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Journal articles on the topic 'Energy recovery · PATs'

Author: Grafiati

Published: 2 June 2025

Last updated: 31 July 2025

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1

Manservigi, Lucrezia, Mauro Venturini, Enzo Losi, and Giulia Anna Maria Castorino. "Optimal Selection and Operation of Pumps as Turbines for Maximizing Energy Recovery." Water 15, no. 23 (2023): 4123. http://dx.doi.org/10.3390/w15234123.

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A pump as turbine (PAT) can be a cost-effective and versatile solution to recover energy in several fields of application. However, its optimal exploitation requires a reliable and general methodology for selecting the optimal turbomachine. To this purpose, this paper presents and validates a comprehensive methodology that identifies the best turbomachine (i.e., the one that maximizes the recovered energy) by considering two hydraulic sites and forty-five PATs. In both sites, the methodology correctly identifies the best PAT, which allows for the recovery of up to 45% of the available hydrauli

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2

Viana, Ingrid Luna Baia, Jamile Caroline Moreira Batista, João Henrique Macedo Sá, et al. "Pressure regulation and energy recovery in water distribution networks using pumps as turbines." Revista Brasileira de Ciências Ambientais 58, no. 1 (2023): 103–13. http://dx.doi.org/10.5327/z2176-94781551.

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Water distribution networks (WDNs) are considered a potential renewable energy source, as they have more than enough pressure energy to deliver water to users. To control excessive pressure, WDNs are commonly divided into district metered areas (DMAs) with pressure-reducing valves (PRVs). The energy wasted by PRVs can be recovered using pumps as turbines (PATs). However, selecting the appropriate pump remains a challenge, as it must account for daily pressure and flow variations from consumers (off-design conditions). In this article, a combination of models was validated and applied to select

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Rodríguez-Pérez, Ángel Mariano, Cinta Pérez-Calañas, and Inmaculada Pulido-Calvo. "Energy Recovery in Pressurized Hydraulic Networks." Water Resources Management 35 (April 13, 2021): 1977–90. https://doi.org/10.1007/s11269-021-02824-4.

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<strong>El copyright de esta publicación pertenece al editor en exclusiva, no está permitido el acceso al texto completo</strong> <strong><em>The copyright of this publication belongs exclusively to the publisher, access to the full text is not allowed</em></strong> This paper aims to evaluate the possibility of using non-utilized hydraulic energy in urban water distribution systems. For this purpose, the viability and possible alternatives of installing conventional turbines or pumps working as turbines (PATs=Pumps as Turbines) at the head of pressure hydraulic networks in two t

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Patelis, Menelaos, Vasilis Kanakoudis, and Konstantinos Gonelas. "Pressure Management and Energy Recovery Capabilities Using PATs." Procedia Engineering 162 (2016): 503–10. http://dx.doi.org/10.1016/j.proeng.2016.11.094.

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Alberizzi, Jacopo Carlo, Massimiliano Renzi, Maurizio Righetti, Giuseppe Roberto Pisaturo, and Mosè Rossi. "Speed and Pressure Controls of Pumps-as-Turbines Installed in Branch of Water-Distribution Network Subjected to Highly Variable Flow Rates." Energies 12, no. 24 (2019): 4738. http://dx.doi.org/10.3390/en12244738.

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The use of Pumps-as-Turbines (PaTs) to replace hydraulic turbines as energy-recovery units in industrial and civil applications is widening the penetration of hydropower in small-scale plants. PaTs show advantages in terms of installation costs and the availability of solutions. Water Distribution Networks (WDNs) represent a potential application where PaTs can be installed to recover water-pressure energy. In this work, a MATLAB©–Simulink model of a WDN branch located in South-Tyrol (Italy) was developed. The flow rate of the WDN was assessed though a measurement campaign showing high daily v

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Pillay, Ethan, Muthukrishnavellaisamy Kumarasamy, Joy Adu, Saravana Prakash Thirumuruganandham, Ayesha Paruk, and Maranka Naidoo. "Feasibility Analysis of Energy Recovery Using PATs in Water Distribution Networks." Water 14, no. 7 (2022): 1150. http://dx.doi.org/10.3390/w14071150.

