Pub Date : 2022-09-05DOI: 10.1080/14786451.2022.2118277
S. Karytsas, E. Theodoropoulou
ABSTRACT Collective action has always been a powerful driving force for social change. Thus, by assigning new responsibilities to residents and local communities, community energy initiatives can contribute to the efficient generation and distribution of energy and promote climate goals. Against this background, the present work aims to provide a unified and synthesised overview of the current state of knowledge concerning the determinants of citizens’ involvement in community energy initiatives either through volunteering in specific activities, investing, or participating in managerial positions. The determinants of citizens’ involvement in community energy initiatives were classified into attitudinal factors (environmental concerns, energy-related motives, perceived innovation adoption), contextual factors (return of investment, social recognition, interpersonal trust, spatial factors, institutional framework, policies, benefits, and barriers), and personal capabilities (demographic and socioeconomic characteristics). The findings will facilitate decision-makers and policymakers to design successful and suitable support policies, promoting active involvement and community-level investment.
{"title":"Determinants of citizens’ involvement in community energy initiatives","authors":"S. Karytsas, E. Theodoropoulou","doi":"10.1080/14786451.2022.2118277","DOIUrl":"https://doi.org/10.1080/14786451.2022.2118277","url":null,"abstract":"ABSTRACT Collective action has always been a powerful driving force for social change. Thus, by assigning new responsibilities to residents and local communities, community energy initiatives can contribute to the efficient generation and distribution of energy and promote climate goals. Against this background, the present work aims to provide a unified and synthesised overview of the current state of knowledge concerning the determinants of citizens’ involvement in community energy initiatives either through volunteering in specific activities, investing, or participating in managerial positions. The determinants of citizens’ involvement in community energy initiatives were classified into attitudinal factors (environmental concerns, energy-related motives, perceived innovation adoption), contextual factors (return of investment, social recognition, interpersonal trust, spatial factors, institutional framework, policies, benefits, and barriers), and personal capabilities (demographic and socioeconomic characteristics). The findings will facilitate decision-makers and policymakers to design successful and suitable support policies, promoting active involvement and community-level investment.","PeriodicalId":14406,"journal":{"name":"International Journal of Sustainable Energy","volume":"41 1","pages":"1836 - 1848"},"PeriodicalIF":3.1,"publicationDate":"2022-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45500995","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 : 2022-08-30DOI: 10.1080/14786451.2022.2110101
Panagiotis Kyriakopoulos, Y. Caouris, M. Souliotis, M. Santamouris
ABSTRACT The urban heat island effect for the coastal Mediterranean city of Kalamata is studied, for June to September during two consecutive years, 2019–2020. Temperature data were gathered by fixed temperature stations, placed in representative locations, covering all the major areas (urban, suburban, and rural). Results showed that the urban area is warmer than suburban and rural ones. The maximum heat island intensity was also estimated, usually achieved during nighttime and early in the morning. As there are no such data for Kalamata, this work helps to identify issues of energy consumption and human comfort. Especially for small Mediterranean cities, the work could be useful for a researcher to clarify the UHI Intensity. Detailed data are presented in the work, both for the clarification of UHI and its intensity and for the characteristics of each area, which could be useful for the development of UHI mitigation strategies, in small coastal cities.
{"title":"Characteristics of the urban heat island effect in the coastal Mediterranean city of Kalamata, Greece","authors":"Panagiotis Kyriakopoulos, Y. Caouris, M. Souliotis, M. Santamouris","doi":"10.1080/14786451.2022.2110101","DOIUrl":"https://doi.org/10.1080/14786451.2022.2110101","url":null,"abstract":"ABSTRACT The urban heat island effect for the coastal Mediterranean city of Kalamata is studied, for June to September during two consecutive years, 2019–2020. Temperature data were gathered by fixed temperature stations, placed in representative locations, covering all the major areas (urban, suburban, and rural). Results showed that the urban area is warmer than suburban and rural ones. The maximum heat island intensity was also estimated, usually achieved during nighttime and early in the morning. As there are no such data for Kalamata, this work helps to identify issues of energy consumption and human comfort. Especially for small Mediterranean cities, the work could be useful for a researcher to clarify the UHI Intensity. Detailed data are presented in the work, both for the clarification of UHI and its intensity and for the characteristics of each area, which could be useful for the development of UHI mitigation strategies, in small coastal cities.","PeriodicalId":14406,"journal":{"name":"International Journal of Sustainable Energy","volume":"41 1","pages":"1795 - 1818"},"PeriodicalIF":3.1,"publicationDate":"2022-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45596377","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 : 2022-08-13DOI: 10.1080/14786451.2022.2110100
S. Suman, A. Yadav, A. Bhushan, L. Bhaskara Rao, D. K. Rajak
ABSTRACT To meet the global demand for energy, biochar can be a substitute and a green source of energy for fossil fuels and their derivatives. Biochar has its own supremacy to meet the requirements of the energy sector and replace coking coal for metallurgical purposes, and the mitigation of CO2 emissions from the Iron and Steel industry. This study includes the characterisation and comparative study of the reduction of iron ore pellets and iron ore fines using saw dust char (SDC) as one of the biomass wastes. The results show that the reduction of iron ore fines with comparable ratios with SDC gives the maximum degree of reduction than that of iron ore pellets. Thus, SDC can play an important role in the premium quality of coking coal reserves.
