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A numerical model for recuperated power cycles for renewable power applications is described in the present paper. The original code was written in Python and results for a wide range of working fluids and operating point conditions are presented. Here, the model is applied to subcritical and transcritical Rankine cycles. It comprises a brute-force search algorithm that covers a wide parametric study...
The effect of the relative hot-to-cold side volume-ratios on dynamic characteristics of a CBC (closed Brayton cycle) with sCO 2 (supercritical carbon-dioxide) as the working-fluid is investigated in this study. The analysis of the CBC is conducted in the context of power generation in a direct-heated (no thermal-oil loop) and dry-cooled parabolic-trough solar thermal power plant, using a control-oriented...
The dynamics of a direct-heated closed Brayton power conversion system (PCS) with supercritical carbon-dioxide as the working-fluid (sCO 2 PCS) is investigated in this study. Simulations of the dynamic response of the sCO 2 PCS to changes in ambient air temperatures and solar energy input from parabolic trough collectors on representative days for summer and winter are presented. A...
Optimisation of Organic Rankine Cycle (ORCs) for binary-cycle geothermal applications could play a major role in determining the competitiveness of low to moderate temperature geothermal resources. Part of this optimisation process is matching cycles to a given resource such that power output can be maximised. Two major and largely interrelated components of the cycle are the working fluid and the...
In vivo, stem cell factor (SCF) exists in both a bound and soluble isoform. It is believed that the bound form is more potent and fundamentally required for the maintenance of hematopoietic stem cells (HSCs). This theory is supported by the observation that steel-Dickie mice lacking the bound isoform of SCF are unable to maintain hematopoiesis and by the fact that bound SCF displayed on the surface...
Vascular smooth muscle cells (VSMCs) isolated from rabbit aorta and immortalised A7r5 cells were cultured on conducting polypyrrole (PPy) substrates and were subjected to a 50μA sinusoidal electrical stimulation at 0.05, 5 and 500Hz. These substrates were doped with hyaluronic acid and coated with collagen IV followed by Matrigel ® in order to mimic the basement membrane and encourage cell...
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