This paper investigates the effect of cryogenic cooling on surface integrity of Inconel 718 in milling operations. The cutting process was conducted using carbide coated ball nose milling inserts and liquid nitrogen as the coolant. A full factorial with three factors two levels each was adopted to run the experiments. Results revealed that the surface roughness were in the range of 0.134 μm to 0.264 μm which were less than the values obtained using manual polishing process (≈0.5 μm). The roughness was significantly affected by the interaction between cutting speed and feed rate followed by the radial depth of cut. Microstructure beneath the machined surface exhibited some plastic deformation down to 30.93 μm due to the sliding of tool over the surface during the shearing process that increased the cutting pressure at elevated temperature and caused deformation of the grain structure, which was better than dry machining.
{"title":"Machining-induced microstructure of Inconel 718 in cryogenic environment","authors":"N. A. Halim, C. Haron, J. A. Ghani, M. Azhar","doi":"10.1504/PIE.2018.097061","DOIUrl":"https://doi.org/10.1504/PIE.2018.097061","url":null,"abstract":"This paper investigates the effect of cryogenic cooling on surface integrity of Inconel 718 in milling operations. The cutting process was conducted using carbide coated ball nose milling inserts and liquid nitrogen as the coolant. A full factorial with three factors two levels each was adopted to run the experiments. Results revealed that the surface roughness were in the range of 0.134 μm to 0.264 μm which were less than the values obtained using manual polishing process (≈0.5 μm). The roughness was significantly affected by the interaction between cutting speed and feed rate followed by the radial depth of cut. Microstructure beneath the machined surface exhibited some plastic deformation down to 30.93 μm due to the sliding of tool over the surface during the shearing process that increased the cutting pressure at elevated temperature and caused deformation of the grain structure, which was better than dry machining.","PeriodicalId":35407,"journal":{"name":"Progress in Industrial Ecology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1504/PIE.2018.097061","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46521723","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-12-19DOI: 10.1504/PIE.2018.10018045
S. Kassim, N. Azman
Photonic crystal (PhCs) has versatile properties with potential to enhance solar cell application. Nanoparticles of poly (methyl methacrylate) (PMMA) have been successfully prepared by green-chemistry approach where no surfactant, cross linking agent and solvent was involved. Introducing of acid hydrolysed TEOS in PhCs boost of numerous fascinating approaches to the enhancement PhCs backbone. Incorporated of metal complex such as zinc(II) complexes were prepared by refluxing in PhCs improved characteristic of solar cells application because of high photocatalytic activity. The experimental results suggest that involving localised surface plasmon resonance (LSPR) properties from excellent plasmonic nanoparticles such gold, silver or the alloy (gold and silver) would enhanced light trapping performance as expressed by properties. The composite inverse photonic crystal was characterised by using FTIR and SEM-EDS.
{"title":"Synthesis and analysis of photonic crystal and Zn(II) complex bearing thiosemicarbazide moiety","authors":"S. Kassim, N. Azman","doi":"10.1504/PIE.2018.10018045","DOIUrl":"https://doi.org/10.1504/PIE.2018.10018045","url":null,"abstract":"Photonic crystal (PhCs) has versatile properties with potential to enhance solar cell application. Nanoparticles of poly (methyl methacrylate) (PMMA) have been successfully prepared by green-chemistry approach where no surfactant, cross linking agent and solvent was involved. Introducing of acid hydrolysed TEOS in PhCs boost of numerous fascinating approaches to the enhancement PhCs backbone. Incorporated of metal complex such as zinc(II) complexes were prepared by refluxing in PhCs improved characteristic of solar cells application because of high photocatalytic activity. The experimental results suggest that involving localised surface plasmon resonance (LSPR) properties from excellent plasmonic nanoparticles such gold, silver or the alloy (gold and silver) would enhanced light trapping performance as expressed by properties. The composite inverse photonic crystal was characterised by using FTIR and SEM-EDS.","PeriodicalId":35407,"journal":{"name":"Progress in Industrial Ecology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44038431","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-12-19DOI: 10.1504/PIE.2018.10018044
Sriwan Khamtree, T. Ratanawilai, S. Ratanawilai
The effect of the untreated and alkaline treated rubberwood flour (RWF) on water absorption, tensile and flexural properties of the wood plastic composites (WPCs) was investigated. The surface of RWF was treated by an alkaline treatment with NaOH solution of 2% w/v concentration for 24 h. The results showed that the RWF treated with alkaline could enhance the interfacial adhesion with rPP and also improve the water absorption and tensile and flexural properties of WPCs. In addition, the alkaline treatment and RWF content significantly affected the tensile and flexural strength. The alkaline treatment also increased water resistance of WPCs, which at 20% RWF content showed the lower water absorption (2.04%). The highest tensile strength (17.75 MPa) and flexural strength (35.73 MPa) of WPCs were achieved with an alkaline treatment at 30 wt% RWF. Moreover, the tensile and flexural modulus of WPCs increased with increasing RWF content (20% to 50%).
