Key performance indicators (KPIs): Assessing the process integration of a shell-and-tube latent heat storage unit

Osman, Mohamed; Abokersh, Mohamed Hany; El-Baz, Omnia; Sharaf, Osama; Mahmoud, Nabil A.; El-Morsi, Mohamed

doi:10.1016/j.jclepro.2020.120249

Cited by 13 publications

(3 citation statements)

References 43 publications

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“…M. Osman et al [13] experimentally studied the capability of a multitube HX filled with a paraffin wax (Alex PW600) to serve as a heat storage store in solar domestic hot water heating systems. They recommend that according to the application and the available HTF inlet temperature, the HTF volume flow rate should be adjusted to meet the design requirements such as duration of discharge and to ensure that a useable HTF outlet temperature was achieved.…”

Section: Introductionmentioning

confidence: 99%

Thermal Performance Analysis of the Charging/Discharging Process of a Shell and Horizontally Oriented Multi-Tube Latent Heat Storage System

Fadl

Eames

2020

Energies

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In this study, the thermal performance of latent heat thermal energy storage system (LHTESS) prototype to be used in a range of thermal systems (e.g., solar water heating systems, space heating/domestic hot water applications) is designed, fabricated, and experimentally investigated. The thermal store comprised a novel horizontally oriented multitube heat exchanger in a rectangular tank (forming the shell) filled with 37.8 kg of phase change material (PCM) RT62HC with water as the working fluid. The assessment of thermal performance during charging (melting) and discharging (solidification) was conducted under controlled several operational conditions comprising the heat transfer fluid (HTF) volume flow rates and inlet temperatures. The experimental investigations reported are focused on evaluating the transient PCM average temperature distribution at different heights within the storage unit, charging/discharging time, instantaneous transient charging/discharging power, and the total cumulative thermal energy stored/released. From the experimental results, it is noticed that both melting/solidification time significantly decreased with increase HTF volume flow rate and that changing the HTF inlet temperature shows large impacts on charging time compared to changing the HTF volume flow rate. During the discharging process, the maximum power output was initially 4.48 kW for HTF volume flow rate of 1.7 L/min, decreasing to 1.0 kW after 52.3 min with 2.67 kWh of heat delivered. Based on application heat demand characteristics, required power levels and heat demand can be fulfilled by employing several stores in parallel or series.

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Section: Introductionmentioning

confidence: 99%

Thermal Performance Analysis of the Charging/Discharging Process of a Shell and Horizontally Oriented Multi-Tube Latent Heat Storage System

Fadl

Eames

2020

Energies

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“…. is the first gap of industrial needs [12][13][14]. There is no doubt that KPIs have enormous potential as a comparative method of machine performance and, consequently, a tool in monitoring continuous improvement [15].…”

Section: Introductionmentioning

confidence: 99%

Energy Key Performance Indicators for Mobile Machinery

Roquet¹,

Raush

Berne

et al. 2022

Energies

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Mobile machinery manufacturers must face and deal with reducing fuel consumption, rising prices, and environmental pollution. The development of methods to evaluate the efficiency and effectiveness of the energy performance of hydraulically actuated systems has become a priority for researchers and OEMs, Original Equipment Manufacturers. In this paper, a new methodology that is based on Key Performance Indicators, KPI, is proposed with different goals: (i) to evaluate the energy performance and the monitoring of its evolution in the different stages of its life cycle (design, commissioning, optimization, retrofit, etc.); (ii) compare the energy levels between machines of different sizes and different brands in a benchmarking process; and (iii) establish a database that is state of the art, which facilitates setting achievable goals or limits for improvement. These KPI values can be deduced simply from the energy balances that were made from the experimental study of various machines over a relatively long period. This methodology has been applied to typical hydraulic systems for lifting and lowering loads that are used in a wide variety of mobile machines of different mechanical designs and sizes. Still, it can be included in the generic name of “loaders”. A KPI’s values for the three machines are presented in a dashboard as a decision-making tool.

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“…According to the scientific literature, qualitative research applied in management sciences has shown good results for managerial decision-making. Some of the most interesting cases are Agarwal et al [10], Osman et al [11], Zeidan et al [12] who through topics such as knowledge management, marketing and administration show creative and effective solutions to managerial problems. However, qualitative studies present certain conceptual gaps in those authors who are initiating research.…”

mentioning

confidence: 99%

Qualitative Research Applied to Organisations. An Approach to Business Reality

González-Díaz

Lugo-Báez

Medina-Patron

et al. 2021

Perspectives and Trends in Education and Technology

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This study aims to analyse the application of qualitative research in business organisations. For this purpose, a documentary analysis was applied and 5 most cited SAGE Publishing 2017 Publications in 2010 were selected. The analysis consisted of two phases: Phase 1 structuring of main and secondary ideas. Phase 2. Analysis of contributions according to the following approaches: Ontological Approach, Epistemological Approach and Methodological Approach. For this purpose, the Atlas.ti9 software was used to determine the points of convergence between the approaches and authors. The main findings show that qualitative research in organisational studies presents ontological weaknesses in terms of onto-epistemic positioning and priority is given to the methodological approach. Likewise, it is recommended to broaden the field of action of such research under this methodology, to take advantage of pluralism for the construction of theories and methodological contributions that help the study of the social phenomenon.

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Key performance indicators (KPIs): Assessing the process integration of a shell-and-tube latent heat storage unit

Cited by 13 publications

References 43 publications

Thermal Performance Analysis of the Charging/Discharging Process of a Shell and Horizontally Oriented Multi-Tube Latent Heat Storage System

Thermal Performance Analysis of the Charging/Discharging Process of a Shell and Horizontally Oriented Multi-Tube Latent Heat Storage System

Energy Key Performance Indicators for Mobile Machinery

Qualitative Research Applied to Organisations. An Approach to Business Reality

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