Pub Date : 2018-03-01DOI: 10.1109/ICGEA.2018.8356271
Aratrika Ghosh, Ganta Upendar, K. C. Ghanta, S. Dutta, Sohini Guha Thakurta, J. Chakrabarty
In the present study bioremediation of thiocyanate from coke-oven wastewater using a cyanobacterial strain Leptolyngbya foveolauram was done. Kinetic study for the bioremediation of thiocyanate was done by varying the initial concentration of thiocyanate from 10 to 250 mg/L while other parameters were kept constant as inoculum size of 10% and pH 10. Concentrations of biomolecules viz., carbohydrate, protein and lipid in the cyanobacterial strain are also measured during remediation of thiocyanate. Results revealed that 100% and 78.20% of thiocyanate has been remediated in synthetic wastewater with initial thiocyanate concentration of 10 and 50 mg/L respectively. Fatty Acid Methyl Ester (FAME) analysis was studied and compared with native strain and thiocyanate treated one.
{"title":"Bioremediation of Thiocyanate from Coke-Oven Wastewater Using a Novel Cyanobacterial Strain and Synthesis of Biomolecules","authors":"Aratrika Ghosh, Ganta Upendar, K. C. Ghanta, S. Dutta, Sohini Guha Thakurta, J. Chakrabarty","doi":"10.1109/ICGEA.2018.8356271","DOIUrl":"https://doi.org/10.1109/ICGEA.2018.8356271","url":null,"abstract":"In the present study bioremediation of thiocyanate from coke-oven wastewater using a cyanobacterial strain Leptolyngbya foveolauram was done. Kinetic study for the bioremediation of thiocyanate was done by varying the initial concentration of thiocyanate from 10 to 250 mg/L while other parameters were kept constant as inoculum size of 10% and pH 10. Concentrations of biomolecules viz., carbohydrate, protein and lipid in the cyanobacterial strain are also measured during remediation of thiocyanate. Results revealed that 100% and 78.20% of thiocyanate has been remediated in synthetic wastewater with initial thiocyanate concentration of 10 and 50 mg/L respectively. Fatty Acid Methyl Ester (FAME) analysis was studied and compared with native strain and thiocyanate treated one.","PeriodicalId":6536,"journal":{"name":"2018 2nd International Conference on Green Energy and Applications (ICGEA)","volume":"77 1","pages":"250-253"},"PeriodicalIF":0.0,"publicationDate":"2018-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79504978","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 : 2018-03-01DOI: 10.1109/ICGEA.2018.8356306
Jesna Mohammed, K. Roy, A. Mohizin
The demand and application of cryogenic fluids is constantly increasing. Production of these cryogenic fluids is an energy intensive process. Chilldown of the system prior to its operation is inevitable for the safe and manageable performance. This is accompanied with a large amount of cryogenic fluid loss that increases with the increase in chilldown time taken. This process, if done poorly, will cause wastage of cryogen which requires a lot of energy to produce. Therefore, saving cryogen in chilldown can save energy. In this study, effect of geometry and fluid flow pattern on chilldown characteristics of transfer lines has been investigated into. Comparative experimental study was conducted on straight and helically coiled transfer lines with 3 different orientation namely, horizontal, vertically upward and downward under continuous flow. It was found that helical coils could be chilled down faster. The comparison of chilldown time with continuous flow in straight and helically coiled tube was conducted using CFD simulation where, the pulsed flow pattern was identified to be more efficient for higher time period.
