Practical Guide To Wood Boiler System 2023 | Efficient And Cost-Effective

Being an industrialist, you know the market is filled with thousands of high-efficiency boilers. However, the problem is that they are either too expensive or give off harmful gases. That might be one reason why you are frustrated and wondering if you could get an affordable, high-efficiency boiler. What if I told you that a wood steam boiler system is your answer?

A wood boiler system offers you the easiest operation. Plus, you can choose from a wide variety of fuels. The list of its benefits goes on. But before diving further, let’s discuss what this article holds. You’ll walk on a journey from learning the basic workings of the boiler to its types and wood steam boiler efficiency. And yes, you’ll get answers to your most bugging questions. Let’s get started.

Wood Boiler System: Definition and Working Principle


A wood-boiling system is a heating device that uses renewable resources to convert firewood into heat energy. 

It transfers the heat energy from burning wood to water using its efficient combustion technology and control system. Coming to the parts of the boiler, it comes with a combustion chamber, a chimney, a control furnace, a control system, etc. With the help of these components, the boiler offers high efficiency and safety.

If you’re considering a wood pellet steam boiler system for your industry, pay attention to the type of equipment, application, fuel type, and combustion efficiency of the boiler to ensure it aligns with your requirements.

Working Principles of Wood Boiler System

A wood boiler system, as you might have guessed, burns wood to make hot water or steam. The process starts by loading wood into the firebox and igniting it. This heat is then transferred to the water through the heat exchanger. 

The process continues when water flows through pipes to the radiators and heat panels. This water returns to be recycled or used again once it cools down. You must remember that the water must be free from impurities like metal for maximum performance. The amount of heat it offers ranges from 1300 to 1900 degrees Celcius.

Structure of A Wood Boiler System

The structure of the wood fired boiler system includes the following:

  • Combustion Chamber

This is where the action begins. The best part is that you can choose the furnace’s design. You can also choose the fuel of your choice like coal, firewood, rice husks, etc. The goal is to make the system sturdy and stable and ensure its efficiency while burning fuel.

  • Radiant Heat Collector

This is made from cast steel tubes and captures the heat emitted during the furnace operation.

  • Ash and Slag Disposal

It ensures effective slag disposal. The screws are smoothly built into the wood-burning boiler. This makes sure ash and slag are handled efficiently, maximizing your energy efficiency.

  • Furnace Body

The boiler’s main features are numbered Pass 1, 2, and 3. Here, 1 is the furnace tube, while 2–3 are the fire tube beams. Then we have other pipes playing their part in managing the main steam valve. These are the safety steam valve, air release valve, blowdown, water supply line, and control signal assembly.

  • Deduster 

Like other boilers, a wood boiler system consists of a dust cleaner. Its goal is to get rid of dust particles to ensure environmental protection and energy conservation.

  • Dust Suppression Tank

After the dust is rounded up, it moves to the water tank. Here, a gentle water spray settles the dust and makes the air cleaner.

Types of Wood Boiler Systems

What type of wood boiler should you choose for your industry? Let’s discuss and find out the answer.

  • Log Boiler

A log boiler offers three main features

  • It’s affordable
  • Easy to use and compact
  • Offers efficiency of up to 85%
  • Pellet Boiler

A pallet boiler offers the longest lifespan. Let’s discuss its main features

  • Efficiency of up to 95%
  • Quiet and comfortable operation
  • Tank for automatic feeding
  • Wood Chips Boiler

A wood chip boiler offers you the following

  • Efficiency of up to 90%
  • Similar to a pallet boiler but has a silo for your convenience.

Technology of Wood Boiler System

You’ll find different technologies for woodchip boiler systems. But the most common ones are listed below.

Push Burning Technology

Push-burning technology is common among wood-burning boilers because it can handle different firewood shapes, sizes, and moisture levels. And if you’re still confused about why it’s so common, this technology can efficiently use firewood with high humidity and low heat content.

Fluidized Bed Technology with a Smoke Circulation System

This is your way to go if you’re looking for a technology that offers great flexibility. Its smoke circulation principle allows easy adjustments to the chamber temperature according to your needs. In other words, this acts as a thermostat for your boiler. Meanwhile, it allows stable operation even when you change the type of fuel used in your boiler.

Selecting the Right Firewood for Your Business

Choosing the right firewood for your wood boiler system is your first step toward achieving high efficiency. There are two categories of firewood. Let’s take a look

1. Hardwoods

These include oak, beech, ash, charm, walnut, chestnut, and fruit trees. These woods, except chestnut, offer slower and more reliable combustion. This makes them an ideal choice for sustained heating, and hence, we highly recommend them for your industrial settings.

2. Coniferous and Softwoods

These include fir, spruce, larch, willow, and poplar. They are the best option when you’re looking for rapid combustion and a rapid temperature rise. Yet, you need to take precautions, as they degrade rapidly if not stored properly. While softwoods are loved for their rapid temperature rise, we must ensure their proper management in an industrial setting.

Can you burn wet wood in a wood boiler?

Industrial Gas Boiler Price

I know this question has been bugging you for quite a while now. Let’s address this now. Burning wet wood is never recommended. And there are two reasons why.

Environmental Impact

Burning “green” wood releases toxins and, hence, negatively impacts the environment. This makes the wood boiler system less environmentally friendly.

Economic Factor

Wet wood doesn’t provide as much energy as dried wood. In fact, it offers only about half as much energy, making it less cost-effective.

