Experimentation on Augmenting Heat Transfer Characteristics of (Ethylene Glycol + Water) Mixture in A Combined (Pipe in Pipe and Shell & Tube) Heat Exchanger
M.P.V.L.Prasanna1, P.Ravindra Kumar2, B.Emmanuel3, K.Lakshmi Prasad4
1Melam Pavani Venkata Lakshmi Prasanna, PG Scholar. Department of Mechanical Engineering, Lakireddy Bali Reddy College of Engineering (Autonomous). Mylavaram, Andhra Pradesh, India.
2Pasupuleti Ravindra Kumar, Professor. Department of Mechanical Engineering, Lakireddy Bali Reddy College of Engineering (Autonomous). Mylavaram, Andhra Pradesh, India.
3Buradagunta Emmanuel, PG Scholar. Department of Mechanical Engineering, Lakireddy Bali Reddy College of Engineering (Autonomous). Mylavaram, Andhra Pradesh, India
4Kadari Lakshmi Prasad, Asst. Professor. Department of Mechanical Engineering, Lakireddy Bali Reddy College of Engineering (Autonomous). Mylavaram, Andhra Pradesh, India.
Manuscript received on 12 August 2019. | Revised Manuscript received on 17 August 2019. | Manuscript published on 30 September 2019. | PP: 4442-4449 | Volume-8 Issue-3 September 2019 | Retrieval Number: C5550098319/2019©BEIESP | DOI: 10.35940/ijrte.C5550.098319
Open Access | Ethics and Policies | Cite | Mendeley | Indexing and Abstracting
© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC-BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: In this research work, the design of pipe in pipe, shell-and-tube and combined heat exchanger (previously mentioned types were combined to consider as one unit) has been made. These three heat exchangers have been utilized for two kinds of flows i.e., parallel as well counter flow types individually. The design of combined heat exchanger takes been proposed with the idea of increasing the heat transfer area and to understand the behavior of various parameters involved by comparing with the individual heat exchangers. 75:25 aqueous Ethylene Glycols, have been used as the working fluid in all three heat exchangers of counter as well parallel flow conditions. Total quantity of working fluid is 12 liters, in which 6liters of fluid is used as cold fluid and the other half is used as hot fluid. As a result, overall heat transfer coefficient (U) has been increased with increase of mass flow rate. Highest overall heat transfer coefficient value observed as 1943w/m2-k at highest mass flow rate (within the considerations of this work) of 0.145 kg/s. The highest decrement in LMTD recorded for 0.0425 to 0.145 increase of mass flow rate is 49.32% in shell-and-tube heat exchanger of parallel flow arrangement. The highest effectiveness is observed for pipe in pipe counter flow heat exchanger case, which is 0.39 at a mass flow rate of 0.145kg/s.
Keywords: Pipe in Pipe Heat Exchanger, Shell-and-Tube Heat Exchanger, Combined Heat Exchanger, Parallel Flow, Counter Flow, Ethylene Glycol Mixture, Mass Flow Rate, LMTD, Overall Heat Transfer Coefficient (U), Effectiveness (ɛ).
Scope of the Article: Heat Transfer