Heat Storage - Schmid UTSK-180 Operating Instructions Manual

2 Description UTSK
To lower dust emissions even further, the gases can be additionally cleaned by a down-
stream filter system. The flue gas fan is installed in accordance with the filter type on the
inlet or outlet side of the filter.
The flue gas fan draws off the combustion gases through the boiler and the multi-
cyclone and transfers these to the flue gas pipe that leads to the stack. An underpressure
measurement system combined with an electronic control unit regulates the speed of
the fan to ensure the underpressure required in the combustion chamber.
Fig. 3
2.2

Heat storage

The locally applicable regulations for the design of the heat storage system for auto-
matic wood boilers must be observed.
In Switzerland, according to the Swiss Ordinance on Air Pollution Control (LRV) Annex
3, Section 523, automatic wood boilers with a nominal heat capacity of up to 500 kW
must be equipped with a heat storage tank with a volume of at least 25 litres per kW of
the nominal heat capacity.
Schmid AG generally recommends installing a minimum heat storage volume of 30
litres per kW of the nominal heat capacity of the largest boiler, regardless of the boiler
size.
D-18
Cross-section of the underfeed combustion system
Underfeed grate UTSK
1.10 en