Swati Singh ¹, Gurpreet Singh ¹, Amit Singla ¹

Affiliations
1 Department of Mechanical Engineering, Chandigarh University, Gharuan - 140413, Punjab, IN

Abstract

Objective: The present study was made to investigate the enhancement in the heat transfer characteristics of CuO water base nanofluids by inserting the baffles in the annulus of the double pipe heat exchanger. Statistical Analysis: The experimentation was carried out with distilled water and copper oxide water base nanofluids at 0.1% and 0.2% volume concentration. The effect on heat transfer coefficient and Nusselt number is determined in this experiment at various temperatures. Findings: It has been observed that in comparison to the distilled water, copper oxide nanofluids with baffles shows more heat transfer enhancement. The result showed that the Nusselt number increased by 8% without introducing baffles and nanofluids and 10-12% enhancement was observed with baffles and nanofluids. The enhancement of 22-25 % has been observed in the heat transfer coefficient at 0.1% volume concentration and 25-30 % of enhancement 0.2% volume concentration. Applications: In automobile radiators, cooling towers, air preheaters, refrigeration, air conditioning, condensers etc double pipe heat exchanger with baffles inserts can be easily implemented.

Keywords

Baffles, Copper Oxide Nanofluids, Double Pipe Heat Exchanger, Heat Transfer Coefficient, Nusselt Number.

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Harkinder Kaur ¹, Amanpreet Kaur ², Harsh Sohal ², Isha Gupta ², Swati Singh ², Surbhi Nagpal ³

Affiliations
1 Department of Computer Science & Engineering, Chitkara University Institute of Engineering & Technology, Chitkara University, IN
2 Department of Electronics & Communication Engineering, Chitkara University Institute of Engineering & Technology, Chitkara University, IN
3 Techno planet labs Pvt Ltd, Faridabad - 121003, Haryana, IN

Abstract

In the following work RAM_Write_Control module has been designed and its performance has been analyzed in terms of utilization of power and energy in order to make it energy and power efficient. The main idea behind this unit is to control the data write operation to the core which is used for saving the raw data in impedance measurement module of Electrical Impedance Tomography (EIT) system, KHU Mark 2.5. The performance of the unit is analyzed using 14.2 version of Xilinx software at Virtex-5 FPGA chip. The total power consumption of 3 logic families HSTL (High Speed Transceiver Logic), LVCMOS (Low Voltage Metal Oxide Semiconductor) and LVTTL (Low Voltage Transistor-Transistor Logic) at different I/O Standards have been compared in order to excrete out the most energy efficient logic family. Frequency scaling technique has also been applied by varying the frequencies at a scale of 100 Hz i.e., from 400MHz to 500 MHz to 600 MHz to 700 MHz in a way to find out the most power efficient frequency. It has been observed minimum power consumption occurs in case if we use LVCOMS15 I/O standard of LVCMOS logic family in comparison to other IO standards of other 2 logic families. And this maximum power savage occurs at a lowest frequency of 400 MHz.

Keywords

Energy Efficiency, EIT RAM, FPGA, System, WRITE CONTROL, Xilinx.

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