Santanu Prasad Datta

Bio: Santanu Prasad Datta is an academic researcher from Birla Institute of Technology and Science. The author has contributed to research in topics: Evaporative cooler & Pressure drop. The author has an hindex of 10, co-authored 30 publications receiving 223 citations. Previous affiliations of Santanu Prasad Datta include Indian Institute of Technology Kharagpur & Jadavpur University.

An improved mini-channel based liquid cooling strategy of prismatic LiFePO4 batteries for electric or hybrid vehicles

Abstract: Li-ion batteries are one of the most widely used energy storage devices owing to their relatively high energy density and power, yet they confront heating issues that lead to electrolyte fire and thermal runaway, especially in automotive applications. A well-designed thermal management system is necessary to mitigate the thermal issues occurring in high charge/discharge conditions. Keeping this in view, an ingeniously designed rectangular mini-channel cold plate is proposed to sandwich in between two consecutive 7Ah prismatic lithium iron phosphate (LiFePO4) batteries with a provision of coolant flow through the mini-channels across the cold plate to form a battery module. A numerical model for the varying channel number, channel width, coolant flow rate, coolant and ambient temperature, etc. to uphold the battery module temperature within the range of 25 °C-40 °C is developed in COMSOL Multiphysics 5.4. A detailed thermodynamic analysis suggests that a cold plate comprising 5 mini channels of width 4 mm with parallel flow design, and water entry near to the charging port with a flow rate of 0.003 kg.s − 1 and temperature of 25 °C as the ideal trade-off between heat transfer and pressure drop for better thermal management across the battery module. A uniform heat propagation in longitudinal direction justifies the optimum design of the cold plate.

Ionic thermoplastic elastomer based on maleated epdm rubber. I. Effect of zinc stearate

Abstract: Neutralization of maleated EPDM rubber by zinc oxide results in an ionic elastomer. The rate and extent of the neutralization reaction increase by addition of stearic acid. Although the rubber is not easy processable as such, incorporation of zinc stearate at a loading of 30 phr makes the rubber behave the rubber behave like a thermoplastic during high temperature (≥ 150°C) processing. Furthermore, zinc stearate causes improvement in the physical properties of the rubber under ambient conditions. It is believed that zinc stearate acts as a reinforcing filler under ambient conditions and as a plasticizer for the ionic domains at higher temperature (that is, above its melting point, 128°C). The conclusions are based on the results of dynamic mechanical, rheological, and infrared spectroscopic studies. © 1996 John Wiley & Sons, Inc.

Heating and cooling energy trends and drivers in buildings

Abstract: The purpose of this paper is to provide a source of information on thermal energy use in buildings, its drivers, and their past, present and future trends on a global and regional basis. Energy use in buildings forms a large part of global and regional energy demand. The importance of heating and cooling in total building energy use is very diverse with this share varying between 18% and 73%. Biomass is still far the dominant fuel when a global picture is considered; the role of electricity is substantially growing, and the direct use of coal is disappearing from this sector, largely replaced by electricity and natural gas in the most developed regions. This paper identifies the different drivers of heating and cooling energy demand, and decomposes this energy demand into key drivers based on a Kaya identity approach: number of households, persons per household, floor space per capita and specific energy consumption for residential heating and cooling; and GDP, floor space per GDP, and specific energy consumption for commercial buildings. This paper also reviews the trends in the development of these drivers for the present, future – and for which data were available, for the past – in 11 world regions as well as globally. Results show that in a business-as-usual scenario, total residential heating and cooling energy use is expected to more or less stagnate, or slightly decrease, in the developed parts of the world. In contrast, commercial heating and cooling energy use will grow in each world region. Finally, the results show that per capita total final residential building energy use has been stagnating in the vast majority of world regions for the past three decades, despite the very significant increases in energy service levels in each of these regions.

Hypohidrotic ectodermal dysplasia

Abstract: The authors report a case of Hypohidrotic ectodermal dysplasia (Christ-Siemens-Touraine syndrome). Diagnosed at the age of 2 months.

A review of solar powered absorption systems

Abstract: For the last two centuries, fossil fuel has been considered and utilized as the main source of energy. However; the negative impacts of burning fossil fuel on the environment have forced the energy research continuity to seriously consider renewable sources of energy. Solar energy, in particular, has been the main focus in this regard because it is a source of clean energy and naturally available. Solar energy applications include solar photovoltaic and solar thermal. Solar thermal systems are used to power absorption refrigeration and air-conditioning systems. This study presents a review of recent published work in the field of solar powered absorption systems which utilize pairs of working fluid. The focus in this study is on solar powered absorption refrigeration systems, diffusion absorption systems, ejector based absorption systems, compression absorption systems and cogeneration/trigeneration absorption systems. The thermodynamic properties of most common working fluids as well as use of ternary mixtures in solar powered absorption systems have been reviewed in this study. The review indicates that along with aqua-ammonia and LiBr–water, there are certain other working fluids that have theoretically shown good performance such as lithium nitrate–ammonia, sodium thiocyanate–ammonia, TFE–TEGDME, methanol–TEDGME, monomethylamine–water and LiCl–water. It is also found that, for diffusion absorption systems, TFE–TEGDME working pair have theoretically shown good performance. The review also indicates that the ternary mixture of LiBr:CHO2K–water have shown good performance compared to other ternary mixtures.