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FAQ

BIOMASSA

1. What is the biomass quantity per hour needed by machine for working?

It depends on biomass type / residual material used and its moisture content. In case of using wood chips with a content humidity equal to 20%, hourly consumption is equal to 24 kg / h.

BIOCHAR

2. When can the waste of thermochemical process (ash) be considered biochar?

The waste deriving from the thermochemical gasification process (in case of wood chips its quantity amounts to about 5% of the biomass introduced, i.e. 0.05 x 25 kg / h = 1.25 kg / h of ash) can be considered biochar ONLY if all of them are respected downstream of specific laboratory tests the limits established by Legislative Decree 75 29/04/10 (Annex 2) and by Ministerial Decree 22/06/15 as far as concerns the pH values, electrical conductivity, total carbon of biological origin, humidity at 103 ° C, ashes at 550 ° C, molar ratio H / C and hydrocarbon content Aromatic Polycyclics (PAHs).

3. The classification in biochar needs analysis and / or characterizations or it is automatically attributed in depending on the type and biomass quality?

The classification in biochar MANDATORY requires analysis of laboratory as defined in the previous answer. For each type of biomass used by the customer, and, therefore, for the specific product used in power supply to the ECO20x system, the relative characterization must be carried out in laboratory. The attribution is NOT automatic.

4. How CMD define the biochar classification?

CMD provides direct references of conventioned laboratories where it’s possible making tests for the ashes qualification as biochar.

5. Has CMD defined biochar yet?

CMD is carrying out a certification process for the ash produced from the gasification of the wooden biomass used on site to feed their plants during experimental tests.

6. If the waste cannot be classified as biochar, what waste code (CER) must be used for its classification and how should it be disposed?

The ashes deriving from the gasification process of virgin wooden scraps have been qualified as SPECIAL NON-DANGEROUS WASTE, through appropriate analyses made by conventioned laboratories, attributing the CER code 10 01 03. The special waste producer must provide for its disposal to a company authorized to transport or to a person authorized to carry out operations disposal / recovery of waste produced or to the public collection service, in agreement to article 188 paragraph 1 of Legislative Decree 152/2006. The classification and the attribution of the CER code by the manufacturer must be performed specifically based on the type of material used in supply. The code CER 10 01 03 has been obtained for the only case of virgin wooden scraps. If a different one is used residual material, the relative CER to be associated with the ashes can change and for for this reason specific tests must be carried out by accredited laboratories.

THERMAL POWER

7. What is the flow of hot water per hour produced by the machine?

The flow rate of water produced by the system strictly depends on the pump circulation used by the customer on its thermal recovery circuit. CMD prescribes the installation of circulation pumps capable of processing a hourly water flow up to a maximum of 3600 l / h.

8. What is the temperature of delivery of hot water?

The temperature of the water that comes out of the system can be available between 75 ° C - 80 ° C depending on the flow of water processed by circulating pumps used by the customer on its thermal recovery circuit.

9. How hot water can be produced?

The plant can achieve a recovery with low temperature using the engine cooling water through a plate exchanger (about 30 kWth), in series with a high temperature recovery exploiting the exhaust gases of the engine by means of a shell and tube exchanger (ca 10 kWth). Thermal energy produced can be used to satisfy thermal loads of a generic end user, such as for the production of water domestic hot water, for heating or possibly for cooling through the use of absorption refrigeration units.

10. How much water need for cooling down the entire plant?

Usually, the plant works also in “generator” mode the system also works perfectly in mode "Generator", or in electricity-only mode without use of hot water in order to satisfy the thermal request by the customer referred to in point 7.

PLANT OPERATING

11. Does the system use electric power for operating?

The plant needs electric power in each operating phase but there is an electric energy consumption only in pre-starting time and plant shutdown after engine’s stop. During the production process, although the withdrawal of electric power for powering the electrical panels and system auxiliaries remains, the absorption is compensated by the production and therefore by the introduction of electric power into the grid.

12. If yes, how much electric power does the system consume every hour?

Electric power consumption is variable during the system operating due to the activation of the electric motors used to move the biomass from the loading hopper to the reactor. The average consumption at a value close to 2 kW, with peaks that do not reach 7 kW.

13. Is possible to switch on and turn off the system according to the customer needs?

Yes, it is possible to do it easily through the touch screen on board of the system or remotely.

