In­no­va­ti­on from Schmid – the con­trol re­vo­lu­ti­on ad­ap­ti­ve

Published: Last updated:

General

Re­vo­lu­ti­on ad­ap­ti­ve – au­to­ma­tic de­tec­tion of fu­els and con­trol of the fur­nace

Video Deutsch  Video Englisch  Video Französisch

Chan­ging fu­els – no ma­nu­al re­ad­just­ment of the sys­tem.

As a ma­nu­fac­tu­rer of ef­fi­ci­ent wood boi­lers, Schmid en­er­gy so­lu­ti­on stri­ves to de­ve­lop sustainab­le en­er­gy so­lu­ti­ons to ope­ra­te hea­ting sys­tems as eco­no­mi­c­al­ly as pos­si­ble.

Over the past three years, a team from Schmid has developed the new Revolution adaptive control system. It enables the automated operation of wood boilers with different fuels.

Chan­ging fu­els in­flu­ence com­bus­ti­on and ef­fi­ci­en­cy

Especially heating networks are often confronted with variable fuel qualities. The season, the current weather, and the availability of biomass all affect the water content and calorific value of the fuel.
affect the water content and calorific value of the fuel. The change from industrial wood to forest wood can account for an increase in water content from 10 % to
60 %. This affects the combustion temperature, fire performance, and combustion behavior on the grate. To ensure that after a fuel change there is still
complete burnout and maximum efficiency can be achieved, the combustion settings must be readjusted.

Au­to­ma­tic tracking of the firing set­tings

The new Revolution adaptive control system detects the fuel quality and regulates the boiler’s set output automatically, without manual intervention. This is done
based on measurement of the fuel water content, the heat output generated, the combustion temperature and the current grate occupancy. A permanently
low residual oxygen content in the flue gas is maintained and thus the target output is always achieved. The flue gas recovery and air distribution are automatically adjusted
and the glow bed is kept constant. This has a positive effect on efficiency, fuel consumption, emissions and wear.

Less ef­fort for ope­ra­tors

Incorrect combustion settings lead to reduced performance, increased emissions and reduced efficiency. This leads to faster wear
of grate and the combustion chamber. Since the times for boiler readjustments cannot usually be planned precisely due to the dependencies of the fuels, the boilers must be adjusted regularly, even at night.
Since the timing of boiler readjustments cannot usually be planned precisely due to the dependence of fuels, the boilers must be monitored regularly by the plant maintenance staff, even at night. Until now, this was the only way to avoid incorrect settings. Revolution adaptive takes over this task. For the operator and the plant maintenance new possibilities arise to ensure the economic efficiency of the plant.
efficiency. The procurement of biomass, the operation of the heating system and the planning of working hours become easier.

 

Ad­van­ta­ges at a glance

Less ef­fort for ope­ra­tors

  • Automatic tracking of target outputs in the event of changing fuel quality
  • No Manual intervention to readjust grate movement, air distribution and flue gas recirculation when fuel is changed

Op­ti­mi­zed com­bus­ti­on pro­cess

  • Constantly low residual oxygen values and thus higher efficiency of approx. 2.5 % and lower fuel consumption
  • Reduced exhaust gas volume at the Stack
  • Better part-load performance due to higher combustion temperature
  • Optimum combustion conditions and quiet fuel bed and thus low emissions

Gent­le / low-wear sys­tem ope­ra­ti­on

  • Optimized flue gas recovery
  • Combustion air addition optimally adapted to fuel quality
  • Optimum grate occupancy and grate feed
Brennstoff Rinde und Sägespäne für eine Schmid Feuerung werden über die Revolution Adaptive Regelung automatisch angepasst.
Brennstoff Rinde und Sägespäne für eine Schmid Feuerung werden über die Revolution Adaptive Regelung automatisch angepasst.
Graphik einer Auslesung der Steuerung Revolution Adaptive.

Re­sults of a fuel chan­ge at Wär­me­ver­bund Eschli­kon – mo­ving gra­te firing UTSR-1600.42

The va­lues show the fuel chan­ge from dry was­te wood A 1 to moist fo­rest re­si­du­es M 35.

The Re­vo­lu­ti­on ad­ap­ti­ve con­trol sys­tem com­pen­sa­tes for fuel qua­li­ty chan­ges du­ring ope­ra­ti­on wi­t­hout ma­nu­al in­ter­ven­ti­on.
  1. Desired target power is always achieved and
    the power is automatically trailed
  2. Fluctuations in fuel moisture due to
    of the fuel change from waste wood A1 to
    Forest residue approx. M 35
  3. Residual oxygen is regulated to 6 % and
    complied with

The changing fuels could not be more different. But this is no problem for the Revolution Adaptive Control.

Re­tro­fit with Re­vo­lu­ti­on ad­ap­ti­ve Re­vo­lu­ti­on ad­ap­ti­ve com­bus­ti­on con­trol is avail­ab­le for UTSR hot wa­ter­boi­ler from 700 kW ca­pa­ci­ty. It is used in com­bi­na­ti­on with the sys­tem con­trol of the la­test ver­si­on “Per­so­nal­Touch vi­sio”.

 

Ne­cessa­ry equip­ment

– Personal Touch Revolution adaptive” control upgrade
– Measuring system for determining the current fuel moisture content
– Detection system of the grate occupancy (ember bed height and length) by means of light barriers
– Heat meter for power measurement
– combustion chamber camera
– Remote access via the Schmid portal

Examp­le cal­cu­la­ti­on of an­nu­al fuel sa­vings due to in­crea­sed ef­fi­ci­en­cy:

For a boiler with a nominal output of 4200 kW and 5,000 full operating hours per year, approx. 205 t / 680 m3 fuel (M45)
saved. With a fuel price of CHF / 
€ 0.04 per kWh, this results in an annual saving of more than CHF / € € 21’000.00

This does not take into ac­count:

– Reduced ash generation and ash disposal costs
– Reduced own power consumption
– Reduced maintenance costs
– Reduced operating costs

  • Professionals in after sales – to your advantage

    Our customer service – preserving your investment Heating systems from Schmid are intelligent, sustainable and reliable. Regular maintenance and professional service are the most important measures to positively influence the operating reliability and operating costs of a system. Well-instructed…

  • Schmid Headqater in Eschlikon

    Ope­ning of our branch in To­ron­to

    Swiss tech­no­lo­gy lea­der for bio­mass com­bus­ti­on sys­tems streng­t­hens pre­sence and custo­mer pro­xi­mi­ty in North Ame­ri­ca. Schmid energy solutions has been developing and building biomass boilers since 1936. The innovative boilers with state-of-the-art technology are leaders in the market for renewable…

  • Schmid with new sa­les part­ner in Fin­land

    Coope­ra­ti­on with Ter­mo­de Oy On Wednesday, November 1, 2023, Schmid AG, energy solutions signed a cooperation agreement with Termode Oy. With immediate effect, Termode Oy will distribute and install Schmid boilers in the Finnish market. Termode Oy has decades of…