DDI "Rectangular, Square , Cube" ^TM

^{Don't Waste the Waste: Use DDI Heat Recovery}

^{Since 1980}

Welcome to DDI's new website!  This website will feature our Heat Exchangers. Take a look around, and don't hesitate to contact us with any questions or queries you may have.

Some files on our site will require Adobe Acrobat, which can be downloaded here.

NEW FEATURE:

Comparing DDI “Cube” or “Square” Heat Recovery to competition. 

Since DDI’s Heat Recovery System has a Minimum Gap of 2.75" on both sides (to avoid blockage) it makes no difference which side has Water or Sludge, or even both sides could have Sludge (for Heat Recovery).  

We achieved our NON-PLUG design (compared to the Spiral design) via large GAPS, NO OBSTACLES and ROUND CURVES. 

DDI has achieved the possibility of having THE SAME FLOW in both sides (for Heat Recovery), compared to Tube and Shell exchangers which cannot do it (see the SURFACE Heat Transfer area and FLOW area Comparisons). 

DDI’s overall size is SMALLER then the Tube and Shell and does not require Grinders or Macerators (adds 200,000$ in 10 years) as the Spiral design does. 

We have had 12 Engineers working for many years to come up with this design and to TEST it in real life with working units.

Our Mission

To provide high quality Heat Exchangers with our unique, efficient, non-pluggable design.
Our Heat Exchanger is the ONLY efficient heat-recovery exchanger available.

Company Profile

DDI was founded in 1980 and has been providing quality service and reliable solutions ever since. DDI is a well established Canadian company experienced in the design and manufacturing of plate type heat exchangers specifically suitable for applications in heat recovery from liquid waste materials containing large size solids such as municipal sludges and many other processes.

"I am pleased to confirm that the two heat exchangers in operation for the last five years at our wastewater treatment plant are always operating without any maintenance and are still working within the original specifications. We haven't experienced any malfunctions since we put them in operation."

Antoine Laporte
Division Chief - Division of Wastewater, City of Repentigny

Contact Information

Telephone

514-696-7961

FAX

514-696-8344

Mailing address

305 Baffin, Dollard-Des-Ormeaux (Montreal), Quebec Canada H9A3G4

U.S. Address (Please send mail to the mailing address above)

2201 South Ocean Drive Suite 708, Hollywood FL 33019 USA

Electronic mail

General Information:

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Copyright © 2004 DDI-Heat Exchangers Inc.
Last modified: 02/19/08