December 2001

Special Report: Plant Utilities

Optimize energy efficiency of HRSG

With a better understanding of temperature profiles, plant engineers can increase steam production and minimize losses

Ganapathy, V., Consultant

When optimizing the efficiency of heat-recovery steam generators (HRSGs,) fully understanding the temperature profiles of these units is crucial. Gas turbine HRSGS are unique and pose peculiar problems as compared to conventional gas/oil-fired boilers when calculating efficiency or steam output. For conventional oil/gas-fired steam generators or boilers, one can do heat balances, efficiency calculations and fuel estimates by assuming an exit-gas temperature of 300°F to 340°F from the steam generator and assuming that the feedwater is at 220°F to 250°F irrespective of steam pressure. However, these assumptions are often not thermodynamically valid with HRSGs.

Log in to view this article.

Not Yet A Subscriber? Here are Your Options.

1) Start a FREE TRIAL SUBSCRIPTION and gain access to all articles in the current issue of Hydrocarbon Processing magazine.

2) SUBSCRIBE to Hydrocarbon Processing magazine in print or digital format and gain ACCESS to the current issue as well as to 3 articles from the HP archives per month. $409 for an annual subscription*.

3) Start a FULL ACCESS PLAN SUBSCRIPTION and regain ACCESS to this article, the current issue, all past issues in the HP Archive, the HP Process Handbooks, HP Market Data, and more. $1,995 for an annual subscription.  For information about group rates or multi-year terms, contact J'Nette Davis-Nichols at Jnette.Davis-Nichols@GulfEnergyInfo.com or +1 713.520.4426*.

*Access will be granted the next business day.

Related Articles

From the Archive

Comments

Comments

{{ error }}
{{ comment.comment.Name }} • {{ comment.timeAgo }}
{{ comment.comment.Text }}