Hot Air Turbines

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Deployed by 8 companies

Low impact power stations fueled with biomass or waste

Page last modified
April 11 2024

Revolutionising the decarbonised distributed generation market by supporting smaller-scale, low impact power stations fuelled with biomass or waste to provide power and heat to our homes and places of work.

How it works:

  • Fresh air is pressurised
  • The pressurised air is heated in a heat exchanger
  • Air depressurises and cools first through the “turbocompressor” needed to pressurise the air in the first place
  • Air depressurises and cools more in a “Power Turbine” to produce electricity

There are multiple sources to heat the air:

  • Waste wood/biomass
  • Municipal waste combustion
  • Pyrolysis gas from biochar production
  • Flare gas (HX not required)
Pros & Limitations
1
Multi-fuel compatible
1
High durability / reliability
1
High exhaust air temperatures are compatible with district heating and industrial processes
1
Cost is typically <2500 $/kWe
1
Can be coupled with Organic Rankine high efficiency combined cycle applications
1
Can be coupled with absorption chillers for cooling applications
0
Requires flue gas with a temperature above 740 Degrees Celsius
Specification
Specification Title Specification Description
Areas of Application
Low carbon distributed power generation
Business Efficiency
10–18% in simple cycle | 22-26% in combined cycle
Capabilities
Feasibility studies | Design | Supply and build | Test | Commission
Certifications / licences
No specific licences required
Compliance
No pressurised liquids or steam reducing | Eliminating the need for pressure vessel compliance
Input
Powered by fuels like: RDF | Biomass | Concentrated solar
Maintenance
Designed for 24x7 operation | Typical annual maintenance schedule
Output
Thermal Power output: 240kWth – 2000kWth | Electrical Power output: 50kWe – 330kWe
Power
Thermal Power input: 350kWth – 2800kWth

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Technology Readiness Level

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[9/9]

Development Technology demonstration Mature / Proven
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At Bluebox, we will work with you to understand your heat and electricity needs and get the best economic solution from available technologies such as Organic Rankine Cycles, Steam solutions, hot air turbines and Absorption chillers.

If heat is not required, we might also suggest a combined cycle approach that uses a hot air turbine top cycle and either steam organic Rankine cycle bottoming cycle to maximise electrical efficiency.

We also provide clients with their engineering development projects from thermodynamic analysis, building test platforms and developing control systems.

Contact: +44 23 9216 2020
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