ASME 2021 15th International Conference on Energy Sustainability最新文献

{"title":"Design and Feasibility Study of Biomass-Driven Combined Heat and Power Systems for Rural Communities","authors":"Philippe C. Schicker, Dustin Spayde, Heejin Cho","doi":"10.1115/es2021-62057","DOIUrl":"https://doi.org/10.1115/es2021-62057","url":null,"abstract":"\u0000 Meeting energy demands at crucial times can often be jeopardized by unreliable power supply from the grid. Local, on-site power generation, such as combined heat and power (CHP) systems, may safeguard against grid fluctuations and outages. CHP systems can provide more reliable and resilient energy supply to buildings and communities while it can also provide energy-efficient, cost-effective, and environmentally sustainable solutions compared to centralized power systems. With a recent increased focus on biomass as an alternative fuel source, biomass driven CHP systems have been recognized as a potential technology to bring increased efficiency of fuel utilization and environmentally sustainable solutions. Biomass as an energy source is already created through agricultural and forestry byproducts and may thus be efficient and convenient to be transported to remote rural communities. This paper presents a design and feasibility analysis of biomass (primarily wood pellets)-driven CHP systems for a rural community in the United States. A particular focus was set on rural Mississippi to investigate possible grid independent applications; however, this analysis can be scaled to rural communities across America. The viability of wood pellets (WP) as a suitable fuel source is explored by comparing it to a conventional grid-connected system. To measure viability, three performance parameters — operational cost (OC), primary energy consumption (PEC), and carbon dioxide emission (CDE) — are considered in the analysis. The results demonstrate that under the right conditions wood pellet-fueled CHP systems create economic and environmental advantages over traditional systems. The main factors in increasing the viability of bCHP systems are the appropriate sizing and operational strategies of system and the purchase price of biomass with respect to the price traditional fuels.","PeriodicalId":256237,"journal":{"name":"ASME 2021 15th International Conference on Energy Sustainability","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131377763","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}

{"title":"Investigation on Optimal EES Capacity to Maximize Self-Consumption of PV System With Existing Energy-Efficient Houses in Korea","authors":"Ruda Lee, Hyomun Lee, Dongsu Kim, Jongho Yoon","doi":"10.1115/es2021-63283","DOIUrl":"https://doi.org/10.1115/es2021-63283","url":null,"abstract":"\u0000 Battery systems are one of key factors in the effective use of renewable energy systems because self-production of electricity by renewables for self-consumption has become profitable for building applications. This study investigates the appropriate capacity of the Battery Energy Storage System (BESS) installed in all electric zero energy power houses (AEZEPHs). The AEZEPH used for this study is a high energy-efficient house, and its criteria indicates that all the electricity energy within the house is covered based on the generated electricity from on-site renewable energy systems, including that the annual net site energy use is almost equal than zero. The AEZEPHs used for this study is located in Daejeon, South Korea, and the experiment for measured data of electricity consumed and generated in the buildings is carried out for a year (i.e., Jan. through Dec. 2014). Based on the measured data, patterns of the electricity consumed by the AEZEPH and generated by an on-site renewable energy system (i.e., photovoltaic (PV) system), and the appropriate capacity of BESS is then analyzed and evaluated using the EES analysis tool, named Poly-sun. Results from this study indicate that the self-consumption can be increased up to 66% when the ESS system is installed and used during operated hours of the PV system, and the amount of received electricity during the week tends to be reduced by about two times.","PeriodicalId":256237,"journal":{"name":"ASME 2021 15th International Conference on Energy Sustainability","volume":"322 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133896151","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}

{"title":"ES2021 Front Matter","authors":"","doi":"10.1115/es2021-fm1","DOIUrl":"https://doi.org/10.1115/es2021-fm1","url":null,"abstract":"\u0000 The front matter for this proceedings is available by clicking on the PDF icon.","PeriodicalId":256237,"journal":{"name":"ASME 2021 15th International Conference on Energy Sustainability","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114521636","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}

