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Research Papers: Gas Turbines: Marine

An Evaluation of the Application of Nanofluids in Intercooled Cycle Marine Gas Turbine Intercooler

[+] Author and Article Information
Ningbo Zhao

College of Power and Energy Engineering,
Harbin Engineering University,
Harbin, Heilongjiang 150001, China
e-mail: zhaoningbo314@hrbeu.edu.cn

Xueyou Wen

Mem. ASME
Department of Gas Turbine,
Harbin Marine Boiler
and Turbine Research Institute,
Harbin, Heilongjiang 150078, China
e-mail: 13904655629@139.com

Shuying Li

College of Power and Energy Engineering,
Harbin Engineering University,
Harbin, Heilongjiang 150001, China
e-mail: lishuying@hrbeu.edu.cn

1Corresponding author.

Contributed by the Marine Committee of ASME for publication in the JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER. Manuscript received July 13, 2015; final manuscript received July 19, 2015; published online August 18, 2015. Editor: David Wisler.

J. Eng. Gas Turbines Power 138(1), 012201 (Aug 18, 2015) (9 pages) Paper No: GTP-15-1282; doi: 10.1115/1.4031170 History: Received July 13, 2015; Revised July 19, 2015

Coolant is one of the important factors affecting the overall performance of the intercooler for the intercooled (IC) cycle marine gas turbine. Conventional coolants, such as water and ethylene glycol, have lower thermal conductivity which can hinder the development of highly effective compact intercooler. Nanofluids that consist of nanoparticles and base fluids have superior properties like extensively higher thermal conductivity and heat transfer performance compared to those of base fluids. This paper focuses on the application of two different water-based nanofluids containing aluminum oxide (Al2O3) and copper (Cu) nanoparticles in IC cycle marine gas turbine intercooler. The effectiveness-number of transfer unit method is used to evaluate the flow and heat transfer performance of intercooler, and the thermophysical properties of nanofluids are obtained from literature. Then, the effects of some important parameters, such as nanoparticle volume concentration, coolant Reynolds number, coolant inlet temperature, and gas side operating parameters on the flow and heat transfer performance of intercooler, are discussed in detail. The results demonstrate that nanofluids have excellent heat transfer performance and need lower pumping power in comparison with base fluids under different gas turbine operating conditions. Under the same heat transfer, Cu–water nanofluids can reduce more pumping power than Al2O3–water nanofluids. It is also concluded that the overall performance of intercooler can be enhanced when increasing the nanoparticle volume concentration and coolant Reynolds number and decreasing the coolant inlet temperature.

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References

Figures

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Fig. 1

Schematic representation of reverse flow plate-fin intercooler

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Fig. 2

Detailed view of straight fin

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Fig. 3

Effect of nanoparticle volume concentration on coolant mass flow rate at constant heat transfer rate

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Fig. 4

Effect of nanoparticle volume concentration on coolant specific heat

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Fig. 5

Effect of nanoparticle volume concentration on coolant density

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Fig. 6

Effect of nanoparticle volume concentration on coolant volumetric flow rate at constant heat transfer rate

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Fig. 7

Effect of nanoparticle volume concentration on coolant Reynolds number at constant heat transfer rate

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Fig. 8

Effect of nanoparticle volume concentration on coolant pressure drop at constant heat transfer rate

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Fig. 9

Effect of nanoparticle volume concentration on coolant pumping power at constant heat transfer rate

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Fig. 10

Effect of coolant Reynolds number on heat transfer rate of intercooler

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Fig. 11

Relative changing of coolant mass flow rate with coolant Reynolds number at constant heat transfer rate

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Fig. 12

Relative changing of coolant pumping power with coolant Reynolds number at constant heat transfer rate

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Fig. 13

Effect of coolant inlet temperature on heat transfer rate of intercooler

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Fig. 14

Effect of coolant inlet temperature on coolant mass flow rate at constant heat transfer rate

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Fig. 15

Effect of coolant inlet temperature on coolant pumping power at constant heat transfer rate

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Fig. 16

Effect of operating condition of marine gas turbine on heat transfer rate of intercooler

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Fig. 17

Effect of operating condition of marine gas turbine on coolant mass flow rate at constant heat transfer rate

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Fig. 18

Effect of operating condition of marine gas turbine on coolant pumping power at constant heat transfer rate

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