{"title":"A comparison on untreated and alkaline treated rubberwood flour on physical and mechanical properties of wood plastic composites","authors":"Sriwan Khamtree, T. Ratanawilai, S. Ratanawilai","doi":"10.1504/PIE.2018.10018044","DOIUrl":"https://doi.org/10.1504/PIE.2018.10018044","url":null,"abstract":"The effect of the untreated and alkaline treated rubberwood flour (RWF) on water absorption, tensile and flexural properties of the wood plastic composites (WPCs) was investigated. The surface of RWF was treated by an alkaline treatment with NaOH solution of 2% w/v concentration for 24 h. The results showed that the RWF treated with alkaline could enhance the interfacial adhesion with rPP and also improve the water absorption and tensile and flexural properties of WPCs. In addition, the alkaline treatment and RWF content significantly affected the tensile and flexural strength. The alkaline treatment also increased water resistance of WPCs, which at 20% RWF content showed the lower water absorption (2.04%). The highest tensile strength (17.75 MPa) and flexural strength (35.73 MPa) of WPCs were achieved with an alkaline treatment at 30 wt% RWF. Moreover, the tensile and flexural modulus of WPCs increased with increasing RWF content (20% to 50%).","PeriodicalId":35407,"journal":{"name":"Progress in Industrial Ecology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49264117","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-12-19DOI: 10.1504/PIE.2018.10018037
M. Jumadi, M. R. Mansor, Z. Mustafa
The hydrophilic nature of natural fibre in natural fibre composite (NFC) can reduce the material properties thus degrading the competitiveness of NFC as compared to synthetic fibre composite. This paper presents the water absorption effect on the mechanical properties of NFC made from kenaf reinforced recycled polymer blend. The recycled polymer blend is sourced from rejected-unused disposable diapers containing polypropylene and polyethylene (r-PP/PE). The kenaf flour fibre is compounded with r-PP/PE by using internal mixer machine with five variations of fibre loading which are 0, 30, 40, 50, and 60 wt.%. The water immersion test is conducted by immersing the samples in the distilled water for 24 hours as well as samples for tensile, flexural, and Izod impact tests. Experimental results show some improvement on some properties (impact strength) as well as degradation in other mechanical properties. The fractography analyses revealed the failure modes caused by fibre pull-out, matrix cracking, and fibre swelling and voids that induced micro cracks.
