Exergyの技術

Using our uniquely designed multi-stage high-efficiency radial outflow turbine

Binary generators achieve the world’s highest level of power generation efficiency of 30%

Using a uniquely designed multi-stage high-efficiency radial outflow turbine, the binary generator achieves the world’s highest level of power generation efficiency of 30%.

Click here for examples of geothermal power generation

Click here for examples of factory waste heat power generation

Click here for examples of biomass power generation

What is the working medium of EXERGY?

Normally, at most 2~3 types of heat carriers are used in binary power generation, but EXERGY can use 11 types of heat carriers depending on the application of the heat source.

Since it can handle a temperature range from 90 ° C to 350 ° C, in addition to the above examples, waste heat from industrial processes such as concentrating solar power generation (CSP: Concentrating Solar Power), steel mills, glass factories, cement plants, industrial waste treatment plants, various furnaces, waste heat from diesel generators and gas turbine generators, recovered heat from gas compression plants, It can be used for a variety of applications, including solar thermal power generation.

Strengths of Radial Outflow Turbines

Uniquely designed multi-stage radial outflow turbine provides
up to 20% higher capacity than single-stage turbines

Patented mechanical design successfully extends the life of bearings and
achieves high equipment utilization throughout the year

For axial flow turbines, radial flow turbines, etc.,
More efficient transfer of energy to fluids to generate power

Structure of Radial Outflow Turbine

(1) Static blade disc: A disc fixed to the
casing (passenger compartment). Combined with a radial arrangement of static wing multi-stage shrouds.

(2) Introduction tube The steam of the
working medium is guided to the turbine blade row.

(3) NOSE CONE (NOSE CONE) STEAM
FLOWING IN FROM THE INTRODUCTION PIPE IS EVENLY DISTRIBUTED IN THE AXIAL DIRECTION.

(4) Multi-stage rotor blade disc captures the pressure of
steam and converts it into rotational energy.

(5) Bearing mechanism transmits
rotational energy to the generator.

The point
bearing mechanism includes the wear parts of the radial outflow turbine (bearings and lubrication system).
It is easy to take out and replace, and maintenance can be carried out easily and quickly without the loss or loss of the heat medium.

(6) Casing It houses the
turbine and plays the role of an expansion chamber.

Characteristics of binary power generation

Structure suitable for expansion of the working medium

The first stage of the turbine with a large expansion of the working medium is a long blade, and the last stage with a small expansion is a short blade, effectively rotating the turbine. For this reason, it is easy to match the conditions of the operating medium.

Low-speed turbine (3,000rpm or 3,600rpm)

No gearbox, high
reliability, low noise, long
bearing life

Two-dimensional airfoil row structure

Reduced turbulence losses due to three-dimensional flow

Easy-to-remove bearings and sealing mechanisms

No need to remove the working medium during maintenance, easy and fast
maintenance,
reduced sealing leakage and friction losses, no
need for turbine blade overhaul

Standard design models are available for each turbine output band.

The blade shape is optimally designed and standardized for each output band.

Even with a single disc, the multi-stage blade row converts pressure energy into rotational energy in multiple stages

Cost savings
, reduced pressure cycle limitation, simple
system configuration, 20% higher power
, suitable for low-temperature heat sources (up to 90°C) than single-stage machines

Up to 7-stage wing on a single disc

Higher
power generation efficiency for higher enthalpyUp
to 6% higher efficiency than axial flow turbines for flexible geothermal fluid conditions (flow, temperature, composition)

World’s Highest Level of Power Generation Efficiency