil, mineral oil, lubricating oil, silicon oil, etc.
EPDM	E	-20~150ºC	Steam, water, ozone, polar chemical mediums, alcohol, weak acids, weak bases, salt solutions, etc.
Chloroprene rubber	C	-40~100ºC	Ammonia, mineral roil, lubricant, freon, etc.
Fluororubber	F	0~180ºC	Inorganic acids, bases, mineral oil, halohydrocarbon and oxidant
Silicon rubber	Q	-40~200ºC	Food field, etc.

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