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Power generation is becoming an increasing problem in South Africa. South Africa produces approximately 90% of its electricity from coal-fired power stations and only 5% from hydroelectric power stations and pumped storage. Durban has a very steep topography, which results in high pressure in certain parts of the water distribution network (WDN). Leakage is costly and contributes to a large extent to non-revenue water (NRW) in the network. Pressure reducing valves (PRVs) are used in WDNs to control the pressure in the pipework to reduce leakage. This excess pressure can be used to generate ele

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Puleo, Valeria, Chiara Maria Fontanazza, Vincenza Notaro, Mauro De Marchis, Gabriele Freni, and Goffredo La Loggia. "Pumps as turbines (PATs) in water distribution networks affected by intermittent service." Journal of Hydroinformatics 16, no. 2 (2013): 259–71. http://dx.doi.org/10.2166/hydro.2013.200.

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A hydraulic model was developed in order to evaluate the potential energy recovery from the use of centrifugal pumps as turbines (PATs) in a water distribution network characterized by the presence of private tanks. The model integrates the Global Gradient Algorithm (GGA), with a pressure-driven model that permits a more realistic representation of the influence on the network behaviour of the private tanks filling and emptying. The model was applied to a real case study: a District Metered Area in Palermo (Italy). Three different scenarios were analysed and compared with a baseline scenario (

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Camilo Rosado, Luis, P. López-Jiménez, Francisco-Javier Sánchez-Romero, Pilar Conejos Fuertes, and Modesto Pérez-Sánchez. "Applied Strategy to Characterize the Energy Improvement Using PATs in a Water Supply System." Water 12, no. 6 (2020): 1818. http://dx.doi.org/10.3390/w12061818.

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Sustainable development has been an idea raised in recent years. The results are related to the improvement and the use of new technologies to maximize efficiency in water management. However, energy consumption has been increasing as a consequence of new management and uses of water. Especially in pressurized water distribution systems, the use of pressure reduction valves (PRVs) increases the water usage efficiency but it decreases the energy consumption efficiency, since the valves dissipate energy that could be recovered. This research presents a proposal of a recovery system based on the

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9

Bernabé, Mariana Akemi Ikegawa, Miguel Crespo Chacón, Juan Antonio Rodríguez Díaz, Pilar Montesinos, and Jorge García Morillo. "Comparing Strategies for Optimal Pumps as Turbines Selection in Pressurised Irrigation Networks Using Particle Swarm Optimisation: Application in Canal del Zújar Irrigation District, Spain." Technologies 13, no. 6 (2025): 233. https://doi.org/10.3390/technologies13060233.

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The modernisation of irrigation networks has enhanced water use efficiency but increased energy demand and costs in agriculture. Energy recovery (ER) is possible by utilising excess pressure to generate electricity with pumps as turbines (PATs), offering a cost-effective alternative to traditional turbines. This study assesses the use of PATs in pressurised irrigation networks for recovering wasted hydraulic energy, employing the particle swarm optimisation (PSO) algorithm for PAT sizing based on two single-objective functions. The analysis focuses on minimising the payback period (MPP) and ma

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Llácer-Iglesias, Rosa, Jose M. Pérez, Jose Ricardo Satorre-Aznar, P. Amparo López-Jiménez, and Modesto Pérez-Sánchez. "Energy recovery in wastewater treatment systems through hydraulic micro-machinery. Case study." Journal of Applied Research in Technology & Engineering 1, no. 1 (2020): 15. http://dx.doi.org/10.4995/jarte.2020.13766.

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<p class="JAREAbstract">The wastewater treatment plants (WWTP) treat the water from domestic and industrial use so that its discharge, once it passes through them, is harmless to the environment. However, large amounts of energy are necessary to carry out this process. Therefore, energy and process optimization are a key issue within these type of plant. One of the possibilities within the WWTPs is the recovery of hydraulic energy. This paper presents alternatives for the recovery of hydraulic energy, through the use of hydraulic micro-machinery such as PATs or hydrostatic pressure wheel

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Pineda Sandoval, Joseph Daniel, José Antonio Arciniega-Nevárez, Xitlali Delgado-Galván, et al. "Street Lighting and Charging Stations with PATs Location Applying Artificial Intelligence." Water 15, no. 4 (2023): 616. http://dx.doi.org/10.3390/w15040616.

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This research proposes a methodology with multi-objective optimization for the placement of Pumps operating As Turbines (PATs), energizing street lighting, devices for monitoring the water network, and charging stations for small electric vehicles such as bikes and scooters. This methodology helps to find the most profitable project for benefiting life quality and energy recovery through pumps operating as turbines, replacing virtual pressure reduction valves to locate the best point for decreasing pressure. PATs are selected by maximizing power recovery and minimizing pressure in the system a

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Pérez-Sánchez, Modesto, Francisco Javier Sánchez-Romero, Helena M. Ramos, and P. Amparo López-Jiménez. "Improved Planning of Energy Recovery in Water Systems Using a New Analytic Approach to PAT Performance Curves." Water 12, no. 2 (2020): 468. http://dx.doi.org/10.3390/w12020468.