{"title":"An Assessment of Thermal Comfort for Thermoelectric-Based Radiant Cooling Systems: A Numerical Investigation","authors":"M. Seyednezhad, H. Najafi","doi":"10.1115/es2021-63980","DOIUrl":"https://doi.org/10.1115/es2021-63980","url":null,"abstract":"\u0000 Studying various innovative cooling/heating technologies as alternatives to vapor-compression refrigeration cycles has received growing attention over the last few years. Thermoelectric (TE) systems are among the promising emerging technologies in this category. In the present paper, numerical modeling and analysis is performed using COMSOL Multiphysics to assess the performance of a thermoelectric (TE)-based radiant cooling ceiling panel on the thermal comfort in a test chamber. The system consists of a rectangular test chamber (∼ 1.2 m × 1.2 m × 1.5 m) with a ceiling panel fabricated on the center of the ceiling (0.6 m × 0.6 m × 0.002 m). Four TE modules are installed on the backside of the ceiling panel producing a cooling effect to maintain the ceiling temperature at the desired level. The lowered temperature of the ceiling panel allows heat exchange through radiation and convection. A spherical object is used to model a globe thermometer (GT) and capture the mean radiant temperature inside of the chamber. The variation of mean radiant temperature and operative temperature versus time are assessed under natural convection, and the comfort level is evaluated using the PMV method based on ASHRAE Standard 55. Design challenges, such as temperature limitation to the dew point temperature, among others, will be discussed. The result of this study provides insights regarding the expected thermal comfort from TE-based radiant cooling systems under various conditions.","PeriodicalId":256237,"journal":{"name":"ASME 2021 15th International Conference on Energy Sustainability","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122153232","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}

{"title":"A 3-Dimensional Numerical Thermal Analysis for the Configuration Effect of a Single and Double U-tube on the Borehole Performance","authors":"A. Tarrad","doi":"10.1115/es2021-60659","DOIUrl":"https://doi.org/10.1115/es2021-60659","url":null,"abstract":"\u0000 The thermal design of a borehole is the most important task in the thermal performance evaluation of a geothermal coupled heat pump system. It demands an understanding of the U-tube orientation and configuration in the borehole. The COMSOL Multiphysics 5.4 software was utilized in a 3-dimensional numerical simulation model to investigate the thermal performance of a single and double U-tube embedded in the borehole. The water was chosen as a thermal fluid carrier and circulated in the borehole heat exchanger at a mass flow rate range of (0.14–0.34) kg/s and inlet temperature of (33) °C. The configurations of the double U-tubes were assigned as a parallel flow in a cross U-tube arrangement (PFCD), a parallel flow in a parallel double U-tube in situ (PFPD), a series flow circuiting in a cross double U-tube geometry (SFCD), and a series flow in a parallel double U-tube installation (SFPD). The steady-state numerical solutions were compared at fixed borehole configuration and fixed operating conditions. Results showed that the (PFPD), (PFCD), and (SFPD) U-tube configurations have achieved a higher heat load than that of the single U-tube ones by (16–19) %, (13–16) %, and (15–18) % respectively. They produced a higher heat load than that of the series flow in a cross double U-tube (SFCD) arrangement by (30–31) %, (27–30) %, and (29–31) % for the (PFPD), (PFCD) and (SFPD) configurations respectively.","PeriodicalId":256237,"journal":{"name":"ASME 2021 15th International Conference on Energy Sustainability","volume":"307 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124226044","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}