{"title":"Experimental Investigation on Cryogen Saving through Helical Transfer Lines With Varied Orientation","authors":"Jesna Mohammed, K. Roy, A. Mohizin","doi":"10.1109/ICGEA.2018.8356306","DOIUrl":"https://doi.org/10.1109/ICGEA.2018.8356306","url":null,"abstract":"The demand and application of cryogenic fluids is constantly increasing. Production of these cryogenic fluids is an energy intensive process. Chilldown of the system prior to its operation is inevitable for the safe and manageable performance. This is accompanied with a large amount of cryogenic fluid loss that increases with the increase in chilldown time taken. This process, if done poorly, will cause wastage of cryogen which requires a lot of energy to produce. Therefore, saving cryogen in chilldown can save energy. In this study, effect of geometry and fluid flow pattern on chilldown characteristics of transfer lines has been investigated into. Comparative experimental study was conducted on straight and helically coiled transfer lines with 3 different orientation namely, horizontal, vertically upward and downward under continuous flow. It was found that helical coils could be chilled down faster. The comparison of chilldown time with continuous flow in straight and helically coiled tube was conducted using CFD simulation where, the pulsed flow pattern was identified to be more efficient for higher time period.","PeriodicalId":6536,"journal":{"name":"2018 2nd International Conference on Green Energy and Applications (ICGEA)","volume":"128 1","pages":"220-224"},"PeriodicalIF":0.0,"publicationDate":"2018-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82598602","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 : 2018-03-01DOI: 10.1109/ICGEA.2018.8356307
Naftalin Winanti, B. Halimi, A. Purwadi, N. Heryana
As one of the largest archipelago countries in the world, Indonesia is still faced to electrification problems due to geographical reasons. The implementation of micro grid systems for dedicated areas will be one solution to deal with the electrical energy availability problem especially in some remote communities where located far from the main grid such as underdeveloped areas, remote island as well as some outer islands. Considering this problem, Indonesian government has launched Pre-electrification Program in year 2017. The main goal of this program is to increase the electrification ratio by providing Energy Saving Solar Lamps (Lampu Tenaga Surya Hemat Energi – LTSHE). To endorse this program, a study and design of solar-based energy saving lamp is presented in this paper. The special purpose of this study is to develop LTSHE prototype as part of contribution to national electrification ratio fulfilment program and to support government activity related to small grid development by utilizing the proper design and size for a more reliable solution. The long-term goal and objective to be achieved are the fulfilment of primary energy by utilizing new renewable energy resources by 23% by 2025. This paper will also show that the government equipment specification of LTSHE is not applicable in some area with low solar irradiance in Indonesia, in this case, North Sumatera region.
印度尼西亚作为世界上最大的群岛国家之一，由于地理原因，仍然面临着电气化问题。在专用地区实施微电网系统将是解决电力供应问题的一种解决方案，特别是在一些远离主电网的偏远社区，如欠发达地区、偏远岛屿和一些外岛。考虑到这个问题，印尼政府在2017年推出了预电气化计划。该项目的主要目标是通过提供节能太阳能灯(Lampu Tenaga Surya Hemat Energi - LTSHE)来提高电气化率。为此，本文对太阳能节能灯进行了研究和设计。本研究的特殊目的是开发LTSHE原型，作为对国家电气化比率实现计划的一部分贡献，并通过利用适当的设计和尺寸来提供更可靠的解决方案，支持与小型电网发展相关的政府活动。要实现的长期目标和目标是到2025年利用新的可再生能源23%来实现一次能源。本文还将说明LTSHE的政府设备规范在印度尼西亚一些太阳辐照度较低的地区并不适用，在本例中为北苏门答腊地区。
{"title":"Study and Design of Energy-Saving Solar Lamp for Rural Area in Indonesia","authors":"Naftalin Winanti, B. Halimi, A. Purwadi, N. Heryana","doi":"10.1109/ICGEA.2018.8356307","DOIUrl":"https://doi.org/10.1109/ICGEA.2018.8356307","url":null,"abstract":"As one of the largest archipelago countries in the world, Indonesia is still faced to electrification problems due to geographical reasons. The implementation of micro grid systems for dedicated areas will be one solution to deal with the electrical energy availability problem especially in some remote communities where located far from the main grid such as underdeveloped areas, remote island as well as some outer islands. Considering this problem, Indonesian government has launched Pre-electrification Program in year 2017. The main goal of this program is to increase the electrification ratio by providing Energy Saving Solar Lamps (Lampu Tenaga Surya Hemat Energi – LTSHE). To endorse this program, a study and design of solar-based energy saving lamp is presented in this paper. The special purpose of this study is to develop LTSHE prototype as part of contribution to national electrification ratio fulfilment program and to support government activity related to small grid development by utilizing the proper design and size for a more reliable solution. The long-term goal and objective to be achieved are the fulfilment of primary energy by utilizing new renewable energy resources by 23% by 2025. This paper will also show that the government equipment specification of LTSHE is not applicable in some area with low solar irradiance in Indonesia, in this case, North Sumatera region.","PeriodicalId":6536,"journal":{"name":"2018 2nd International Conference on Green Energy and Applications (ICGEA)","volume":"35 1","pages":"98-102"},"PeriodicalIF":0.0,"publicationDate":"2018-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77278614","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 : 2018-03-01DOI: 10.1109/ICGEA.2018.8356268
