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| CB14-77 - Brazed Plate Heat Exchanger |
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 brazed seal around the edge of the plates. The contact points of the plates are also brazed 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 efficiency and to make them rigid. Standard materials Cover plates Stainless steel AISI 316 Connections Stainless steel AISI 316 Plates Stainless steel AISI 316 Brazing material Copper 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
Advantages of brazed plate heat exchangers in Industry and HVAC&R The Alfa Laval Brazed plate heat exchangers (BHE) have several advantages over traditional heat exchangers in Industrial and HVAC&R applications. - - The high heat transfer efficiency of the BHE makes it extremely compact and also easy to install in places where space is limited.
- - The unit has no gaskets and is therefore suitable in applications where temperature and/or pressure is high e.g. in district heating.
- - The Alfa Laval supply system reassures that, no matter where you are on the globe, the BHE units are available with a very short delivery time.
Standard Data | | CB14 | CB27 | CB52 | CB76 | CB77 | | Min. working temperature **) | –256°F | –256°F | –256°F | –256°F | –256°F | | Max. working temperature **) | 347°F | 347°F | 347°F | 347°F | 347°F | | Min. working pressure **) | Vacuum | Vacuum | Vacuum | Vacuum | Vacuum | | Max. working pressure, S3S4/S1S2 **) | 464 psi | 464 psi | 464 psi | A,E,H: 464 psi
L,M: 363 psi | 363/232 psi | | Volume pr. channel, gallon | 0.005 | 0.01 | 0.025 | A: 0.047/0.06
E: 0.047/0.047
C,M,H: 0.06/0.06 | 0.06 | | Max. flowrate, S3S4/S1S2. *) | 16 GPM | 35/50 GPM | 35/50 GPM | 170 GPM | 270 GPM | | Standard number of plates H,M,L | 14,20 | 10,18,24, | 10-100 | 20-150 | 20-150 | | | 30,40 | 34,50,70 | (10,20,...) | (20,30,...) | (20,30,...) | | | | 100,120 | | | | <>*) Water at 5 m/s (connection velocity) **) According to European pressure vessel Directive (PED) (CE-Approval)
Standard dimensions (mm) 
| Type | a | b | c | d | e | A | Weight kg | | CB14 | 172 | 42 | 208 | 78 | 24 | 8 + n x 2.35 | 0.7 + n x 0.06 | | CB27 | 250 | 50 | 310 | 112 | 45 | 9 + n x 2.40 | 1.2 + n x 0.13 | | CB52 | 466 | 50 | 526 | 112 | 45 | 10 + n x 2.40 | 1.9 + n x 0.23 | | CB76 | 519 | 92 | 618 | 191 | 48 | A: 10 + 2.5 x n
E: 10 + 2.2 x n
H,L;M: 10 + 2.85 x n | 7.0 + n x 0.44 | | CB77 | 519 | 92 | 618 | 191 | 48 | 10 + n x 2.85 | 7.0 + n x 0.44 | | | | | | | | | |
 |  |  |  |  | | CB14 (S1-S4) | CB27,CB52 (S3,S4) | CB27,CB52 (S1,S2) | CB76 (S1-S4) | CB77 (S1,S2) | | | | | CB77 (S3,S4) | |
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