{"title":"Waste-to-Energy Technology Suitability Assessment for the Treatment and Disposal of Medical, Industrial, and Electronic Residual Wastes in Metropolitan Manila, Philippines","authors":"Reynald Ferdinand Manegdeg, Analiza P. Rollon, F. Ballesteros, E. Magdaluyo, Louernie De Sales-Papa, E. Clemente, Emma Macapinlac, Roderaid Ibañez, R. Cervera","doi":"10.1115/es2021-63768","DOIUrl":"https://doi.org/10.1115/es2021-63768","url":null,"abstract":"\u0000 Sanitary landfill is considered as a final repository of residual wastes. However, there is a need for volume reduction to increase the lifespan of the landfill and to stabilize these wastes to prevent environmental and health hazards. A possible option to achieve these objectives is a waste-to-energy (WtE) facility that can significantly reduce residual waste volume and generate electricity at the same time. In Metropolitan Manila, Philippines, there is no existing WtE facility for the treatment of residual wastes. In this study, the technical feasibility of a WtE plant for residual wastes from medical, industrial, and electronic sectors in the Metropolis is assessed.\u0000 A multi-attribute decision analysis method was used in the selection of the most appropriate waste conversion and power generation technology for residual waste. Seven waste conversion technologies were compared according to overall efficiency, waste reduction rate, maximum capacity, reliability, lifespan, energy conversion cost, and environmental emissions. Four power generation technologies were then ranked according to efficiency, cost, footprint, work ratio, emissions, and complexity. The pyrolysis-Brayton plant was found to be the most suitable WtE plant for the identified residual waste.\u0000 To determine WtE capacity, a waste analysis characterization study was conducted in wastes from health care facilities, manufacturing plants and treatment, storage and disposal facilities in Metropolitan Manila. Representative samples were obtained from these sectors to determine the generation rate and waste composition of residual wastes. Empirical, literature, and manufacturer’s data were used to calculate for product yield, energy requirement and energy yield for each sectoral waste. Based on the energy yield estimates, the WtE power plant was simulated at capacities of 1, 3, and 10 tons per day (tpd) for the three residual waste sectors.\u0000 The 10 tpd plant simulation for medical and industrial waste resulted to electricity generation of 800 kW and 1.2 MW, at efficiencies of 23% and 24%, respectively. The 3 tpd plant simulation for electronic waste generated 200 kW at 21% efficiency. The waste reduction rate obtained for medical, industrial, and electronic wastes was 84%, 90%, and 71%, respectively.\u0000 The results of the study showed that it is technically feasible to incorporate a WtE plant in the treatment and disposal of residual wastes in Metropolitan Manila. Furthermore, in consideration of the geographical attributes of the sectoral residual waste generators, the flexibility and small footprint of the pyrolysis-Brayton set-up is suitable. Installing 1–3 tpd plants in clustered locations will lessen transportation costs and land area requirement. Moreover, it is recommended that a financial feasibility study be done on the residual WtE plant, along with an enabling environment and business plan.","PeriodicalId":256237,"journal":{"name":"ASME 2021 15th International Conference on Energy Sustainability","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125432845","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}

{"title":"Performance Considerations for Ground Source Heat Pumps in Cold Climates","authors":"R. Garber-Slaght","doi":"10.1115/es2021-64051","DOIUrl":"https://doi.org/10.1115/es2021-64051","url":null,"abstract":"\u0000 Remote, cold climates present challenges to finding safe and affordable space heating options. In Alaska, residential ground source heat pumps (GSHPs) have been gaining in popularity, even though there is little research on their long-term performance or their effect on soil temperatures. The extended heating season and cold soils of Alaska provide a harsh testing ground for GSHPs, even those designed and marketed for colder climates. The large and unbalanced heating load in cold climates creates a challenging environment for GSHPs. In 2013 the Cold Climate Housing Research Center (CCHRC) installed a GSHP at its Research and Testing Facility (RTF) in Fairbanks, Alaska. The heat pump replaced an oil-fired condensing boiler heating an office space via in-floor hydronic radiant piping. The ground heat exchanger (GHE) was installed in moisture-rich silty soils underlain with 0°C permafrost. The intent of the project was to observe and monitor the system over a 10-year period to develop a better understanding of the performance of GSHPs in sites with permafrost and to help inform future design. As of this writing, the heat pump system has been running for eight heating seasons. The efficiency in those eight heating seasons has been variable with ups and downs that have been difficult to explain. This paper seeks to understand the variability in performance as well as make recommendations for GSHP use in other cold climates.","PeriodicalId":256237,"journal":{"name":"ASME 2021 15th International Conference on Energy Sustainability","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125909694","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}

{"title":"Sensitivity Analysis of the Levelized Cost of Electricity for a Particle-Based CSP System","authors":"Luis F. González-Portillo, Kevin Albrecht, J. Sment, Brantley Mills, C. Ho","doi":"10.1115/es2021-63223","DOIUrl":"https://doi.org/10.1115/es2021-63223","url":null,"abstract":"\u0000 This study presents a sensitivity analysis of the LCOE for a particle-based system with the costs of the most current components. New models for the primary heat exchanger, thermal energy storage and tower are presented and used to establish lower and upper bounds for these three components. The rest of component costs such as particle cost, cavity cost, lift cost and balance of power are set to lower and upper bounds estimating a 25% of uncertainty. Some relevant parameters such as lift efficiency and storage thermal resistance are also included in the analysis with a 25% uncertainty. This study also includes an upgrade to the receiver model by including the wind effect in the efficiency, which was not included in previous publications. A parametric analysis shows the optimum values of solar multiple, storage hours, tower height and concentration ratio, and a probabilistic analysis provides a cumulative distribution function for a range of LCOE values. The results show that the LCOE could be below $0.06/kWh with a probability of 90%, where the highest uncertainty is on the primary heat exchanger cost.","PeriodicalId":256237,"journal":{"name":"ASME 2021 15th International Conference on Energy Sustainability","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132806325","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}

