Skip to main content

Heat & Material Balances

Buy Article:

$17.50 plus tax (Refund Policy)

Or sign up for a free trial


Heat and material balances for sludge incineration can be divided into two (2) broad categories:

Autogeneous - no auxiliary fuel required

Non-autogeneous - auxiliary fuel required to during steady state operation at desired temperature and XS air.

The method of solution for these two problems will be shown by way of the illustrative examples below.

As shown in the co-paper on Combustion Fundamentals, the enthalpy of flue gas is not a linear function. The literature contains several mathematical expressions that can be used to express this change over a given range of temperatures. For this Manual of Practice, straightforward fourth power polynomial equations to a 60°F base have been selected as the most functional. Unfortunately, neither these equations, nor the other enthalpy equations found in the literature, lend themselves to a direct solution when trying to calculate a temperature from an enthalpy value. The easiest and most common way to solve this problem is by using a trial and error solution. Before starting the first illustrative example, the Table of Molecular Weights from Combustion Fundamentals is repeated below for reference.

Document Type: Research Article


Publication date: 2008-01-01

More about this publication?
  • Proceedings of the Water Environment Federation is an archive of papers published in the proceedings of the annual Water Environment Federation® Technical Exhibition and Conference (WEFTEC® ) and specialty conferences held since the year 2000. These proceedings are not peer reviewed.

    A subscription to the Proceedings of the Water Environment Federation includes access to most papers presented at the annual WEF Technical Exhibition and Conference (WEFTEC) and other conferences held since 2000. Subscription access begins 12 months after the event and is valid for 12 months from month of purchase. A subscription to the Proceedings of the Water Environment Federation is included in Water Environment Federation (WEF) membership.

    WEF Members: Sign in (right panel) with your IngentaConnect user name and password to receive complimentary access. Access begins 12 months after the conference or event
  • Subscribe to this Title
  • Membership Information
  • About WEF Proceedings
  • WEFTEC Conference Information
  • Learn about the many other WEF member benefits and join today
  • Ingenta Connect is not responsible for the content or availability of external websites
  • Access Key
  • Free content
  • Partial Free content
  • New content
  • Open access content
  • Partial Open access content
  • Subscribed content
  • Partial Subscribed content
  • Free trial content
Cookie Policy
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more