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
-
As global attention toward sustainable development intensifies, green and eco-friendly practices have become the main theme across all industries. For traditionally high-energy, high-emission sectors, technological innovation is essential to achieve clean production and unlock new growth. The plastic foam industry, a vital part of industrial manufacturing, has long faced the dual challenges of high energy consumption and environmental pressures. The emergence of biomass boilers offers a new gree...17 Jun 2025 -
With the ongoing advancement of the “Belt and Road” Initiative, economic and trade cooperation between China and Kyrgyzstan has become increasingly close. In February 2025, the two countries announced the launch of negotiations on a service trade and investment agreement, injecting new momentum into their bilateral collaboration. Against this backdrop, Chinese industrial equipment is making its way into Kyrgyzstan, helping local businesses grow—ZOZEN Boiler stands out as an exe...10 Jun 2025 -
ZOZEN Boiler Showcases Multi-Dimensional Energy Solutions at Serbia’s TOPS 2025 Scientific SymposiumFrom June 2 to June 3, 2025, the TOPS 2025 Scientific Symposium, hosted by the Serbian Heating Association, was held in grand fashion. As one of the most influential events in the European heating industry, it attracted leading international brands such as Weishaupt, Bosch, and KSB, with a collective focus on cutting-edge technologies in gas and biomass boilers. In light of rising energy costs, biomass boilers, with their outstanding cost-saving potential, became a hot topic of discussion. As th...11 Jun 2025
