1987 Overview of Free-Piston Stirling Technology Tor Space Power Application

Slaby, J. G.; Alger, D. L.

doi:10.2514/6.1987-9068

Cited by 8 publications

(6 citation statements)

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“…Besides, helium gas with 7‐MPa pressure was used as the working fluid in this engine . Next, NASA in 1986 manufactured a FPSE called the SPDEs (Space Power Demonstrator Engines) with the output power of about 25 kW . This engine was employed in power generation for space applications.…”

Section: Manufactured Fpses and Their Commercial Applicationsmentioning

confidence: 99%

“…Moreover, the cold and hot sources temperatures were measured about 325 and 650 K respectively in this engine. It should be noted that SPDE was designed so as to operate at 100‐Hz frequency and considering pressurized helium gas at 15‐MPa pressure …”

Section: Manufactured Fpses and Their Commercial Applicationsmentioning

confidence: 99%

“…In addition, the majority of manufactured FPSEs were of single‐acting type (see Figure and Table ), which can be attributed to its simple mechanism. Besides, the use of gas spring and diaphragm instead of mechanical springs and pistons were effective issues to significantly remove the mechanical frictions and simplify the required sealing (eg, in RE‐1000 and SPDE). Although the Fluidyne FPSEs (see Figures and ) also have these features inherently; however, they usually operate at low frequency because of the high mass of the liquid pistons …”

Section: Manufactured Fpses and Their Commercial Applicationsmentioning

confidence: 99%

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Free piston Stirling engines: A review

Zare

Tavakolpour-Saleh

2019

Int J Energy Res

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This paper presents a detailed review on free piston Stirling engines (FPSEs) technology. Generally, the Stirling engines can be categorized into two broad classes comprising kinematic and dynamic converters among which FPSEs are known as the dynamic type. Other well-known dynamic Stirling converters are Fluidyne and thermosacoustic engines among which the thermosacoustic ones are the most advanced Stirling converters recently presented. In this research, the dynamic Stirling engines are first introduced and reviewed. Then, the review work is directed toward the FPSEs, one of the most reliable dynamic Stirling converters utilized in different applications such as combined heat and power systems (CHPs). Subsequently, the working principles of different types of FPSEs and their performance are summarized. Next, several manufactured FPSEs, as well as their corresponding features and applications, are discussed. Finally, the article is conducted to analysis and modeling approaches of FPSEs.Accordingly, linear and nonlinear analytical techniques of FPSEs are introduced, and some comparative data are provided to verify the modeling schemes. Then, various design parameters affecting the engine performance are introduced and studied. The outcomes of this review work demonstrate the potential of FPSEs for different applications and reveal that the perturbation-based model is likely the most comprehensive nonlinear method for modeling and design of the FPSEs.

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Section: Manufactured Fpses and Their Commercial Applicationsmentioning

confidence: 99%

Section: Manufactured Fpses and Their Commercial Applicationsmentioning

confidence: 99%

Section: Manufactured Fpses and Their Commercial Applicationsmentioning

confidence: 99%

See 1 more Smart Citation

Free piston Stirling engines: A review

Zare

Tavakolpour-Saleh

2019

Int J Energy Res

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“…Fast-variable electronically synthesized electrical loads are thought to be desirable for control of certain quick responding space power generating systems that work best delivering a constant power, as for example the free-piston Stirling engine coupled to a linear alternator [1]. Such loads are also useful for testing the transient response, or stability, of various power generating and conditioning systems to sudden load variations.…”

Section: Introductionmentioning

confidence: 99%

“…The instantaneous load current (I) produces a voltage drop IRg across the (fractional ohm) current sensing resistor (Rg). Within the range of normal operation, where the current control MOSFET shown is not saturated, the gate driving operational amplifier enforces the equality IRc kVcV (1) where VQ is a control voltage and k is the product of the multiplier constant and any attenuation factor applied to the source voltage (V). Therefore this circuit appears to the power source as a resistor of value…”

Section: Introductionmentioning

confidence: 99%