14. How long does it take for bring the plant into operation after restart?

If the shutdown has lasted 1 hour, under normal operating conditions and in absence of difficult climatic conditions (temperature below 10° C), the system is able to restore engine operation after about 15 minutes.

15. What it takes to reboot the system (electricity, flame ignition, etc.)?

The system is started through a glow plug into the gasifier, which is powered by electric energy taken from the power grid. The glow plug is the element that dissipates the heating deriving from electric energy, with the aim to burn biomass in contact with it to start the process in the initial phase.

16. Is possible to start the system in remote?

Yes, you can turn on the ECO20x in remote as it would be in able to act as a conductor near the PLC system.

17. Is possible to control the system in remote?

Yes, you can control ECO20x in remote as it would be in able to act as a conductor near the PLC system.

18. Does CMD provide the application for remote control?

Yes, CMD will provide the application for remote control.

19. If yes, it can be used on any model of mobile phone? (iOS, Android, etc.)?

Yes it can be installed on any type of mobile phone.

20. Is the cost of the APP included in the price of the system?

Yes, the cost of the App is included in the price of system.

21. What is the ordinary maintenance (synthetic description) that manager / customer must do to ensure correct system operating and what frequency of intervention require? And which ones extraordinary?

Cod.
ACTIVITY OF
MAINTENANCE
INTERVAL
MAINTENANCE
TYPE OF
MAINTENANCE
ENGINE
A.1
Clamp setting check e screw connections
100 h
ORDINARY
A.2
Oil replenishment
100 h
ORDINARY
A.3
Oil filter replacement
400 h
ORDINARY
A.4
Engine oil drain
400 h
ORDINARY
A.5
Recording of operating hours
100 h
ORDINARY
A.6
Washing of the suction manifold
600 h
ORDINARY
A.7
Checking / cleaning the spark plugs ignition
100 h
ORDINARY
Ordinary maintenance operations to be performed daily.
Ordinary maintenance operations to be performed after a certain number of hours by the manager / customer.
Extraordinary maintenance operations to be carried out after a certain number of hours by the manager / customer.
Extraordinary maintenance operations to be performed MANDATORY by CMD.
Cod.
ACTIVITY OF
MAINTENANCE
INTERVAL
MAINTENANCE
TYPE OF
MAINTENANCE
ENGINE
A.8
Replacement of spark plugs
600 h
ORDINARY
A.9
Pressure measurement of compression
600 h
EXTRAORDINARY
A.10
Air filter check / cleaning
600 h
ORDINARY
A.11
Auxiliary belt check and possible replacement
600 h
EXTRAORDINARY
A.12
Distributor control
600 h
STRAORDINARIA
A.13
Daily cleaning of the throttle body
giornaliero
ORDINARY
A.14
Cleaning the air throttle body
200 h
ORDINARY
A.15
Heat engine replacement
15000 h
EXTRAORDINARY
A.16
Chilled liquid control
100 h
ORDINARY
A.17
Cleaning of engine radiator in counter-flow with lance
200 h
ORDINARY
A.18
Alternator / battery charger check
giornaliero
ORDINARY
A.19
Battery condition check
giornaliero
ORDINARY
A.20
Component replacement after a failure
N/R
EXTRAORDINARY
GASIFICATION SYSTEM
B.1
Ash emptying
giornaliero
ORDINARY
B.2
Motor cyclone control
giornaliero
ORDINARY
B.3
Cooler checking and cleaning (if necessary replacement of dirt with clean)
100 h
EXTRAORDINARY
B.4
Barrels cleaning, condensate valves, engine cyclone
100 h
ORDINARY
B.5
Material replacement biological filters
100 h
ORDINARY
B.6
Greasing bearings M1 and M3
100 h
ORDINARY
B.7
Check and cleaning cyclone reactor
100 h
ORDINARY
B.8
Check circulator operation and flow switch
200 h
ORDINARY
B.9
Check operating status valves and relative feedback
100 h
ORDINARY
B.10
Reactor cleaning
400 h
EXTRAORDINARY
B.11
Check Ventilation of electrical panels and cleaning of the filters of the cabinet
200 h
ORDINARY
B.12
Cleaning of flexible hoses
100 h
ORDINARY
B.13
Loading hopper inspection e vibrator motor status
200 h
ORDINARY
B.14
Daily biomass loading
giornaliero
ORDINARY
B.15
Gas blower check / cleaning
600 h
ORDINARY
B.16
Component replacement a failure continuation
N/R
EXTRAORDINARY
alternatore
C.1
Winding condition checks after long periods of storage or parking
N/R
STRAORDINARIA
C.2
Correct operation check (no noise or abnormal vibrations)
200 h
ORDINARY
C.3
Mechanical checks on all bolts
200 h
ORDINARY
C.4
External cleaning of the generator
200 h
ORDINARY
C.5
Bearing maintenance and possible replacement
30000 h
EXTRAORDINARY
C.6
Windings cleaning
N/R
STRAORDINARIA
C.7
Replacement of the diode bridge
N/R
EXTRAORDINARY
C.8
Exciter replacement
N/R
EXTRAORDINARY
C.9
Replacing the regulator voltage
N/R
EXTRAORDINARY
C.10
Residual voltage check
N/R
EXTRAORDINARY
C.11
Component replacement a failure continuation
N/R
EXTRAORDINARY
Container
D.1.1
Control of locking systems e door gaskets
5000 h
ORDINARY
D.1.2
Control of safety signs and restoration of anomalies
15000 h
ORDINARY
D.1.3
Component replacement after failure
N/R
EXTRAORDINARY
THERMAL SYSTEM
E.1.1
Check tightness of connections and valves
15000 h
ORDINARY
E.1.2
Check operation self-purging of exhaust pipe bundles (overpressure valve)
15000 h
ORDINARY
E.1.3
Connection leak check
15000 h
ORDINARY
E.1.4
Possible check overheating, vibrations and noises
15000 h
ORDINARY
E.1.5
Visual inspection
15000 h
ORDINARY
E.1.6
Removal of encrustations (if any)
15000 h
ORDINARY
E.1.7
Tightening of nuts and bolts and checking anchors
15000 h
ORDINARY
E.1.8
Check system water pressure, pressure gauges
100 h
ORDINARY
E.1.1
Component internal replacement after a fault
N/R
EXTRAORDINARY
TABLE 1. the operations of routine maintenance to be performed daily are highlighted with the orange.

