Humidification tower for humid air gas turbine cycles: Experimental analysis

Traverso, Alberto

doi:10.1016/j.energy.2009.07.021

Cited by 26 publications

(7 citation statements)

References 19 publications

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“…There are currently several techniques for air humidification: ultrasonic humidification [4], steam generation [5], and spray towers [6,7]. These techniques are either energy intensive or bulky, therefore are less reliable and durable.…”

Section: Introductionmentioning

confidence: 99%

Coupled heat and mass transfer in an application-scale cross-flow hollow fiber membrane module for air humidification

Zhang

2012

International Journal of Heat and Mass Transfer

105

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Section: Introductionmentioning

confidence: 99%

Coupled heat and mass transfer in an application-scale cross-flow hollow fiber membrane module for air humidification

Zhang

2012

International Journal of Heat and Mass Transfer

105

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“…, gas turbine cycle [7], evaporation and crystallization [8] and other systems to improve the comprehensive performance of the system because of its low cost, high efficiency and energy saving, which have been developed rapidly. In recent years, many scholars have studied the effect of various new packing on the heat and mass transfer efficiency of humidifiers.…”

Section: List Of Symbolsmentioning

confidence: 99%

Characteristic analysis of heat and mass transfer process within structured packing humidifier

Chen

Han

et al. 2019

J Braz. Soc. Mech. Sci. Eng.

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Humidifiers are the important devices for humidifying the air both in life and industrial production. This paper focuses on the heat and mass transfer processes inside the counter-flow packing humidifier at atmospheric pressure. Based on mass and energy balance, the mathematical model for the humidifier is established. The finite difference method is first adopted to calculate the specific scales of the packing and the relevant state distribution of the gas-liquid species at on-design conditions. Thus, the heat and mass transfer performance of the humidifier is also carried out at off-design conditions. The simulation results show that the required packing height at the design parameters is 3.38 × 10 −1 m, while the supersaturation phenomenon begins at Z = 5.76 × 10 −2 m, and the humidity ratio and supersaturated humidity ratio at humidifier outlet are 1.69 × 10 −1 kg/ kg and 1.64 × 10 −3 kg/kg, respectively. In addition, for off-design analysis, as the liquid-gas ratio increases, the outlet water temperature and outlet air temperature increase by 14.3% and 7.47%, respectively, and the humid air reaches saturation earlier as the saturation point falls from 5.76 × 10 −2 to 2.7 × 10 −2 m. Within the range of the simulation conditions, the maximum account of droplets entrained in the humid air reaches 1.72 × 10 −3 kg/kg, while the total packing pressure drop increases with the decrease in liquid-gas ratio. The effect of liquid-gas ratio and wet-bulb temperature of inlet air on the humidifier under design parameters can provide great reference significance for the design, optimization and regulation of humidifiers.

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“…Experimental work has primarily been highly focused on examining ways in which the performance of saturators and humidification towers can be assessed and improved [62][63][64][65][66] rather than on the performance of the turbine or capture system. Technical aspects of the whole cycle (such as in Wei and Zang 56 ), or how improvements can be made to aid carbon capture (like in Li et al 8 ) have received significantly less attention.…”

Section: Humid Air Turbinesmentioning

confidence: 99%

Making gas‐CCS a commercial reality: The challenges of scaling up

et al. 2017

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Significant reductions in CO 2 emissions are required to limit the global temperature rise to 2°C. Carbon capture and storage (CCS) is a key enabling technology that can be applied to power generation and industrial processes to lower their carbon intensity. There are, however, several challenges that such a method of decarbonization poses when used in the context of natural gas (gas-CCS), especially for solvent-based (predominantly amines) post-combustion capture. These are related to: (i) the low CO 2 partial pressure of the exhaust gases from gas-fired power plants (ß3-4%vol. CO 2 ), which substantially limits the driving force for the capture process; (ii) their high O 2 concentration (ß12-13%vol. O 2 ), which can degrade the capture media via oxidative solvent degradation; and (iii) their high volumetric flow rates, which means large capture plants are needed. Such post-combustion gas-CCS features unavoidably lead to increased CO 2 capture costs. This perspective aims to summarize the key technologies used to overcome these as a priority, including supplementary firing, humidified systems, exhaust gas recirculation and selective exhaust gas recirculation. These focus on the maximum CO 2 levels achievable for each, as well as the electrical efficiencies attainable when the capture penalty is taken into account. Oxy-turbine cycles are also discussed as an alternative to post-combustion gas-CCS, indicating the main advantages and limitations of these systems together with the expected electrical efficiencies. Furthermore, we consider the challenges for scaling-up and deployment of these technologies at a commercial level to enable gas-CCS to play a crucial role in a low-carbon future. C

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Humidification tower for humid air gas turbine cycles: Experimental analysis

Cited by 26 publications

References 19 publications

Coupled heat and mass transfer in an application-scale cross-flow hollow fiber membrane module for air humidification

Coupled heat and mass transfer in an application-scale cross-flow hollow fiber membrane module for air humidification

Characteristic analysis of heat and mass transfer process within structured packing humidifier

Making gas‐CCS a commercial reality: The challenges of scaling up

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