{"title":"Demonstrating SolarPILOT’s Python API Through Heliostat Optimal Aimpoint Strategy Use Case","authors":"William T. Hamilton, M. Wagner, Alexander J. Zolan","doi":"10.1115/es2021-60502","DOIUrl":"https://doi.org/10.1115/es2021-60502","url":null,"abstract":"\u0000 SolarPILOT is a software package that generates solar field layouts and characterizes the optical performance of concentrating solar power (CSP) tower systems. SolarPILOT was developed by the National Renewable Energy Laboratory (NREL) as a stand-alone desktop application but has also been incorporated into NREL’s1 System Advisor Model (SAM) in a simplified format. Prior means for user interaction with SolarPILOT have included the application’s graphical interface, the SAM routines with limited configurability, and through a built-in scripting language called “LK.” This paper presents a new, full-featured, Python-based application programmable interface (API) for SolarPILOT, which we hereafter refer to as CoPylot.\u0000 CoPylot provides access to all SolarPILOT’s capabilities to generate and characterize power tower CSP systems seamlessly through Python. Supported capabilities include (i) creating and destroying a model instance with message reporting tools; (ii) accessing and setting any SolarPILOT variable including custom land boundaries for field layouts; (iii) programmatically managing receiver and heliostat objects with varied attributes for systems with multiple receiver or heliostat types; (iv) generating, assigning, and modifying solar field layouts including the ability to set individual heliostat locations, aimpoints, soiling rates, and reflectivity levels; (v) simulating solar field performance; (vi) returning detailed results describing performance of individual heliostats, the aggregate field, and receiver flux distribution; and, (vii) exporting Python-based model instances to multiple file formats.\u0000 CoPylot enables Python users to perform detailed CSP tower analysis utilizing either the Hermite expansion technique (analytical) or the SolTrace ray-tracing engine. In addition to CoPylot’s functionality, Python users have access to the over 100,000 open-source libraries to develop, analyze, optimize, and visualize power tower CSP research. This enables CSP researchers to perform analysis that was previously not possible through SolarPILOT’s existing interfaces. This paper discusses the capabilities of CoPylot and presents a use case wherein we demonstrate optimal solar field aiming strategies.","PeriodicalId":256237,"journal":{"name":"ASME 2021 15th International Conference on Energy Sustainability","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124293509","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}

{"title":"Effect of Train Energy Consumption on the Wear of Railroad Catenary Contact Conductor","authors":"Egide Niringiyimana, Celestin Nkundineza","doi":"10.1115/es2021-62881","DOIUrl":"https://doi.org/10.1115/es2021-62881","url":null,"abstract":"\u0000 With current rise of climate change worldwide, transport industry contributes up to 21% of the world’s total Green House Gases (GHG). In addition to that developing cities are facing great changes in urbanization, population growth and environmental concerns. In these instances, railway transportation is a top contender on land transport mode to achieve sustainable mobility in fast growing cities. For railway operation, apart from wheel-rail contact, the catenary system has a very high initial investment cost as well as associated maintenance cost. It is important to monitor the damage evolution of the catenary components for developing better maintenance strategies. This study utilizes a co-simulation between the railway catenary system dynamics and electrical power flow. With reference to Addis Ababa Light Rail Transit Service (AALRTS), the power and current drawn by the running train were calculated. Then the heat losses in the conductor wire were obtained with respect to train location on the line. This procedure was followed by thermal analysis that allowed us to obtain temperature rise in the conductor. The temperature results were used as some of the inputs in the dynamic explicit finite element model of the coupled catenary and sliding pantograph. From the finite element analysis, different quantities such as contact forces and pressures, temperature rise because of friction between sliding parts, and deflections of conductor were obtained. Furthermore, the fluctuations of train loads were taken into consideration in the calculation of power consumption and hence in temperature rise. Increase in loads resulted in increase of current drawn which increases the temperature of the mating parts, which in-turn affected frictional stresses and forces. The latter were the input parameters in Archard wear model for calculating wear volume from the catenary contact conductor. It was observed that at different scenarios of train passenger loadings, the train experiences an increase in energy consumption, which results in slight increase of contact conductor wear by material removal.","PeriodicalId":256237,"journal":{"name":"ASME 2021 15th International Conference on Energy Sustainability","volume":"473 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121577808","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}