The present invention provides a gas turbine combustor that has a fuel injection nozzle using a fluid other than liquid fuel to atomize the liquid fuel and that can suppress a reduction in power generation efficiency resulting from a heat loss while promoting the atomization of the liquid fuel. The gas turbine combustor is adapted to mix liquid fuel with combustion air led from a compressor, burn the mixture, and supply combustion gas generated to a gas turbine. The gas turbine combustor includes a fuel injection nozzle that atomizes the liquid fuel into fine liquid droplets. The fuel injection nozzle includes a first system adapted to supply the liquid fuel and a second system adapted to supply a fluid for atomizing the liquid fuel. Low-boiling liquid fuel is supplied to the second system as the fluid. The second system is adapted to heat and supply the low-boiling liquid fuel.

Gas turbine combustor

A recent review of waste heat recovery by Organic Rankine Cycle

Review of organic Rankine cycle for small-scale applications

Power production from low grade heat and waste heat does not only mitigate environmental impact but also improve energy efficiency and reduce energy cost. The type and design of expander for a low grade heat engine are critical and affect the performance, efficiency and cost of low grade heat and waste heat recovery system. The choice of expansion machine is strongly correlated with operating conditions, working fluid and size of the system. Low grade heat and waste heat recovery systems for electricity production are usually smaller in size. Turbines cannot be used due to their high rotational speed and high cost for waste heat and low grade heat recovery systems less than 50 kWe. Therefore, volumetric expanders are more suitable in low grade heat and waste heat engines for a smaller size. The current paper provides a comprehensive review of volumetric expanders including vane expander, screw expander, scroll expander, and piston expander applications for low grade heat and waste heat recovery using organic Rankine cycle. The operational performance, design optimizations, leakage and frictional losses, modeling techniques for each type of expander has been investigated in detail. Technical constraints and operational performance of expanders have been analyzed followed by the comparative assessment based on their performance, current market status, and economics. The comparative assessment shows that screw expander and scroll expander are most suitable having a relative score of 73.6 and 70.4 respectively on a scale of 100. The vane expanders have the lowest score of 47.2 due to low power range, leakage and frictional losses, and technical complexities.

Volumetric expanders for low grade heat and waste heat recovery applications

A comparative exergoeconomic analysis of different ORC configurations for binary geothermal power plants

Thermo-economic optimization of Regenerative Organic Rankine Cycle for waste heat recovery applications

Multi-objective optimization of evaporator of organic Rankine cycle (ORC) for low temperature geothermal heat source

Twin fluid atomizing nozzle

The present invention relates to a plate type heat exchanger including a cut plate, and includes: a plurality of plates disposed so that first flow paths and second flow paths, through which different heat media are heat exchanged and flow, respectively, are repeatedly formed; a reinforcing part provided between the plates, and configured to support the plates so that the plates are disposed to be spaced apart from each other; and cut plates provided between the plates and the reinforcing part, and having cut parts

Plate type heat exchanger with cutted plate

A complex bearing system according to the present invention comprises a rotary shaft; a disk joined to the rotary shaft to be rotated with the rotary shaft according to the direction of an axial road applied; a housing for covering the rotary shaft and the disk; a pair of thrust bearings to be individually positioned on the inner side of the housing at both sides of the disk; and a gas intake unit joined to the housing for covering the outer circumference of the disk to take a high pressure gas into the housing. The complex bearing system distributes an axial load applied to the bearings as the disk adjusts the inflow of the high pressure gas separately flowing in both sides of the disk according to the moved position and induces more high pressure gases to flow in through a space between the bearing in the moved position and the disk.

Complex bearing system, complex bearing system of rotation-axis of generator, power-generating device using them and method for distribution of axis load on thrust bearing

Hyouck Ju Kim

Papers

Thermo-economic optimization of Regenerative Organic Rankine Cycle for waste heat recovery applications

Multi-objective optimization of evaporator of organic Rankine cycle (ORC) for low temperature geothermal heat source

Twin fluid atomizing nozzle

Plate type heat exchanger with cutted plate

Complex bearing system, complex bearing system of rotation-axis of generator, power-generating device using them and method for distribution of axis load on thrust bearing