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1.Nickel Brazed Plate Heat Exchanger, 2.Application:Ammonia system, 3.Stainless steel AISI316/304 plates, 4.Max.pressure:20bar - details see: https://www.machineto.com/high-corrosion-resistance-stainless-steel-plates-nickel-brazed-plate-heat-exchangers-for-ammonia-system-nl20-series-10241747

High Corrosion Resistance Stainless Steel Plates Nickel Brazed Plate Heat Exchangers for Ammonia system NL20 series

Model	NL20
Width, A [mm]	76
Height, B [mm]	310
Length, E [mm]	9+2.3n
Horizontal port distance, C [mm]	42
Vertical port distance, D [mm]	282
Max pressure [Mpa]	2
Max flowrate [M3/h]	8
Weight [kg]	1.0+0.08n

General information

NL series is a plate heat exchanger made of stainless steel and Nickel. Nickel heat exchangers are well suited

in applications which put high demand on cleanliness, applications where ammonia is used.

Its high resistance to corrosion makes it both hygienic and environmental friendly. It is extremely compact

compared to its capacity to withstand great strains in demanding heat transfer applications.

Working principles

The heating surface consists of thin corrugated metal plates stacked on top of each other. Channels are formed

between the plates and corner ports are arranged so that the two media flow through alternate channels, always

in counter current flow. The media are kept in the unit by a bonded seal around the edge of the plates. The contact

points of the plates are also bonded to withstand the pressure of the media handled.

Standard design

The plate pack is covered by cover plates. Connections are located in the front or rear cover plate. The channel plates

are corrugated to improve heat transfer design.

Particulars required for quotation

To enable Alfa Laval's representative to make a specific quotation, enquiries should be accompanied by the following

particulars:

– flow rates or heat load required

– temperature program

– physical properties of liquids in question

– desired working pressure

– maximum permitted pressure drop

Applications Within refrigeration:

- Oil cooler

- Condenser

- Evaporator

- Economizer

- Desuperheater

- Absorption systems

Other main applications:

- Domestic hot water heater

- Process cooling

- Hydraulic oil cooling

- Laser cooling

- Hygienic/sanitary

- Water/water cooling & heating

Short delivery time.

High quality

Reasonable price

Customer made

Know-how design and customer support

Width	Height	Horizontal port distance	Vertical port distance	Thickness mm	Max Plates	Max flowrate (M3/h)	Weight (kg)	Heat exchange area (m2)	Volume L
76	310	42	282	9+2.3N	100	8	1.0+0.08N	0.02 (N-2)	0.018 (N-2)

Type	Width	Length	Horizon hole	Vertical Hole	Height	Weight
NL14	76	206	42	172	10+2.3N	0.7+0.06N
NL20	76	310	42	280	10+2.3N	1.0+0.08N
NL26	111	310	50	250	10+2.35N	1.3+0.13N
NL50	111	525	50	466	10+2.5N	2.0+0.21N
NL95	191	616	92	519	11+2.35N	7.8+0.44N