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Heat receivers for solar dynamic space power systems

Perez-Davis, Marla Esther
http://rave.ohiolink.edu/etdc/view?acc_num=case1055525095

Abstract Details

1991, Doctor of Philosophy, Case Western Reserve University, Chemical Engineering.
Growth of electrical power requirements for space missions has stimulated the development of power system concepts that are more efficient and lighter than the state-of-art technology. Solar dynamic power systems are being studied for such high power space missions. In recent heat receiver designs a latent heat storage material, such as a phase change salt, has been used as the thermal energy storage material. A review of state-of-the-art-technology is presented and discussed for phase change materials. Some of the advanced solar dynamic designs developed as part of The Advanced Heat Receiver Conceptual Design Study performed for NASA Lewis Research Center are discussed. The heat receivers are analyzed and several recommendations are proposed, including two new concepts. The first concept evaluated the effect of tube geometries inside the heat receiver. It was found that a triangular configuration would provide better heat transfer to the working fluid, although not necessary with a reduction in receiver size. The second involves a sensible heat receiver. A sensible heat receiver considered in this study uses vapor grown graphite fiber-carbon (VGCF/C) composite as the thermal storage media and was desig ned for a 7 kW Brayton engine. The proposed heat receiver stores the required energy to power the system during eclipse in the VGCF/C composite. The heat receiver analysis was conducted through the Systems Improved Numerical Differencing Analyzer and Fluid Integrator (SINDA) software package. The sensible heat receiver proposed in this study compares well with other latent and advanced sensible heat receivers while avoiding the problems associated with latent heat storage salts and liquid metal heat pipes. The weight and size of the system can be optimized by changes in geometry and technology advances for this new material. In addition to the new concepts, the effect of atomic oxygen on several materials is reviewed. A test was conducted for atomic oxygen attack on boron nitride, which experienced a neglible mass loss when exposed to an atomic oxygen fluence of 5 × 1021 atoms/cm2. This material could be used to substitute the graphite aperture plate of the heat receiver.
Donald Feke (Advisor)
175 p.
Heat receivers solar dynamic space power systems

Recommended Citations

Citations

  • Perez-Davis, M. E. (1991). Heat receivers for solar dynamic space power systems [Doctoral dissertation, Case Western Reserve University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=case1055525095

    APA Style (7th edition)

  • Perez-Davis, Marla. Heat receivers for solar dynamic space power systems. 1991. Case Western Reserve University, Doctoral dissertation. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=case1055525095.

    MLA Style (8th edition)

  • Perez-Davis, Marla. "Heat receivers for solar dynamic space power systems." Doctoral dissertation, Case Western Reserve University, 1991. http://rave.ohiolink.edu/etdc/view?acc_num=case1055525095

    Chicago Manual of Style (17th edition)

case1055525095
859
© 1991, all rights reserved.
This open access ETD is published by Case Western Reserve University School of Graduate Studies and OhioLINK.