International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395 -0056
Volume: 04 Issue: 04 | Apr -2017
p-ISSN: 2395-0072
www.irjet.net
IMPROVISING HEAT TRANSFER RATE IN COUNTER FLOW HEAT EXCHANGER BY USING FRAXINUS Mr.D. Vinoth Raj1, Mr.R. Selvaraj2 1Assistant 2Assistant
professor, Dept. of Mechanical engineering, MZCET, Pudukkottai-India. professor, Dept. of Mechanical engineering, MZCET, Pudukkottai-India.
---------------------------------------------------------------------***--------------------------------------------------------------------2. EXPERIMENTAL SETUP Abstract - This article reports an experimental study on the free convective heat transfer and flow characteristics of a water and different volume concentrations of fraxinus (5 and 10) % flowing in a counter flow heat exchanger. The fraxinus nanoparticles of about 18 nm diameter are used in the present study. The experimental data carried out based on two time intervals of two volume concentrations at same mass flow rates. The results show that the heat transfer rate will be increased due to mixture concentrations of water and fraxinus with the base fluid at the same mass flow rate. However increasing the volume concentration causes increase in the capability of the heat conduction leading to increase in heat transfer rate. Due to this situation a maximum heat transfer rater was increased at a short time period. So, a locally available by product from the power plants is used. It is easily available, the cost is less and very effective too for increasing heat transfer rate.
To design a project that could be used to transfer heat from hot water in a heat exchanger to a mixture of fraxinus concentrations of cold fluid. For monitoring purpose two thermocouples are installed flow meters. And a stop watch is used to get experimental values of particular time intervals. This systems fully based on free convective heat transfer. So its function and handling is easy compared to the other. Area of the tube: 0.0314 m2 Specific heat of fraxinus mixed with water: 4.3671 kJ/kg0C.
3. EXPERIMENTAL DATA AND CALCULATIONS To investigate counter flow heat exchanger performance, the three conditions based experimental data is collected as tabulated below.
Key Words: counter flow heat exchanger, fraxinus.
Table-1: Results of counter flow heat exchanger. (Normal water)
1. INTRODUCTION As the name implies industrial heat exchangers are pieces of industrial equipment which are designed to exchange or transfer heat from one medium to another. The heat exchange may be for the primary purpose of heating up elements or cooling it down. Today for our energy needs, we mostly concentrate on effective usages of energy. Energy generation is mostly done by the power plant industries. In this power plant, huge amount of water is required to convert into steam. After the process, it will be converted into low pressure gas or water droplets. For safety purpose we need to maintain very low material temperature. So we need to reduce the temperature.
Time S.No
|
Impact Factor value: 5.181
Flow rate L/Sec
Cold water Cold fluid temperature ti (0C)
to (0C)
1
300
0.35
60.1
56.7
0.37
31.7
36.8
2
600
0.35
61.2
53
0.37
31.8
36.5
Table-2: Experimental results of counter flow heat exchanger (Normal water + 5% of Fraxinus) Time S.No
At this fracture, we need to use the heat exchanger. The advantage of heat exchanger is that, there is no need of purest form of water. So in this work we add fraxinus particles into normal water. Due to this activity the heat transfer rate will be reduced. Because of this, specific heat increases with the distilled water and fraxinus particles.
Š 2017, IRJET
Sec
Hot water Flow Hot fluid rate temperature L/Sec Ti (0C) To (0C)
|
Sec
Hot water Flow Hot fluid rate temperature 0 L/Sec Ti ( C) To (0C)
Cold water contains 5% of Fraxinus Flow Cold fluid temperature rate L/Sec ti (0C) to (0C)
1
300
0.35
60.1
52.7
0.37
32
38.7
2
600
0.35
61.2
53
0.37
32.5
39.2
ISO 9001:2008 Certified Journal
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