Abstract Although many correlations have and are being developed for two-phase heat transfer coefficient correlation in microchannels, none has the desired accuracy yet. This paper presents prospective improvements convective dry-out conditions; when drops at a certain vapor quality. An accurate forecast is needed to minimize over or under design, conserve energy material, maximize performance....

Two Na(I) coordination polymers, namely, {Na(BA)2(μ-H2O)2}n{adp}n (1) and {[Na2(μ-BA)(μ-fum)(μ-H2O)4](BA)}n (2) (where, BA = boric acid, adp adipic fum fumarate),were prepared characterized using elemental analysis, TGA, FT-IR, single-crystal X-ray diffraction techniques. Various unconventional supramolecular interactions, i.e., CH∙∙∙HC parallel CO∙∙∙CO stabilize the layered assembly of compoun...

Organic Rankine Cycle (ORC) is an attractive option to utilize the low-grade waste heat for power generation. The selection of working fluid ORC a challenging task because environmental constraints as most organic fluids has capacity damage environment. In this research, method optimum operation low grade determined. depends upon thermal efficiency, Global Warming Potential (GWP), Ozone Depleti...

The first phase of a project at Sunpower, Inc. sponsored by the EPA is described. The program involves the design, computer simulation and fabrication of a high efficiency linear compressor for application in domestic refrigeration. The use of a high efficiency electric motor and non-contact operation can dramatically reduce the electrical and friction losses associated with crank compressors. ...

The application of biomass models for quantifying forests’ above-ground is essential sustainable forest management. However, lack knowledge in modelig individual tree growth hinders the management Dry Afromontane forests. In this study, to estimate were developed Rhus ruspolii, Ekebergia capensis, and Nuxia congesta. To develop models, a total 45 trees from different diameter classes selected, ...