AE-T100B MicroTurbine, Biogas

Biogas is today a proven and valuable energy source for the combined production of heat and electricity at attractive conditions.One of the most efficient and reliable technologies for the combined production of heat and electricity is represented by micro turbines, that show a very flexible behaviour towards variations of biogas composition, and they also bear significant heating value variations over time. Main application field is represented by wastewater treatment plant (e.g.: sewage, industrial wastewater, agricoltural wastewater, leachate, etc.). Other application fields are: anaerobic digestion in general and landfills. Based on a consistent experience from several applications in various fields, such as:

• sewage biogas
• anaerobic digestion biogas
• landfill gas

We are able to offer custom applications adapting the AE-T100 and related fuel system to specific biogas characteristics. The low maintenance requirements of the AE-T100B, with service intervals of 6,000 operating hours, makes this power generation system extremely attractive and competitive when compared to more conventional solutions. Each AE-T100B configuration can be delivered in specific layouts for indoor or outdoor installation. Both layouts meet current regulations limits for noise and emissions. All AE-T100 can be remotely monitored, controlled and operated.

                                 Power train - 3D representation                                                                                                                        Power train - running principle

Available Versions
Power Only (P), Combined Heat & Power (CHP)
AE-T100B model does not include the biogas compression-treatment device

General
Installation                                                            Indoor / Outdoor - Site temperature range: (-10 ÷ +40) °C
Size (WxHxL)                                                        1200 x 1900 / 3300* x 2770 mm (P) - 1200 x 1900 / 3300* x 3900 mm (CHP)
Weight                                                                   2250 / 2700* kg (P) - 2770 / 3220* kg (CHP)
Fuel                                                                        Biogas

(*) indoor / outdoor layout

Microturbine
Compressor type                                                 Centrifugal, single stage
Turbine type                                                           Radial, single stage
Type /Number of combustion chambers         Lean premix / 1 chamber CAN type
Pressure in combustion chamber                   4.5 bar(a)
Turbine Inlet Temperature (TIT)                        950 °C
Number of shafts                                                 1 (single shaft)
Rated rotational speed                                       70000 RPM

Electrical data
Frequency output                                                50 Hz (60 Hz on request)
Voltage output                                                     400 V (AC), three phases

Fuel requirements
Required pressure                                             6 ÷ 8 bar(g)
Required temperature                                       0 ÷ 40 °C
CH4 min                                                               > 40 %
Consumption**                                                   333 kW ≈ (34 ÷ 85) Nm^3/h
H2S max (hydrogen sulfide)***                       < 2280 mg/Nm^3 ≈ 1500 ppm(v)
Siloxanes max***                                               < 150 mg/Nm^3

(*): the biogas analysis have to be sent in advance to AEN for approval
(**): depending on fuel LHV, CH4 %, biogas composition
(***): with an appropriate biogas treatment system, it’s possible to operate in all cases

Performances
Electrical output*                                                 (105 ± 3) kWel
Electrical Efficiency                                             (30 ± 2) %
Exhaust gas flow                                                 ≈ 0.80 kg/s
Exhaust gas temperature                                  ≈ 270 °C
Average sound pressure                                  72 dB(A) @ 1 m

Emissions* **
NOx                                                                      < 15 ppm(v) ≈ 31 mg/Nm^3
CO                                                                        < 15 ppm(v) ≈ 19 mg/Nm^3

(*): @ full load, 15 % O2
(**): depending on biogas composition