Taoufik Mezni - Academia.edu (original) (raw)

Papers by Taoufik Mezni

Research paper thumbnail of Simulation et caractérisation du comportement énergétique des machines frigorifiques à absorption simple effet (couple Eau/LiBr)

1st International Refrigeration, Energy and Environment Colloquium. Proceedings: Hammamet, Tunisia, March 24-27, 2016., Mar 24, 2016

Research paper thumbnail of Energetic and Economic Study of Geothermal System in Tourist and Therapeutic Hotel

Advances in Mechanical Engineering and Mechanics II, 2021

Research paper thumbnail of Energetic performance and economic analysis of a solar water heating system for different flow rates values: A case study

Solar Energy, 2017

An existing solar installation located in the south of Tunisia was studied using TRNSYS software ... more An existing solar installation located in the south of Tunisia was studied using TRNSYS software coupled with a developed model for pump mechanical power consumption calculation. First, this installation was simulated using TRNSYS software and the simulation results were compared with experimental measurements. Then, its thermal performance and economic viability was studied for different flow rates values of the primary and secondary circuits. It was found that the optimal flow rates values for maximum annual energy or net energy production are of 10 kg/hÁm 2 for primary circuit (close to average water draw flow rate value) and of 15 kg/hÁm 2 for secondary circuit (close to average water draw flow rate value during solar production period of the day). Also, it was demonstrated that the optimal flow rate value of primary circuit depends on season whereas the optimal flow rate value of the secondary circuit is independent of season only for primary circuit flow rate value strictly lower than 7.5 kg/hÁm 2. Moreover, it was noted that flow rate optimization may improve the solar installation thermal performance but it's not sufficient to fix a sanitary risk problem. Concerning pumps consumption, it was found that the primary circuits pump energy consumption can represent from 66% of total pumps energy consumption for low flow to 97% for high flow. Finally, it was concluded that investing in solar installation was more economically interesting in case of replacing an electrical existing conventional installation than a gas one. By analogy, it was concluded that using a gas auxiliary heater was more economically viable.

Research paper thumbnail of Energetic and Economic Impact of Using Bioclimatic Design Technics and of Solar Water Preheating System Integration on Tertiary Building

International Journal of Renewable Energy Research

Research paper thumbnail of The assessment of buildings and constructions sector of economy proposal: an environmental perspective

Environmental Science and Pollution Research, 2021

Environmental impact assessment methods suffer from an applicability issue which could impede the... more Environmental impact assessment methods suffer from an applicability issue which could impede their use and development. The main subject of this article is to present a method to evaluate the applicability of building environmental assessment method in a given country. Here, when we say that a method is applicable in a given country, it means that it could be widely used and that it could produce the expected effects in terms of energy savings, environmental impact minimization, economic gain, etc. So, for this applicability evaluation purpose, the main criteria that affect the building environmental assessment method applicability were identified and were weighted by studying different scenarios. Then, the evaluation method was applied to the Tunisian case. Moreover, in order to contribute to a better understanding of the importance of building environmental assessment method implementation, stakes related thereto are reviewed. It was reported that building environmental assessment method would concur to improve building energy efficiency, enhance social capital, and contribute to environmental, social, and economic stability. In addition, it could be one of the major solutions for the collection of statistical data, which in turn would contribute to the success of projects undertaken as part of the green economy. Eventually, the building environmental assessment could be one of the major green marketing tools and should be taken into account by a company to improve profitability. The developed method and the presented stakes could be a good management and decision making tools and could help legislators and policy-makers for the best implementation of building environmental assessment method.

Research paper thumbnail of Study of Heat and Mass Transfer Mechanisms in a Turbulent Fluidized Bed

Advances in Mechanical Engineering and Mechanics II, 2021

Research paper thumbnail of Presentation and experimental validation of a solar DHW installation sizing control tool

International Journal of Hydrogen Energy, 2017

Abstract A knowledge-based model aiming to check the correct sizing of an active indirect solar w... more Abstract A knowledge-based model aiming to check the correct sizing of an active indirect solar water heating system with an external heat exchanger is presented. This model has been subjected to an experimental validation trial where the effect of input data measurement uncertainties on each simulated variable was exposed. It was noted that each input data measurement error has a different effect depending on the time and the simulated variable. After the experimental validation, in order to take into account the fouling effect when controlling a solar installation sizing, its impact on solar installation energetic performance was studied. The results show that it can cause the decrease of the solar installation energy intake and of the storage tank outlet temperature to load, respectively by a value of 9.06% and 1.68 °C. It can also cause the increase of the collector outlet temperature by a value of 1.3 °C. Finally, the presented tool was used to control solar installation sizing. The sanitary, energetic and longevity aspects were examined. These latters were respectively checked by evaluating the storage tank outlet temperature to load, the energy produced by the solar installation and the collector outlet temperature.

