Rotary screw engines

Abstract

The relevance of the work is caused by the necessity to introduce the systems of distributed energy production using local types of fuel. More distributed energy sources as heat and electricity are also needed, it is important for remote and northern areas of Russia without centralized energy supply, as well as for new construction projects. Cogeneration provides more efficient use of fuel combustion energy and minimizes loss of energy transfer. Objective: to review existing schemes and development of power devices used for electricity production. The authors have determined new approaches to creating engines suitable for the systems of additional distributed energy sources. Research method: thermodynamic consideration of the power cycle options. Design features and kinematic principles of the engine construction are very important in this case. Compression ratio as a constructive characterization is crucial. A principle of balancing power in the engine is also playing an important role. Results: The authors proposed a rotary screw engines as a new class of power machines suitable for distributed energy generation. Conclusions: Rotary screw motors can be used to operation as the expansion machines of the Rankine cycle and in cycles of internal and external combustion engines. The engines have a high compression rate. Radial and axial forces acting in the engines operating on the proposed schemas are mutually balanced.

Keywords

• distributed power generation
• steam
• steam engine
• turbine
• compressor
• cogeneration