Brazed Plate Heat Exchangers GJ200

Product Introduction

Brazed plate heat exchangers and ordinary plate heat exchangers (usually referring to detachable plate heat exchangers) have significant differences in structure, process and application. The main differences are as follows:

1. Structural design

The brazed plate heat exchanger is integrally formed. The stainless steel plates are permanently welded into a whole through high-temperature brazing (copper or nickel-based brazing filler metal), without sealing gaskets or frame structures. Smaller in volume, lighter in weight, with a denser corrugated design on the plates and higher pressure-bearing capacity (up to over 30 bar)

The common plate heat exchanger (detachable type) is modularly set up, assembled from independent plates, rubber sealing gaskets and metal frames, and tightened by bolts. The plates and gaskets can be replaced separately, but they are relatively large in volume and have a lower pressure resistance (usually ≤16 bar).

2. Manufacturing process

The brazed plate heat exchanger is welded at high temperature in a vacuum brazing furnace to form an undetachable rigid structure with no leakage points (except for the inlet and outlet).

Detachable plate heat exchangers rely on gaskets for sealing. Gaskets need to be inspected or replaced regularly to prevent leakage.

3. Application Scenarios

Brazed plate heat exchangers are applied in high-pressure/high-purity medium environments such as refrigeration (air conditioning, heat pumps), petrochemicals, and shipping.

Detachable plate heat exchangers are applied in industries such as food and beverage, HVAC, and pharmaceuticals, where frequent cleaning or medium replacement is required.

4. Cost and Lifespan

The initial cost of brazed plate heat exchangers is relatively high, but they have a long service life (no gasket aging problem) and are suitable for long-term stable working conditions.

Detachable plate heat exchangers are used in scenarios where the medium is prone to scaling, requires frequent cleaning, or has variable working conditions.

Technical parameters