Phase angle (a) degrees of crank rotation.

total enclosed volume has been made identical at an arbitrary value of 4.6. In each ease, the diagram at the extreme left is the work diagram for the expansion space, the one in the middle is for the compression space, and the diagram at the right is the total enclosed volume. Fig. 5.14(a) is the diagram resulting from the combination « ~ 0.45 tt rad, k - 2.9 r 0.3, and X=1.0, the optimum configuration based on Pmaw. Fig. 5.14(b) is the diagram resulting from a combination <* = 0.547r rad. « = 0.74, r = 0.3, and A'=1.0, the optimum combination based on Pl{Pm»% Vr). F'g- 5.14(c) is the diagram resulting from a modification to the configuration of big. 5.14(b) to adjust the absolute value of the dead space volume VD to be the same as in the configuration of big. 5.14(a).

Pig. S.I3. Ellect of swept-volume ratio w and phase angle a on cycle power. The figures are a three-dimensional representation of non-dimensional power parameters ns n function of the swept-volume ratio tt and the phase angle a, with constant values of the temperature ratio r 0.3. and the dead-space ratio ,V 1,0. Fig. 5.13(a) is a representation for the power parameter /'„,,„ (power per unit mass of working Utiid) and F'ig. 5.13(b) is a representation for the power parameter /'/(pnin, V-j) (power for limited size and weight). The apex of the surfaces (the maximum value of the power parameter) occurs at the optimum values of phase nngle « nnd swept-volume rati«» k. Iii case (a) aul„ = 0.»l5 tr radians and


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Solar Stirling Engine Basics Explained

Solar Stirling Engine Basics Explained

The solar Stirling engine is progressively becoming a viable alternative to solar panels for its higher efficiency. Stirling engines might be the best way to harvest the power provided by the sun. This is an easy-to-understand explanation of how Stirling engines work, the different types, and why they are more efficient than steam engines.

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