High temperature heat and water recovery in steam injected gas turbines using an open absorption heat pump

Vandersickel, A.; Wedel, Wolf Gereon; Spliethoff, Hartmut

doi:10.1016/j.applthermaleng.2019.114663

Cited by 16 publications

(4 citation statements)

References 25 publications

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Section: Literature Reviewmentioning

confidence: 99%

“…5) Utilization of the exhaust gases heat with the organization of GTP’s work on the contact gas–steam turbine cycle. 1,9…”

Section: Literature Reviewmentioning

confidence: 99%

“…There are the following ways to improve the efficiency of GTP cycles: 1) Gas interheating during expansion; 1,2 2) Air intercooling during pressure increase; 5,6 3) Heat regeneration of the GTP exhaust gases; 7 4) Utilization of the exhaust gases heat in the steamturbine heat recovery circuit; 1,8 5) Utilization of the exhaust gases heat with the organization of GTP's work on the contact gas-steam turbine cycle. 1,9 Among the above methods of increasing the gas turbine plant efficiency, one of the most promising is to use air intercooling during the compression process in the compressor, that is, the increase in the efficiency of the compressor by approaching of the air compression process to isothermal (approaching the final compression temperature to the initial one). Hence, the gas temperature at the turbine inlet decreases without loss of power, which favorably affects the gas turbine resource or it becomes possible to increase the gas turbine power without reducing the resource of its operation.…”

Section: Literature Reviewmentioning

confidence: 99%

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Research of characteristics of the flow part of an aerothermopressor for gas turbine intercooling air

Konovalov

Radchenko

Kobalava

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part A:

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Complex gas turbine schemes with air intercooling are usually used to bring the compression process of working fluid in compressor closer to isothermal one. A promising way to realize it is to use an aerothermopressor. The aerothermopressor is a two-phase jet apparatus, in which the highly dispersed liquid (water) is injected into the superheated gas (air) stream accelerated to the speed closed to the sound speed value (Mach number from 0.8 to 0.9). The air pressure at the aerothermopressor outlet (after diffuser) is higher than at the inlet due to instantaneous evaporation of highly dispersed liquid practically without friction losses in mixing chamber and with an increase in pressure of the mixed homogenous flow. The liquid evaporation is conducted by removing the heat from the air flow. In the course of the experimental research, the operation of the aerothermopressor for gas turbine intercooling air was simulated and its characteristics (hydraulic resistance coefficients, pressure increase, and air temperature) were determined. Within contact cooling of air in the aerothermopressor, the values of the total pressure increase in the aerothermopressor were from 1.02 to 1.04 (2–4%). Thus, the aerothermopressor use to provide contact evaporative cooling of cyclic air between the compressor stages will ensure not only compensation for pressure losses but also provides an increase in total air pressure with simultaneous cooling. Injection of liquid in a larger amount than is necessary for evaporation ensures a decrease in pressure losses in the flow path of the aerothermopressor by 15–20%. When the amount of water flow is more than 10–15%, the pressure loss becomes equal to the loss for the “dry” aerothermopressor, and with a further increase in the amount of injected liquid, they are exceeded. The values of errors in the relative increase of air pressure in the aerothermopressor measurements not exceeded 4%. The results obtained can be used in the practice of designing intercooling systems for gas turbines.

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Section: Literature Reviewmentioning

confidence: 99%

“…5) Utilization of the exhaust gases heat with the organization of GTP’s work on the contact gas–steam turbine cycle. 1,9…”

Section: Literature Reviewmentioning

confidence: 99%

Section: Literature Reviewmentioning

confidence: 99%

See 1 more Smart Citation

Research of characteristics of the flow part of an aerothermopressor for gas turbine intercooling air

Konovalov

Radchenko

Kobalava

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part A:

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“…Energies 2024, 17, 1425 2 of 27 temperature in the solar hybrid Steam Injected Gas Turbine (STIGT) system, an intermediate cooling water/heat recovery system is introduced [8,9]. This system enables the solar hybrid STIGT energy supply system to operate with near zero water supply, utilizing intermediate cooling equipment to cool the inlet air and ensure the efficient and stable operation of the system.…”

Section: Introductionmentioning

confidence: 99%

Study on Multivariable Dynamic Matrix Control for a Novel Solar Hybrid STIGT System

Zheng,

Luo,

et al. 2024

Energies

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To construct a clean and efficient energy system, advanced solar thermal power generation technology is developed, i.e., a solar hybrid STIGT (Steam Injected Gas Turbine) system with near zero water supply. Such a system is conducive to the efficient use of solar energy and water resources, and to improvement of the performance of the overall system. Given that the strong correlation between multiple-input and multiple-output of the new system, the MDMC (Multivariable Dynamic Matrix Control) method is proposed as an alternative to a PID (Proportional-Integral-Derivative) controller to meet requirements in achieving better control characteristics for a complex power system. First, based on MATLAB/Simulink, a dynamic model of the novel system is established. Then it is validated by both experimental and literature data, yielding an error no more than 5%. Subsequently, simulation results demonstrate that the overshoot of output power on MDMC is 1.2%, lower than the 3.4% observed with the PID controller. This improvement in stability, along with a reduction in settling time and peak time by over 50%, highlights the excellent potential of the MDMC in controlling overshoot and settling time in the novel system, while providing enhanced stability, rapidity, and accuracy in the regulation and control of distribution networks.

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Experimental Investigation on Solution Regeneration Performance and Coefficients in Full-Open System for Heat and Water Recovery of Flue Gas

Wei,

Huang,

et al. 2024

J. Therm. Sci.

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High temperature heat and water recovery in steam injected gas turbines using an open absorption heat pump

Cited by 16 publications

References 25 publications

Research of characteristics of the flow part of an aerothermopressor for gas turbine intercooling air

Research of characteristics of the flow part of an aerothermopressor for gas turbine intercooling air

Study on Multivariable Dynamic Matrix Control for a Novel Solar Hybrid STIGT System

Experimental Investigation on Solution Regeneration Performance and Coefficients in Full-Open System for Heat and Water Recovery of Flue Gas

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