Research paper thumbnail of Simulation et caractérisation du comportement énergétique des machines frigorifiques à absorption simple effet (couple Eau/LiBr)

1st International Refrigeration, Energy and Environment Colloquium. Proceedings: Hammamet, Tunisia, March 24-27, 2016., Mar 24, 2016

Research paper thumbnail of Energetic and Economic Study of Geothermal System in Tourist and Therapeutic Hotel

Advances in Mechanical Engineering and Mechanics II, 2021

Research paper thumbnail of Energetic performance and economic analysis of a solar water heating system for different flow rates values: A case study

Solar Energy, 2017

An existing solar installation located in the south of Tunisia was studied using TRNSYS software ... more An existing solar installation located in the south of Tunisia was studied using TRNSYS software coupled with a developed model for pump mechanical power consumption calculation. First, this installation was simulated using TRNSYS software and the simulation results were compared with experimental measurements. Then, its thermal performance and economic viability was studied for different flow rates values of the primary and secondary circuits. It was found that the optimal flow rates values for maximum annual energy or net energy production are of 10 kg/hÁm 2 for primary circuit (close to average water draw flow rate value) and of 15 kg/hÁm 2 for secondary circuit (close to average water draw flow rate value during solar production period of the day). Also, it was demonstrated that the optimal flow rate value of primary circuit depends on season whereas the optimal flow rate value of the secondary circuit is independent of season only for primary circuit flow rate value strictly lower than 7.5 kg/hÁm 2. Moreover, it was noted that flow rate optimization may improve the solar installation thermal performance but it's not sufficient to fix a sanitary risk problem. Concerning pumps consumption, it was found that the primary circuits pump energy consumption can represent from 66% of total pumps energy consumption for low flow to 97% for high flow. Finally, it was concluded that investing in solar installation was more economically interesting in case of replacing an electrical existing conventional installation than a gas one. By analogy, it was concluded that using a gas auxiliary heater was more economically viable.

Research paper thumbnail of Energetic and Economic Impact of Using Bioclimatic Design Technics and of Solar Water Preheating System Integration on Tertiary Building

International Journal of Renewable Energy Research

Research paper thumbnail of The assessment of buildings and constructions sector of economy proposal: an environmental perspective

Environmental Science and Pollution Research, 2021

Environmental impact assessment methods suffer from an applicability issue which could impede the... more Environmental impact assessment methods suffer from an applicability issue which could impede their use and development. The main subject of this article is to present a method to evaluate the applicability of building environmental assessment method in a given country. Here, when we say that a method is applicable in a given country, it means that it could be widely used and that it could produce the expected effects in terms of energy savings, environmental impact minimization, economic gain, etc. So, for this applicability evaluation purpose, the main criteria that affect the building environmental assessment method applicability were identified and were weighted by studying different scenarios. Then, the evaluation method was applied to the Tunisian case. Moreover, in order to contribute to a better understanding of the importance of building environmental assessment method implementation, stakes related thereto are reviewed. It was reported that building environmental assessment method would concur to improve building energy efficiency, enhance social capital, and contribute to environmental, social, and economic stability. In addition, it could be one of the major solutions for the collection of statistical data, which in turn would contribute to the success of projects undertaken as part of the green economy. Eventually, the building environmental assessment could be one of the major green marketing tools and should be taken into account by a company to improve profitability. The developed method and the presented stakes could be a good management and decision making tools and could help legislators and policy-makers for the best implementation of building environmental assessment method.

Research paper thumbnail of Study of Heat and Mass Transfer Mechanisms in a Turbulent Fluidized Bed

Advances in Mechanical Engineering and Mechanics II, 2021

Research paper thumbnail of Presentation and experimental validation of a solar DHW installation sizing control tool

International Journal of Hydrogen Energy, 2017

Abstract A knowledge-based model aiming to check the correct sizing of an active indirect solar w... more Abstract A knowledge-based model aiming to check the correct sizing of an active indirect solar water heating system with an external heat exchanger is presented. This model has been subjected to an experimental validation trial where the effect of input data measurement uncertainties on each simulated variable was exposed. It was noted that each input data measurement error has a different effect depending on the time and the simulated variable. After the experimental validation, in order to take into account the fouling effect when controlling a solar installation sizing, its impact on solar installation energetic performance was studied. The results show that it can cause the decrease of the solar installation energy intake and of the storage tank outlet temperature to load, respectively by a value of 9.06% and 1.68 °C. It can also cause the increase of the collector outlet temperature by a value of 1.3 °C. Finally, the presented tool was used to control solar installation sizing. The sanitary, energetic and longevity aspects were examined. These latters were respectively checked by evaluating the storage tank outlet temperature to load, the energy produced by the solar installation and the collector outlet temperature.