Thermal performance of a meso-scale combustor with electrospray technique using liquid ethanol as fuel

Gan, Yunhua; Chen, Xiaowen; Tong, Yang; Zhang, Xia; Zhang, Yang

doi:10.1016/j.applthermaleng.2017.09.016

Cited by 29 publications

(10 citation statements)

References 39 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The combustion efficiency was improved by 4.5% for combustor B, indicating the catalyst's significant role in enhancing the combustor's performance. Gan et al [52] developed a mesoscale electrospray combustor working on ethanol coupled with an energy conversion module. The combustor was found to sustain stable flames within a range of equivalence ratios from 0.9 to 1.7.…”

Section: Combustionmentioning

confidence: 99%

Towards the Development of Miniature Scale Liquid Fuel Combustors for Power Generation Application—A Review

Sankar,

Sudarsanan,

Mukhopadhyay

et al. 2023

Energies

View full text Add to dashboard Cite

As the demand for powerful, light energy sources continues to grow, traditional electrochemical batteries are no longer sufficient and combustion-based power generation devices have become an attractive alternative due to their high energy density, compact size, fast recharging time and long service life. While most research on miniature-scale combustors has focused on gaseous fuels, the use of commonly available liquid fuels has the potential to be highly portable and economical. However, the complexity of droplet atomization, evaporation, mixing and burning in a limited volume and short residence time has presented significant challenges for researchers. This review focuses on various methodologies proposed by researchers (like flow burring injector, fuel film injection, injecting into porous media, electrospray and some self-aspirating designs) to overcome these challenges, the combustion behaviour and different instabilities associated with liquid fuels at small scales. The current review intends to present a clear direction to channel the efforts made by researchers to overcome the difficulties associated with liquid fuel combustion at small scales for power generation applications. Additionally, this review aims to give an overview of power systems at the micro and meso scales that operate using liquid fuels. The methodologies introduced like electrospray requires external power, which again makes the system complex. Towards the development of standalone type power generators, the self-aspirating design which makes use of hydrostatic pressure, fuel film injection or taking advantage of exhaust gas enthalpy to preheat and evaporate the liquid fuel are the promising methodologies.

show abstract

Section: Combustionmentioning

confidence: 99%

Towards the Development of Miniature Scale Liquid Fuel Combustors for Power Generation Application—A Review

Sankar,

Sudarsanan,

Mukhopadhyay

et al. 2023

Energies

View full text Add to dashboard Cite

show abstract

“…Their obtained results can be suitable for developing combustion-based power generation systems. Gan et al [12] developed a meso-scale combustor taking advantage of an electrospray technique. The thermal efficiency of the combustor ranged from 22.0% to 48.8%, which can be used to couple with energy conversion modules.…”

Section: Introductionmentioning

confidence: 99%

Development of a small power generation system with a miniature-scale swirl burner, controlled heat transfer, and thermoelectric generators

Sheykhbaglou

Robati

2022

Eng. Res. Express

View full text Add to dashboard Cite

Recent advances in small power-consuming electric devices have increased the demand for appropriate, compact, rapidly rechargeable, lightweight, and long-lived power sources with higher energy densities. Hydrocarbon fuels are capable of providing high specific energy density, so combustion-based power generators have received increasing attention as an interesting alternative to batteries. In this study, a small power generation system using a miniature-scale swirl burner, two thermoelectric generators (TEGs), a heat medium, and two water blocks as heat sink has been developed. Various swirl strengths ranging from 0 to 1 are studied to find the optimum swirl number (vane angle) for the blow-out limit. The swirl number related to the greatest stable region is found 0.5 which is associated with the 30 ° vane angle for the 3D printed axial swirlers. Because normal-butane is easily liquified and stored, and is in the gas phase at room temperature and atmospheric pressure, it is chosen as the fuel. This paper examines the effect of three thermal input powers of 194 , 291 , and 388 W along with various airflow rates on the performance of the power generation system at the 30 ° vane angle swirler. The results show that about 3 min is needed for our system to reach a steady power output. Moreover, it is observed that the maximum output power is found at the load resistance of R load = 3 Ω for studied operating conditions. Besides, it is shown that by considering the airflow rate fixed, the power output of the system increases with an increase in the fuel flow rate (thermal input power). Furthermore, a maximum power output of 17.2 W is obtained for the fuel flow rate and an airflow rate of 0.200 slpm ( ≈ 388 W ) and 2.7 slpm , respectively, which corresponds to a conversion efficiency of about 4.5 % at R = 3 Ω load resistance.

show abstract

“…Combustion of porous media [10,11], combustion of bluffbody [12-14], method of external heating [15], besides the field being electrical [16]. As a consequence, the associated study findings revealed that these techniques significantly increase the limit of blow-off [17,18], thermal function [19,20], and emissions combustion [21,22]. However, a typical micro TPV system is shown in Figure 1 involves 3 prime components: An emitter, a fuel source, and a TPV cell array.…”

Section: Introductionmentioning

confidence: 99%

Numerical Study of an Improved Non-Circular MC Fuelled with H/Air for Thermo-Photovoltaic (TPV) Applications

Ayad¹,

Khdher²,

Albazzaz³

et al. 2022

MMEP

View full text Add to dashboard Cite

In recent years, researchers have paid special attention to wall uniformity temperature and improvement in a micro-combustor (MC) for applications as thermos-photovoltaic (TPV) since they have a direct influence on feasibility and efficiency of the required conversion of energy. Numerous experimentation and numerical studies in the field of micro-combustion have been carried out and published in this respect. This study focuses on the flame and flow behaviour in an improved MC. Utilizing the famous approach of fluid dynamics being computational (CFD), the impact of geometrical flow parameters behaviour and temperature of wall is explored and measured. The generated model is being used to evaluate the effects of Hydrogen (H) mass flow rate (MFR) and H/air equivalency ratios on the flame pattern and outer temperature of wall of conventional and enhanced MCs. Moreover, the influence of various MC cross sections (CS), such as square, circular, and flat, on temperature of wall is examined. The findings reveal that when the MFR rises, the wall outside temperature rises as well. The MC with flat cross-sections (CSs) is found to be more effective in terms of power of emitter and efficiency of emitter.

show abstract

Thermal performance of a meso-scale combustor with electrospray technique using liquid ethanol as fuel

Cited by 29 publications

References 39 publications

Towards the Development of Miniature Scale Liquid Fuel Combustors for Power Generation Application—A Review

Towards the Development of Miniature Scale Liquid Fuel Combustors for Power Generation Application—A Review

Development of a small power generation system with a miniature-scale swirl burner, controlled heat transfer, and thermoelectric generators

Numerical Study of an Improved Non-Circular MC Fuelled with H/Air for Thermo-Photovoltaic (TPV) Applications

Contact Info

Product

Resources

About