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The use of pumps working as turbines (PATs) to improve the energy efficiency of water networks has been studied in the last years. This recovery system is justified due to a low investment contrasting with the capacity to take advantage in certain points with low and medium recoverable heads. Analyses of water systems using simulation software and/or optimization algorithms need the characteristic curves (head and efficiency) of the machines, which should be known with minor error by the water managers. The knowledge of the best efficiency point (BEP) as a turbine is one of the major limitatio

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De Marchis, Mauro, and Gabriele Freni. "Pump as turbine implementation in a dynamic numerical model: cost analysis for energy recovery in water distribution network." Journal of Hydroinformatics 17, no. 3 (2015): 347–60. http://dx.doi.org/10.2166/hydro.2015.018.

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In complex systems characterized by the presence of private tanks and water scarcity conditions, water managers usually apply intermittent distribution, trying to reduce the water volumes supplied to the users and pipe leakages, or use pressure reduction valves for controlling pressure in the network. The application of pumps as turbines (PATs) appears as an alternative and sustainable solution to either control network pressure or produce energy. In the present paper, the economic benefit of PAT application in water distribution networks was investigated in a small district of Palermo network

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14

Tricarico, Carla, Mark S. Morley, Rudy Gargano, et al. "Optimal energy recovery by means of pumps as turbines (PATs) for improved WDS management." Water Supply 18, no. 4 (2017): 1365–74. http://dx.doi.org/10.2166/ws.2017.202.

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Abstract In water networks characterized by a significant variation in ground elevations the necessity of pumping water in some areas is complicated by a conflicting requirement to reduce excess pressures in other areas. This and the increasing cost of electricity has led to the use of Pumps-operating-As-Turbines (PATs) devices that can reduce pressure (and leakage) whilst harvesting energy. This paper presents a methodology for optimal water distribution system (WDS) management, driving the optimization by minimizing the surplus pressure at network nodes and the operational pumping costs and

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15

Carravetta, A., O. Fecarotta, G. Del Giudice, and H. Ramos. "Energy Recovery in Water Systems by PATs: A Comparisons among the Different Installation Schemes." Procedia Engineering 70 (2014): 275–84. http://dx.doi.org/10.1016/j.proeng.2014.02.031.

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Crespo Chacón, Miguel, Juan Rodríguez Díaz, Jorge García Morillo, and Aonghus McNabola. "Pump-as-Turbine Selection Methodology for Energy Recovery in Irrigation Networks: Minimising the Payback Period." Water 11, no. 1 (2019): 149. http://dx.doi.org/10.3390/w11010149.

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In pressurized irrigation networks, energy reaches around 40% of the total water costs. Pump-as-Turbines (PATs) are a cost-effective technology for energy recovery, although they can present low efficiencies when operating outside of the best efficiency point (BEP). Flow fluctuations are very important in on-demand irrigation networks. This makes flow prediction and the selection of the optimal PAT more complex. In this research, an advanced statistical methodology was developed, which predicts the monthly flow fluctuations and the duration of each flow value. This was used to estimate the mon

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17

Ramos, Helena M., Mariana Simão, Aonghus McNabola, Daniele Novara, and Armando Carravetta. "Fostering Renewable Energies and Energy Efficiency in the Water Sector Using PATs and Wheels." Proceedings 2, no. 23 (2018): 1438. http://dx.doi.org/10.3390/proceedings2231438.

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REDAWN project will foster the adoption of hydropower energy recovery technology in built water networks in the Atlantic Area (AA). REDAWN will develop an adequate institutional, social and technological environment to foster greater resource efficiency in water networks. Pumps working as turbines (PAT) and other converters (wheels) became attractive to improve the water sector energy efficiency. However, the behavior of these devices are complex and it is difficult know its behavior. To overcome this problem, computational fluid dynamics (CFD) models were used in conjunction with the conceptu

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18

Carravetta, Armando, Giuseppe Del Giudice, Oreste Fecarotta, Maria Cristina Morani, and Helena M. Ramos. "A New Low-Cost Technology Based on Pump as Turbines for Energy Recovery in Peripheral Water Networks Branches." Water 14, no. 10 (2022): 1526. http://dx.doi.org/10.3390/w14101526.

