Home Chinese Français Contact

Cogeneration Comparison
DDI "Rectangular, Square , Cube" TM

Don't Waste the Waste: Use DDI Heat Recovery

Since 1980

1) What's New
2) Summary
3) Publications
4) Advertisment
5) Viscosity Influence
6) Technical Info
7) Advantages
8) Comparisons
9) Price Comparison
10) Photos
11) Representatives
12) Energy Savings
13) Feasibility Form
14) Other Products
15) Behind the Product
16) Slide Show
17) Cogeneration
18) Compare to Spiral
19) Vs. "Tube & Shell"
20) Indirect Heating
21) References
22) Quote Request
Downloads

Subject: Cogeneration

 An independent article from WaterWorld (April 2003). 

A) For Cogeneration - They will spend 245,000 $ to save 30,000 $ per year.

Compared to DDI “Cube” or “ Square” Heat Exchanger that will cost (for example) 97,900$ (with installation) and will save about 366,000 $ PER YEAR as Sludge to Sludge Heat Recovery system.

B) DDI Heat Exchanger will probably have less maintenance cost then the Micro-Turbines in the Cogeneration solution. 

C) Market has over 3,300 Anaerobic Digestion Waste Water Treatment Facilities,  (Maybe x 3 Heat Exchangers). So many, many WWTF can use Heat Recovery.  

D) DDI estimated cost per 1 million BTUH at Minimum 7 $ only. (Now it is much higher). See "Energy Saved by using Heat-Recovery" program on the web 

This study claims cost at 24.3 $ per 1 million BTUH

 (1 KWH = 3415 BTUH
292.8 KWH = 1 million BTUH
Cost per KWH  2.46 +6.37 = 8.83 cents
292.8 x 0.083 $ / KWH = cost per 1 million BTUH = 24.3 $ = cost for 1,000,000 BTUH

E) Cogeneration will generate ONLY 41 % of Annual Energy demand in the plant. 
But with DDI Heat Recovery System installed they can achieve much more.

Counter Provided by www.digits.com
Copyright © 2004 DDI-Heat Exchangers Inc.
Last modified: 10/06/06