Vellore Institute of Technology (VIT) is a private university located in&nbsp;Tamil Nadu, India. Founded in 1984, as Vellore Engineering College, the institution offers 20 undergraduate, 34 postgraduate, four integrated and four research programs. It has campuses in Vellore, Amravati, Bhopal and Chennai.

VIT is one of the top ranked private universities in India according to NIRF, THE and QS Rankings.&nbsp;Govt. of India has recognized&nbsp;VIT, Vellore as an&nbsp;Institution of Eminence. This has allowed VIT to take independent quality initiatives and move up in world ranking.

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VIT University

Use of shade net over the roofs could be one of the economic ways to reduce heat gained by the buildings in arid regions. Model rooms with reinforced cement concrete (RCC) and galvanized iron (GI) sheet roofs were set up in the open field. 50% shading nets were tried over the roofs of the model rooms at a height of 125&nbsp;mm from the roof top surface. From the experiments, it is concluded that using shade net over GI sheet roof can be as good as a RCC roof without shade net. These shade nets are found to cause negligible adverse effects on the night time cooling. Around 8 and 16&nbsp;°C reduction in peak temperatures of roof surfaces due to shade net were observed in RCC and GI sheet roof cases, respectively. In turn, 1 and 2&nbsp;°C reduction in average inside air temperatures has been observed in the respective cases.

Department of Automotive Engineering

School of Mechanical Engineering

Vellore Campus

Sustainable Urban Architecture. Lecture Notes in Civil Engineering

Shade Net to Reduce Building Cooling Load: An Experimental Study with RCC and GI Sheet Roofs

Use of shade net over the roofs could be one of the economic ways to reduce heat gained by the buildings in arid regions. Model rooms with reinforced cement concrete (RCC) and galvanized iron (GI) sheet roofs were set up in the open field. 50% shading nets were tried over the roofs of the model rooms at a height of 125 mm from the roof top surface. From the experiments, it is concluded that using shade net over GI sheet roof can be as good as a RCC roof without shade net. These shade nets are found to cause negligible adverse effects on the night time cooling. Around 8 and 16 °C reduction in peak temperatures of roof surfaces due to shade net were observed in RCC and GI sheet roof cases, respectively. In turn, 1 and 2 °C reduction in average inside air temperatures has been observed in the respective cases. © 2021, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.

Lecture Notes in Civil Engineering

Shade Net to Reduce Building Cooling Load: An Experimental Study with RCC and GI Sheet Roofs

Six test rooms each with different roof type (RCC roof; galvanized iron sheet roof; lawn over RCC roof; wet-sand bed over RCC roof; clay tile roof and thatched roof) under summer weather conditions are studied to analyze and quantify the role of roof element in reducing solar gain. The study also addresses the effects of roofing element on the test room temperatures. Results have shown that, lawn over the RCC roof could be the best choice among the considered. On the other hand, clay tile roof and thatched roof are found to be better than RCC roof as far as heat gain is considered. It is also observed that, clay tile roof providing better breathing effects as compared to thatched roof. © 2020 International Information and Engineering Technology Association. All rights reserved.

International Journal of Heat and Technology

Heat transfer characterization of test rooms with six different roofs

Flotation process involves aggregation of the particles based on the material/compound type of random mixtures such as ores and seawater. It is primarily used in pretreatment of water desalination and other industrial applications. The process makes use of various fluid mechanics principles as multifluids are involved. The multi-fluids in most of the flotation processes are of different phases, such as air and water. Like any other process, the efficiency of flotation is important, and hence most of the studies have been dedicated to understanding how the various parameters are affecting the flotation process. Among various parameters, fluids properties and flow parameters chiefly affect the flotation process. In particular, the bubble-particle interaction of the flotation process has been of interest as it is one of the cost-effective ways to enhance flotation efficiency. In this review, the authors present the latest developments in such parametric studies. This paper could be of interest to research students, academic researchers, and practitioners who want to contribute to (or take from) flotation research. © 2020. Wroclaw University of Science and Technology. All Rights Reserved.

World University root node

Physicochemical Problems of Mineral Processing

Dynamics of bubble-particle interaction in different flotation processes and applications - a review of recent studies

Controlled cooling of the fuel channels in a calandria based reactor is important to avoid any hazardous aftermath. On the other hand, efficient cooling of the fuel channels can also ensure better utilization of the fuel in electricity generation. In this regard, simple modifications which can cause significant increase in the efficiency are appreciable; in particular, in the case of existing nuclear reactors. In this paper, we have discussed (a) the thermal and flow characteristics of the heavy water inside the traditional calandria based reactor and, (b) the effect of the introduction of a splitter near the heavy water inlet on the cooling efficiency. It is observed that the mass flow rate and inlet orientation have a significant effect on the convective heat transfer from the fuel channels to the heavy water. The underutilization of the heavy water in cooling the fuel channels in the traditional calandria design was speculated from the CFD analysis. The effect of introduction of a simple splitter (aerofoil shaped body) near the inlet was hence studied by carrying out CFD simulations. The latter seems to cause considerable decrease in the temperatures inside the calandria. The comparative analysis has shown that the splitting of the flow near the inlet can keep the calandria operating temperature under the safe limits for the same mass flow rate but for higher thermal power output. © 2019, Chinese Mechanical Engineering Society. All right reserved.

Journal of the Chinese Society of Mechanical Engineers, Transactions of the Chinese Institute of Engineers, Series C/Chung-Kuo Chi Hsueh Kung Ch'eng Hsuebo Pao

Heat Transfer Enhancement in a Calandria Based Reactor With a New Inlet Design - A CFD Analysis

Continuous heat removal from the fuel channels in the calendria based reactor is important to avoid any hazardous aftermath. The primary objective of present study is to analyze heat removal capacity of calendria for four different fuel channel configuration. As a design optimization point of view there will be many design parameters need to optimize, in the former analysis, it was observed that the mass flow rate and inlet orientation have a significant effect on the convective heat transfer from the fuel channels to the moderator. The combination of mass flow rate and the inlet angle leading to lowest maximum temperatures inside the calendria was found to cause the underutilization of the calendria. Hence the latter part of the analysis has been carried out in the direction of improving the efficiency of the calendria by splitting the mass of flow near the inlet. In the present paper, the discussion has been done on heat removal capacity of calendria based reactor for inline and staggered fuel channel configurations. The numerical study shows that square pitch 900 inline arry configuration is better as compared to other considered configurations. © ICCFD 2018.

10th International Conference on Computational Fluid Dynamics, ICCFD 2018 - Proceedings

Fluid flow and heat transfer analysis in a calandria based reactor for different fuel channel configurations

Clay pots are being widely used in hot-arid/tropical regions for reducing the temperature of the drinking water and this is due to the evaporative heat losses from the clay pot surface. However, excessive water loss from the surface is inevitable as the clay pot is porous. In this paper, strategy to reduce such unwanted water loss has been presented. It has been observed that more than 50% of water loss can be reduced without compromising the cooling effect. © Published under licence by IOP Publishing Ltd.