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The recovery of excess energy in water supply networks has been a topic of paramount importance in recent literature. In pressurized systems, a pump used in inverse mode (Pump As Turbine, PAT) demonstrated to be a very economical and reliable solution, compared to traditional energy production devices (EPDs). Due to the large variability of flow rate and head drop within water distribution networks, the operation of PATs could be performed by a series-parallel regulation system based on an electronic or a hydraulic principle. Despite the low cost of the PATs and of regulation and control syste

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19

Morani, Maria, Armando Carravetta, Giuseppe Del Giudice, Aonghus McNabola, and Oreste Fecarotta. "A Comparison of Energy Recovery by PATs against Direct Variable Speed Pumping in Water Distribution Networks." Fluids 3, no. 2 (2018): 41. http://dx.doi.org/10.3390/fluids3020041.

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20

Balacco, Gabriella, Mario Binetti, Tommaso Capurso, Michele Stefanizzi, Marco Torresi, and Alberto Ferruccio Piccinni. "Pump as Turbine for the Energy Recovery in a Water Distribution Network: Two Italian (Apulian) Case Studies." Environmental Sciences Proceedings 2, no. 1 (2020): 1. http://dx.doi.org/10.3390/environsciproc2020002001.

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This paper expands on the results of the technical and economic feasibility analysis of substituting existing pressure reduction valves (PRVs) with pumps used as turbines (PaTs) in two real Italian water distribution networks (WDN), chosen as case studies, aiming at effective energy recovery. Water demand variability makes complex the selection of the right pump to be used as a turbine in a WDN maximizing its annual electric energy yield. Hence, this study describes an effective approach that permits us to identify the most suitable pumps, starting from the definition of the best efficiency po

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Novara, Daniele, and Aonghus McNabola. "The Development of a Decision Support Software for the Design of Micro-Hydropower Schemes Utilizing a Pump as Turbine." Proceedings 2, no. 11 (2018): 678. http://dx.doi.org/10.3390/proceedings2110678.

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Pumps As Turbines (PATs) are a class of unconventional hydraulic turbines consisting of standard water pumps working in reverse mode as the prime mover. Such devices can be well suited for either in-pipe energy recovery or small-scale hydropower, but their practical application is hampered by the lack of comprehensive guidelines able to assist the designer in the determination of the optimal plant layout and the choice of equipment. In fact, the performances of a PAT will depend on factors such as its construction type, its size and the flow conditions under which the machine is expected to op

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Renzi, Massimiliano, Pavel Rudolf, David Štefan, Alessandra Nigro, and Mosè Rossi. "Energy recovery in oil refineries through the installation of axial Pumps-as-Turbines (PaTs) in a wastewater sewer: a case study." Energy Procedia 158 (February 2019): 135–41. http://dx.doi.org/10.1016/j.egypro.2019.01.058.

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23

Spedaletti, Samuele, Mosè Rossi, Gabriele Comodi, Danilo Salvi, and Massimiliano Renzi. "Energy recovery in gravity adduction pipelines of a water supply system (WSS) for urban areas using Pumps-as-Turbines (PaTs)." Sustainable Energy Technologies and Assessments 45 (June 2021): 101040. http://dx.doi.org/10.1016/j.seta.2021.101040.

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Ramos, Helena M., Maria Cristina Morani, Francesco Pugliese, and Oreste Fecarotta. "Integrated Smart Management in WDN: Methodology and Application." Water 15, no. 6 (2023): 1217. http://dx.doi.org/10.3390/w15061217.

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Urbanization and population growth have been responsible for a significant increase in consumption of water and energy at a global scale. A careful management of water resource and infrastructures is crucial for Energy Transition, as well as for achieving a sustainable efficiency of these systems. High pressure values along with the ageing of the systems contribute to high leakage levels of Water Distribution Networks (WDN). The simultaneous control of excess pressure and containment of water losses are mainly performed by using Pressure Reducing Valves (PRVs) in WDN, which dissipate the surpl

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Filannino, Domenico, Michele Stefanizzi, Tommaso Capurso, Gabriella Balacco, Sergio M. Camporeale, and Marco Torresi. "Bypass Control strategy of a Pump as Turbine in a Water Distribution Network for energy recovery." Journal of Physics: Conference Series 2385, no. 1 (2022): 012123. http://dx.doi.org/10.1088/1742-6596/2385/1/012123.