{"title":"Substitution of coking coal with biochar for thermal and metallurgical utilisation","authors":"S. Suman, A. Yadav, A. Bhushan, L. Bhaskara Rao, D. K. Rajak","doi":"10.1080/14786451.2022.2110100","DOIUrl":"https://doi.org/10.1080/14786451.2022.2110100","url":null,"abstract":"ABSTRACT To meet the global demand for energy, biochar can be a substitute and a green source of energy for fossil fuels and their derivatives. Biochar has its own supremacy to meet the requirements of the energy sector and replace coking coal for metallurgical purposes, and the mitigation of CO2 emissions from the Iron and Steel industry. This study includes the characterisation and comparative study of the reduction of iron ore pellets and iron ore fines using saw dust char (SDC) as one of the biomass wastes. The results show that the reduction of iron ore fines with comparable ratios with SDC gives the maximum degree of reduction than that of iron ore pellets. Thus, SDC can play an important role in the premium quality of coking coal reserves.","PeriodicalId":14406,"journal":{"name":"International Journal of Sustainable Energy","volume":"41 1","pages":"1778 - 1794"},"PeriodicalIF":3.1,"publicationDate":"2022-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42945659","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 : 2022-08-09DOI: 10.1080/14786451.2022.2109027
Ozan Efe, Rabia Özdemir, Sena Işik, İlayda Durmuş, Ümit Ünver
ABSTRACT Currently, there is no official green or sustainable built environment evaluation system in Turkey. When a certification is required for a building or a site, various certification systems are employed. To meet the demand, the Turkish Green Building Council released an evaluation system called B.E.S.T. in 2013. In this paper, the B.E.S.T. evaluation system is introduced as well as a sample application. The evaluation of the Yalova University Engineering Faculty Building using the B.E.S.T. evaluation system is presented. Field research was conducted and evidentiary documents were gathered in preparation. The study employed both analytical and field research methodologies in this regard. As a result of the study, Yalova University Engineering Faculty Building was assessed to be eligible for the lowest level certificate, the ‘Approved’ degree of the B.E.S.T. evaluation system. Furthermore, the results achieved with the B.E.S.T. were compared to those acquired previously with other green or sustainable building evaluation systems. HIGHLIGHTS - An exemplary set of the evaluation was performed for university campus buildings with the B.E.S.T. certification system. - The conducted case study is one of the earliest samples of B.E.S.T. evaluations. - A comparison of B.E.S.T. with LEED and BREAM is provided. - The importance of establishing a local certification system has been discussed.