22. The system works with the closed or opened box?

The system must be used with OBLIGATORY doors arranged in closed position and interlocked with the padlock supplied by CMD.

23. There are accessories and / or external containers to be installed when the machine works?

External containers must be provided for the Condensation collection. On average about 3 kg / h of condensate are produced (Code CER 16 10 02) of which 95% consist of water and 5% consist of tar, it follows that the residual part to be disposed of is only that connected to the tar by virtue of the consequent evaporation of the water. With regard to the provision and other information concerning the classification, what is defined in point 6 applies.

CHIPPER

24. The chipper proposed to the customer is powered with electricity or with fuel?

The proposed chipper is actioned by a reciprocating internal combustion engine. CMD for the production of wooden chips used on site for powering its plants during the tests, has used two types of chippers moved by reciprocating internal combustion engine (petrol and diesel), whose technical characteristics are illustrated in Table 2.
CHIPPER MODEL
Power of alternative internal combustion
PRODUCTION CHIPS [m3 / h]
Caravaggi (petrol)
16,5
10
Eschlboeck (diesel – for the customer)
46,1
30
TABLE 2. Technical characteristics of motor chippers used in CMD.

25. What is the electricity consumption per hour of the chipper operation?

The powers of a chipper moved by an electric motor are be equal to those or a similar chipper moved through motor. For the corresponding electricity consumption, in the first instance it results. It is possible to refer to the plate data shown in Table 2.

BRIQUETTING MACHINE

26. What is the electricity consumption per hour of the briquetting system which we propose suggestion to the customer?

CMD for the production of briquettes used on site to feed own plants during the tests, has used a briquetting system whose data of plate are shown in Table 3.
Briquetting system model
BRIQUETTING SYSTEM POWER [kW]
PRODUCTION [kg/h]
Comafer
5
15-50 (depending on the material)
TABLE 3. Technical characteristics of the briquetting machine used in CMD.

SIFTER

27. What is the electricity consumption per hour of the winnower from us proposed to the customer?

CMD suggests to the customers using the winnower whose plate data are shown in Table 4.
Winnower system model
WINNOWER SYSTEM POWER [kW]
PRODUCTION [ton/h]
Option VIB01/02 (proposed to the customer)
0.75
10-15 (depending on the material)
TABLE 4. Technical characteristics Screen recommended to the customer by CMD.

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