Practical Consideration

Consider if you’re using the right wood or not. High-performance wood boiler systems won’t reach their full potential if you use fresh wood. Plus, your equipment will get dirty and may also deteriorate over time. Now, just like any other boiler, you’d want to know how to use a wood boiler system. Well, there are four steps involved before you get your boiler working.

4 Steps Of Using Wood Boiler Systems

This can be divided into two categories: small wood fired steam boiler and wood fired hot water boiler. Let’s discuss the steps to understand the whole process.

1. Installation

First things first, you’d want to select the right size for your boiler if you want to get the most out of it. Then, for installation, we suggest you get help from experts to ensure things go smoothly. This marks the first phase of using a wood boiler system.

2. Fuel preparation

The best wood for your boiler should be dry and appropriately sized. Make sure you have your wood ready when you’re turning your boiler on for the first time. Also, if you’re new to wood burning, we suggest you talk to the experts and learn how to prepare and store wood for maximum results. 

It will help you make better decisions and save time and money. Otherwise, you will waste time trying to figure things out yourself.

3. Operation

Hot water travels to radiators and pipes once the thermostat signals it to generate heat. The cool water returns to be recycled once heated. So when the boiler produces hot water, it’s time for wood refills. Generally, you have to check your wood boiler system at least twice a day. As for how many times you have to clean the boiler, it depends on the amount of wood it burns. 

4. Maintenance

Most of us tend to ignore this part. However, it’s the most important one if you want to maximize boiler efficiency and ensure its long lifespan.

First, your boiler needs cleaning and care. Regularly remove the ashes with rakes and brushes. Luckily, modern wood boilers don’t create creosote, so you don’t need to spend extra hours cleaning them.

Moreover, some boilers allow you to clean the heat exchange with a simple lever swipe, saving you precious time and keeping things tidy. Keeping your boiler’s heat exchange surfaces clean ensures you achieve the highest efficiency and sustain it for longer.

Lastly, make sure you never skip an annual check-up. This usually involves thorough cleaning, adjusting the doors for tight gaskets, and visually inspecting the worn parts and maintaining them.

All these steps ensure your boiler remains in good condition.

Efficiency Of Wood Boilers

chain grate steam boiler

There are many factors that wood pellet steam generator depend on for optimum performance. Some of them include the type of wood used, the quality of the boiler, and the weather conditions of the place your boiler is placed.

As for efficiency, wood boilers can achieve an efficiency of up to 90%. However, this is only possible when you use high-quality hardwoods. And if you use softwoods, keep in mind that your boiler efficiency will be affected.

Other factors that influence efficiency are the moisture content of the wood used and its operational temperature. If your wood moisture level is high or you’re burning the wood below optimal temperature, your boiler won’t have good efficiency.

Moreover, if you want your wood boiler system to be efficient, make sure you are using high-quality wood. For maximum results, stick to the routine cleaning and maintenance schedule.

Lastly, if you want to reduce your manual input, consider using an automated feeding system for a proper wood supply. This won’t only reduce your efforts but also increase your efficiency.

How long does a wood boiler last?

Just like its efficiency, the wood boiler’s lifespan depends on many factors. These include the quality of the boiler, the type of boiler used, and the maintenance practices you’re using. However, with proper care and maintenance, you can have your boiler for as long as 20 years.

Wondering how you can increase the life span of your boiler? You can help yourself with some tips.

  • Burn only dry, well-seasoned wood. Using wet or green wood produces more creosote. This results in reduced efficiency in the wood boiler system.
  • Regularly clean the ash and soot from the firebox. Soot and ash can build up and insulate the firebox. This causes the boiler to be overheated, which damages the boiler.
  • Inspect the boiler for cracks or leaks regularly. In cases of leaks, water can damage different parts of the system.
  • Have the boiler serviced by a qualified technician annually. Taking help from technicians can be beneficial. They can check the boiler for any problems and ensure it operates safely and efficiently.

Wood Boiler System vs Electric and Gas Boilers


Electric boilers are better than wood boiler systems. Let’s understand why

  • Safety and Reliability

Electric boilers are safer than wood boilers. This is because they don’t produce open flames or high temperatures, ensuring safe and reliable operation.

  • Clean Energy

Since we use wood as a fuel, wood boilers produce unwanted residue. In contrast, electric boilers use clean energy, generating no waste gas or residue during operation.

  • Intelligent Control

Electric boilers are equipped with intelligent control systems. These offer automated temperature and pressure adjustments, ensuring user convenience.

  • Energy Costs

Since electric boilers work on electricity, they have higher energy costs. Hence, they are not the cheapest option available.

  • Maintenance Requirements

Electric boilers require regular maintenance to ensure consistent and efficient performance. Therefore, you’ll have to invest more time into electric boilers.

Over to You

To conclude, a wood fired steam generator and boiler system offers you an efficient, eco-friendly, and cost-effective heating solution for your boiler needs.

Now, one of the main things you have to consider to achieve high efficiency is firewood. The next thing is maintenance. Ensure you’re properly cleaning your boiler and doing routine annual check-ups to make your wood boiler last longer.

Lastly, you can’t have a fully functional, high-efficiency boiler unless you consider buying from authentic manufacturers. With so many companies claiming to sell the best boilers, making the decision can be hard. 

To remain on the safe side and save you time and money, you can surely contact us. As a professional wood fired steam boiler supplier, our boilers are more than cost-effective. They’re reliable, efficient, and offer peace of mind. Don’t just take our word; experience it. Contact us today and let’s elevate your heating game!

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