International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395-0056
Volume: 10 Issue: 04 | Apr 2023
p-ISSN: 2395-0072
www.irjet.net
Numerically and CFD studies on shell and tube heat exchangers Chandrashekhar Pawar1, Purushottam Sahu2, Ghanshyam Dhanera3 1Reseach scholar, BM College of Technology, Indore
2Professor and HEAD BM College of Technology, Indore 3 Professors, BM College of Technology, Indore
---------------------------------------------------------------------***--------------------------------------------------------------------Abstract - This study aims to investigate the effect of different baffle layouts on the STHX (rate of heat transmission and pressure
loss) of the A tube heat exchanger. The addition of baffles to the tube and shell mechanism enhances the heat switch while also boosting pressure. Best one, doubled, helical, triple section, and flowery baffles are used in tube heat exchangers, and they are designed using SOLIDWORKS go with the flow simulation software (ver. 2015). A single segmental baffle exhibits the best mass price and heat transmission rate on the shell side, according to simulation results. There are almost no stagnation zones inside the helical baffle, which results in significantly less fouling and a longer operating lifetime due to less flow-induced vibration.
Key Words: Kern's theoretical approach, ASPEN Segmental baffles, Helical baffles, Flower baffles, Heat transfer coefficient, Pressure drop, SOLIDWORKS flow simulation.
1. INTRODUCTION One of most strongly crucial components of a nation's economic and social development is the production of energy. Demand for natural resources and energy is rising daily as a result of population growth, industrialization, urbanisation, and expanding global trade and production opportunities. The usage of fossil fuels as a source of energy, dependency on foreign sources of fuel, high import costs, environmental issues, and the quick depletion of global fossil fuel reserves all raise the importance of renewable energy sources. Currently, renewable energy sources account for 20% of global energy consumption [1]. A power production system called the Organic Rankine Cycle (ORC) runs at low temperatures and substitutes hydrocarbonbased organic working fluids for water. Models of different complexity levels for shell-and-tube heat exchangers The study and analysis of several heat exchanger models has been conducted. The general presumptions made by all of the models are outlined in the list below. 1. Radiation and heat transport rates in fluids are insignificant. Axial heat is also negligible in both fluids. 2. The heat capacity of the tube walls is zero in both the normal direction and the direction. 3. The thermal capacitance of the heat transmission shell is disregarded. that is only one dimensional and flow-oriented. 2 Methodologies: the use of heat exchangers A separate, in-depth research will be needed to cover each area of the application of heat exchangers because it is such a vast topic. Their use is frequently found in home appliances, mechanical equipment, and the process sector. District systems can be heated using heat exchangers, which are increasingly being used nowadays. In order to condense or evaporate the fluid, heat exchangers are utilised in air conditioners and freezers. They also work in pasteurisation units in milk processing facilities. [3]. Heat Transfer Characteristics. The inlet/outlet temperature differential on the shell side, inlet/outlet pressure drop on the tube side, heat transfer area of the working fluid on the shell side, and heat transfer coefficient of the tube wall were all calculated using numerical analysis. First, the temperature difference on the shell side was calculated as the difference between the measured inlet and outlet temperatures. Likewise, the pressure drop was also calculated as the difference between the measured inlet and outlet pressures.
2. Methodology: 2.1 STHX's layout with the simulation tool ASPEN A heat exchanger can be designed, rated, simulated, and priced using this software. Here, the heat exchanger created using Kern's theoretical approach is simulated using ASPEN. All the information pertaining to the heat exchanger's geometry and the
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