Article
Physics, Applied
Ruchika Dhawan, Hari Prasad Panthi, Orlando Lazaro, Andres Blanco, Hal Edwards, Mark Lee
Summary: Thermoelectric generators and coolers offer a potential solution for energy autonomy in internet-of-things and biomedical electronics, as well as local cooling for high-performance integrated circuits. Advancing thermoelectric technology requires research on thermoelectric materials and device physics, particularly in determining thermopower and Peltier coefficients at the device level instead of the material level.
APPLIED PHYSICS LETTERS
(2022)
Article
Thermodynamics
Ratnak Sok, Jin Kusaka
Summary: Integrated thermoelectric generators (TEGs) and heat exchangers (HEX) are important for converting heat into electrical power. This study develops a 1D TEG model using the model-based development (MBD) method and focuses on the heat transfer coefficient alpha, pressure drop AP, and component temperatures that affect the electrical power from thermoelectric modules (TEM). Two methods are used to develop the model, with Method 2 achieving good performance without model tuning. The fast-predictive TEG model can be used for TEG redesign and integrated into vehicle-level simulations.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2023)
Article
Green & Sustainable Science & Technology
Dhruv Raj Karana, Rashmi Rekha Sahoo
Summary: By studying the performance of the exhaust heat exchanger, using a system with twisted ribs can produce more net power than a smooth surface system, and has the potential to improve fuel consumption by 0.65%.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Multidisciplinary Sciences
Keerati Maneesai, Sunisar Khammahong, Pongsakorn Siripoom, Chaiwat Phrompet, Chaval Sriwong, Santi Maensiri, Chesta Ruttanapun
Summary: In order to improve the efficiency of a thermoelectric device, the effect of heat loss reduction and thermal interface resistance were investigated. A thermoelectric concrete brick was fabricated and tested, showing higher temperature difference and output voltage compared to a single-layer brick and a CaMnO3 module without a thermal concrete insulator.
SCIENTIFIC REPORTS
(2023)
Article
Thermodynamics
Wannarat Rakpakdee, Suphakorn Tuntarungsri, Mongkol Pornnattawut, Masaaki Motozawa, Mitsuhiro Fukuta, Weerachai Chaiworapuek
Summary: By altering the configuration of the inlet flow channel, the heat transfer and pressure drop of water flow in double vertical coils and a shell heat exchanger were investigated under 28 kHz ultrasound. The position of activated ultrasonic transducers at P1-P9 was examined for its effects. The results showed that modifying the inlet flow configuration from two to four channels enhanced the Nusselt number by 11.6% on the shell side and increased the heat transfer capability by approximately 9% with ultrasonic irradiation.
APPLIED THERMAL ENGINEERING
(2023)
Article
Thermodynamics
Saeed Vahidifar, Seyedhadi Banihashemi
Summary: Researchers have conducted numerous studies on active and passive methods to improve thermal performance and increase heat transfer in internal flows. Different geometries and configurations of turbulators have been proposed for optimal performance in heat exchangers. However, there is limited research on turbulators with equal obstruction inside the tube and aerodynamic geometry. This study investigates the effect of stimulating the boundary layer of the internal flow on heat transfer and flow characteristics, using a pipe with ring-shaped turbulators and equal blocking area.
INTERNATIONAL JOURNAL OF THERMAL SCIENCES
(2023)
Article
Materials Science, Multidisciplinary
A. Sultana, A. Wurger, J. Phopase, X. Crispin, D. Zhao
Summary: Ionic thermoelectric materials can generate high thermal voltage under small temperature differences due to their large Seebeck coefficient. Understanding the mechanism of the Seebeck coefficient in practical electrolytes is still a main challenge.