目前，土耳其没有官方的绿色或可持续建筑环境评估体系。当建筑物或场地需要认证时，采用各种认证系统。为了满足需求，土耳其绿色建筑委员会(Turkish Green Building Council)在2013年发布了一个名为B.E.S.T.的评估系统。本文介绍了B.E.S.T.考试评价系统，并给出了一个应用实例。介绍了运用B.E.S.T.评价体系对亚洛瓦大学工程学院大楼进行评价的方法。进行了实地调查，并收集了准备过程中的证据文件。这项研究在这方面采用了分析和实地调查两种方法。作为研究的结果，亚洛瓦大学工程学院大楼被评估为有资格获得最低级别证书，即B.E.S.T.评估系统的“批准”学位。此外，通过B.E.S.T.获得的结果与之前通过其他绿色或可持续建筑评估系统获得的结果进行了比较。亮点:一组示范性的评估是针对采用B.E.S.T.认证体系的大学校园建筑进行的。-进行的案例研究是B.E.S.T.评估的最早样本之一。-提供了B.E.S.T.与LEED和BREAM的比较。-讨论了建立地方认证制度的重要性。
{"title":"Assessment of the Yalova University Engineering Faculty Building using the B.E.S.T. green building certification system","authors":"Ozan Efe, Rabia Özdemir, Sena Işik, İlayda Durmuş, Ümit Ünver","doi":"10.1080/14786451.2022.2109027","DOIUrl":"https://doi.org/10.1080/14786451.2022.2109027","url":null,"abstract":"ABSTRACT Currently, there is no official green or sustainable built environment evaluation system in Turkey. When a certification is required for a building or a site, various certification systems are employed. To meet the demand, the Turkish Green Building Council released an evaluation system called B.E.S.T. in 2013. In this paper, the B.E.S.T. evaluation system is introduced as well as a sample application. The evaluation of the Yalova University Engineering Faculty Building using the B.E.S.T. evaluation system is presented. Field research was conducted and evidentiary documents were gathered in preparation. The study employed both analytical and field research methodologies in this regard. As a result of the study, Yalova University Engineering Faculty Building was assessed to be eligible for the lowest level certificate, the ‘Approved’ degree of the B.E.S.T. evaluation system. Furthermore, the results achieved with the B.E.S.T. were compared to those acquired previously with other green or sustainable building evaluation systems. HIGHLIGHTS - An exemplary set of the evaluation was performed for university campus buildings with the B.E.S.T. certification system. - The conducted case study is one of the earliest samples of B.E.S.T. evaluations. - A comparison of B.E.S.T. with LEED and BREAM is provided. - The importance of establishing a local certification system has been discussed.","PeriodicalId":14406,"journal":{"name":"International Journal of Sustainable Energy","volume":"41 1","pages":"1759 - 1777"},"PeriodicalIF":3.1,"publicationDate":"2022-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41464634","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 : 2022-08-06DOI: 10.1080/14786451.2022.2109026
Kokou Amega, Y. Laré, Y. Moumouni, R. Bhandari, S. Madougou
ABSTRACT Renewable energy (RE) penetration assessment and the development typical meteorological year (TMY) for five cities are considered together in this study. Thus, an integrated method is utilised encompassing RE status assessment and the Sandia method to generate the typical meteorological months of TMY. TMY and long-term data (LT) are then compared as well as a PV system of 3kWc output using TMY and LT under statistical errors. Until 2020 only 11.27% out of 360.02 MW capacity in power demand was RE (hydro and solar). LT and TMY are close for all the towns with a better closeness for Sokode. The latter predicts PV system performance within 2% of the LT in all the sites. More investment has to be put in RE sector because of its potential: 5.27 kWh/m2/day of mean solar radiation, 1238.21 mm of average annual precipitation and 7 m/s of mean wind speed at 50 m above the ground.