A. Troost, J. Musango, A. Brent
Across sub-Saharan Africa, 590 million people continue to live without electricity, 80% of which live in rural areas. Renewable energy mini-grids are increasingly regarded as viable approaches to rural electrification. However, despite this potential, mini-grid energy service companies (ESCOs) in sub-Saharan Africa are faced with financing challenges, which emanate from unattractive risk-return profiles. Thus, this study sought to explore the potential of strategic investment as a way to attract additional funding to mini-grid ESCOs in order to advance the sector to a commercially viable phase. Indepth interviews were conducted with executive managers of mini-grid ESCOs and potential strategic investors. It was found that there is a need for strategic investment among mini-grid ESCOs. The study contributes to the evolving best practices of viable mini-grid business models, by recommending that mini-grid ESCOs should build competencies in customer relationship management, rural distribution practices and the extrapolation of rural households’ uptake of electricity and electricity dependent products and services from consumption data to commercial applications. Indeed, the study has shown that potential strategic investors attach value to these focus areas, with the implication that when mini-grid ESCOs can demonstrate these competencies successfully, the probability of successfully attracting strategic investment would increase. Considering these implications, the study offers a contribution to the development of pathways to attract investment to mini-grid ESCOs, the achievement of which will facilitate energy leapfrogging in the region.
{"title":"Strategic Investment to Increase Access to Finance Among Mini-Grid ESCOs : Perspectives from sub-Saharan Africa","authors":"A. Troost, J. Musango, A. Brent","doi":"10.1109/ICGEA.2018.8356268","DOIUrl":"https://doi.org/10.1109/ICGEA.2018.8356268","url":null,"abstract":"Across sub-Saharan Africa, 590 million people continue to live without electricity, 80% of which live in rural areas. Renewable energy mini-grids are increasingly regarded as viable approaches to rural electrification. However, despite this potential, mini-grid energy service companies (ESCOs) in sub-Saharan Africa are faced with financing challenges, which emanate from unattractive risk-return profiles. Thus, this study sought to explore the potential of strategic investment as a way to attract additional funding to mini-grid ESCOs in order to advance the sector to a commercially viable phase. Indepth interviews were conducted with executive managers of mini-grid ESCOs and potential strategic investors. It was found that there is a need for strategic investment among mini-grid ESCOs. The study contributes to the evolving best practices of viable mini-grid business models, by recommending that mini-grid ESCOs should build competencies in customer relationship management, rural distribution practices and the extrapolation of rural households’ uptake of electricity and electricity dependent products and services from consumption data to commercial applications. Indeed, the study has shown that potential strategic investors attach value to these focus areas, with the implication that when mini-grid ESCOs can demonstrate these competencies successfully, the probability of successfully attracting strategic investment would increase. Considering these implications, the study offers a contribution to the development of pathways to attract investment to mini-grid ESCOs, the achievement of which will facilitate energy leapfrogging in the region.","PeriodicalId":6536,"journal":{"name":"2018 2nd International Conference on Green Energy and Applications (ICGEA)","volume":"9 1","pages":"29-37"},"PeriodicalIF":0.0,"publicationDate":"2018-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76485091","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 : 2018-03-01DOI: 10.1109/ICGEA.2018.8356314
Mario Palacio, Mauricio Carmona
In this paper, temperature stabilization effect provided by PCM containers integrated into a flat plate solar collector during its daytime operation is experimentally analyzed. For this purpose, it was designed and constructed experimental set up with a prototype of flat plate solar collector with phase change material containers located under the absorber plate. Experimental tests were performed under outdoor conditions with and without phase change material, from 7:00 am to 7:00 pm. Temperatures of the ambient, absorber plate, water outlet, water inlet and PCM are compared with the behavior of solar radiation for 3 different cases. It was observed that using PCM reduce the fluctuation in water outlet temperature and absorber plate temperature due to solar radiation reduction, in fact, temperature variations were 55 % and 49.8 % lower compared with test without PCM, respectively. In order to compare results under different solar radiation conditions with and without PCM, conclusions were obtained by comparing these temperatures in proportion to the reduction of solar radiation.
