Thermal Water Pumps on the Basis of Fluid Piston Solar Stirling Engine

Mahkamov, Khamid; Djumanov, D; Orda, E. P.; Trukhov, V. S.

doi:10.2514/6.2003-6097

Cited by 3 publications

(7 citation statements)

References 2 publications

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“…Serially cascaded combination of fluidyne engines for cooling a) (Langdon‐Arms, 2017; Langdon‐Arms et al, 2017, 2018) b) (Hashem, 2016; Mahkamov et al, 2014). …”

Section: Variants Of Lpsesmentioning

confidence: 99%

“…The cold side of these reverse U‐tubes created a cooling effect while the hot side rejected heat to the ambient. Similarly, Hashem (2016) and Mahkamov et al (2014) developed an experimentally validated numerical simulation of a solar‐driven two‐stage coupled LPSE to produce a net cooling effect. The solar evacuated tubes provided the heat input that caused oscillation of the liquid columns of the LPSE which propagated the oscillations to the cooling machine as in Figure 6b.…”

Section: Variants Of Lpsesmentioning

confidence: 99%

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Viability of low‐grade heat conversion using liquid piston Stirling engines

Mazhar,

Shen,

Liu

2024

WIREs Energy & Environment

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Liquid piston Stirling engines (LPSEs) are low‐cost, simple, maintenance‐free, and flexible external combustion engines with the potential to operate from low‐grade heat sources. This study reviews the major components, operations, and variants of LPSEs along with the mathematical models to assess their performance, which have been developed since the inception of LPSEs. Consequently, the technical feasibility of LPSEs in different applications is deduced from this complete systematic review, especially useful for both theoretical and applied researchers. The operation is based on a four‐stage Stirling cycle with most engines having three main components as per the findings of this study: the displacer columns, the regenerator, and tuning columns. The two main variants categorized by this study are the dry operating fluidyne and the wet operating thermofluidic. The accurate analyses of these engines are mostly within the spheres of experimental and numerical techniques since analytical mathematical models are difficult to develop owing to the complexity of the operating thermo‐physics. Pumping, cooling, and the direct generation of electricity are frequent applications of these engines reported in the literature. However, since their inception in 1969, these engines are yet to be commercialized owing to their low energy efficiency, power density, and reliability. The findings of this research conclude that LPSEs are essential for environment‐friendly pumping applications using low‐grade heat, especially in the irrigation sector of remote regions with limited access to electricity grids. Additionally, by replacing the electricity‐consuming status quo pumps, LPSEs ensure sustainability with minimal greenhouse gas emissions.This article is categorized under: Energy and Power Systems > Energy Management Sustainable Development > Energy‐Water‐Food Nexus Energy and Power Systems > Distributed Generation Sustainable Development > Goals

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“…Serially cascaded combination of fluidyne engines for cooling a) (Langdon‐Arms, 2017; Langdon‐Arms et al, 2017, 2018) b) (Hashem, 2016; Mahkamov et al, 2014). …”

Section: Variants Of Lpsesmentioning

confidence: 99%

Section: Variants Of Lpsesmentioning

confidence: 99%

Viability of low‐grade heat conversion using liquid piston Stirling engines

Mazhar,

Shen,

Liu

2024

WIREs Energy & Environment

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“…Equation (15) shows, for steady flow, the energy balance equation, where the potential and kinetic energy terms have not been considered, assuming that their influence is minimal.…”

Section: Ideal Isothermal Analysismentioning

confidence: 99%

“…Similarly, to obtain the pressure loss of load through the heat exchanger on the hot side, using the most current bibliography found that recommends for the calculation of the same [6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23].…”

Section: Pressure Drop Through the Heater (Dp H )mentioning

confidence: 99%

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Development and Validation of a Software Application to Analyze Thermal and Kinematic Multi-Models of Stirling Engines

et al. 2022

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Development and Validation of an Improved Quasisteady Flow Model with Additional Parasitic Loss Effects for Stirling Engines

Kim,

Park,

Sim

2024

International Journal of Energy Research

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This paper presents the development and validation of an improved quasisteady flow model (iQSFM) that applies comprehensive parasitic losses to the quasisteady flow model (QSFM) considering an oscillating flow, which is the actual type of flow occurring in a regenerator. Validation of iQSFM was evaluated by comparing it with a QSFM based on the experimental results of a RE-1000 regenerator. Compared to QSFM, iQSFM improved the prediction accuracy by reducing the indicated power error from 66.7% to 24.9% and the efficiency error from 35.3% to 9.4%. In addition, the prediction accuracy of iQSFM was compared when the oscillating flow and the steady flow correlation were applied to a regenerator. When iQSFM applied an oscillating flow correlation to the regenerator, it predicted the experimental results of RE-1000 slightly more accurately than in a steady flow correlation. Finally, the engine performance and parasitic losses were analyzed through a parameter study of RE-1000 using iQSFM. Through this, it was confirmed with iQSFM that the RE-1000 is designed to maximize the engine performance by minimizing the parasitic losses.

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Thermal Water Pumps on the Basis of Fluid Piston Solar Stirling Engine

Cited by 3 publications

References 2 publications

Viability of low‐grade heat conversion using liquid piston Stirling engines

Viability of low‐grade heat conversion using liquid piston Stirling engines

Development and Validation of a Software Application to Analyze Thermal and Kinematic Multi-Models of Stirling Engines

Development and Validation of an Improved Quasisteady Flow Model with Additional Parasitic Loss Effects for Stirling Engines

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