..., such important parameters as subcooling and superheat, evaporating and condensing pressure are not well controlled because the flow rate is passively determined by the tube size, pressure difference, and degree of subcooling, etc. 5 . heat pumps refrigerants thermal expansion specific heat valves...

... loads, to structural distortions arising from differential thermal expansions in the structure, to small-scale mirror facets and the subsequent processing of the photogrammetric data to provide optical and ray-trace analysis of the facet performance. In addition to both the internal and external...

... by the ASME Solar Energy Division, Oct. 1999. final revision, Jul. 2000. Associate Technical Editor: T. Mancini. thermal expansion solar absorber-convertors pumps carbon steel alloy steel Gases or vapors have generally been used as the working substances for solar-thermal machines...