Evaluation of Hybrid Distributed Generation Systems for Four Locations in Mexico

2012 ◽  
Author(s):  
L. Almanza Huerta ◽  
Moncef Krarti ◽  
A. Hernandez Guerrero
Keyword(s):  
Distributed Generation ◽  
Residential Buildings ◽  
Cost Effective ◽  
Feasibility Analysis ◽  
Thermal Loads ◽  
Small Communities ◽  
Utility Company ◽  
Available Energy ◽  
Energy Models ◽  
Energy Needs

The present work provides a feasibility analysis of a hybrid distributed generation system to meet the energy needs for residential communities in four locations in Mexico. Tuxtla Gutierrez (Oaxaca), Puerto Escondido (Oaxaca), Guaymas (Sonora) and Mexicali (Baja California Norte) were the four locations selected to assess the potential available energy resources in meeting cost-effectively and sustainably the electricity and thermal loads of small communities in Mexico. Electricity and thermal loads are obtained for the four locations by using calibrated building energy models for residential buildings in Mexico. Based on the feasibility analysis, it is found that while hybrid systems can reduce significantly CO2 emissions, they are not cost-effective to implement in all locations due to the relatively cheap electricity costs from the only federal utility company in Mexico.

Hybrid Distributed Power Generation for Apartment Building Complexes in Korea

2012 ◽  
Author(s):  
Joowook Kim ◽  
Hyunwoo Lim ◽  
Moncef Krarti
Keyword(s):  
Fuel Cell ◽  
Fossil Fuels ◽  
Residential Buildings ◽  
Residential Building ◽  
Cost Effective ◽  
Sensitivity Analyses ◽  
Thermal Loads ◽  
Apartment Building ◽  
Apartment Complex ◽  
Cost Of Energy

Korea relies significantly on imported fossil fuels to meet its energy needs. Moreover, about 50% of Korean residential buildings are apartment complexes. In this paper, the use of distributed generation (DG) technologies to serve the energy requirements for a typical Korean apartment complex is explored to reduce Korea’s dependence on fossil fuel and CO2 emissions. In particular, a series of sensitivity analyses is conducted using detailed simulation tools to determine the cost-effectiveness of DG systems to meet electrical and thermal loads of an apartment building in Daegu, Korea. The DG systems considered in the analysis include Photovoltaic (PV), Wind turbine, Microturbine, and Fuel Cell. The apartment complex is connected to the utility grid that with electricity typically generated using fossil fuels. It is found that a combination of the grid and Fuel Cell is the most cost effective approach to meet the electrical and thermal loads of the complex residential building with a cost of energy reduction of 12% compared to the grid only option.

scholarly journals Application of Distributed Electricity Generation Systems in Agricultural Greenhouses

2020 ◽  
pp. 20-26
Author(s):  
John Vourdoubas
Keyword(s):  
Distributed Generation ◽  
Electricity Generation ◽  
Fossil Fuels ◽  
Necessary Conditions ◽  
Energy Systems ◽  
Cost Effective ◽  
Environmental Benefits ◽  
Efficient Energy ◽  
Energy Needs ◽  
Additional Income

Use of distributed electricity generation systems is currently increasing due to their economic and environmental benefits. Agricultural greenhouses require heat and electricity for covering their energy needs while their annual energy requirements vary significantly. Aim of the current work is the investigation of applying various distributed electricity generation systems in greenhouses. A review of different distributed generation systems currently used in various sectors as well as in greenhouses has been implemented. Various technologies are examined utilizing either renewable energies or fossil fuels in very efficient energy systems. Most of them are mature and cost-effective having lower environmental impacts compared with traditional centralized electricity generation technologies. Their use in greenhouses results in many benefits including the creation of an additional income for the farmer, reduction of carbon emissions into the atmosphere and increasing stability of the electric grid. It is suggested that distributed electricity generation systems should be used more in greenhouses when the necessary conditions are favorable.