{"title":"Development of typical meteorological year for massive renewable energy deployment in Togo","authors":"Kokou Amega, Y. Laré, Y. Moumouni, R. Bhandari, S. Madougou","doi":"10.1080/14786451.2022.2109026","DOIUrl":"https://doi.org/10.1080/14786451.2022.2109026","url":null,"abstract":"ABSTRACT Renewable energy (RE) penetration assessment and the development typical meteorological year (TMY) for five cities are considered together in this study. Thus, an integrated method is utilised encompassing RE status assessment and the Sandia method to generate the typical meteorological months of TMY. TMY and long-term data (LT) are then compared as well as a PV system of 3kWc output using TMY and LT under statistical errors. Until 2020 only 11.27% out of 360.02 MW capacity in power demand was RE (hydro and solar). LT and TMY are close for all the towns with a better closeness for Sokode. The latter predicts PV system performance within 2% of the LT in all the sites. More investment has to be put in RE sector because of its potential: 5.27 kWh/m2/day of mean solar radiation, 1238.21 mm of average annual precipitation and 7 m/s of mean wind speed at 50 m above the ground.","PeriodicalId":14406,"journal":{"name":"International Journal of Sustainable Energy","volume":"41 1","pages":"1739 - 1758"},"PeriodicalIF":3.1,"publicationDate":"2022-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45398548","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 : 2022-07-03DOI: 10.1080/14786451.2022.2092106
I. Sotnyk, T. Kurbatova, A. Blumberga, O. Kubatko, O. Kubatko
ABSTRACT The paper investigates state policy to promote solar energy in Latvia’s and Ukraine’s households. Comparing different approaches to stimulating sectors’ development in both countries, the article evaluates the economic efficiency of solar power plants implementation based on the Levelized Cost of Electricity method and investment projects payback periods. The calculations were performed for solar power plants installed capacities ranging from 1 to 30 kW. The results revealed the fundamental differences in solar energy advancement due to the existing support mechanisms in the countries. While high feed-in tariff rates contribute to the rapid deployment of solar power plants in Ukraine’s, Latvia’s net-metering system hinders solar energy development in households. The research forms recommendations for improving policy by adjusting Ukrainian feed-in tariffs to trends in reducing solar energy costs, introducing solar energy in the Mandatory Procurement Component for Latvia, and applying preferential public financing to solar power plants construction in both states. Highlights State policy to promote solar energy in Ukraine’s and Latvia’s homes is analyzed The economic efficiency of small solar power plants is estimated for both countries Feed-in tariff in Ukraine ensures a quick payback period for solar power projects Net metering in Latvia does not provide investment attractiveness of solar plants Both countries need energy policy changes for balanced solar power development
{"title":"Solar energy development in households: ways to improve state policy in Ukraine and Latvia","authors":"I. Sotnyk, T. Kurbatova, A. Blumberga, O. Kubatko, O. Kubatko","doi":"10.1080/14786451.2022.2092106","DOIUrl":"https://doi.org/10.1080/14786451.2022.2092106","url":null,"abstract":"ABSTRACT The paper investigates state policy to promote solar energy in Latvia’s and Ukraine’s households. Comparing different approaches to stimulating sectors’ development in both countries, the article evaluates the economic efficiency of solar power plants implementation based on the Levelized Cost of Electricity method and investment projects payback periods. The calculations were performed for solar power plants installed capacities ranging from 1 to 30 kW. The results revealed the fundamental differences in solar energy advancement due to the existing support mechanisms in the countries. While high feed-in tariff rates contribute to the rapid deployment of solar power plants in Ukraine’s, Latvia’s net-metering system hinders solar energy development in households. The research forms recommendations for improving policy by adjusting Ukrainian feed-in tariffs to trends in reducing solar energy costs, introducing solar energy in the Mandatory Procurement Component for Latvia, and applying preferential public financing to solar power plants construction in both states. Highlights State policy to promote solar energy in Ukraine’s and Latvia’s homes is analyzed The economic efficiency of small solar power plants is estimated for both countries Feed-in tariff in Ukraine ensures a quick payback period for solar power projects Net metering in Latvia does not provide investment attractiveness of solar plants Both countries need energy policy changes for balanced solar power development","PeriodicalId":14406,"journal":{"name":"International Journal of Sustainable Energy","volume":"41 1","pages":"1623 - 1649"},"PeriodicalIF":3.1,"publicationDate":"2022-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48100693","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 : 2022-07-01DOI: 10.1080/14786451.2022.2095386
M. Shameem P, Muhammed Ashiq Villanthenkodath, Krishna Reddy Chittedi
ABSTRACT The re-assessment of energy – economy nexus in developing economies like India is necessitated by the constant evolution of their growth path and sectoral progression. This sectoral level examination is intended to find new evidence for the dependence of economic growth on the electricity sector in India. Using annual data of per capita real GDP and sectoral level consumption of electricity from 1971 to 2019, the combined co-integration test and Frequency domain causality approaches are employed. The estimated results show the negative impact of agricultural sector electricity consumption on growth, whereas both the Industrial and service sector enhances the production. In addition, the results of the Frequency domain causality approach support the Growth hypothesis for the study period in India, as Uni-directional causality from three sectors to economic growth were found at least in a frequency of short run to medium run. The sustainability of the growth-enhancing role of electricity consumption will depend on more sector-specific energy policies and public spending on energy infrastructure development than bland subsidies.