{"title":"Influence of water absorptivity on kenaf fibre reinforced recycled-polymer composite properties","authors":"M. Jumadi, M. R. Mansor, Z. Mustafa","doi":"10.1504/PIE.2018.10018037","DOIUrl":"https://doi.org/10.1504/PIE.2018.10018037","url":null,"abstract":"The hydrophilic nature of natural fibre in natural fibre composite (NFC) can reduce the material properties thus degrading the competitiveness of NFC as compared to synthetic fibre composite. This paper presents the water absorption effect on the mechanical properties of NFC made from kenaf reinforced recycled polymer blend. The recycled polymer blend is sourced from rejected-unused disposable diapers containing polypropylene and polyethylene (r-PP/PE). The kenaf flour fibre is compounded with r-PP/PE by using internal mixer machine with five variations of fibre loading which are 0, 30, 40, 50, and 60 wt.%. The water immersion test is conducted by immersing the samples in the distilled water for 24 hours as well as samples for tensile, flexural, and Izod impact tests. Experimental results show some improvement on some properties (impact strength) as well as degradation in other mechanical properties. The fractography analyses revealed the failure modes caused by fibre pull-out, matrix cracking, and fibre swelling and voids that induced micro cracks.","PeriodicalId":35407,"journal":{"name":"Progress in Industrial Ecology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47529766","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Cryogenic machining is the use of a cryogen medium, an alternative to conventional flood cooling used in material cutting operations. The use of cryogenic machining could improve the functional performance of machined parts, through engineered surface integrity. The state of the art of cryogenic machining, benefits, and applications have been reviewed first. It is obvious that cryogenic research to date has focused on the hard-to-cut materials such as titanium, Inconel 718 and AISI 52100 but few studies were carried out on hardened steel. The overall objective of this review is to advance the state of art of cryogenic machining in terms of machinability and thus complement available limited literature. Cryogenic machining can increase machinability, in terms of its effects on tool life, cutting force, chip formation, and surface integrity. In conclusion, cryogenic application in manufacturing processes could possibly be used as an enhancement method for surface hardening when using appropriate cutting conditions, thus avoiding expensive and time-consuming post-treatment processes.
{"title":"A review on future implementation of cryogenic machining in manufacturing industry","authors":"S. Muhamad, J. Ghani, C. Haron","doi":"10.1504/PIE.2018.097065","DOIUrl":"https://doi.org/10.1504/PIE.2018.097065","url":null,"abstract":"Cryogenic machining is the use of a cryogen medium, an alternative to conventional flood cooling used in material cutting operations. The use of cryogenic machining could improve the functional performance of machined parts, through engineered surface integrity. The state of the art of cryogenic machining, benefits, and applications have been reviewed first. It is obvious that cryogenic research to date has focused on the hard-to-cut materials such as titanium, Inconel 718 and AISI 52100 but few studies were carried out on hardened steel. The overall objective of this review is to advance the state of art of cryogenic machining in terms of machinability and thus complement available limited literature. Cryogenic machining can increase machinability, in terms of its effects on tool life, cutting force, chip formation, and surface integrity. In conclusion, cryogenic application in manufacturing processes could possibly be used as an enhancement method for surface hardening when using appropriate cutting conditions, thus avoiding expensive and time-consuming post-treatment processes.","PeriodicalId":35407,"journal":{"name":"Progress in Industrial Ecology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1504/PIE.2018.097065","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48149030","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-12-19DOI: 10.1504/PIE.2018.10018039
A. Utomo, E. P. Budiana, Triyono
This work proposed the use of the finite element method (FEM) for modelling the temperature distribution of dissimilar metals that were resistance spot welded on the basis of welding parameters. Stainless steel SUS 304 and low carbon steel SS 400 were used. Their properties were set to change according to the temperature history. The modelling set a constant weld current of 12.2 kA as the wave input with a frequency of 50 Hz. ANSYS 12.0 was used to complete the FEM with the discretisation from the resemblance energy. The result of the modelling showed that the highest temperature was always attained at the end of the weld time. The highest temperature of 1456°C was used; this temperature was attained with a weld time of 0.30 s. On the basis of the melting point of the used materials, it can be assumed that the nugget began to form.
