Stainless Steel Plate Heat Exchanger

All Plate Heat Exchangers - Model Comparison
Plattenwärmetauscher B3-12-12B3-12-12
44,00€
In stock
Plattenwärmetauscher B3-12-20B3-12-20
59,00€
In stock
Plattenwärmetauscher B3-12-30B3-12-30
69,00€
In stock
Plattenwärmetauscher B3-12-40B3-12-40
89,00€
In stock
Plattenwärmetauscher B3-12-50B3-12-50
99,00€
In stock
Plattenwärmetauscher B3-12-60B3-12-60
109,00€
In stock
Plattenwärmetauscher B3-23-20B3-23-20
99,00€
In stock
Plattenwärmetauscher B3-23-30B3-23-30
129,00€
In stock
Plattenwärmetauscher B3-23-40B3-23-40
159,00€
Out of stock
Plattenwärmetauscher B3-23-50B3-23-50
189,00€
In stock
Plattenwärmetauscher B3-32-20B3-32-20
159,00€
Out of stock
Plattenwärmetauscher B3-32-30B3-32-30
199,00€
Out of stock
Plattenwärmetauscher B3-32-40B3-32-40
249,00€
In stock
Plattenwärmetauscher B3-32-50B3-32-50
269,00€
In stock
layers Number of Plates 12 20 30 40 50 60 20 30 40 50 20 30 40 50
swap_vert max. Power 25 kW 45 kW 65 kW 80 kW 90 kW 130 kW 90 kW 135 kW 180 kW 225 kW 115 kW 175 kW 230 kW 285 kW
view_in_ar Volume 0,22 L 0,36 L 0,54 L 0,72 L 0,90 L 1,08 L 0,80 L 1,20 L 1,60 L 2,00 L 1,00 L 1,50 L 2,00 L 2,50 L
crop Heat Exchange Area 0,114 m² 0,24 m² 0,36 m² 0,48 m² 0,60 m² 0,80 m² 0,46 m² 0,69 m² 0,92 m² 1,15 m² 0,64 m² 0,96 m² 1,28 m² 1,60 m²
water Flow rate max. 4 m³/h max. 4 m³/h max. 4 m³/h max. 4 m³/h max. 4 m³/h max. 4 m³/h max. 4 m³/h max. 4 m³/h max. 4 m³/h max. 4 m³/h max. 12 m³/h max. 12 m³/h max. 12 m³/h max. 12 m³/h
weight Weight 0,80 kg 1,11 kg 1,50 kg 1,85 kg 2,23 kg 2,61 kg 2,57 kg 3,41 kg 4,27 kg 5,10 kg 3,86 kg 4,97 kg 6,20 kg 7,50 kg
straighten Size
(Length x Width x Height)
L:191mm W:073mm H:034mm L:191mm W:073mm H:052mm L:191mm W:073mm H:067mm L:191mm W:073mm H:097mm L:191mm W:073mm H:112mm L:191mm W:073mm H:127mm L:315mm W:073mm H:052mm L:315mm W:073mm H:074mm L:315mm W:073mm H:096mm L:315mm W:073mm H:119mm L:286mm W:116mm H:058mm L:286mm W:116mm H:082mm L:286mm W:116mm H:103mm L:286mm W:116mm H:135mm
conversion_path
Connection
2x ½ & 2x ¾
or 4x ¾ inches
2x ½ & 2x ¾
or 4x ¾ inches
2x ½ & 2x ¾
or 4x ¾ inches
2x ½ & 2x ¾
or 4x ¾ inches
2x ½ & 2x ¾
or 4x ¾ inches
2x ½ & 2x ¾
or 4x ¾ inches
4x 3/4 inches 4x 3/4 inches 4x 3/4 inches 4x 3/4 inches 4x 1 inch 4x 1 inch 4x 1 inch 4x 1 inch
split_scene_left Collection
B3-12 Collection B3-12 Collection B3-12 Collection B3-12 Collection B3-12 Collection B3-12 Collection B3-23 Collection B3-23 Collection B3-23 Collection B3-23 Collection B3-32 Collection B3-32 Collection B3-32 Collection B3-32 Collection
model_number_instruction
Digit Meaning
B3 Copper-brazed plate heat exchanger
12 Heat exchange area per plate = 0.012 m²
Total heat exchange area = 20 plates ⋅ 0.012 m² = 0.24 m²
20 Number of plates

Frequently Asked Questions

How can I get an invoice for my order?

