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Solar Brazed Plate Heat Exchanger - 50 Plates 300K BTU


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Stainless Steel Copper Brazed Plate Heat Exchanger

50 Plates - BL 14-50

solar heat exchanger brazed copper large

solar heat exchanger brazed copper large

Northern Lights Solar Solutions Plate Heat Exchangers - BL 14-50. Our Brazed Plate heat exchanger consists of 50 multiple, thin, slightly-separated  corrugated plates that together form a very large relative surface area given the volume of these heat exchangers.  They produce relatively low pressure drops and operate efficienly at the lower flow rates associates with solar and hydronic circulation systems.  The stacked-plate arrangement can be more effective, in a given space, than most other type of heat exchangers. These Solar Brazed Plate Exchangers have a specially patented "wafer or corrugated " stamps that increase the flow turbulence and consequently the heat transfer and scaling factor making them ideal in solar application which have smaller flow rates.

Our  line of brazed plate heat exchangers are single wall stainless steel versions.  Some codes require double water heat exchangers with visible leak detection for potable domestic water where a double wall heat exchanger is required.  We have two sizes; a 30 plate and a 50 plate version. The smaller 30 plate unit is suitable for up to 8 solar collectors and the larger unit is used when the solar collectors exceeds 8 such as commercial solar application or in applications were a low differential temperature gradient is needed.

The entire construction is sealed together by the means of brazing in a special vacuum furnace..



  2. Central Heating;
  3. Heating and Cooling in HVAC installations;
  4. Hydraulic and Lube Oil Coolers;
  5. Tap Water and Radiator Heating;
  6. Hydronic Heating;
  7. Geothermic and Solar Heating;
  8. Evaporation and Condensation in Refrigeration Systems;
  9. Heat Recovery;
  10. Steam Heating;
  11. District or Zone Heating Systems


The Outstanding Features:

  1. Compact structure and easy installation;
  2. Light in weight;
  3. Small consumption of water;
  4. Outstanding Overall Heat Transfer Coefficient;
  5. Wide Variety of plate sizes and Patterns;
  6. Durability and;
  7. Stainless Steel
  8. Low scaling coefficient



Overall Dimensions

(Dx B x A)


 BL 14-50     3.15 x 7.5 x 4.85"

C=1.57" ; E=6.06"

Port Connections 316L

3/4" male NPT - load side (left D3 & D4)

3/4" male NPT -solar side (right D1 & D2)

Max Design Pressure

435 PSI

Design Temperature

200 °C  or 392 °F

Plate Material

316 L Stainless Steel

Brazing Material


Heat Transfer Rating   
BL 14-50 = 300 kBTU/hr (88 kW)
Design Delta T for Rated BTU 60 °K  or 108 °R
Heat Transfer Area BL 14-50 = 0.672 m2 (7.2 ft2)
Pressure Drop (both sides with water)  8psi @15USGPM
Liquid Retension
BL 14-50 = 0.48L (.13 USGAL)


solar heat exchanger flow

Return Policy

We want you to be 100% satisfied with your purchase, if you are not, ship it back to us in the original packaging condition and we will refund your purchase less a 10% restocking fee, provided the equipment is received in good condition. Refund offer valid for 30 days from receipt of product.


We feel that being honest is a much better policy to win your trust rather than trying to lure you with nearly impossible statements such as lifetime warranty. Nothing lasts forever! Our warranty policy is simple; we offer a 3 year warranty on everything we sell and 10 years on our collectors. With this warranty you will get NO hassle next business day replacement (if shipping service and inventory permits). However, as a valued customer you will get technical support through the lifetime ownership of your product. Our Collector do carry longer warranties 10 years from the manufacture. The warranty cover failures that occur during normal operational conditions or manufactures defects. It does not cover failure due to inappropriate operation such as freezing or over heat. Damage caused by vandalism, storms, floods etc. Your houshold insurance should be modified to cover the system from such situations.

We accept PayPal and Credit card (Visa or Mastercard). If you are ordering multiple units and part, please call us to see if we can save you shipping cost for multiple item orders.


For complete solar kits please allow 2-3 weeks delivery. These kits are shipped via our preferred freight forwarder company and where possible we will schedule residential tailgate delivery (curbside). Heaters and accessories are usually in stock unless indicated otherwise. We do have expedited shipping services available for an additional fee. Please call us if you need a rush order. Once your order has been shipped you will be contacted via email and a tracking number will be provided.

Add to Cart:

  • Model: N-104
  • Shipping Weight: 5lbs
  • 2 Units in Stock
  • Manufactured by: Alfabiz

This product was added to our catalog on Thursday 05 May, 2011.

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