A Technical Evaluation of Performance Characteristics for Pump as Turbine Application

Mdee, Ombeni John; Kimambo, C. Z. M.; Nielsen, Torbjørn Kristian; Kihedu, Joseph

doi:10.1007/978-3-030-18488-9_23

Cited by 3 publications

(4 citation statements)

References 32 publications

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“…The technical characteristics and performance, environmental and economic merits of MHP systems are out of the scope of this research, as this has been extensively covered in previous work (e.g., [42,[59][60][61]); the less resolved aspects are the social externalities. The impact of the growth of the RE sector is evaluated in the following three dimensions: socioeconomic impacts, including wealth and job creation; environmental impacts, including avoided CO 2 emissions; and the reduction of energy dependence.…”

Section: Methodsmentioning

confidence: 99%

Socio-Technical Viability Framework for Micro Hydropower in Group Water-Energy Schemes

et al. 2021

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Most renewable energy (RE) studies focus on technology readiness, environmental benefits and/or cost savings. The market permeation, viability and adoption of RE technologies such as micro hydropower (MHP), however, require the alignment of other interrelated factors, such as the socio-technical, institutional and political dimensions. This is particularly the case where the energy recovery potential in decentralised water networks is being explored as part of a wholesome sustainability strategy by and for individual and communal prosumers. This study employs a socio-technical approach to understand factors that influence the perceived viability and adoption of MHP in group water-energy schemes. Methods included a progressive literature review to formulate a conceptual framework for the implementation of MHP systems. The framework was validated using survey data from representative stakeholders from groups schemes in Ireland and Spain. These stakeholders were sampled and surveyed at the stage of considering the adoption of MHP in their water networks. The findings highlight the push–pull factors and discusses the opportunities and barriers to the adoption of MHP systems. It confirms that the market, institutional and policy context, cost and financial benefits, social support and collaborative services combine to influence the adoption of MHP technology. Thus, a framework for evaluating the socio-technical viability of MHP systems based on these more realistic integrated, multi-dimensional criteria is proposed.

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Section: Methodsmentioning

confidence: 99%

Socio-Technical Viability Framework for Micro Hydropower in Group Water-Energy Schemes

et al. 2021

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“…Moreover, the modification of pump components would increase efficiency by 10.6%. 23 Using pipelines to transmit oil products from fields to refineries and distributable depots for the consumption of refineries and other industrial organs, a specified pressure differential inside the pipes needs to be created to overcome the available losses. These losses are created by natural impediments, including mountains, and pressure losses in the several hundred kilometers of routes.…”

Section: Introductionmentioning

confidence: 99%

“…However, a PAT has lower efficiency and specific speed. Moreover, the modification of pump components would increase efficiency by 10.6% 23 . Using pipelines to transmit oil products from fields to refineries and distributable depots for the consumption of refineries and other industrial organs, a specified pressure differential inside the pipes needs to be created to overcome the available losses.…”

Section: Introductionmentioning

confidence: 99%

An experimental and numerical investigation into using hydropower plant on oil transmission lines

Ansari

Aligholami

Khosroshahi

2022

Energy Science & Engineering

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Replacing control valves in the inlet lines of oil transmission stations with hydropower plants can be a logical solution to convert energy losses into useful power. In this regard, this paper carried out an experimental and numerical investigation to study the feasibility of applying a pump as turbine in a hydropower system and its performance on the oil transmission lines. An experimental platform, comprising a tank, hydropower, centrifugal pump, electromotor, and measuring instruments, was constructed. An external gear pump was employed regarding the high working pressure of the system, maximally 80 bar, as an actuator of the centrifugal pump. By comparing the efficiency of the electropump with the hydropower-driven pump, it was observed that maximum efficiency, approximately 20.6%, occurred when the pump reached its best efficiency point. Furthermore, based on experiments on hydropower-driven pump under different inlet pressures, an optimal point was observed for the system. This issue enhanced the system's efficiency by 19% as the flow rate increased by 1.9 L/s in the inlet pressure of 80 bar. According to the results, as the flow rate increases, there is a descending trend in outlet pressure. Besides this, there is an optimum condition for the maximum efficiency of hydropower plants and this crucial point should be determined by experimental or numerical studies to reach maximum performance. Furthermore, extracted values of power from the computational fluid dynamics model were compared with the experiments with less than 8% error in most cases. Therefore, a correlation was introduced for the prediction of power based on effective parameters of outlet pressure and volumetric flow rate for the off-design condition in each inlet pressure with roughly 2% error.

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“…Once, the operational curves were known, the researchers studied the analysis of theoretical recovered energy considering a constant flow. To increase energy generation, they proposed different regulation strategies when the flow change over time (Mdee et al, 2020). Some of these proposals included methodologies to optimize the location of the machine inside of the WDNs (Reca et al, 2008;Samora et al, 2016;.…”

Section: Introductionmentioning

confidence: 99%

Water-energy nexus management strategy towards sustainable mobility goal in smart cities

Ramos

Giralt

Jiménez

et al. 2021

Urban Water Journal

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All the authors have participated in different steps of this research. Particularly a brief description is attached: Helena M. Ramos supervised the whole research and was mentor of the idea. Helena M. Ramos and Modesto Pérez-Sánchez wrote the introduction and the definition of the methodology. Modesto Pérez-Sánchez and Lluis Giralt developed the model and simulations. P. Amparo López-Jiménez has revised this research. Water-energy nexus management strategy towards sustainable mobility goal in smart cities. Water distribution networks have high values of energy consumption from the source to the distribution. The use of pumps working as turbines to leverage the energy excess in consumption nodes is an innovative technology. The research proposes a new methodology, which couples the energy generation from water systems with other energy-consumption systems. The main goal is the development of energy communities, which will be self-sufficient to unify the solution with the mobility park charging systems. The optimization process is applied to an urban irrigation system in Lisbon to optimize the energy recovery from the network with PATs.This generated energy is used to cover the demand for two electric bikes' charging in Lisbon. This research contributes to both renewable energy and green mobility, creating a more sustainable and urban smart environment.An economic, environmental and social assessment is carried out evaluating the feasibility in global environmental terms.

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A Technical Evaluation of Performance Characteristics for Pump as Turbine Application

Cited by 3 publications

References 32 publications

Socio-Technical Viability Framework for Micro Hydropower in Group Water-Energy Schemes

Socio-Technical Viability Framework for Micro Hydropower in Group Water-Energy Schemes

An experimental and numerical investigation into using hydropower plant on oil transmission lines

Water-energy nexus management strategy towards sustainable mobility goal in smart cities

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