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This paper examines experimentally the performance of direct evaporative cooling system for the hot and dry climate of Vidarbha region (Wardha, Maharashtra, INDIA, 20.75° N, 78.60° E). The evaporative cooling system of larger capacity has been designed for effective cooling of classrooms and laboratory spaces of Bajaj Institute of Technology, an engineering institution located at Wardha District. The cooling structures existing in the literature might not be appropriate for this weather condition. Keeping in view this problem, an evaporative cooling section is fabricated using newly developed porous-cellulose material, structured in the form of a honeycomb, to meet the comfort necessities of hot and dry ambience. The evaporative cooling systems of capacity 6000 CFM have been commissioned in the cooler chambers associated with the amenities described above. Experiments have been conducted in the summer months to examine the saturation efficiency of the system, for various test situations in the amenities. In order to reduce the penetration of sound into the conditioning rooms, the effect of Nitrile rubber sheets was also examined. The direct evaporative cooling system exhibited a saturation efficiency ranging from 45.0% to 68.0% for the different test situations in amenities. The provision of Nitrile rubber inside the walls of cooler chamber could reduce the sound intensity by about 18.8%. [ABSTRACT FROM AUTHOR]

Due to intrinsic or extrinsic conditions, the number of car accidents has increased currently across the globe. Drivers must be assured that they can avoid these problematic conditions. According to the statistics, about 10,000 are dead, and more than a million people are wounded each year in India. Hence, improvement in the safety of vehicles is of utmost importance to shoot down the number of accidents. The automotive bumper beam is one of the essential components in passenger cars. Bumper beams reduce or minimize the extent of impact caused at the front and rear ends during a collision in passenger vehicles. It absorbs the impact energy. The important physical parameters in the bumper beams such as material, size, and design to improve the extent of crashworthiness are studied and discussed in this current work. Comparative analysis between 2 mm thickness and 4 mm thickness bumper with honeycomb structure is studied. An ideal design composition is considered. This helps in advanced safety precautions. [ABSTRACT FROM AUTHOR]

A honeycomb double exposure solar still has been designed to enhance the productivity throughout the day. Experiments have been carried out to predict the performance of the proposed still in October 2009, Karpagam University, Coimbatore, India. The concept of transparent honeycomb structure with thin walled glass tube of small aspect ratio (H/D ≈ 1.7) in the basin and also planar reflector for east, west and south facing walls from the outer surface is implemented in this modification. The emphasis is to study the effect of the transparent honeycomb in the basin on the productivity of the still. It has been found that the still receives large amount of radiation and daily output increased by 25% than ordinary double exposure solar still. [ABSTRACT FROM AUTHOR]