Plate & Frame Heat Exchangers protection: Sea water filtration

Central Cooling with sea water using Plate & Frame Heat Exchangers in Titanium is a now the system usually in operation when large duties are required (Oil & Gas, Petrochemicals, Power etc.) on seashore with small LMTD between fluids and advantage to use cooling water loop inside the plant with no requirements of exotic material on heat exchangers, valves etc.

On the other hand we have to protect Plate & Frame HEX: 1-2 mm filtration (20-50% of of the plate gap) when sea water is involved, to avoid clogging

Bernoulli filters harness the power of this natural physical phenomenon in order to create an ingeniously simple and highly reliable filtering operation.

The Bernoulli cleaning principle with few moving parts offers a highly reliable design with limited and simple maintenance.

• offers an ingeniously simple cleaning system with few moving parts, ensuring operational reliability and reduced maintenance.
• provides an everlasting corrosion free design because of the glass fibre material.
• saves energy and  increases design flexibility thanks to low flushing pressure.

Normal filtering operation

The flushing valve is closed. The piston remains outside the strainer basket.

Flushing phase one

Cleaning is initiated by a timer or differential pressure control. The flushing valve opens and large particles are flushed out.

Flushing phase two

The piston moves twice into the basket, thereby removing the particles which are stuck to it.

 Simple and ingenious filtration with unrivalled reliability

In a Bernoulli Filter, the bulk of the work is done by a disc mounted on a pneumatic cylinder. The filter basket is cleaned by this disc as water passes through a gap between the disc and the basket.

 Flow velocity increases locally around the disc reducing static pressure in accordance with the Bernoulli principle. The vacuum effect of lower static pressure around the edge of the disc cleans the basket. This is the key factor that separates the Bernoulli Filter and makes it unique on the filter market!

EPC Contractors prefer to buy complete package  (PFHE+filters) by on single supplier (to avoid discussion in case of malfunction) therefore if you are dealing with Plate & Frame Exchangers competence on Benoulli filters is a must to have!