Validation of Building Energy Modeling Tools for a Residential Building in Brasov Area-Romania

2018 ◽  
Vol 20 (1) ◽  
pp. 43-50
Author(s):  
Lucian Cîrstolovean ◽  
Paraschiva Mizgan
Keyword(s):  
Energy Use ◽  
Residential Building ◽  
Building Energy ◽  
Valuable Insight ◽  
Thermal Loads ◽  
Building Energy Modeling ◽  
Modeling Tools ◽  
Energy Models ◽  
Energy Needs ◽  
Insight Into

Abstract A building energy model is a simulation tool which calculates the thermal loads and energy use in buildings. Building energy models provide valuable insight into energy use in buildings based on architecture, materials and thermal loads. In addition, building energy models also must account for the effects of the building’s occupants in terms of energy use. In this paper we discuss building energy models and their accuracy in predicting energy use. In particular, we focus on two types of validation methods which have been used to investigate the accuracy of building energy models and on how they account for their effects on occupants. The analyzed building is P + M located in the climatic zone 4, Sânpetru / Braşov. We have carried out a detailed and exemplary energy needs analysis using two methods of analysis.

scholarly journals Uncertainy’s Indices Assessment for Calibrated Energy Models

Energies ◽  
2019 ◽  
Vol 12 (11) ◽  
pp. 2096 ◽  
Author(s):  
Vicente Gutiérrez González ◽  
Lissette Álvarez Colmenares ◽  
Jesús Fernando López Fidalgo ◽  
Germán Ramos Ruiz ◽  
Carlos Fernández Bandera
Keyword(s):  
Distributed Generation ◽  
Thermal Inertia ◽  
Cost Effective ◽  
Building Energy ◽  
Energy Performance ◽  
Energy Performance Of Buildings ◽  
Energy Models ◽  
Effective Manner ◽  
New Generation ◽  
And Storage

Building Energy Models (BEMs) are a key element of the Energy Performance of Buildings Directive (EPBD), and they are at the basis of Energy Performance Certificates (EPCs). The main goal of BEMs is to provide information for building stakeholders; they can be a powerful market tool to increase demand for energy efficiency solutions in buildings without affecting the comfort of users, as well as providing other benefits. The next generation of BEMs should value buildings in a holistic and cost-effective manner across several complementary dimensions: envelope performances, system performances, and controlling the ability of buildings to offer flexible services to the grid by optimizing energy consumption, distributed generation, and storage. SABINA is a European project that aims to look for flexibility to the grid, targeting the most economic source possible: existing thermal inertia in buildings. In doing so, SABINA works with a new generation of BEMs that tend to mimic the thermal behavior of real buildings and therefore requires an accurate methodology to choose the model that complies with the requirements of the system. This paper details our novel extensive research on which statistical indices should be chosen in order to identify the best model offered by the calibration process developed by Fernandez et al. in a previous paper and therefore is a continuation of that work.

scholarly journals Energy Retrofitting Opportunities Using Renewable Materials—Comparative Analysis of the Current Frameworks in Bosnia-Herzegovina and Slovenia

2021 ◽  
Vol 13 (2) ◽  
pp. 603
Author(s):  
Darija Gajić ◽  
Slobodan Peulić ◽  
Tim Mavrič ◽  
Anna Sandak ◽  
Črtomir Tavzes ◽  
...  
Keyword(s):  
Developing Countries ◽  
Residential Buildings ◽  
Cost Effective ◽  
Primary Energy ◽  
Low Carbon ◽  
Resource Exploitation ◽  
Renewable Materials ◽  
Building Stock ◽  
Low Carbon Economy ◽  
Eu Member States

Sustainable approaches for retrofitting buildings for energy efficiency are becoming necessary in a time when the building sector is the largest energy consumer. Retrofitting building stock is effective for reducing global energy consumption and decreasing resource exploitation. Less developed EU member states and neighboring developing countries show reluctance towards healthy and renewable materials. Implementation of sustainable materials for energy retrofitting is slowed down due to gaps in legislation and effective strategic programs, availability of bio-based materials, lack of knowledge regarding use and maintenance of renewable products, and marketing lobbies. Use of bio-based materials in refurbishment is important due to their negative or low global warming potential (GWP), low primary energy (PEI) need for production, cost-effective benefits, and recycling/reuse potential. Role of environmentally friendly solutions and low-carbon economy growth is particularly relevant in developing countries, such as Bosnia-Herzegovina, that cannot afford innovative energy recovery systems, yet possess a significant amount of poorly managed building stock. This research aims to analyze frameworks regarding retrofitting of residential buildings in Bosnia-Herzegovina and Slovenia. The analysis tackles indirect causes, studies the legal background, and examines strategic frameworks; thus, it indicates potential barriers for implementation of recommended retrofitting solutions based on renewable materials.

