Heat loss from flue gas: The boiler reduces heat loss by 75% compared to traditional single-unit boilers. In conventional single-unit steel tube boilers, the flue gas temperature is typically maintained above 150°C to minimize low-temperature corrosion and condensation on the tail heating surfaces. In contrast, modular boilers utilize corrosion-resistant cast iron materials for their heating surfaces, providing strong resistance to corrosion. Through optimized heat transfer design, the flue gas temperature is reduced to below 100°C (60°C to 80°C). As a result, modular boilers achieve a 75% reduction in flue gas heat loss compared to traditional single-unit boilers. Additionally, each modular boiler is equipped with a ventilation regulator. When a module is in operation, the ventilation regulator opens, and when the module is idle, it closes, preventing residual heat loss from the standby module. Furthermore, the furnace walls of each modular boiler are insulated to minimize heat loss from the combustion chamber. Actual measurements show that modular boilers save approximately 1% in fuel costs compared to single-unit boilers. **Features of Vanderley Gas Modular Boilers** 1. **Modular Design: Simple Structure, Flexible and Convenient Installation** The concept of modular boilers essentially involves breaking down a large single-unit boiler into several smaller units. Through simple parallel combination, modular boilers can achieve the capacity of any single-unit boiler in terms of steam tonnage. Therefore, modular boilers can replace various heating and hot water boilers with capacities below 10 steam tons commonly used today. In large boilers, the air-gas mixture is delivered into the furnace by a blower, which generates significant noise, causing sound pollution and deteriorating the working environment for employees. In contrast, modular boilers utilize atmospheric combustion, eliminating the need for a blower. As a result, they operate with very low noise levels, producing only a slight "whooshing" sound during combustion without any other noise. Most modular boilers use burners made of special aluminized steel, designed with aerodynamic processes to ensure highly efficient gas combustion. Actual tests have shown combustion efficiency exceeding 98%. Complete combustion reduces the nitrogen oxide content in the flue gas, minimizing environmental pollution. Gas modular boilers do not suffer from low annual thermal efficiency, load rate, or comprehensive annual energy utilization. This is because, based on the inherent characteristics of modular boilers, they can operate in a multi-unit coordinated control mode under the controller. Depending on parameters such as the preset heating temperature curve, indoor temperature, and the thermal inertia of the building, the system intelligently determines the number of boilers to start or stop based on outdoor temperature, achieving a near-unattended operation mode. During operation, the system ensures that each boiler operates at full load with high efficiency (above 91%). This effectively eliminates the widespread issues of low thermal efficiency, load rate, and comprehensive annual energy utilization, delivering significant economic and social benefits.