Abstract The aim of the paper is to present actual state techniques regarding influence cryogenic cooling in turning and milling process. Processing some materials impossible without tool or processed material. Hard-to-cut are increasingly used industry, so new methods these had be researched. Cryogenic most efficient method cool down turning, cutting tools. There a lot that not affected by low...

This research is concerned with the design and analysis of a geothermal based multi-generation system by applying both conventional and advanced exergy and exergoeconomic concepts. The proposed energy system consists of a dual-organic Rankine cycle (ORC) to vaporize liquefied natural gas (LNG) and produce electricity. A proton exchange membrane(PEM) electrolyzer is employed to produce hydrogen ...

Performance of electric motors and losses in terms heat temperature are reviewed this paper. Airgap eccentricity, electromagnetic performance, effect shown as factors affecting the efficiency. Several methods computer aided analyses listed. Temperature distribution an induction motor is through results a simulation. Different cooling reviewed. Future directions for research include cryogenic co...

Here, we propose a simple and inexpensive method for fish sperm cryopreservation. Sperm samples of the loach Misgurnus anguillicaudatus (Teleostei: Cobitidae) were diluted 7-fold by an extender containing 63.5 mM NaCl, 114 mM KCl, 20 mM Tris and 10% methanol. The cryogenic straws were placed in three kinds of self-made tubes which diameter was changed by commercially available materials and the...