{"title":"Economic growth and sectoral level electricity consumption nexus in India: new evidence from combined cointegration and frequency domain causality approaches","authors":"M. Shameem P, Muhammed Ashiq Villanthenkodath, Krishna Reddy Chittedi","doi":"10.1080/14786451.2022.2095386","DOIUrl":"https://doi.org/10.1080/14786451.2022.2095386","url":null,"abstract":"ABSTRACT The re-assessment of energy – economy nexus in developing economies like India is necessitated by the constant evolution of their growth path and sectoral progression. This sectoral level examination is intended to find new evidence for the dependence of economic growth on the electricity sector in India. Using annual data of per capita real GDP and sectoral level consumption of electricity from 1971 to 2019, the combined co-integration test and Frequency domain causality approaches are employed. The estimated results show the negative impact of agricultural sector electricity consumption on growth, whereas both the Industrial and service sector enhances the production. In addition, the results of the Frequency domain causality approach support the Growth hypothesis for the study period in India, as Uni-directional causality from three sectors to economic growth were found at least in a frequency of short run to medium run. The sustainability of the growth-enhancing role of electricity consumption will depend on more sector-specific energy policies and public spending on energy infrastructure development than bland subsidies.","PeriodicalId":14406,"journal":{"name":"International Journal of Sustainable Energy","volume":"41 1","pages":"1721 - 1738"},"PeriodicalIF":3.1,"publicationDate":"2022-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43988438","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 : 2022-06-30DOI: 10.1080/14786451.2022.2092481
D. Kossyvakis, E. Hristoforou, P. Falaras, A. Kaltzoglou
ABSTRACT Photovoltaics (PV) have admittedly seen substantial advancements during the last decades. Improvements in the performance of conventional technologies as well as the emergence of cost effective alternatives facilitated its establishment as a major contributor towards the adoption of a green power production model. Nevertheless, photovoltaics still suffer from efficiency issues, mainly related to performance dependency upon operating temperature. For perovskite cells, it is also crucial to maintain temperature below a defined threshold to avoid premature degradation. Photovoltaic-thermoelectric hybridization has been recently proposed as a means of restricting excessive temperature increase, reducing recombination and improving the overall efficiency response. In this work, the performance of a hybrid photovoltaic-Peltier system is examined through an analytical modelling approach. Different thermoelectric coolers (TECs) and PV cell types have been studied. Furthermore, a sensitivity analysis has been conducted in order to identify the most critical parameters for obtaining optimum coupling between PV and TEC technologies.
{"title":"Optimum coupling of photovoltaic devices and Peltier coolers for improved performance and stability","authors":"D. Kossyvakis, E. Hristoforou, P. Falaras, A. Kaltzoglou","doi":"10.1080/14786451.2022.2092481","DOIUrl":"https://doi.org/10.1080/14786451.2022.2092481","url":null,"abstract":"ABSTRACT Photovoltaics (PV) have admittedly seen substantial advancements during the last decades. Improvements in the performance of conventional technologies as well as the emergence of cost effective alternatives facilitated its establishment as a major contributor towards the adoption of a green power production model. Nevertheless, photovoltaics still suffer from efficiency issues, mainly related to performance dependency upon operating temperature. For perovskite cells, it is also crucial to maintain temperature below a defined threshold to avoid premature degradation. Photovoltaic-thermoelectric hybridization has been recently proposed as a means of restricting excessive temperature increase, reducing recombination and improving the overall efficiency response. In this work, the performance of a hybrid photovoltaic-Peltier system is examined through an analytical modelling approach. Different thermoelectric coolers (TECs) and PV cell types have been studied. Furthermore, a sensitivity analysis has been conducted in order to identify the most critical parameters for obtaining optimum coupling between PV and TEC technologies.","PeriodicalId":14406,"journal":{"name":"International Journal of Sustainable Energy","volume":"41 1","pages":"1667 - 1693"},"PeriodicalIF":3.1,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44432964","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 : 2022-06-26DOI: 10.1080/14786451.2022.2092107
Sampath Suranjan Salins, Shiva Kumar, S. Reddy, Prasanth Sreekumaran Nair
ABSTRACT Current work mainly deals with the design and construction of a centrifugal humidifier where the humidification and cooling are due to the soaking of the packing and the dispersion of the water from packing due to the centrifugal effect. Celdek pad 7090 is used as humidifying media, and water is used as a working substance. Experiments are performed by varying the water flow rate (WFR), air velocity (AV) and rotational packing speed. Performance parameters such as a difference in dry bulb temperature (DBT), difference in relative humidity (RH), saturation efficiency, coefficient of performance (COP) and evaporation rate (ER) are evaluated. Results showed that a water flow rate of 0.6 litres per minute (L/min), rotor speed of 150 rpm and air flow rate of 5 m/s gave the maximum performance. The current unit gave a maximum cooling efficiency, COP and ER equal to 79.23%, 5.24 and 0.90 g/s, respectively. Stationary and dynamic packing conditions are assessed where it is observed that the performance of dynamic packing is higher than that of the static case at all operating ranges. Celdek packing with dynamic conditions can be suitably applied to handle huge cooling loads, which encourages sustainable energy sources and reduces environmental pollution by limiting greenhouse gas emissions.