{"title":"Experimental Evaluation of a Latent Heat Thermal Storage Unit Integrated Into a Flat Plate Solar Collector as Temperature Stabilizer","authors":"Mario Palacio, Mauricio Carmona","doi":"10.1109/ICGEA.2018.8356314","DOIUrl":"https://doi.org/10.1109/ICGEA.2018.8356314","url":null,"abstract":"In this paper, temperature stabilization effect provided by PCM containers integrated into a flat plate solar collector during its daytime operation is experimentally analyzed. For this purpose, it was designed and constructed experimental set up with a prototype of flat plate solar collector with phase change material containers located under the absorber plate. Experimental tests were performed under outdoor conditions with and without phase change material, from 7:00 am to 7:00 pm. Temperatures of the ambient, absorber plate, water outlet, water inlet and PCM are compared with the behavior of solar radiation for 3 different cases. It was observed that using PCM reduce the fluctuation in water outlet temperature and absorber plate temperature due to solar radiation reduction, in fact, temperature variations were 55 % and 49.8 % lower compared with test without PCM, respectively. In order to compare results under different solar radiation conditions with and without PCM, conclusions were obtained by comparing these temperatures in proportion to the reduction of solar radiation.","PeriodicalId":6536,"journal":{"name":"2018 2nd International Conference on Green Energy and Applications (ICGEA)","volume":"218 1","pages":"83-87"},"PeriodicalIF":0.0,"publicationDate":"2018-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85540274","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 : 2018-03-01DOI: 10.1109/ICGEA.2018.8356277
Azhar Ul-Haq, A. Perwaiz, M. Azhar, Saif Ullah Awan
An undesirable jack-up of uneven EV charging load is feared to arouse various technical issues in the existing illsuited power system. In this wake, assessment of total harmonic distortion (THD) in low voltage distribution network is considered of prime significance in order to better revamp the system. This paper deals with assessment of voltage THD appeared due to single-phase EV charging in an urban and rural distribution networks. This paper focuses on evaluation of total harmonic distortion caused by electric vehicle charging in a low voltage residential distribution system. The sample test network is based on the test-bench CIGRE low-voltage distribution system. Simulations are conducted to compute voltage THD with different current harmonic spectrum. The obtained results suggest a permissible diffusion of EVs that may be supported by the power system without the concern of harmonic contamination.
{"title":"Harmonic Distortion in Distribution System Due to Single-Phase Electric Vehicle Charging","authors":"Azhar Ul-Haq, A. Perwaiz, M. Azhar, Saif Ullah Awan","doi":"10.1109/ICGEA.2018.8356277","DOIUrl":"https://doi.org/10.1109/ICGEA.2018.8356277","url":null,"abstract":"An undesirable jack-up of uneven EV charging load is feared to arouse various technical issues in the existing illsuited power system. In this wake, assessment of total harmonic distortion (THD) in low voltage distribution network is considered of prime significance in order to better revamp the system. This paper deals with assessment of voltage THD appeared due to single-phase EV charging in an urban and rural distribution networks. This paper focuses on evaluation of total harmonic distortion caused by electric vehicle charging in a low voltage residential distribution system. The sample test network is based on the test-bench CIGRE low-voltage distribution system. Simulations are conducted to compute voltage THD with different current harmonic spectrum. The obtained results suggest a permissible diffusion of EVs that may be supported by the power system without the concern of harmonic contamination.","PeriodicalId":6536,"journal":{"name":"2018 2nd International Conference on Green Energy and Applications (ICGEA)","volume":"17 1","pages":"205-209"},"PeriodicalIF":0.0,"publicationDate":"2018-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87847808","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 : 2018-03-01DOI: 10.1109/ICGEA.2018.8356305
Boya Jiang, Qianning Zhang, S. Lau
With the four-generation “future house” as an example, the research first introduces the development of the modern green construction technology, analyzes the green construction systems, technical characteristics, product advantages and future developments under the modern industrialized construction mode, expounds the importance of modern green construction technology in housing industrialization in China, and points out the future trend of housing industrialization.