JOURNAL OF MATERIALS CHEMISTRY C
(2022)
Article
Engineering, Chemical
Carolina Borges de Carvalho, Esdras Penedo de Carvalho, Mauro Antonio da Silva Sa Ravagnani
Summary: This article investigates the impact of different fouling mechanisms on heat transfer and operating costs in heat exchanger networks, and proposes a model to optimize the mass flow rates in the network to minimize the total annual cost.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2022)
Article
Thermodynamics
Nianqi Li, Jiri Jaromir Klemes, Bengt Sunden, Qiuwang Wang, Min Zeng
Summary: Heat exchanger network synthesis is an effective tool for heat recovery in chemical and petrochemical industries. This study proposes a method for HENS considering different shell-side flow arrangements in shell-and-tube heat exchangers. The proposed model aims to minimize the total annual cost by trade-offs between different shell-side heat exchangers, utility cost, and pumping cost. Case studies show that the proposed method with different shell-side baffles can reduce heat transfer area and pressure drop.
Article
Energy & Fuels
Hesham Khalil, Takushi Saito, Hamdy Hassan
Summary: This article presents a comparative experimental study of three different cooling systems used with thermoelectric generators mounted on a chimney for waste heat recovery. The results show that liquid cooling systems are a better option compared to the heat pipes' system, especially when considering the required surface area.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Thermodynamics
Ahmed Yousef, Rachid Saim, Hakan F. F. Oztop
Summary: This paper compares the thermal-hydraulic performance of three types of baffles in heat exchangers through numerical simulations. It is found that the perforated baffles have low shell pressure and high heat transfer performance, while the transverse baffles have the best heat transfer performance but require more pumping power. Overall, the perforated baffles show the best performance, while the transverse baffles perform the worst.
INTERNATIONAL JOURNAL OF NUMERICAL METHODS FOR HEAT & FLUID FLOW
(2023)
Article
Thermodynamics
Bowen Wang, Hongwu Deng, Liang Li, Hua Li
Summary: A smart heat exchanger based on shape memory alloy is developed in this study, which can vary its heat transfer capacity automatically. The smart heat exchanger has two typical working modes, low flow resistance mode and high-performance mode. The flow and heat transfer characteristics of the smart heat exchanger are studied by experiments and numerical simulations, and the results show significant energy-saving and enhanced heat transfer capacity.
APPLIED THERMAL ENGINEERING
(2023)
Article
Thermodynamics
Rajendran Prabakaran, Mohammad Salman, Poongavanam Ganesh Kumar, Dongchan Lee, Sung Chul Kim
Summary: This study investigated the evaporation heat transfer coefficient and two-phase frictional pressure drop of R1234yf in a brazed plate heat exchanger with offset strip fins. The results showed that the evaporation heat transfer coefficient was significantly influenced by the mass flux and vapor quality, while the two-phase frictional pressure drop increased with the mass flux, vapor quality, and heat flux, but decreased with the saturation temperature. New correlations were proposed for forecasting the Nusselt number and friction factor of R1234yf with reasonable accuracy.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2022)
Article
Thermodynamics
Jin Woo Yoo, Chan Woo Nam, Seok Ho Yoon
Summary: In this study, the propane condensation heat transfer and pressure drop performance of a printed circuit heat exchanger was experimentally investigated, and a heat transfer correlation similar to existing correlations was proposed. The best performing pressure drop correlation was also determined.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2022)
Article
Thermodynamics
Abbas J. S. Al-Lami, Eugeny Y. Kenig
Summary: The paper introduces an innovative heat exchanger design called internally channeled tube (ICT), which has a larger heat transfer area compared to conventional heat exchangers. A three-dimensional numerical model is developed to study the fluid dynamics and heat transfer in the ICT. The focus of the paper is on the experimental investigation of the ICT under turbulent flow conditions, including the maldistribution issue. The experimental results are used to validate the numerical model, with deviations below 6.5% for pressure drop and below 13% for heat transfer coefficient.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2023)
Review
Thermodynamics
Laxmikant D. Jathar, S. Ganesan, Kiran Shahapurkar, Manzoore Elahi M. Soudagar, M. A. Mujtaba, Ali E. Anqi, Muhammad Farooq, Abdulqhadar Khidmatgar, Marjan Goodarzi, Mohammad Reza Safaei
Summary: The research shows that the performance of solar stills is greatly influenced by climatic, design, and operational parameters, and the optimal productivity output depends on a combination of factors such as solar radiation intensity, still type, and temperature.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2022)
Article
Engineering, Chemical
L. Ranganatha Swamy, N. R. Banapurmath, T. K. Chandrashekar, Manzoore Elahi M. Soudagar, M. Gul, Nik-Nazri Nik-Ghazali, M. A. Mujtaba, Kiran Shahapurkar, Umit Agbulut, Hashim M. Alshehri, A. M. Sajjan, Marjan Goodarzi
Summary: The use of oxygenated fuels as a substitute for diesel fuel in engines can effectively reduce emissions, but it also leads to increased NOx emissions, inferior HC and CO emissions, and shortened ignition delay and combustion duration.