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Abstract Water Distribution Networks (WDNs) are subject to leakages due to pipes aging, resulting in water and pressure losses. These issues are solved by installing Pressure Reduction Valves (PRVs) to decrease the pressure in WDNs. Depending on the application, PRVs can waste large amount of energy, hence the substitution of PRVs with Pumps used as Turbines (PaTs) can be a good compromise in terms of economic and technical aspects to reduce leakages and recover energy. Currently the share of PaT is not yet fully developed due to the certain technical challenges yet to be addressed, as providi

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Ávila, Carlos Andrés Macías, Francisco-Javier Sánchez-Romero, P. Amparo López-Jiménez, and Modesto Pérez-Sánchez. "Leakage Management and Pipe System Efficiency. Its Influence in the Improvement of the Efficiency Indexes." Water 13, no. 14 (2021): 1909. http://dx.doi.org/10.3390/w13141909.

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Water is one of the most valuable resources for humans. Worldwide, leakage levels in water distribution systems oscillate between 10% and 55%. This causes the need for constant repairs, economic losses, and risk to the health of users due to possible pathogenic intrusion. There are different methods for estimating the level of leakage in a network, depending on parameters such as service pressure, orifice size, age and pipe material. Sixty-two water distribution networks were analyzed to determine the leakage method used, the calibration method, and the percentage of existing leaks. Different

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27

Polák, Martin. "The Influence of Changing Hydropower Potential on Performance Parameters of Pumps in Turbine Mode." Energies 12, no. 11 (2019): 2103. http://dx.doi.org/10.3390/en12112103.

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Pumps as turbines (PAT) are used as an alternative to water turbines in small hydropower plants. The same devices can also be used for energy recovery in water distribution networks. They can replace pressure reduction valves that often lead to energy loss. However, PATs lack the parts that regulate flow so that when a hydropower potential change occurs, efficiency is reduced, as is economic gain. This article summarizes the influence of changing hydropower potential on PAT efficiency and presents comparisons of experimental results with the commonly used predictive model stemming from the the

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Sarbu, Ioan, Matei Mirza, and Daniel Muntean. "Integration of Renewable Energy Sources into Low-Temperature District Heating Systems: A Review." Energies 15, no. 18 (2022): 6523. http://dx.doi.org/10.3390/en15186523.

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This article presents a complex and exhaustive review of the integration of renewable energy sources (RES) (specifically solar, geothermal, and hydraulic energies and heat pumps (HPs)) and the improvement of water pumping in district heating systems (DHSs) focused on low-temperature systems, to increase energy efficiency and environmental protection. For this aim, the main components of a DHS and the primary RES with applications in DHSs were described briefly. Finally, several case studies regarding the DHS in Timisoara, Romania, were analysed. Thus, by integrating water source HP (WSHP) syst

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Bogdanović-Jovanović, Jasmina, Živojin Stamenković, Miloš Kocić, and Jelena Petrović. "Performance Prediction of Centrifugal Norm Pumps Operating as Turbines." Fluids 9, no. 8 (2024): 190. http://dx.doi.org/10.3390/fluids9080190.

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Pump-as-turbines (PAT) has been widely used during the last decade as one of the most interesting technologies in the field of energy recovery. Many studies and papers have been published in which the performance of the pumps in the turbine operating regime were analysed. Since horizontal single stage centrifugal norm pumps are most commonly used as PATs, their performances are analysed in this paper. Most of the research was related to individual pump aggregates or smaller groups and to obtaining their performance curves in turbine random mode. In this work, extensive experimental, numerical,

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Madeira, Filipe C., João F. P. Fernandes, Modesto Pérez-Sánchez, P. Amparo López-Jiménez, Helena M. Ramos, and P. J. Costa Branco. "Electro-Hydraulic Transient Regimes in Isolated Pumps Working as Turbines with Self-Excited Induction Generators." Energies 13, no. 17 (2020): 4521. http://dx.doi.org/10.3390/en13174521.

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The use of pumps working as turbines (PATs) is a sustainable technical measure that contributes to the improvement of energy efficiency in water systems. However, its performance analysis in off-grid recovery systems is a complex task that must consider both hydraulic (PAT) and electrical machines (typically a self-excited induction generator-SEIG). Aside from several kinds of research that analyze the PAT-SEIG behavior under steady-state constant hydraulic and electrical conditions, this research focuses on the analysis of PAT-SEIG transient regimes, by analyzing their variation when a sudden

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Al-Suhaibani, Zeyad, Syed Noman Danish, Ziyad Saleh Al-Khalaf, and Basharat Salim. "Improved Prediction Model and Utilization of Pump as Turbine for Excess Power Saving from Large Pumping System in Saudi Arabia." Sustainability 15, no. 2 (2023): 1014. http://dx.doi.org/10.3390/su15021014.

