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Welcome
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Coulstone Landwerke takes its name from the name given to the site by French trappers. We're surrounded by oak-hickory forest in the middle of the Ozarks in Dent County, Missouri. We believe our rural base to be very compatible with the promotion of renewable fuels. Many people feel just a bit more satisfied by having the ability to provide their own fuel; in this case wood, or possibly corn. Perhaps its related to the self-reliance that was generated by what's often called the "pioneer spirit." Today, there are also many financial incentives driving the search for fuels that are both economical, and locally available. We strive to provide quality equipment, backed by quality service and design perameters. Coulstone Landwerke is the HeatSource1 distributor for Arkansas, Missouri, southern Illinois, and eastern Oklahoma.
Why have an Outdoor Furnace System?
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Putting the furnace outdoors eliminates many of the drawbacks once associated with burning wood. Since the wood isn't brought into the building, there's no bark, ash, or bugs/insects brought into the building. Smoke is no longer an issue inside of the building, and with central ductwork the air filter will be able to maintain much cleaner air within the building.
There can't be an interior flue fire because there's no interior flue. The fire hazard is eliminated, and this is reflected in the removal of the wood surcharge from homeowners insurance policies as long as the insurance companys' minimum setback distance is met.
Placing the furnace outdoors allows the owner to contemplate using the furnace for multiple tasks. Setting the unit between buildings limits heat loss from the furnace to the building, while allowing the heat source to be "tapped" for multiple functions: home heating while providing domestic hot water, additional buildings, pools, spas, greenhouses, shops, barns, etc..
Having the furnace outdoors allows you to organize your fuel storage wherever is most convenient for the owner. While some owners prefer to display their furnaces quite prominently, others place a privacy fence as camouflage!
Why should it be hydronic?
Hydronic heating systems aren't new; the Romans used them! Of course the use of lead in their systems may have contributed to the demise and fall of the Roman Empire. What has really changed is the materials available for hydronic systems. Steel alloys, digital electroncs and low-voltage circuits, and cross-linked polyethelene tubing have changed the hydronic world.
Using water as a means of heat transfer is based upon availability, suitability, and cost. Other fluid combinations are perhaps more efficient, but are limited because of cost, availability, and environmental concerns.
The alternative to water is air. Once you move the furnace out of the building you need a way to transfer the heat back into the building with minimal heat losses, and eliminate the hazard of fire. Water can hold much more heat than air when comparing carrying capacity by volume. Air ducts provide a means of transmitting combustion(fire) from one point to another. Within the home using air is fine because you're within the insulation envelope and probably want to filter the air you breathe anyway. Meanwhile, water doesn't transmit fire!
The unit used to measure heat is the btu(British Thermal Unit); a btu is the heat necessary to raise the temperature of one pound of water by one degree. In hydronic circuits you will often encounter the btu when refering to capacities of different types of equipment. Water's ability to carry heat remains fairly constant, and is controlled by the means of transmission. The tubing diameter, speed of flow, and beginning water temperature, will affect all of the components within the circuit.
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