{"title":"Energy Conservation-Oriented Residential Prefabs for Sustainability in Nanjing","authors":"Boya Jiang, Qianning Zhang, S. Lau","doi":"10.1109/ICGEA.2018.8356305","DOIUrl":"https://doi.org/10.1109/ICGEA.2018.8356305","url":null,"abstract":"With the four-generation “future house” as an example, the research first introduces the development of the modern green construction technology, analyzes the green construction systems, technical characteristics, product advantages and future developments under the modern industrialized construction mode, expounds the importance of modern green construction technology in housing industrialization in China, and points out the future trend of housing industrialization.","PeriodicalId":6536,"journal":{"name":"2018 2nd International Conference on Green Energy and Applications (ICGEA)","volume":"7 1","pages":"156-160"},"PeriodicalIF":0.0,"publicationDate":"2018-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84815118","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 : 2018-03-01DOI: 10.1109/ICGEA.2018.8356309
Y. Cui, P. Song, X. Wang, W. Yang, H. Liu, H. Liu
Compared with conventional synchronous generators, wind turbines are connected to power grid through converters. Active power response and grid frequency are decoupled. Wind turbines do not have the ability of active frequency support. With the rapid development of new energy power in China, wind power penetration continues to increase. New challenges of gird frequency stability occur. Virtual synchronous generator (VSG) Demonstration Project is built in Zhangbei Wind, Photovoltaic and Energy Storage Station by State Grid. Through the VSG technology reform of wind turbines, active frequency regulation ability is possessed. Reserve capacity and rotor inertia control technical routes of wind power virtual synchronous generator (WPVSG) are introduced. A field test method is presented. The method is based on analog frequency disturbance applied to the secondary side. Field test is conducted. The results show that WPVSG has ability of active frequency regulation support. Two kinds of control methods have their own characteristics.
{"title":"Wind Power Virtual Synchronous Generator Frequency Regulation Characteristics Field Test and Analysis","authors":"Y. Cui, P. Song, X. Wang, W. Yang, H. Liu, H. Liu","doi":"10.1109/ICGEA.2018.8356309","DOIUrl":"https://doi.org/10.1109/ICGEA.2018.8356309","url":null,"abstract":"Compared with conventional synchronous generators, wind turbines are connected to power grid through converters. Active power response and grid frequency are decoupled. Wind turbines do not have the ability of active frequency support. With the rapid development of new energy power in China, wind power penetration continues to increase. New challenges of gird frequency stability occur. Virtual synchronous generator (VSG) Demonstration Project is built in Zhangbei Wind, Photovoltaic and Energy Storage Station by State Grid. Through the VSG technology reform of wind turbines, active frequency regulation ability is possessed. Reserve capacity and rotor inertia control technical routes of wind power virtual synchronous generator (WPVSG) are introduced. A field test method is presented. The method is based on analog frequency disturbance applied to the secondary side. Field test is conducted. The results show that WPVSG has ability of active frequency regulation support. Two kinds of control methods have their own characteristics.","PeriodicalId":6536,"journal":{"name":"2018 2nd International Conference on Green Energy and Applications (ICGEA)","volume":"102 1","pages":"193-196"},"PeriodicalIF":0.0,"publicationDate":"2018-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79515328","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 : 2018-03-01DOI: 10.1109/ICGEA.2018.8356293
W. Czekała, D. Wojcieszak, A. Lewicki, D. Janczak, H. Waliszewska, A. Smurzynska
The increase in energy demand creates a need to look for new ways of energy production, as fossil fuel resources are limited and nuclear energy is not always well perceived, thus new directions for fuel production are being sought for. One of them is agricultural biogas obtained in the process of methane fermentation, the by-product of which is digested pulp (digestate), having a fertilizing potential, often underestimated. The purpose of the following study is to determine the fertilizer value of digested pulp coming from a Polish biogas plant. The obtained results of digestate chemical analyzes and available information on mineral fertilizers enabled to estimate the value of digestate from the analyzed biogas plant. Based on the adopted methodology, it has been calculated that the value of the analyzed digestate is 24,9 PLN. It should be emphasized, however, that there are more nutrients in the digestate than just the analyzed nitrogen, phosphorus and potassium and therefore its value increases.