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The throttling process is frequently encountered in many industrial practices utilizing Pressure Reducing Valves (PRVs). This process is typically used to control pressure and flow in pipeline networks. The practice of utilizing PRVs is considered simple and cheap in terms of installation cost and control. It dissipates the excess fluid energy that can be used for other purposes. This paper studies the feasibility of utilizing the Pump as Turbine (PAT) concept to partially recover the excess power dissipated from PRVs located at the discharge lines of refined product shipping pumps at one of t

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Tien, Tan Nguyen, Quang Khong Vu, and Vinh Nguyen Duy. "Novel designs of thermoelectric generator for automotive waste heat recovery: A review." AIMS Energy 10, no. 4 (2022): 922–42. http://dx.doi.org/10.3934/energy.2022042.

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<abstract> <p>Many worldwide scientists have concentrated on using waste heat recovery technology in automotive applications because of increasingly strict fuel consumption. The thermoelectric generator (TEG) has garnered significant interest in the automobile sector as a viable waste heat recovery solution over the past several decades. A short survey of thermoelectric materials and heat exchangers for TEG systems is initially presented in this paper. To overcome the heat exchanger's current shortcomings, some previous studies designed a variety of the heat exchanger geometry of t

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CHANG, ROBERT C., PO-CHUNG HUNG, and HSIN-LEI LIN. "LOW POWER ENERGY RECOVERY COMPLEMENTARY PASS-TRANSISTOR LOGIC." Journal of Circuits, Systems and Computers 15, no. 04 (2006): 491–504. http://dx.doi.org/10.1142/s0218126606003271.

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A proposed adiabatic logic called Energy Recovery Complementary Pass-transistor Logic (ERCPL) is presented in this paper. It operates with a two-phase nonoverlapping power-clock supply. It uses bootstrapping to achieve efficient power saving and eliminates any nonadiabatic losses on the charge-steering devices. A scheme is used to recover part of the energy trapped in the bootstrapping nodes. We compare the energy dissipation between ERCPL and other logic circuits by simulation. Simulation results show that a pipelined ERCPL carry look-ahead adder can achieve a power reduction of 80% over the

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Baumann, G. F., J. E. Myers, and W. J. Farrissey. "Energy Recovery From Automotive Rim Parts." Journal of Cellular Plastics 27, no. 1 (1991): 50–51. http://dx.doi.org/10.1177/0021955x9102700160.

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Gökelma, Mertol, Utku Hatipoğlu, Alicia Vallejo-Olivares, et al. "Effects of Size and Mechanical Pre-Treatment on Aluminium Recovery from Municipal Solid Waste Incineration Bottom Ash." Minerals 14, no. 10 (2024): 1006. http://dx.doi.org/10.3390/min14101006.

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Municipal solid waste (MSW) is incinerated to reduce the volume and recover energy and materials. The generation of MSW has been increasing over the past few decades due to the increase in population and changing consumption habits. Rising environmental and economic concerns have increased the importance of waste treatment and recovery. Currently, MSW may take three alternate or parallel routes: direct recycling, incineration, or landfill, depending on the country and location. MSW incineration has three products in addition to energy: bottom ash, fly ash, and off-gas. After incineration, bott

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bin Mamat, Aman M. I., and Wan Ahmad Najmi Wan Mohamed. "Thermal Analysis of Heat Recovery Unit to Recover Exhaust Energy for Using in Organic Rankine Cycle." Applied Mechanics and Materials 393 (September 2013): 781–86. http://dx.doi.org/10.4028/www.scientific.net/amm.393.781.

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Heat engines convert only approximately 20% to 50% of the supplied energy into mechanical work whereas the remaining energy is lost as rejected heat. Although some of the energy lost is intrinsic to the nature of an engine and cannot be fully overcome (such as energy lost due to friction of moving parts), a large amount of energy can potentially be recovered. This paper presents a heat transfer analysis of a WHE for recovering wasted exhaust energy whilst transferring energy to different organic working fluid used in the OrganicRankine Cycle. The types of considered fluids are R-134a, Propane

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Monga, Deepak, Gagan Baradia, Siddharth Nangia, and Rohit Mishra. "Energy Harvesting System Using Thermoelectric Generators and Heat Pipes: A Review." International Journal of Advance Research and Innovation 5, no. 2 (2017): 176–86. http://dx.doi.org/10.51976/ijari.521731.