If you need an invoice showing VAT, you can find it under "VAT Invoice" on the order confirmation page. You can also request it via our contact form or by emailing info@alex-depot.de. Alternatively, you can indicate this in the shopping cart under "Special Instructions," and we will promptly send the invoice to you by email.

How do I make a warranty or return claim?

We offer a 3-year warranty on our products, covering material and workmanship defects. If a defect occurs within the warranty period, please contact us to arrange a return or replacement.

For returns, you have 30 days from receipt of your order. Please contact us to obtain a return authorization and instructions. Ensure that the products are in their original packaging.

When will out-of-stock products be available again?

If a product is currently out of stock, we do our best to restock it as quickly as possible. You are welcome to let us know if a specific product is missing, and we will check whether we can source it for you in advance.

Do you offer custom-made plate heat exchangers?

Yes, we offer custom-made plate heat exchangers tailored to our customers' specific requirements. If you need a bespoke solution, please contact us with your specifications, and we will gladly help you find the right heat exchanger for your application.

How do you calculate the mean temperature difference?

The mean temperature difference of a plate heat exchanger can be calculated by several methods, depending on the type of heat exchanger and the specific conditions. A common method is the Logarithmic Mean Temperature Difference. Here is how you can calculate it:

Formula for the logarithmic mean temperature difference

LMTD = (ΔT1 - ΔT2) / ln(ΔT1 / ΔT2)

variables

  • LMTD: logarithmic mean temperature difference
  • ΔT1: Temperature difference at one end of the heat exchanger
  • ΔT2: Temperature difference at the other end of the heat exchanger

Example

  • Temperature of the hot liquid at the inlet (Th): 150 °C
  • Temperature of the cold liquid at the inlet (Tc): 30 °C
  • Temperature of the hot liquid at the outlet (Th'): 80 °C
  • Temperature of the cold liquid at the outlet (Tc'): 60 °C
1. Calculation of ΔT1 & ΔT2

ΔT1 = Th - Tc = 150 °C - 30 °C = 120 °C

ΔT2 = Th' - Tc' = 80 °C - 60 °C = 20 °C

2. Calculation of the mean temperature difference

LMTD = (120°C - 20°C) / ln(120°C / 20°C)
LMTD ≈ 55.8 °C

How is the heat flow calculated?

Q = U * A * LMTD

  • Q: heat flow (W)
  • U: total heat transfer coefficient (W/m²·K)
  • A: Heat transfer area (m²)
  • LMTD: logarithmic mean temperature difference (K)

or

Q = ṁ * cp * LMTD

  • Q: heat flow (W)
  • ṁ: mass flow rate (kg/s)
  • cp: specific heat capacity (J/kg·K)
  • LMTD: logarithmic mean temperature difference (K)

How should I connect my heat exchanger?

Counterflow and Parallel Flow Principle

The transferable heat energy of a plate heat exchanger is determined not only by the size of the exchange surface and the heat transfer coefficient (k) but also significantly by the flow directions of the involved fluids. If both fluids flow in the same direction inside the plate heat exchanger, this is called the parallel flow principle. If they flow past each other in opposite directions, it is called the counterflow principle.

The flow direction significantly affects the mean temperature difference between the fluids, which is crucial for the efficiency of heat transfer. Therefore, we explicitly recommend the counterflow principle. Connect the plate heat exchanger according to the diagram provided on the unit. More information is available on our blog.

How do I find the right plate heat exchanger application?

Finding the right plate heat exchanger doesn’t have to be complicated. If you have any questions or need assistance, don’t hesitate to contact us. We’ll gladly help you choose the right model for your requirements.

Are the plate heat exchangers suitable for drinking water?

Our copper-brazed plate heat exchangers are generally suitable for drinking water. However, please note that very soft water (with very low mineral content) or aggressive water (e.g., very low pH or high oxygen content) can gradually affect the copper brazing over time.