{"title":"Modelling of the temperature distribution of resistance-spot-welded dissimilar metals using the finite element method","authors":"A. Utomo, E. P. Budiana, Triyono","doi":"10.1504/PIE.2018.10018039","DOIUrl":"https://doi.org/10.1504/PIE.2018.10018039","url":null,"abstract":"This work proposed the use of the finite element method (FEM) for modelling the temperature distribution of dissimilar metals that were resistance spot welded on the basis of welding parameters. Stainless steel SUS 304 and low carbon steel SS 400 were used. Their properties were set to change according to the temperature history. The modelling set a constant weld current of 12.2 kA as the wave input with a frequency of 50 Hz. ANSYS 12.0 was used to complete the FEM with the discretisation from the resemblance energy. The result of the modelling showed that the highest temperature was always attained at the end of the weld time. The highest temperature of 1456°C was used; this temperature was attained with a weld time of 0.30 s. On the basis of the melting point of the used materials, it can be assumed that the nugget began to form.","PeriodicalId":35407,"journal":{"name":"Progress in Industrial Ecology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47942948","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-12-19DOI: 10.1504/PIE.2018.10018043
Nik Nurul Husna Muhmed Razali, A. Yusoff
The main objective of this paper is to optimise energy harvesting design of piezoelectric and magnetic based on vibration excitation; an alternate method for predicting the power output of a bimorph cantilever beam using finite element method with harmonic analysis solver. Both power output generated from the electromagnetic and the piezoelectric were combined to form one unit of energy. In addition, the optimum model was analysed using parametric optimisation analysis solver in finite element analysis to produce an optimum power output. The result showed a maximum power output of 56.66 μW from 47.94 Hz, 4.905 m/s2, and 0.18 cm3 generated for resonance frequency with acceleration and volume. The decreasing size of the harvester with a low natural frequency produces a high-power output.
{"title":"Optimisation of hybrid energy harvesting using finite element method based on vibration excitation","authors":"Nik Nurul Husna Muhmed Razali, A. Yusoff","doi":"10.1504/PIE.2018.10018043","DOIUrl":"https://doi.org/10.1504/PIE.2018.10018043","url":null,"abstract":"The main objective of this paper is to optimise energy harvesting design of piezoelectric and magnetic based on vibration excitation; an alternate method for predicting the power output of a bimorph cantilever beam using finite element method with harmonic analysis solver. Both power output generated from the electromagnetic and the piezoelectric were combined to form one unit of energy. In addition, the optimum model was analysed using parametric optimisation analysis solver in finite element analysis to produce an optimum power output. The result showed a maximum power output of 56.66 μW from 47.94 Hz, 4.905 m/s2, and 0.18 cm3 generated for resonance frequency with acceleration and volume. The decreasing size of the harvester with a low natural frequency produces a high-power output.","PeriodicalId":35407,"journal":{"name":"Progress in Industrial Ecology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44564396","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-10-27DOI: 10.1504/PIE.2018.10014662
S. Afolalu, A. Abioye, Joseph Idirisu, I. Okokpujie, Omolayo M. Ikumapayi
Most of the cutting tools in use are imported and the cost of replacement is high, hence there is need to develop them locally. This research work studied the abrasion wear of cutting tools developed from recycled steel using palm kernel shell (PKS) as carbon additive. The chemical composition of the materials was analysed before and after the melting. Alloy additives were added and then carburized in a furnace at different temperatures and time ranges. The toughness, surface and core hardness were carried out given 24.0 J/cm2, 76.8 and 47.9 HR with 17 J/cm2, 76.3 and 46.1 HR for the control. It was observed that the tool cut the work piece easily on a lathe machine with the best minimum length of cut 50 mm for the time of cut 1.19 and 2.02 minutes mm. It can be concluded that the developed cutting tool showed significant performances during machining.
{"title":"Abrasion wear of cutting tool developed from recycled steel using palm kernel shell as carbon additive","authors":"S. Afolalu, A. Abioye, Joseph Idirisu, I. Okokpujie, Omolayo M. Ikumapayi","doi":"10.1504/PIE.2018.10014662","DOIUrl":"https://doi.org/10.1504/PIE.2018.10014662","url":null,"abstract":"Most of the cutting tools in use are imported and the cost of replacement is high, hence there is need to develop them locally. This research work studied the abrasion wear of cutting tools developed from recycled steel using palm kernel shell (PKS) as carbon additive. The chemical composition of the materials was analysed before and after the melting. Alloy additives were added and then carburized in a furnace at different temperatures and time ranges. The toughness, surface and core hardness were carried out given 24.0 J/cm2, 76.8 and 47.9 HR with 17 J/cm2, 76.3 and 46.1 HR for the control. It was observed that the tool cut the work piece easily on a lathe machine with the best minimum length of cut 50 mm for the time of cut 1.19 and 2.02 minutes mm. It can be concluded that the developed cutting tool showed significant performances during machining.","PeriodicalId":35407,"journal":{"name":"Progress in Industrial Ecology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43596607","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-10-27DOI: 10.1504/PIE.2018.10016967
Kalakanda Alfred Sunny, Pradeep Kumar, Nallapaneni Manoj Kumar, S. Priscilla
This paper discusses the performance of three blade vertical axis wind turbine. 2D computational flow analysis is carried out for different rotational speeds of the blades in a plane normal to wind turbine axis. It is implied that turbine blades have infinite aspect ratio. The selection is done based on the lift and drags generated by the various NACA series airfoil (NACA 0012, NACA 0015, NACA 0018, and NACA 0021) at a different angle of attacks, among them NACA 0015 airfoil is found to be most suitable one. A triangular meshed geometry is created and computational fluid dynamics (CFD) simulation is carried out. The computational analysis is performed at various speeds of VAWT blade rotation where the position of the airfoil is made with respect to the wind. Torques generated at different blade positions in a VAWT and the forces by the turbine over one full complete cycle were studied.
