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Experimental research of heat transfer and resistance characteristic of three sizes of corrugated tube and straight tube was done. The results show that the shape of the corrugated pipe enhances disturbance of liquid, and strengthens heat exchange ability of corrugated tube. Corrugated tube heat exchange ability increases while the ratio of corrugation pitch and external diameter of corrugated tube...
This work consists of analyzing and simulating a parabolic trough collector in order to bring out the evolution of its thermal performances, mainly the heat transfer fluid outlet temperature, the useful power and the thermal efficiency, and this under weather conditions of Errachidia region, located at the Southeast of MOROCCO. The capturing system collects energy using water as a heat transfer fluid,...
Vortex sonic flowmeters are widely used in the area of housing and public utilities due to their insensitivity to the quality of the measured fluid. Nevertheless, vortex shedding is unstable at low flow rates, which results in an increase of flow measurement errors within this range. This article describes the model of measurement equation for vortex sonic flowmeters based on experimental research...
Textile and Leather industries require hot water and steam extensively in different processes. To generate steam and heat oil, these industries use natural gas and heavy furnace oil. Natural gas is contributing 43.2% & Oil is contributing 34.12% in Pakistan's energy mix. But, currently the country is facing extreme natural gas shortages and Oil prices in the past few years have exponentially increased...
The solar industry is relatively mature, the cost of these products is stabilized and it is likely to evolve quite slightly over the upcoming years: other than a scale effect resulting from rapid growth markets, only a technological breakthrough in the act of conception, could significantly change the economic level. The following barriers are identified (in order of importance): financial, technical...
Heat transfer performance of tube bundles, which are widely used in practical applications, has been extensively investigated. Most previous experimental and numerical works for tube bundles have been performed with tube diameter in a range of 10 to 51mm and a Reynolds number of 8,000≤Re≤30,000. Recently, tube bundles with small diameter have garnered interest, since a mini-channel tube provides greater...
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