Solartrope Supply    

Wholesale Solar Distributor                 (800) 515-1617
(714) 637-6226
   Info@Solartrope.com

Heat Exchanger

Heat exchangers are a compact unit designed to maximize the heat transfer area between the fluid from the heat source and the fluid to be heated. This is achieved through unique paralleled plate constructions which narrows fluid paths of both fluids down to boundary layer thickness of the fluids (eliminating the wasted center core of the fluid that is pumped through but not heated in a standard tube or shell heat exchangers). Model number 2.0, 3.5, 5.0, and 10.0 of these heat exchangers indicates the square feet of surface  area  to which the fluid to be heated contacts. Also, full counter-flow of the fluids is achieved - see path of the fluids in the schematic below.

Heat exchangers
have been widely used in the solar industry for transferring heat from solar collectors to domestic hot water, space heating storage tanks, hot tubs, and swimming pools. Heat exchangers have also been installed on gas and oil fueled boilers. The range of their application has been from the model 2.0 used with 3 4'x8' solar collectors to the model 10.0 handling the output of 3 150,000 BTU per hour gas fired boilers. Some heat exchangers have been used for heat removal from cooling fluids in the construction industry.







Material: 304 Stainless Steel (standard) or 316 Stainless Steel (optional)
Fabrication: All T.I.G. Welded
Max Operating Temp: 500 F
Max Working pressure: 150 PSI




Note: In all drawings and graphs End designated A is fluid from the heat source, (from solar panel or boiler). End designated B is fluid to be heated (domestic hot water, water for space heating, swimming pool, hot tub or spa water, etc.)

 
Model HE 2.0 - Specifications and Performance Curves



Weight: 10 Lbs.         End connection:     A. 3/4" N.P.T.      B. 3/4" N.P.T.


Note: All BTU versus temperature graphs are for 
water to water and flow rate shown is for end A.
 

How to use graph:

For Example:
(Known Conditions)

Flow rate through End A = 5 GPM; Inlet Temp End A = 140 F; Inlet Temp End B = 55 F

Determine the temperature differential by subtracting the inlet temperatures (140 F - 55 F = 85 F). Locate 85 on  the bottom of the graph. Draw a line vertically until it intersects the 5 GPM line. Draw a line horizontally from the intersection point to the left side of the graph and read the BTU/HR. transferred.

This example would show 90,000 BTU/HR.




Note: When designing system flow rate 
through End B must be equal to or        
greater than flow rate of End A.  
          

How to use graph:

For Example:
(Known Conditions)

Flow rate through End A = 5 GPM; Flow Rate Through End B = 5 GPM

Locate 5 on the bottom of the graph and draw a line vertically until it intersects End A curve. Draw two lines horizontally from the points of intersection of each curve to the left side of the graph and read the pressure drop.

This example would show End A Pressure Drop = 3 P.S.I.     End B Pressure Drop = 1.5 P.S.I.


 
Model HE 3.5 - Specifications and Performance Curve


Weight: 12.5 Lbs.         End connection:     A. 3/4" N.P.T.      B. 1" N.P.T.








 

Model HE 5.0 - Specifications and Performance Curves



Weight: 14.5 Lbs.         End connection:     A. 3/4" N.P.T.      B. 1" N.P.T.








 


Model HE 10.0 - Specifications and Performance Curves


Weight: 29 Lbs.         End connection:     A. 1 1/4" N.P.T.      B. 1 1/2" N.P.T.