{"title":"Nutrient Value of Digestate from Agricultural Biogas Plant in Poland","authors":"W. Czekała, D. Wojcieszak, A. Lewicki, D. Janczak, H. Waliszewska, A. Smurzynska","doi":"10.1109/ICGEA.2018.8356293","DOIUrl":"https://doi.org/10.1109/ICGEA.2018.8356293","url":null,"abstract":"The increase in energy demand creates a need to look for new ways of energy production, as fossil fuel resources are limited and nuclear energy is not always well perceived, thus new directions for fuel production are being sought for. One of them is agricultural biogas obtained in the process of methane fermentation, the by-product of which is digested pulp (digestate), having a fertilizing potential, often underestimated. The purpose of the following study is to determine the fertilizer value of digested pulp coming from a Polish biogas plant. The obtained results of digestate chemical analyzes and available information on mineral fertilizers enabled to estimate the value of digestate from the analyzed biogas plant. Based on the adopted methodology, it has been calculated that the value of the analyzed digestate is 24,9 PLN. It should be emphasized, however, that there are more nutrients in the digestate than just the analyzed nitrogen, phosphorus and potassium and therefore its value increases.","PeriodicalId":6536,"journal":{"name":"2018 2nd International Conference on Green Energy and Applications (ICGEA)","volume":"60 1","pages":"10-13"},"PeriodicalIF":0.0,"publicationDate":"2018-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90723905","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 : 2018-03-01DOI: 10.1109/ICGEA.2018.8356313
Siti Rahmah Omar, J. Sohaili
The urban riparian in Malaysia is also known as river reserve. Section 62 of the National Land Code 1965 has stipulated that the State Authority has the power to reserve state land for any public purposes, including river reserves. Nonetheless, its criteria are determined by the width of the reserved land and are highlighted only for bank stabilization, biodiversity, and water quality purposes. Additionally, some studies have proven that vegetated urban riparian promotes thermal reduction, in comparison to those covered with mere hard surfaces. As such, this study looked into the effect of urban riparian structure upon local thermal environment so as to gain an overview of the possible form of heat transfer occurrence. With that, this study investigated two varied formations of river reserve located side-by-side, which is bound by the same river in Johor, Malaysia. Despite of the low-albedo materials, the developed river reserve displayed somewhat lower air temperature, when compared to undeveloped river reserve area. In addition, ambient air temperature and relative humidity of both the investigated sites were linked to some factors, such as shading and wind movement. In fact, vegetation vertical clearance that caused wind flow obstruction could have been influential as well. Therefore, the effect of vegetation structure has to be comprehensively understood. With that, it is possible to determine the multiple functions of a river reserve, especially after implementing several passive cooling strategies within the area.
{"title":"The Potential of Urban River Reserve in Modifying Outdoor Thermal Condition : A Case Study in Johor, Malaysia","authors":"Siti Rahmah Omar, J. Sohaili","doi":"10.1109/ICGEA.2018.8356313","DOIUrl":"https://doi.org/10.1109/ICGEA.2018.8356313","url":null,"abstract":"The urban riparian in Malaysia is also known as river reserve. Section 62 of the National Land Code 1965 has stipulated that the State Authority has the power to reserve state land for any public purposes, including river reserves. Nonetheless, its criteria are determined by the width of the reserved land and are highlighted only for bank stabilization, biodiversity, and water quality purposes. Additionally, some studies have proven that vegetated urban riparian promotes thermal reduction, in comparison to those covered with mere hard surfaces. As such, this study looked into the effect of urban riparian structure upon local thermal environment so as to gain an overview of the possible form of heat transfer occurrence. With that, this study investigated two varied formations of river reserve located side-by-side, which is bound by the same river in Johor, Malaysia. Despite of the low-albedo materials, the developed river reserve displayed somewhat lower air temperature, when compared to undeveloped river reserve area. In addition, ambient air temperature and relative humidity of both the investigated sites were linked to some factors, such as shading and wind movement. In fact, vegetation vertical clearance that caused wind flow obstruction could have been influential as well. Therefore, the effect of vegetation structure has to be comprehensively understood. With that, it is possible to determine the multiple functions of a river reserve, especially after implementing several passive cooling strategies within the area.","PeriodicalId":6536,"journal":{"name":"2018 2nd International Conference on Green Energy and Applications (ICGEA)","volume":"2011 1","pages":"45-50"},"PeriodicalIF":0.0,"publicationDate":"2018-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87824317","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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