Home
Service
FAQs
FAQ of gas-fired(oil-fired) boilers
What is the general thermal efficiency of natural gas boilers?
What is the general thermal efficiency of natural gas boilers?
20 May 2022
The thermal efficiency of boiler refers to the percentage of effective heat in the heat delivered by fuel. The thermal efficiency of boiler is one of the important indexes to reflect the energy efficiency of boiler. Many users often ask, what is the general thermal efficiency of natural gas boilers? In this page, ZOZEN Boiler will analyze the thermal efficiency of natural gas boiler and introduce the calculation method of thermal efficiency.
What is the general thermal efficiency of natural gas boiler?
According to the industrial boiler energy efficiency limit value and energy efficiency grade GB24500-2009, the specific answers to the general thermal efficiency of natural gas boilers may be 88%, 90%, 92% and 94%. The thermal efficiency of ZOZEN natural gas boiler can reach over 98%, which is generally superior to the market level.
How to calculate the thermal efficiency of natural gas boiler?
Generally, there are two methods to calculate the thermal efficiency of natural gas boilers: positive balance method and reverse balance method:
Positive equilibrium method
What is the general thermal efficiency of natural gas boiler = effective utilization of heat/all heat released by fuel * 100% = boiler evaporation * (steam enthalpy-feedwater enthalpy)/fuel consumption * low calorific value of fuel * 100%
Anti-equilibrium method
Generally, what is the thermal efficiency of natural gas boiler = 100%-sum of the percentages of various heat losses = 100%-heat loss of exhaust gas-heat loss of incomplete combustion of gas-heat loss of heat dissipation.
Related FAQs
View More
Related products
View More
-
WNS series gas-fired (oil-fired) steam boilerLive Chat1-20 t/h0.7-2 MPa -
ZZ series gas-fired (oil-fired) power plant steam boilerLive Chat20-130 t/h3.82-5.4 MPa -
SZS series gas-fired (oil-fired) steam boilerLive Chat2-110 t/h1.25-5.3 MPa
By boiler medium
By boiler structure
-
Email us
-
WhatsApp: +86 18861589035
WeChat: +86 13506150756
Live Chat
Related news
View More
-
On the thriving industrial land of Shandong, the continuous demand for thermal energy supply from enterprises drives the transformation of the boiler industry. With profound technical expertise and ongoing innovation, ZOZEN Boiler remains at the forefront of providing high-quality, adaptable boiler models for various industries. ZOZEN Boiler Provides Tailored Boiler Solutions for Shandong Industries Looking back, the cooperation projects with Shandong Luhua Group and Shandong...29 Jul 2025 -
In the industrial zone of Wen’an County, Xinghua Cable Co., Ltd. is making steady progress on its project with an annual production capacity of 11 million meters of wires, cables, and accessories, backed by an investment of RMB 520 million. Upon completion, the project is expected to create over 150 jobs and generate annual sales revenue of RMB 800 million, demonstrating promising prospects. As a key supplier of thermal energy equipment, ZOZEN Boiler is quietly supporting the development o...22 Jul 2025 -
On March 20, 2025, the Guizhou Jinyuan Zhijin “Replacing Small Units with Large Ones” Relocation Project (2×660 MW), under State Power Investment Corporation, successfully achieved the first ignition of its boiler. This project replaced traditional oil-fired ignition fuel with liquefied natural gas (LNG), setting a new precedent for employing clean energy in 660 MW ultra-supercritical “W” flame boilers. As a key equipment supplier for this project, ZOZEN Boiler prov...15 Jul 2025