{"title":"Computational analysis of three blade vertical axis wind turbine","authors":"Kalakanda Alfred Sunny, Pradeep Kumar, Nallapaneni Manoj Kumar, S. Priscilla","doi":"10.1504/PIE.2018.10016967","DOIUrl":"https://doi.org/10.1504/PIE.2018.10016967","url":null,"abstract":"This paper discusses the performance of three blade vertical axis wind turbine. 2D computational flow analysis is carried out for different rotational speeds of the blades in a plane normal to wind turbine axis. It is implied that turbine blades have infinite aspect ratio. The selection is done based on the lift and drags generated by the various NACA series airfoil (NACA 0012, NACA 0015, NACA 0018, and NACA 0021) at a different angle of attacks, among them NACA 0015 airfoil is found to be most suitable one. A triangular meshed geometry is created and computational fluid dynamics (CFD) simulation is carried out. The computational analysis is performed at various speeds of VAWT blade rotation where the position of the airfoil is made with respect to the wind. Torques generated at different blade positions in a VAWT and the forces by the turbine over one full complete cycle were studied.","PeriodicalId":35407,"journal":{"name":"Progress in Industrial Ecology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47792744","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-10-27DOI: 10.1504/PIE.2018.10016970
K. Deepak, A. Gupta
Numerical study of Kalina cycle based power generating systems has been presented to utilise low temperature geothermal heat source. Computer codes have been developed in MATLAB to evaluate the thermal properties of working fluid. The performance of systems has been analysed considering the operating parameters that suit Indian climatic conditions. Parametric analyses of the Kalina cycle configurations have been presented showing the effect of key parameters on system performance. The efficiency of low temperature Kalina cycle system is noted to be 12.95% operating at 145oC. The cycle efficiency has improved by 2% with the incorporation of an auxiliary superheater in the system. The incorporation of an auxiliary separator increases NH3 concentration in the vapour mixture and enables operation of the system at reduced pressure. Further, a combined system has been designed that produces electricity and cooling effect simultaneously. The combined cycle shows gain in thermal efficiency by 6%.
{"title":"Thermodynamic analysis of Kalina cycle configurations for utilisation of geothermal energy","authors":"K. Deepak, A. Gupta","doi":"10.1504/PIE.2018.10016970","DOIUrl":"https://doi.org/10.1504/PIE.2018.10016970","url":null,"abstract":"Numerical study of Kalina cycle based power generating systems has been presented to utilise low temperature geothermal heat source. Computer codes have been developed in MATLAB to evaluate the thermal properties of working fluid. The performance of systems has been analysed considering the operating parameters that suit Indian climatic conditions. Parametric analyses of the Kalina cycle configurations have been presented showing the effect of key parameters on system performance. The efficiency of low temperature Kalina cycle system is noted to be 12.95% operating at 145oC. The cycle efficiency has improved by 2% with the incorporation of an auxiliary superheater in the system. The incorporation of an auxiliary separator increases NH3 concentration in the vapour mixture and enables operation of the system at reduced pressure. Further, a combined system has been designed that produces electricity and cooling effect simultaneously. The combined cycle shows gain in thermal efficiency by 6%.","PeriodicalId":35407,"journal":{"name":"Progress in Industrial Ecology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44841774","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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