Decision support for evaluating energy demand in vinification processes using fuzzy sets theory

2006 ◽  
Vol 17 (4) ◽  
pp. 4-18 ◽  
Author(s):  
N Musee ◽  
L Lorenzen ◽  
C Aldrich
Keyword(s):  
Fuzzy Logic ◽  
Energy Consumption ◽  
Energy Demand ◽  
Renewable Energy Sources ◽  
Current Trend ◽  
High Energy ◽  
Production Costs ◽  
Wine Industry ◽  
Process Industries ◽  
Industrial Growth

The current trend associated with high energy demand, depletion of energy reserves and low potential of renewable energy sources linked with strong industrial growth, is increasingly becoming unsustainable. As a result, production costs have increased considerably in the process industries, mainly owing to skewed energy demand and supply realities. A feasible strategy for meeting these challenges is to reduce energy consumption per unit throughput. However, to obtain a workable solution, decision makers may have to deal with energy management variables that are ambiguous, which makes solving the energy minimization problem with conventional numerical approaches very difficult. In this paper, we consider an alternative approach based on fuzzy logic to qualitatively evaluate the energy demand associated with an industrial cooling process. The model was formulated based on Mamdani fuzzy logic inferencing and implemented in MATLAB 6.5 via the Fuzzy Logic toolbox. The energy demands pertaining to specific variables were independently estimated, followed by an estimate of the overall energy consumption. The procedure is demonstrated via a case study of cooling at the maceration stage of a vinification process in the wine industry.

scholarly journals Analysis of Energy System in Norway with Focus on Energy Consumption Prediction

2017 ◽  
Vol 9 (1) ◽  
pp. 5-14 ◽  
Author(s):  
Maryam Hamlehdar ◽  
Alireza Aslani
Keyword(s):  
Energy Consumption ◽  
Energy Demand ◽  
Fossil Fuels ◽  
Renewable Energy Sources ◽  
Electricity Consumption ◽  
Energy System ◽  
High Energy ◽  
Regression Result ◽  
Industry Growth ◽  
The Status

Abstract Today, the fossil fuels have dominant share of energy supply in order to respond to the high energy demand in the world. Norway is one of the countries with rich sources of fossil fuels and renewable energy sources. The current work is to investigate on the status of energy demand in Norway. First, energy and electricity consumption in various sectors, including industrial, residential are calculated. Then, energy demand in Norway is forecasted by using available tools. After that, the relationship between energy consumption in Norway with Basic economics parameters such as GDP, population and industry growth rate has determined by using linear regression model. Finally, the regression result shows a low correlation between variables.

scholarly journals Optimization of Biodiesel Transesterification using ANN and Fuzzy Logic

2019 ◽  
Vol 9 (2) ◽  
pp. 718-723
Keyword(s):  
Fuzzy Logic ◽  
Energy Demand ◽  
Renewable Energy Sources ◽  
Maximum Yield ◽  
High Energy ◽  
Optimization Techniques ◽  
Optimum Conditions ◽  
Molar Ratios ◽  
Experimental Yield ◽  
Astm D6751

The high energy demand in domestic sector coupled with pollution brought by extensive exploitation of conventional fuels in an industrialized world makes it mandatory to boost renewable energy sources having lesser environmental impact than non-renewable ones. In this regard bio-diesel can be considered as a more reliable resource of energy that can be used readily in the existing engines. Biodiesel is formed by transesterification reaction of alcohol and triglycerides under a catalyst. In this paper, Bio-diesel is produced from karanja (pongamia pinnata) oil in sono reactor at varied methanol-oil ratios and varied catalyst ratios. Yield was found at different molar ratios of methanol:oil (6:1; 4.5:1; 3:1), different KOH concentrations (2.0 wt %; 1.5 wt %; 1.0 wt %) and different times (15 min; 30 min; 45 min; 60 min). The biodiesel thus obtained conformed to ASTM D6751 standards. The optimum conditions of maximum yield are determined at 50o C temperature, 45 min reaction time, 4.5:1 methanol:oil ratio and 1.5% of KOH. The results obtained are well in accord with the literature. Also ultrasonic vibration used for production of biodiesel proves to be promising technique. The biodiesel thus produced is analyzed using various tests to obtain its properties. Further optimization techniques namely Artificial Neural Network and Fuzzy Logic have been applied for modeling the reaction and finding the optimum yield at different conditions. The yield predicted by using ANN and Fuzzy logic was compared with the experimental yield. The ANN and Fuzzy can precisely calculate as per the experimental data with R2 = 0.998 and R2 = 0.995, respectively.

scholarly journals Towards A Sustainable Green Design for Next-Generation Networks

2021 ◽  
Author(s):  
Isiaka Ajewale Alimi ◽  
Romilkumar K. Patel ◽  
Akeem O. Mufutau ◽  
Nelson J. Muga ◽  
Armando N. Pinto ◽  
...  
Keyword(s):  
Energy Efficiency ◽  
Wireless Networks ◽  
Energy Consumption ◽  
Energy Demand ◽  
Renewable Energy Sources ◽  
Carbon Dioxide Emission ◽  
Green Energy ◽  
Green Communications ◽  
Resource Allocation Algorithm ◽  
Allocation Algorithm

