Thermodynamic Properties of Mixtures of Nitrogen, Argon, and Oxygen, Including Air

Lemmon, Eric W.; Jacobsen, R. T.

doi:10.1007/978-1-4757-9047-4_160

Cited by 4 publications

(4 citation statements)

References 28 publications

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“…The calculations have been carried out with EES (Engineering Equation Solver) [30]. The properties of water, thermal oil (Therminol VP-1) and air have been taken from the EES library [31][32][33]. It is essential to note that inlet temperatures of up to 85 o C were considered for water and inlet temperatures of up to 300 o C were considered for Therminol VP-1 and air.…”

Section: Numerical Modelmentioning

confidence: 99%

Experimental investigation and parametric analysis of a solar thermal dish collector with spiral absorber

Pavlović

Bellos

Roux

et al. 2017

Applied Thermal Engineering

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Highlights • A solar dish collector with spiral absorber is investigated experimentally. • A thermal model developed in EES is validated with experimental results. • Water, thermal oil and air are examined at various mass flow rates and temperatures. • Maximum exergetic efficiency is 7.58% for thermal oil at inlet temperature of 155 °C. • System is feasible where solar potential is 1600 kW h/m 2 and heating cost 0.15 €/kW h.

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Section: Numerical Modelmentioning

confidence: 99%

Experimental investigation and parametric analysis of a solar thermal dish collector with spiral absorber

Pavlović

Bellos

Roux

et al. 2017

Applied Thermal Engineering

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“…Note that the thermal conductivity of the p-and n-leg materials is around 1 Wm −1 K −1 for the materials considered here. For the thermal conductivity of still air, κ ≈ 0.02 − 0.04 W m −1 K −1 for the temperature range considered here [Lemmon et al, 2000], the efficiency is 8 − 9% for small leg separations. Fig.…”

Section: Modulementioning

confidence: 82%

Analysis of the internal heat losses in a thermoelectric generator

Bjørk

Christensen

Eriksen

et al. 2014

International Journal of Thermal Sciences

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A 3D thermoelectric numerical model is used to investigate different internal heat loss mechanisms for a thermoelectric generator with bismuth telluride p- and n-legs. The model considers all thermoelectric effects, temperature dependent material parameters and simultaneous convective, conductive and radiative heat losses, including surface to surface radiation. For radiative heat losses it is shown that for the temperatures considered here, surface to ambient radiation is a good approximation of the heat loss. For conductive heat transfer the module efficiency is shown to be comparable to the case of radiative losses. Finally, heat losses due to internal natural convection in the module is shown to be negligible for the millimetre sized modules considered here. The combined case of radiative and conductive heat transfer resulted in the lowest efficiency. The optimized load resistance is found to decrease for increased heat loss. The leg dimensions are varied for all heat losses cases and it is shown that the ideal way to construct a TEG module with minimal heat losses and maximum efficiency is to either use a good insulating material between the legs or evacuate the module completely, and use small and wide legs closely spaced.Comment: 11 pages, 9 figure

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“…To assess the thermodynamic properties of processes and machines, balancing units with closed system boundaries must be determined [10,[20][21][22][23][24][25][26][27][28][29][30]. The boundaries defined according to the investigated IR drying unit are presented in Figure 4.…”

Section: Definition Of System Boundariesmentioning

confidence: 99%

Approach toward a thermodynamic analysis on the drying and curing process of textile reinforcements for construction applications as a basis for continuous process control and optimization

Hahn

Hong

Treppe

et al. 2019

Journal of Industrial Textiles

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The development of energy-efficient textile manufacturing procedures is a crucial factor for cost reduction, potentially leading to the further establishment of technical textiles for industrial applications. In the textile sector, drying processes are responsible for the largest share of the total energy demand required by the manufacturing process. The performed investigations reveal that this fact also applies to infrared-based drying and curing procedures involved in the manufacturing of textile reinforcing structures for construction applications. The relationship between the temperature of the coated textile grid-like structure during drying and curing and infrared emitter power was analyzed and optimized. In addition, a thermodynamic concept was developed to replace the iterative setting of production parameters, such as infrared emitter power and machine speed. Thus, measurable process control parameters were identified that decisively influence the drying and curing process of textile reinforcements. The results of these investigations form the basis for procedural improvements (optimization variables: energy, time, and quality) as well as for the continuous monitoring of the drying and hardening process of textile reinforcements.

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Thermodynamic Properties of Mixtures of Nitrogen, Argon, and Oxygen, Including Air

Cited by 4 publications

References 28 publications

Experimental investigation and parametric analysis of a solar thermal dish collector with spiral absorber

Experimental investigation and parametric analysis of a solar thermal dish collector with spiral absorber

Analysis of the internal heat losses in a thermoelectric generator

Approach toward a thermodynamic analysis on the drying and curing process of textile reinforcements for construction applications as a basis for continuous process control and optimization

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