Briquettes, often called "Bio-Coal," are made by compressing agricultural waste (like sawdust, groundnut shells, or bagasse) into dense, uniform logs. They have a higher calorific value and more consistent burning properties than raw wood.

The primary driver is Cost Savings. Solid biomass fuels are significantly cheaper than fossil fuels. Depending on your location, switching to wood or briquettes can reduce your operational heating costs by 60% to 80%.

Yes. Our furnaces are designed with "Multi-Fuel" flexibility. You can use wood logs, briquettes, coal, or agro-waste pellets depending on seasonal availability and market price.

Fuel should be stored in a dry, covered area. Briquettes, in particular, can absorb moisture from the air, which lowers their heating value and can cause them to crumble. Wood logs should be seasoned (dried) to ensure maximum heat output.

Our boilers typically feature a Vertical or Horizontal Three-Pass design. This ensures that the hot gases transfer their energy to the water over a large surface area, maximizing heat recovery.

Our standard units achieve a thermal efficiency of 78% to 82%. By integrating an Economizer to pre-heat the return water, you can push the efficiency even higher.

We offer two options:

• Manual Firing: Best for wood logs; requires an operator to feed fuel.
• Automatic Firing: Equipped with a screw feeder or hopper for briquettes and wood chips, allowing for "set-and-forget" operation.

These are "Low Pressure" systems designed to provide hot water at 90°C to 95°C. They are not intended for steam generation, making them simpler and safer for process heating.

Solid fuels produce ash. Our boilers feature large, easy-to-clean ash pits. For emissions, we provide Cyclonic Dust Collectors to ensure that the smoke exiting the chimney meets environmental norms.

• Food Processing: For pasteurization and kettle heating.
• Textiles: For washing and dyeing at moderate temperatures.
• Plywood: For heating glue spreaders and dryers.
• Hospitals & Hotels: For centralized hot water and laundry.

Yes. By using a water-to-air heat exchanger (Radiator), the hot water from the boiler can provide clean, hot air for drying grains, spices, or chemicals.

Typically, hot water boilers (below 100°C) are Non-IBR. This means no annual government inspections and no requirement for a high-salaried certified boiler attendant.

• Pressure Relief Valve: Prevents pressure buildup.
• High-Temp Cut-off: Shuts off the fan/feeder if water gets too hot.
• Fusible Plug: An extra safety layer in the furnace to prevent overheating.

Unlike gas boilers, wood-fired units produce soot. We recommend cleaning the smoke tubes once a week with a wire brush to maintain high heat transfer efficiency.

With proper use, our high-quality refractory lining typically lasts 3 to 5 years before needing minor repairs or patching.

Pricing is based on capacity (kcal/hr) and whether it is manual or automatic. Estimated 2025 rates at indianboilers.com are:

• Small (1 Lac – 2 Lac kcal/hr): ₹1,000,000 Lakh.
• Medium (5 Lac – 10 Lac kcal/hr): ₹1,000,000 Lakh.
• Large (20 Lac+ kcal/hr): ₹15 Lakh and above.

Due to the massive difference in fuel prices between Diesel/Gas and Wood/Briquettes, most clients see a full payback of the equipment cost within 6 to 10 months.

The main factors are the Kcal/hr capacity, the addition of Automatic Fuel Feeding, and the type of Pollution Control (Dust collectors) required by your local pollution board.

Visit indianboilers.com and specify your required temperature and fuel availability. Our team will provide a customized proposal including estimated fuel savings for your specific process.