The scarcity of potable water added more pressure on the Palestinian and is considered obstacles in planning for sustainable development. It is so important to find alternatives that have no adverse effect on the envi...The scarcity of potable water added more pressure on the Palestinian and is considered obstacles in planning for sustainable development. It is so important to find alternatives that have no adverse effect on the environment and at the same time provide genuine solutions to the available resources. In this paper a new paradigm for desalinating brackish and seawater is introduced. The proposed system is technically descried with size optimization that may cater for providing definite amount of potable water serving small communities. The main driving energy, electrical and thermal, is converted from the all around year available solar radiation.展开更多
In order to attain the best energy efficiency in an industrial plant, an energy audit is a prerequisite process for identifying the general energy consumption condition and to hence identify the measures that need to ...In order to attain the best energy efficiency in an industrial plant, an energy audit is a prerequisite process for identifying the general energy consumption condition and to hence identify the measures that need to be taken to save the cost of excessive energy consumed and later to retrofit the faults that were observed. The case study presented in this paper is a medium industry plant located in Hebron. The audit methodology, observation, and audit results will be presented and discussed with the recommendation drawn.展开更多
The main purpose of this study is to analyze the performance of a new system that combines organic Rankine Cycle(ORC) and vapor compression refrigeration cycle(VCRC) for refrigeration and cogeneration. This system use...The main purpose of this study is to analyze the performance of a new system that combines organic Rankine Cycle(ORC) and vapor compression refrigeration cycle(VCRC) for refrigeration and cogeneration. This system uses low-temperature heat sources such as solar energy, geothermal, industrial waste heat and biomass. The novelty of the proposed system manifests itself essentially in: the development of new ORC-VCRC combination architecture, lowering the ORC condensing temperature, the possibility of refrigeration production by the ORC upstream of the pumping phase, preheating of ORC using VCRC fluid and new configurations based on the integration of heat recovery systems to improve the overall system performance. The first part of this study presents the energetic analysis for the basic system using different working fluids and investigation of the operating parameters effect on the system performance(The system performance is described by the ORC thermal efficiency, the VCRC coefficient of performance and the system overall efficiency). Ten working fluids have been selected in order to provide the most adequate candidates for the proposed system. The results showed that the heating temperature and the cooling temperature have a significant effect on the system performance. The choice of fluid was also mentioned;the obtained results confirmed that the best combination for the basic system is R236fa-acetone. Four system configurations are developed and analyzed in the second part of the study. Also in the same part of the study, we will compare these configurations in terms of the performance rate retained. In the last part, we will make a comparison of this new system with another system.展开更多
Lanthanide ions doped luminescent materials are widely studied for latent fingerprint detection.However,most of these materials are synthesized at very high temperatures and use UV C light for visualization,which is h...Lanthanide ions doped luminescent materials are widely studied for latent fingerprint detection.However,most of these materials are synthesized at very high temperatures and use UV C light for visualization,which is harmful to eye,skin,etc.Herein,the Gd_(0.95)Eu_(0.05)PO_(4) nanorods synthesized by a simple co-precipitation method at 185℃ were reported for latent fingerprint visualization under 395 nm light.The Gd_(0.95)Eu_(0.05)PO_(4) nanomaterial has monoclinic crystal structure and shows rod-shaped morphology.Further,these Gd_(0.95)Eu_(0.05)PO_(4) nanorods exhibit excellent photoluminescence properties and strong fuchsia emission under UV light.These nanorods have been employed for developing latent fingerprints on various porous and non-porous substrates by the powder dusting technique,which exhibits clear and well defined details with high contrast,selectivity and sensitivity under 395 nm UV light.Latent fingerprints developed after 72 h of their deposition also show clear contrast with these nanorods.Therefore,the Gd_(0.95)Eu_(0.05)PO_(4) nanorods can be used for latent fingerprint visualization applications.展开更多
文摘The scarcity of potable water added more pressure on the Palestinian and is considered obstacles in planning for sustainable development. It is so important to find alternatives that have no adverse effect on the environment and at the same time provide genuine solutions to the available resources. In this paper a new paradigm for desalinating brackish and seawater is introduced. The proposed system is technically descried with size optimization that may cater for providing definite amount of potable water serving small communities. The main driving energy, electrical and thermal, is converted from the all around year available solar radiation.
文摘In order to attain the best energy efficiency in an industrial plant, an energy audit is a prerequisite process for identifying the general energy consumption condition and to hence identify the measures that need to be taken to save the cost of excessive energy consumed and later to retrofit the faults that were observed. The case study presented in this paper is a medium industry plant located in Hebron. The audit methodology, observation, and audit results will be presented and discussed with the recommendation drawn.
文摘The main purpose of this study is to analyze the performance of a new system that combines organic Rankine Cycle(ORC) and vapor compression refrigeration cycle(VCRC) for refrigeration and cogeneration. This system uses low-temperature heat sources such as solar energy, geothermal, industrial waste heat and biomass. The novelty of the proposed system manifests itself essentially in: the development of new ORC-VCRC combination architecture, lowering the ORC condensing temperature, the possibility of refrigeration production by the ORC upstream of the pumping phase, preheating of ORC using VCRC fluid and new configurations based on the integration of heat recovery systems to improve the overall system performance. The first part of this study presents the energetic analysis for the basic system using different working fluids and investigation of the operating parameters effect on the system performance(The system performance is described by the ORC thermal efficiency, the VCRC coefficient of performance and the system overall efficiency). Ten working fluids have been selected in order to provide the most adequate candidates for the proposed system. The results showed that the heating temperature and the cooling temperature have a significant effect on the system performance. The choice of fluid was also mentioned;the obtained results confirmed that the best combination for the basic system is R236fa-acetone. Four system configurations are developed and analyzed in the second part of the study. Also in the same part of the study, we will compare these configurations in terms of the performance rate retained. In the last part, we will make a comparison of this new system with another system.
基金Project supported by the Science and Engineering Research Board(SERB),India(ECR/2015/000333)。
文摘Lanthanide ions doped luminescent materials are widely studied for latent fingerprint detection.However,most of these materials are synthesized at very high temperatures and use UV C light for visualization,which is harmful to eye,skin,etc.Herein,the Gd_(0.95)Eu_(0.05)PO_(4) nanorods synthesized by a simple co-precipitation method at 185℃ were reported for latent fingerprint visualization under 395 nm light.The Gd_(0.95)Eu_(0.05)PO_(4) nanomaterial has monoclinic crystal structure and shows rod-shaped morphology.Further,these Gd_(0.95)Eu_(0.05)PO_(4) nanorods exhibit excellent photoluminescence properties and strong fuchsia emission under UV light.These nanorods have been employed for developing latent fingerprints on various porous and non-porous substrates by the powder dusting technique,which exhibits clear and well defined details with high contrast,selectivity and sensitivity under 395 nm UV light.Latent fingerprints developed after 72 h of their deposition also show clear contrast with these nanorods.Therefore,the Gd_(0.95)Eu_(0.05)PO_(4) nanorods can be used for latent fingerprint visualization applications.
