نتایج جستجو برای: cooling need
تعداد نتایج: 588719 فیلتر نتایج به سال:
In recent years it has become increasingly clear that Active Galactic Nuclei, and radio-galaxies in particular, have an impact on large scale structure and galaxy formation. In principle, radiogalaxies are energetic enough to halt the cooling in the inner regions clusters, solving the cooling flow problem and explaining the high-mass truncation of the galaxy luminosity function. We explore this...
the present paper describes the designing of a thermally and economically optimum mechanical draft counter-flow wet cooling tower. the design model allows the use of a variety of packing materials in the cooling tower toward optimizing heat transfer. once the optimum packing type is chosen, a compact cooling tower with low fan power consumption is modelled within the known design variables. mor...
AIM In this study, it was aimed to investigate which method was superior by applying selective head cooling or whole body cooling therapy in newborns diagnosed with moderate or severe hypoxic ischemic encephalopathy. MATERIALS AND METHOD Newborns above the 35th gestational age diagnosed with moderate or severe hypoxic ischemic encephalopathy were included in the study and selective head cooli...
Film cooling is a cooling technique widely used in highperformance gas turbines to protect the turbine airfoils from being damaged by hot flue gases. Motivated by the need to further improve film cooling in terms of both cooling effectiveness and coolant coverage area, the mist/air film cooling scheme is investigated through experiments in this study. A small amount of tiny water droplets (7% w...
temperature restrictions on aqueous effluents dictate that streams with a temperature higher than the permitted level needed to pass through cooling systems to reduce the effluent temperature before discharge. in this study, by considering the grouping design rules based on pinch technology, an optimum design for a distributed effluent cooling system, has been developed. a counter-flow wet cool...
Recent developments in applications such as computer data centers, electric vehicle power electronics, avionics, radars, and lasers have led to alarming increases in heat dissipation rate, which now far exceeds the capability of air cooling schemes and even the most aggressive single-phase liquid cooling schemes. This trend is responsible for a recent transition to two-phase cooling, which capi...
BACKGROUND Targeted temperature management is recommended after out-of-hospital cardiac arrest. Whether advanced internal cooling is superior to basic external cooling remains unknown. The aim of this multicenter, controlled trial was to evaluate the benefit of endovascular versus basic surface cooling. METHODS AND RESULTS Inclusion criteria were the following: age of 18 to 79 years, out-of-h...
the poultry slaughter processing in abattoirs may result in carcass contamination with different pathogens. this survey was carried out to evaluate the slaughtering process effects on hygienic status of poultry carcass slaughtered in hamedan industrial abattoir. for this purpose, samples were taken from breast skin surface with swab and template randomly. therefore, counting of total aerobic pl...
Cooling of datacenters is estimated to have an annual electricity cost of 1.4 billion dollars in the United States and 3.6 billion dollars worldwide. Currently, refrigerated air is the most widely used means of cooling datacenter’s servers, which typically represents 40e45% of the total energy consumed in a datacenter. Based on the above issues, thermal designers of datacenters and server manuf...
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