{"title":"A novel study on a centrifugal humidifier for building cooling","authors":"Sampath Suranjan Salins, Shiva Kumar, S. Reddy, Prasanth Sreekumaran Nair","doi":"10.1080/14786451.2022.2092107","DOIUrl":"https://doi.org/10.1080/14786451.2022.2092107","url":null,"abstract":"ABSTRACT Current work mainly deals with the design and construction of a centrifugal humidifier where the humidification and cooling are due to the soaking of the packing and the dispersion of the water from packing due to the centrifugal effect. Celdek pad 7090 is used as humidifying media, and water is used as a working substance. Experiments are performed by varying the water flow rate (WFR), air velocity (AV) and rotational packing speed. Performance parameters such as a difference in dry bulb temperature (DBT), difference in relative humidity (RH), saturation efficiency, coefficient of performance (COP) and evaporation rate (ER) are evaluated. Results showed that a water flow rate of 0.6 litres per minute (L/min), rotor speed of 150 rpm and air flow rate of 5 m/s gave the maximum performance. The current unit gave a maximum cooling efficiency, COP and ER equal to 79.23%, 5.24 and 0.90 g/s, respectively. Stationary and dynamic packing conditions are assessed where it is observed that the performance of dynamic packing is higher than that of the static case at all operating ranges. Celdek packing with dynamic conditions can be suitably applied to handle huge cooling loads, which encourages sustainable energy sources and reduces environmental pollution by limiting greenhouse gas emissions.","PeriodicalId":14406,"journal":{"name":"International Journal of Sustainable Energy","volume":"41 1","pages":"1650 - 1666"},"PeriodicalIF":3.1,"publicationDate":"2022-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41835162","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 : 2022-06-26DOI: 10.1080/14786451.2022.2092869
A. Karaşan, Murat Çolak, Ayşenur Budak, I. Kaya
ABSTRACT Location selection for power plants operating with renewable energy is critical, and their locations directly affect performance and productivity. In this paper, a novel two-phased MCDM methodology based on z-fuzzy numbers with a better modelling capability by defining a confidence degree in decision-making problems is proposed to evaluate alternative locations for wind farm installation in Marmara Region, Turkey. As a result, while Çanakkale has been selected as the most suitable city, the alternative location named Biga has been determined as the most appropriate location in this city for wind farm installation. In addition, sensitivity and comparative analyses have been conducted to check the flexibility of the given decisions and verification of the weights of the criteria, respectively.
{"title":"Wind farm location determination by using a two-phased fuzzy decision-making methodology based on fused data with a real case application","authors":"A. Karaşan, Murat Çolak, Ayşenur Budak, I. Kaya","doi":"10.1080/14786451.2022.2092869","DOIUrl":"https://doi.org/10.1080/14786451.2022.2092869","url":null,"abstract":"ABSTRACT Location selection for power plants operating with renewable energy is critical, and their locations directly affect performance and productivity. In this paper, a novel two-phased MCDM methodology based on z-fuzzy numbers with a better modelling capability by defining a confidence degree in decision-making problems is proposed to evaluate alternative locations for wind farm installation in Marmara Region, Turkey. As a result, while Çanakkale has been selected as the most suitable city, the alternative location named Biga has been determined as the most appropriate location in this city for wind farm installation. In addition, sensitivity and comparative analyses have been conducted to check the flexibility of the given decisions and verification of the weights of the criteria, respectively.","PeriodicalId":14406,"journal":{"name":"International Journal of Sustainable Energy","volume":"41 1","pages":"1694 - 1720"},"PeriodicalIF":3.1,"publicationDate":"2022-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44359643","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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