B U L L E T I N

H.P. Utility Plant Energy Efficiency Increase Through Improved Heat Transfer

The following is a technical information bulletin to our customers to keep you informed as to what has been happening in the area of energy efficiency gains through improved heat transfer.

We are pleased to present a proven option to help you address the issue of high fuel costs with emphasis put on system efficiencies. Chem Tech Services Limited, in conjunction with Northland Consulting Limited of Halifax, Nova Scotia, have developed a safe, economical procedure for deposit removal from H.P. Feedwater Heaters.

Based on the use of a proprietary combination of organic acids, this procedure is effective in the removal of tightly-bound iron oxides from the Feedwater side of H.P. Heaters. A major Atlantic Canadian utility plant recently used our procedure to clean several of their H.P. Heaters achieving an 8 - 10% efficiency increase across the Heaters. This increase in efficiency translates into a realized payback time of 30 - 60 days per 150 MW Unit operating at 100% load over 200 days.  

This is a readily achievable solution as the cost of the cleaning is only a fraction of the potential savings.

The cleaning time is approximately 48 hours. Set-up and re-assembly time is in the range of 48 - 96 hours, thus making the total outage on the Heater only 4 - 6 days. Our unique 'tie-in' connection method on the Heater's Inlet and Outlet lines negates the need for any Feedwater line cutting or welding while still achieving flowrates through the Heater sufficient for deposit removal.