VEVOR Plate Exchanger

Product Overview

VEVOR offers plate exchangers designed for efficient heat transfer. The company is committed to providing tools at competitive prices, aiming for significant savings compared to major brands, though customers are advised to verify savings independently.

Models

Available models include:

• EATB28-30
• EATB28-50
• EATB28-80
• EATB28-100
• EATB12-30
• EATB12-40
• EATB12-60

Parameter List

The following table details the specifications for various VEVOR Plate Exchanger models:

Part List

The following table lists the components included with the plate exchangers:

Security & Warnings

1. This product should be used for welding spigots when using refrigerant to avoid refrigerant leakage.
2. If undissolved solids like sand, weeds, leaves, and other fibers are in the water, the channels are easily blocked; it is recommended to use a 40~70 mesh strainer to avoid blocking.
3. Any heat exchanger could freeze up when the temperature is below zero. Freezing inside the heat exchanger will result in structural damage and leaking. If leaking happens in the evaporator, even the compressor could be destroyed. In order to avoid freezing:
   • Use a freeze protection thermostat and flow switch to guarantee a consistent water flow before, during and after compressor operation.
   • Avoid operation the unit during pump downtimes. Discharge the water when the exchanger is left unused and keep heating the water when in use.
   • Use antifreeze when the evaporating temperature is close to liquid side freezing, by adding glycol or other antifreezing in the water.
4. Cleaning: Regular reverse flushing insitu is the simplest option. If scaling has occurred, chemical cleaning will be necessary. Clean with detergents for fatty deposits (without chlorine), for heavier fouling use chemicals compatible with copper and stainless steel such as formic, citric or any other organic acids. Use weak acid cleaning liquid pumped through the heat exchanger in reverse flow direction at approximately twice the normal flow rate. Remember that the cleaning acid should be circulated in reverse flow for usually 24 hours. At the completion of the cleaning process, it is important that the unit be flushed with clean water for at least 30 minutes.
5. Suitable Medium:
   • Any refrigerants except ammonia, chlorine and DI water
   • Water, vapor
   • Oil, organic solvents, Gas
   • pH 6~8
6. Please pay attention to the operating temperature and design pressure on the PHE.

Operation

1. Screw Thread Link: In order to avoid danger to the components, there will be no load to the link between BPHE and the piece; you need to use a screw cap and airproof circle to airproof. Use the ergometer to refer to the data in the table to do the screw thread link.

2. Copper Brazing Link: Clean the weld surface and brush on the flux, using 40-50 silver-based rods for welding; the maximum temperature does not exceed 650 °C (1202°F); cooling water into the water-side and in the vicinity of the welding department to impose an appropriate cooling and the refrigerant-side injection with Nitrogen to avoid oxidation.

3. Bolt Fastening: In order to avoid excessive torque lead to bolt come off and the back cover plate deformation, use the measuring wrench according to the data listed on the table to fasten the bolt.

4. Installation: Please refer to nameplate's connected tube sketch and installation drawing. Moreover, customer should configure a connected tube accurately, and install brazed plate heat exchanger vertically.

If the pipeline has vibration, longer pipe and higher thermal expansion, which will affect brazed plate heat exchanger. You'd better consider adopting the following devices: install rubber pad between brazed plate heat exchanger and bracket; compressor with shock absorber, and use corrugated pipe or other damping devices when straight pipe is longer.

Working Schematic Diagram

The diagram illustrates the internal structure of the plate heat exchanger, showing corrugated plates pressed close and welded together around angle holes, forming channels. Arrows indicate the flow of two media. Water channels surround refrigerant channels. Key components labeled include port holes, the first plate, and the front panel. The diagram highlights that corrugated plates are welded at the edges, creating gaps for fluid entry into the channels.

Connection Diagram:

Two connection configurations are shown for ports Q1, Q2, Q3, Q4, indicating inlet and outlet for hot and cold media:

• Configuration 1: Cold medium in at Q3, hot medium out at Q2, cold medium out at Q4, hot medium in at Q1.
• Configuration 2: Cold medium in at Q4, hot medium out at Q1, cold medium out at Q3, hot medium in at Q2.

Note on Refrigerant Flow:

• When the PHE is used as an evaporator, the refrigerant must flow Q2 → Q1 or Q3 → Q4.
• When the PHE is used as a condenser, the refrigerant must flow Q1 → Q2 or Q4 → Q3.

If connections are not made as shown, there may be two media mixed together or no media outflow.

Exchanger Selection

This section provides a form for selecting an exchanger. Users should fill in the following details:

• Capacity
• Max dp (50kPa)
• Fluid 1: Side 1 Inlet Temp., Side 1 Outlet Temp., Flow Rate
• Fluid 2: Side 2 Inlet Temp., Side 2 Outlet Temp., Flow Rate

Note: Data in parentheses are default values. If the heating capacity is indeterminate, please provide the Flow Rate value.