CHEMICAL ENGINEERING COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Vahid Rabiei Faradonbeh, Saeed Rabiei, Hamid Rabiei, Marjan Goodarzi, Mohammad Reza Safaei, Cheng-Xian Lin
Summary: This study numerically investigates the mixing efficiency of non-Newtonian fluid flow using surface acoustic waves. The results show that the input velocity and power-law index significantly affect the mixing efficiency, and shear-thickening fluids experience a higher rate of increase in mixing efficiency under the pressure of acoustic field.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Energy & Fuels
Marjan Goodarzi, Mohamed Abdelghany Elkotb, Abdullah K. Alanazi, Hala M. Abo-Dief, Ibrahim B. Mansir, Vineet Tirth, Fehmi Gamaoun
Summary: By utilizing Bayesian inference, this study provided accurate models for predicting the melting characteristics in PCM spherical heat storage units. Evaluation of the models' statistical performance showed that model #4 performed the best in predicting the melting rate, while model #5 excelled in predicting the surface-averaged Nusselt number.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Energy & Fuels
Raad Z. Homod, Hussein Togun, Ahmed Kadhim Hussein, Fadhel Noraldeen Al-Mousawi, Zaher Mundher Yaseen, Wael Al-Kouz, Haider J. Abd, Omer A. Alawi, Marjan Goodarzi, Omar A. Hussein
Summary: This study explores the use of reinforcement learning to optimize the energy efficiency and thermal comfort of HVAC systems. The authors propose a hybrid deep clustering multi-agent reinforcement learning approach that can better handle the challenges of large-scale nonlinearity and action space expansion, achieving significant performance improvements in energy savings and thermal comfort compared to PID control.
Article
Biotechnology & Applied Microbiology
Seifollah Gholampour, Bakhtiar Yamini, Julie Droessler, David Frim
Summary: This study proposes the concept of long-term ICC and investigates its variations in hydrocephalus patients. The results demonstrate that it takes approximately two months for brain tissue to adapt to the ICP reduction caused by shunting. The long-term ICC shows oscillatory changes, suggesting clinical variations in hydrocephalus patients after shunting.
FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY
(2022)
Article
Green & Sustainable Science & Technology
Wasim Jamshed, Abdullah K. Alanazi, Siti Suzilliana Putri Mohamed Isa, Ramashis Banerjee, Mohamed R. Eid, Kottakkaran Sooppy Nisar, Hashem Alshahrei, Marjan Goodarzi
Summary: This article investigates the working function and performance of parabolic trough solar collector (PTSC) in solar aircraft wings. By analyzing the heat transfer in a tangent hyperbolic hybrid nanofluid (THHNF), which contains Copper (Cu) and Silica (SiO2) nanoparticles in viscous fluid, it is found that the hybrid nanofluid exhibits better performance in heat transmission compared to conventional nanofluid.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2022)
Article
Computer Science, Interdisciplinary Applications
Seifollah Gholampour, Hemalatha Balasundaram, Padmavathi Thiyagarajan, Julie Droessler, Bakhtiar Yamini
Summary: This study proposes a mathematical framework based on in vivo inputs to compare the dynamic interaction of pulsatile blood, brain, and cerebrospinal fluid (CSF) between healthy individuals and hydrocephalus patients, shedding light on less-known aspects of intracranial fluid dynamics and the hydrocephalus mechanism.
