Comparison of the Efficiency of Three Types of Solar Collectors
Journal Title: Analele Universitatii "Dunarea de Jos" din Galati. Fascicula IX, Metalurgie si Stiinta Materialelor - Year 2012, Vol 35, Issue 3
Abstract
Solar energy is one of the most abundant resources energy available in the world. Solar collectors have evolved in the last decades, but still they haven’t reached very high efficiencies. The collector efficiency is dependent on the temperature of the plate which in turn is dependent on the nature of the fluid flow inside tube, solar isolation, ambient temperature and top loss coefficient, the emissivity of the plate and glass cover. This paper presents the test results of three different solar collectors and compares their efficiency.
Authors and Affiliations
Catalin Bogdan MOCANU, Tanase PANAIT, Alexandrina TEODORU, Daniela TASMA
Variation of Mechanical Characteristics for Thin Wall Tubes Processed in Ultrasonic Field
The paper presents the variation of mechanical characteristics of resistance and plasticity for thin wall tubes made of stainless steel 10TiNiCr180, processed in ultrasonic field. Decrease of mechanical characteristics o...
A Tribological Model for Continuous Casting Equipment of the Steel
This paper presents a coupled thermo-elastic contact problem with tribological processes on the contact interface (friction, wear or damage). The unilateral contact between the cilindrical roll system and a deformable fo...
Modelling by Finite Element Analysis Method of Stress State Establishing for an Steel Alloy
The paper presents some results about the tension state in samples subject to pure bending fatigue process. Numerical simulation based on finite element method was used. The tension field induced by a vertical deformatio...
Influence of the Anodic Oxidation Treatment on the Corrosion Behaviour of Aluminium and Aluminium Alloys
This paper deals with the effect of anodic oxidation treatment on the corrosion behaviour of 6061 aluminium alloy in natural sea water. Anodic oxidation treatment leads to the formation of an amorphous oxide layer on the...
Study of Heat Treatment Influence on Aluminum - Based Alloy ATN-Si10Cu4
This work presents the experimental results concerning the behavior on heat treatment of on aluminum based alloy. The laboratory level experiments achieved on samples of ATN-Si10Cu4 (4145 series) alloy illustrate the va...