Prediction of State of Charge (SOC) of Battery Electric Vehicle

2021 ◽  
Vol 104 ◽  
pp. 65-71
Author(s):  
Illa Rizianiza ◽  
Dian Mart Shoodiqin
Keyword(s):  
Fuzzy Logic ◽  
Maximum Energy ◽  
State Of Charge ◽  
Battery Management ◽  
Charge Condition ◽  
Available Energy ◽  
Energy Needs ◽  
Fuzzy Logic Method ◽  
Input Variables ◽  
Charging And Discharging Processes

Batteries have an important thing in development of energy needs. A good performance battery, will support the device it supports. The energy that can save a battery is limited, so the battery will increase its charge and discharge cycles. Incorrect charging and discharging processes can cause battery performance to decrease. Therefore battery management is needed so that the battery can reach the maximum. One aspect of battery management is setting the state which is the ratio of available energy capacitance to maximum energy capacity. One method for estimating load states is the fuzzy logic method, namely by assessing the input and output systems of prediction. Predictor of State of Charge use Mamdani Fuzzy Logic that have temperature and voltage as input variables and State of Charge as output variable. A result of prediction State of Charge battery is represented by the number of Root Mean Square Error. Battery in charge condition has 2.7 for RMSE and level of accuracy 81.5%. Whereas Battery in discharge condition has RMSE 1.5 and level of accuracy 84.7%.

Drywall Thermal Properties Exposed to High Temperatures and Fire Condition

2013 ◽  
Vol 62 (1) ◽  
Author(s):  
Md Azree Othuman Mydin
Keyword(s):  
Thermal Properties ◽  
High Temperatures ◽  
Fire Resistance ◽  
Residential Buildings ◽  
Cost Effective ◽  
Standard Fire ◽  
Performance Requirements ◽  
Cost Effective Technique ◽  
Fire Barrier ◽  
In Fire

Drywall is a widespread fire barrier used in house and general building construction. Drywall partitions and ceiling membranes are possibly the most common fire resistant construction approach employed in an extensive range of building types. The utilization of drywall board as prime fire protection of light-flame wood or steel construction is ubiquitous. Drywall board based systems are among those now broadly used, as walls or ceilings and it is principally employed as lining material in light-weight construction, which is a competent and cost effective technique of providing flexible partitioning assemblies in commercial and residential buildings. The thickness of the drywall board lining and the configuration of the framing can be flexibly changed to meet specified fire performance requirements. The use of such systems is increasing every day and there demands to be more research on their properties and behaviour. This paper will presents the properties of drywall board which will includes the assemblies and standard fire tests and the thermal properties of drywall in general and includes suggested properties of drywall by different researchers. Drywall boards shrink and crack at high temperatures, and this leads to collapse of parts of the drywall boards in fire. Fall-off of gypsum in fire affects the fire resistance of the assembly considerably, and cannot be overlooked when evaluating the fire resistance of drywall assemblies

scholarly journals Effect of Occupant Behavior and Control Systems on the Reduction of Energy Needs of Residential Buildings

2015 ◽  
Vol 78 ◽  
pp. 633-638 ◽  
Author(s):  
Giovanni Semprini ◽  
Davide Barbieri ◽  
Alessandro Gober ◽  
Francesca Zandi
Keyword(s):  
Control Systems ◽  
Residential Buildings ◽  
Occupant Behavior ◽  
Energy Needs ◽  
And Control

Technical Feasibility of Distributed Generation Network Connection

2013 ◽  
Vol 860-863 ◽  
pp. 2131-2136 ◽  
Author(s):  
Stanislav Eroshenko ◽  
Stepan A. Dmitriev ◽  
Alexandra I. Khalyasmaa
Keyword(s):  
Power Generation ◽  
Distributed Generation ◽  
Distribution Network ◽  
Feasibility Analysis ◽  
Practical Implementation ◽  
Network Systems ◽  
Technical Feasibility ◽  
Network Connection ◽  
Generation Network

This paper addresses the problems, connected with distributed generation integration into distribution network systems. Due to the large amount of technical impacts associated with distributed generation operation, the list of criteria, illustrating the feasibility of network connection is investigated. The paper also provides the detailed description and practical implementation results of multi-criteria optimization tool, developed for siting and sizing of small-scaled power generation with subsequent technical feasibility analysis.

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