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Environmental Protection issues and the global energy crisis worldwide have caused energy recovery techniques to come into play. One of the potential areas for this energy recovery is engine exhaust as huge amount of energy is lost in form of heat through exhaust gases. With appropriate recovery methods executed, considerable increase in efficiency of engine is obtained. For this aim, thermoelectric generators is proposed as the optimum solution as its solid state working doesn’t have any moving parts or gas emissions and directly converts exhaust heat into electricity. Another promising techn

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Stover, Richard L., and Bill Andrews. "Isobaric Energy-Recovery Devices: Past, Present, and Future." IDA Journal of Desalination and Water Reuse 4, no. 1 (2012): 38–43. http://dx.doi.org/10.1179/ida.2012.4.1.38.

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Borowski, Marek, Marek Jaszczur, Daniel Satoła, Sławosz Kleszcz, and Michał Karch. "An analysis of the innovative exhaust air energy recovery heat exchanger." MATEC Web of Conferences 240 (2018): 02003. http://dx.doi.org/10.1051/matecconf/201824002003.

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Heating, ventilation and air conditioning systems are responsible for a nearly 50% of total energy consumption in operated buildings. One of the most important parts of the ventilation system is an air handling unit with a heat exchanger for energy recovery which is responsible for effective and efficient energy recovery from exhaust air. Typically heat exchangers are characterised by the producers by heat and humidity recovery efficiency up to 90% and 75% respectively. But these very high values are usually evaluated under laboratory conditions without taking into account a dynamic change of

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Kikuchi, Ryunosuke. "CO2 Recovery and Reuse in the Energy Sector, Energy Resource Development and Others: Economic and Technical Evaluation of Large-Scale Co2 Recycling." Energy & Environment 14, no. 4 (2003): 383–95. http://dx.doi.org/10.1260/095830503322364403.

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Climate change caused by greenhouse gases is receiving worldwide attention. CO2 (carbon dioxide) emission accounts for 80% of greenhouse gas emissions. The current measures against emission of CO2 are mainly control of emissions, sequestration and fixation, but CO2 emission decreased by only 1.6% in Europe during the past decade. CO2 recovery and reuse may offer new options for the greenhouse gas strategy. CO2 recovery technology such as the amine process is economically and technically feasible for industrial-scale application, and the recovered CO2 can be utilized for energy production, deve

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Deepak, B. B. V. L., G. Bala Murali, and Sandeep Kumar Pandey. "Energy Efficient Disassembly Sequence Generation Using Subassembly Detection Method with Environmental and Economic Parts Selection." Journal of Advanced Manufacturing Systems 17, no. 03 (2018): 353–73. http://dx.doi.org/10.1142/s021968671850021x.

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Supply chains have been more serious for environmental issues for not only the reduction of CO2 emission but also for material starvation. To enhance a closed loop supply chain for assembled product, a disassembly system is required. At end-of-life, the assembly products at recycling organization should be disassembled environmentally and economically for not only low carbonization but also of material circulation. This recycling and reusing of product enables to reduce CO2 release because the virgin materials which release CO2 volumes caused by production and logistics can be saved by the usa

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Kim, Chul Ho, Won Hee Kang, Min Kyeong Park, Kwang Ho Lee, and Kang Soo Kim. "Energy Saving Optimal Operation Strategy for By-pass Control by Various Types of Energy Recovery Ventilator." Korean Journal of Air-Conditioning and Refrigeration Engineering 32, no. 7 (2020): 309–22. http://dx.doi.org/10.6110/kjacr.2020.32.7.309.

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Ismail, Meor Mohd Rizal, Jazair Yahya Wira, Aminuddin Abu, and Mohd Azman Zainul Abidin. "Thermal Energy Harvesting From Automotive Waste Heat." Advanced Materials Research 516-517 (May 2012): 498–503. http://dx.doi.org/10.4028/www.scientific.net/amr.516-517.498.

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The objective of this study was to determine the best method for waste thermal energy recovery from internal combustion engine (ICE). There are several technologies that can be used to accomplish this objective such as turbocharger, combined turbines, Stirling engine, Seebeck effect and Rankine cycle. Two elements that need to be taken into consideration in order to choose the best technology for waste heat recovery system are the complexity of the system and the method to utilize waste heat energy from engine. After a reviewing some of past research work, it was determined that Rankine cycle

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Łokietek, Tomasz, Wojciech Tuchowski, Dorota Leciej-Pirczewska, and Anna Głowacka. "Heat Recovery from a Wastewater Treatment Process—Case Study." Energies 16, no. 1 (2022): 44. http://dx.doi.org/10.3390/en16010044.

