The method of selecting heat exchangers for coal-fired or other fuel furnaces - which may include solid fuel, pellets, biomass, wood - follows similar principles to selecting a heat exchanger for a gas boiler. This is easily explainable because these heating devices operate at similar supply temperatures and in similar temperature differentials. Heat exchangers from the Ba-32 series are excellent for coal-fired furnaces - very often (specifically in the case of this series of heat exchangers), a simple method is used, which involves calculating the number of plates for the furnace capacity that can be serviced by a particular heat exchanger. For example, a 20-plate heat exchanger Ba-32-20 for a 20 kW furnace, a 30-plate heat exchanger for a 30 kW furnace, and so on.
However, it should be noted that this very simplified method applies only to Ba-32 models (other series have different unit plate surfaces).
Ba-32 Heat Exchangers - How to Connect a Heat Pump to Central Heating?
Heat pumps are decidedly more demanding heat sources, operating at lower temperature differentials, and the selection of a heat exchanger is quite different from traditional boilers, etc. Nevertheless, larger heat exchangers from the Ba-32 series are a very good choice - they can be safely used in configurations with glycol (often required by monoblock pumps when there is a risk of power interruptions, which could pose a threat to our pump and result in a lack of defrost).
When separating pumps filled with glycol, it is advisable to use up to 1.5m² of plate surface per 10 kW of heat pump capacity if it is a radiator system operating at an average of 50 degrees Celsius. However, in the case where there are no radiators in the building and all the heat is directed to underfloor heating manifolds (systems based solely on underfloor heating), due to lower supply temperatures, this multiplier should be increased even up to twice.
Ba-32 Heat Exchangers - What they should not be used for?
Ba-32 heat exchangers are perfectly optimized for a wide range of liquid-to-liquid applications - in other words, they are heat exchangers for liquid media such as water, glycol, mineral oil, etc.
However, the situation is different when it comes to gaseous media or refrigerants, which tend to evaporate (change from liquid to gas state quite rapidly during heating). These are so-called high-pressure media, requiring heat exchangers adapted to such demands. Ba-32 series heat exchangers with a working pressure of up to 30 bar should not be used for refrigerants, cooling agents, and gases.
If you are looking for heat exchangers of similar size to Ba-32 but for the above-mentioned gaseous media, check out:
Ba-32 plate heat exchangers: Key series in our catalog