COMPUTER METHODS AND PROGRAMS IN BIOMEDICINE
(2023)
Article
Green & Sustainable Science & Technology
Raad Z. Homod, Hussein Togun, Adnan A. Ateeq, Fadhel Noraldeen Al-Mousawi, Zaher Mundher Yaseen, Wael Al-Kouz, Ahmed Kadhim Hussein, Omer A. Alawi, Marjan Goodarzi, Goodarz Ahmadi
Summary: This study proposes a hybrid layer structure model to overcome the challenges in modeling the performance of cooling coils. The model combines two optimization methods and shows good control performance in saving energy and cost for HVAC systems. It is suitable for estimating energy and cost savings, and can evaluate the response of different output flows when changing independent variables.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2022)
Article
Green & Sustainable Science & Technology
Mashhour A. Alazwari, Masood Ashraf Ali, Mohammed Algarni, Eman Alzahrani, Mouna Jeridi, Marjan Goodarzi
Summary: In this study, the problem of 2-D heat transfer on a long cylindrical vessel made of functionally graded material (FGM) was investigated using an analytical method. The obtained analytical solution shows the flexibility of temperature distribution by using functionally graded material.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2022)
Article
Chemistry, Multidisciplinary
Sara Sadat Hosseini, Bakhtiar Yamini, Levan Ichkitidze, Majid Asadi, Julie Fernandez, Seifollah Gholampour
Summary: The aim of this study is to use enhanced ionic polymer-metal composites (IPMC) as an artificial muscle to restore eyelid movement in patients with ptosis. Finite element analysis was used to find the optimal mechanism among two different models and bovine serum albumin and microcrystalline cellulose polymers were utilized as non-metallic electrodes. The use of IPMC with nanocomposite electrodes was found to be more efficient than metallic electrodes, with the IPMC in model B being the most effective option.
Article
Biology
Seifollah Gholampour, David Frim, Bakhtiar Yamini
Summary: Data from hydrocephalus patients and simulated data have provided insights into the mechanisms of long-term brain recovery after shunt surgery. The recovery behavior of brain tissue after shunting may contribute to the unpredictable complexities in hydrocephalus shunt outcomes. The study also highlights the role of stiffness and viscous component in the recovery process.
COMMUNICATIONS BIOLOGY
(2022)
Review
Clinical Neurology
Seifollah Gholampour, Jay Patel, Bakhtiar Yamini, David Frim
Summary: Despite advances in cerebrospinal fluid shunting technology, complications remain a significant concern. This study aimed to compare the efficiency of shunts using different catheter entry sites. The results showed variations in shunt failure rates among the different entry sites.
NEUROSURGICAL REVIEW
(2022)
Article
Clinical Neurology
Seifollah Gholampour, Julie Droessler, David Frim
Summary: The control of thermal and physical damage during skull base grinding is critical. Various factors, including bur material, angle, diameter, gas coolant, and grinding time, were analyzed for their effects on thermal and physical damage. The use of a diamond bur and internal CO2 coolant proved to be effective in reducing damage. Optimal bur diameter and angle were also identified to minimize thermal damage.
NEUROSURGICAL REVIEW
(2022)
Article
Thermodynamics
Somayeh Davoodabadi Farahani, Mahdi Alibeigi, Amir Zakinia, Marjan Goodarzi
Summary: This numerical study examines the impact of microchannels, porous medium, and nanofluid on the cooling efficiency of a solar concentrator photovoltaic system. The results show that using microchannels can significantly reduce the temperature of solar cells and improve the electrical efficiency of the CPV system. Additionally, the porous layer plays a crucial role in enhancing thermal conductivity and improving the performance of the PV system.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2022)