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This article presents the potential of heat recovery from wastewater with an example of a wastewater treatment plant (WWTP) in Mokrawica, which is located in the West Pomeranian region of Poland. A thorough literature review discusses the relevance of the topic and shows examples of heat recovery conducted with heat pumps. Raw and treated wastewater are mostly used as heat sources, with the latter achieving higher thermal capacities. Heat recovery from a biological treatment process is rarely implemented and requires more detailed studies on this subject. The proposed methodology for estimatin

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Aksu, Umut, and Recep Halicioglu. "A review study on energy harvesting systems for vehicles." Tehnički glasnik 12, no. 4 (2018): 251–59. http://dx.doi.org/10.31803/tg-20180210153816.

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The widespread and increasing consumption of fossil-based fuels as an energy source causes a rapid decrease of these natural sources, as well as an increase of pollution in the atmosphere. Fuel oil, one of the products of fossil fuels, is today the commonly used energy source for transportation. The importance of contributing to the fuel economy and of increasing environmental consciousness have necessitated certain measures in the automotive sector, as well as in other industrial sectors. Therefore, the technological developments recently carried out in the automotive sector aim to reduce the

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Hassan, U., M. B. Adamu, I. Bukar, and M. A. Muhammad. "Application of Augmented Water Flooding Using Ultrasound Energy to Improve Oil Recovery." European Journal of Engineering and Technology Research 6, no. 2 (2021): 1–5. http://dx.doi.org/10.24018/ejers.2021.6.2.2334.

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The application of ultrasound energy in improving oil recovery is an emerging technique, it has been tested in laboratories and some field applications in different parts of the world. In this study, Nigerian crude oil of 4.21 cSt viscosity and sandstone rock samples were tested using a designed and constructed experimental rig. The rig is an analogue of a standard core flooding set up and works on the principle of fluid flow in porous media. Furthermore, a modeled equation was developed to better understand the effects of power and time on the volume of oil recovered at a constant ultrasound

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47

Hassan, U., M. B. Adamu, I. Bukar, and M. A. Muhammad. "Application of Augmented Water Flooding Using Ultrasound Energy to Improve Oil Recovery." European Journal of Engineering and Technology Research 6, no. 2 (2021): 1–5. http://dx.doi.org/10.24018/ejeng.2021.6.2.2334.

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The application of ultrasound energy in improving oil recovery is an emerging technique, it has been tested in laboratories and some field applications in different parts of the world. In this study, Nigerian crude oil of 4.21 cSt viscosity and sandstone rock samples were tested using a designed and constructed experimental rig. The rig is an analogue of a standard core flooding set up and works on the principle of fluid flow in porous media. Furthermore, a modeled equation was developed to better understand the effects of power and time on the volume of oil recovered at a constant ultrasound

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Kisser, Johannes, Maria Wirth, Bart De Gusseme, et al. "A review of nature-based solutions for resource recovery in cities." Blue-Green Systems 2, no. 1 (2020): 138–72. http://dx.doi.org/10.2166/bgs.2020.930.

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Abstract Our modern cities are resource sinks designed on the current linear economic model which recovers very little of the original input. As the current model is not sustainable, a viable solution is to recover and reuse parts of the input. In this context, resource recovery using nature-based solutions (NBS) is gaining popularity worldwide. In this specific review, we focus on NBS as technologies that bring nature into cities and those that are derived from nature, using (micro)organisms as principal agents, provided they enable resource recovery. The findings presented in this work are b

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Kisser, Johannes, Maria Wirth, Gusseme Bart De, et al. "A review of nature-based solutions for resource recovery in cities." Blue-Green Systems 2, no. 1 (2020): 138–72. https://doi.org/10.2166/bgs.2020.930.

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Abstract:

Our modern cities are resource sinks designed on the current linear economic model which recovers very little of the original input. As the current model is not sustainable, a viable solution is to recover and reuse parts of the input. In this context, resource recovery using nature-based solutions (NBS) is gaining popularity worldwide. In this specific review, we focus on NBS as technologies that bring nature into cities and those that are derived from nature, using (micro)organisms as principal agents, provided they enable resource recovery. The findings presented in this work are based on a

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Chang, R. C., P. C. Hung, and I. H. Wang. "Complementary pass-transistor energy recovery logic for low-power applications." IEE Proceedings - Computers and Digital Techniques 149, no. 4 (2002): 146. http://dx.doi.org/10.1049/ip-cdt:20020447.

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