zozen boiler
Home Service FAQs Boiler basics How to define excess air ratio in an industrial boiler?

How to define excess air ratio in an industrial boiler?

02 Jun 2023

Excess air ratio is a term used to describe the amount of air supplied to the combustion process in a boiler compared to the theoretical amount required for complete combustion. It is defined as the ratio of the actual amount of air supplied to the combustion process to the amount of air required for stoichiometric combustion.

In an industrial boiler, excess air is supplied to ensure that all of the fuel is burned completely and efficiently. The excess air ratio is usually expressed as a percentage and can be calculated by measuring the oxygen (O2) concentration in the flue gas and comparing it to the theoretical O2 concentration required for complete combustion.

The optimal excess air ratio for an industrial boiler depends on various factors, including the type of fuel being burned, the boiler design, and the operating conditions. A higher excess air ratio can improve combustion efficiency and reduce emissions, but it can also increase energy consumption and operating costs. On the other hand, a lower excess air ratio can reduce energy consumption and operating costs but may result in incomplete combustion and increased emissions.

Therefore, it is important to carefully monitor and control the excess air ratio in an industrial boiler to balance combustion efficiency, emissions, and operating costs.

Related FAQs View More
Related news View More
  • ZOZEN Boiler's Reciprocating Grate Boilers Excel Overseas, Empowering Multiple Industries with Efficient Operation
    In recent years, as global energy demands continue to rise and environmental regulations become increasingly stringent, high-efficiency boiler equipment has garnered significant attention in international markets. As an industry-leading boiler supplier, ZOZEN Boiler has achieved repeated success in overseas markets through its self-developed reciprocating grate technology, providing customized thermal solutions for multiple industries. Numerous projects exported to countries including Kyrgyzstan...
    27 May 2025
  • ZOZEN Gas-fired Boilers: A Reliable Force Driving Green Upgrades in the Automotive Industry
    As a technological pioneer and quality benchmark in the industrial boiler field, ZOZEN Boiler, with profound technical expertise, outstanding innovation capabilities, and reliable product performance, has deeply integrated into the automotive industry supply chain, becoming a steadfast partner for many internationally renowned automotive companies in achieving green and intelligent manufacturing. ZOZEN Gas-fired Boilers: The Firm Choice of the Automotive Industry Geely Auto: WNS Series Boile...
    20 May 2025
  • Overseas Orders Surge: ZOZEN Boiler Supports Industrial Upgrading in Venezuela
    Recently, ZOZEN Boiler successfully exported multiple WNS series gas-fired steam boilers to Venezuela, serving the local paper-making and food processing industries. This achievement not only marks another major breakthrough for ZOZEN Boiler in the international market but also demonstrates the technological strength and competitiveness of Chinese manufacturing in the global industrial sector. By providing efficient, environmentally friendly, and intelligent boiler equipment, ZOZEN Boiler has in...
    13 May 2025

Find the Right Boiler For You

Name *

Email *

WhatsApp/WeChat

Products

Power/Capacity