Solar Hot Water Heating > Solar Brazed Plate Heat Exchanger - 50 Plates 300K BTU
Solar Brazed Plate Heat Exchanger - 50 Plates 300K BTU

The product you selected is currently unavailable.

Price: $375.00
Availability: in stock
Prod. Code: SB-50 Plates-300K BTU

Stainless Steel Copper Brazed Plate Heat Exchanger

50 Plates - SL15-50


Northern Lights Solar Solutions Plate Heat Exchangers - SL15-50. 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 25 plate and a 50 plate version. The smaller 25 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 construciton 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)


 SL15-25     3.15 x 7.5 x 2.6"

 SL15-50     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)

1/2" male NPT -solar side (right D1 & D2)

Max Design Pressure

650 PSI

Design Temperature

225 °C  or 437 °F

Plate Material

316 L Stainless Steel

Brazing Material


Heat Transfer Rating SL15-25 = 150 kBTU/hr (44 kW)  
SL15-50 = 300 kBTU/hr (88 kW)
Design Delta T for Rated BTU 60 °K  or 108 °R
Heat Transfer Area SL15-25 =0.322 m2 (3.5 ft2)
SL15-50 = 0.672 m2 (7.2 ft2)
Pressure Drop (both sides with water) SL15-25 8psi @15USGPM
Liquid Retension SL15-25 = 0.23 L (.06 USGal)
SL15-50 = 0.48L (.13 USGAL)


solar heat exchanger flow

        Here is what some of our customers say about us!


  • 10 out of 10 - Reg T Off Grid Solar system 2015 MB
    "They always deliver for me....great service and loads of technical back up knowledge.."
  • 10 out of 10 - Janine G Off Grid Solar system 2015 MB
    "Great products, patient with my tech issues around payments, ease of payments on line…"
  • 9 out of 10 - digitech … Solar Parks lights 2015 AB
    "Nobody is perfect."
  • 10 out of 10 - Phil G Off Grid Solar system 2015 ONT
    "Good product good service good price"
  • 10 out of 10 - Don O Off Grid solar system repair and LED lights 2015 MB
    "Good service"
  • 10 out of 10 - Jason H Commercial solar system 2015 AB
    "A little hard to get a hold of sometimes. Other than that great company that always goes…"
  • 10 out of 10 - David T LED light and Solar system 2015 MB
    "Personalized service, quality products and local availability."
  • 10 out of 10 - Reg T  Off Grid Solar system 2015 MB
    "Very knowledgeable...helpful..​.goes out of her way to accommodate sales even on Saturday."
  • 10 out of 10 - Don G Off Grid Solar system 2015 MB
    "Very prompt, knowledgeable, and friendly attitude."
  • 10 out of 10 - Kim A Grid Tie Solar system  2014 MB
    "On time, flexible and very good customer service. Would (and have) told others about…"
  • 10 out of 10 - Brenda Solar Park lights 2014 ONT
    "very convenient"
  • 10 out of 10 - Gwen P Commercial Repairable LED 2014 MB
    "About ten years ago we started looking for brighter lights to use especially in winter…"
  • 10 out of 10 - Manitoba… Commercial repairable LED
    "good service, good products, fair pricing" MB 2014
  • 10 out of 10 - Dan M On Grid Solar system 2014 MB
    "has proven track record, very clear on setting expectations of project.…"
  • 10 out of 10 - Jack W Off Grid solar system 2014 MB
    "Very very helpful"

Like us on Facebook   Follow us on Twitter   View our profile on LinkedIn  

Head Office:     Evolve Green - 53 Main St - Marchand, MB  Canada  R0A 0Z0

© Copyright 2008-2016 Evolve Green. All rights reserved.