Abstract The evolution in the Information and Communications Technologies industry results in excessive energy consumption and carbon dioxide emission in the wireless networks. In this context, energy efficiency in mobile networks has been attracting considerable attention as green communications and operational expenditures reduction depend on it. Although the Internet of Things is to be supported by devices that are low-energy consuming, the power consumption of the huge number to be connected for several applications and services demand significant attention. To offer insights into green communications, this paper reviews various energy efficiency improvement techniques. Also, we consider a hybrid model in which the main grid power and dynamically harvested green energy from renewable energy sources can be leveraged to support the energy demand of the radio access network. In this regard, we reformulate the energy consumption model and consider an energy-efficient power allocation algorithm for green energy optimization. Numerical results show that with resource allocation algorithm exploitation, the energy efficiency can be enhanced. Besides, the amount of the grid energy consumption can be considerably minimized, resulting in the greenhouse gas emissions reduction in the wireless networks.

scholarly journals Life Cycle Cost of Solar Biomass Hybrid Dryer Systems for Cashew Drying of Nuts in India

2015 ◽  
Vol 15 (1) ◽  
pp. 22-33 ◽  
Author(s):  
Saravanan Dhanushkodi ◽  
Vincent H. Wilson ◽  
Kumarasamy Sudhakar
Keyword(s):  
Renewable Energy ◽  
Energy Consumption ◽  
Life Cycle Cost ◽  
Renewable Energy Sources ◽  
Cost Benefit ◽  
High Energy ◽  
Economic Feasibility ◽  
Small Scale ◽  
Cashew Nut ◽  
The Cost

Abstract Cashew nut farming in India is mostly carried out in small and marginal holdings. Energy consumption in the small scale cashew nut processing industry is very high and is mainly due to the high energy consumption of the drying process. The drying operation provides a lot of scope for energy saving and substitutions of other renewable energy sources. Renewable energy-based drying systems with loading capacity of 40 kg were proposed for application in small scale cashew nut processing industries. The main objective of this work is to perform economic feasibility of substituting solar, biomass and hybrid dryer in place of conventional steam drying for cashew drying. Four economic indicators were used to assess the feasibility of three renewable based drying technologies. The payback time was 1.58 yr. for solar, 1.32 for biomass and 1.99 for the hybrid drying system, whereas as the cost-benefit estimates were 5.23 for solar, 4.15 for biomass and 3.32 for the hybrid system. It was found that it is of paramount importance to develop solar biomass hybrid dryer for small scale processing industries.

scholarly journals ENERGY DEMAND REDUCTION TO ENSURE THERMAL COMFORT IN BUILDINGS USING ALUMINIUM FOAM

2016 ◽  
Vol 22 (4) ◽  
pp. 271 ◽  
Author(s):  
Jaroslav Jerz ◽  
František Simančík ◽  
Jaroslav Kováčik ◽  
Peter Oslanec Sr.
Keyword(s):  
Thermal Comfort ◽  
Energy Demand ◽  
Renewable Energy Sources ◽  
High Energy ◽  
Aluminium Foam ◽  
Piping System ◽  
Building Roof ◽  
Energy Needs ◽  
Demand Reduction ◽  
Progressive Technology

The high energy efficiency of buildings can be achieved if energy needs are almost entirely covered by the supply of renewable energy sources obtained directly on the building or in its immediate vicinity. The technology providing efficient storage of the heat at a time of excessive sunlight is necessary if a returns of investment for the construction of small houses with zero energy balance should be less than 10 years. The regular alternation of day and night cycle resulting in continuously changing amount of sunshine falling on the building roof causes even though a small but very well usable potential. The concept presented in this contribution is based on the storage of energy obtained through the aluminium foam roof and facade cladding, which are capable of absorbing the desired, or even take away the excess energy to the surroundings if necessary. The energy effectively generated by this way is by means of piping system distributed by heating liquid medium/coolant to interior ceiling heat exchangers made of aluminium foam enabling due to filling by <span style="text-decoration: underline;">P</span>hase <span style="text-decoration: underline;">C</span>hange <span style="text-decoration: underline;">M</span>aterial<span style="text-decoration: underline;">s</span> (PCMs) to store the energy required for heating/cooling for a period of at least several hours. This progressive technology, therefore, contributes significantly to reducing of energy demand and thus also the prices of future not only large buildings but also small family houses that are able to achieve the optimal thermal comfort by extremely low costs. Possibility to manufacture facade, as well as the interior panels of aluminium foam, is a good prerequisite for ensuring that these structural components could be in the nearest future made from fully recyclable aluminium alloys. This fact indicates large potential chance for long-term sustainable further development of above-mentioned advanced technologies.

scholarly journals EVALUATION OF ENERGY-EFFICIENT RETROFIT POTENTIAL FOR GOVERNMENT OFFICES IN INDIA

2021 ◽  
Vol 6 (2) ◽  
pp. 03-17
Author(s):  
Gazal Dandia ◽  
◽  
Pratheek Sudhakaran ◽  
Chaitali Basu ◽  
◽  
...  
Keyword(s):  
Energy Consumption ◽  
Total Energy ◽  
Energy Efficient ◽  
Energy Demand ◽  
Energy Savings ◽  
High Energy ◽  
Payback Period ◽  
Total Energy Consumption ◽  
The Cost

Introduction: High energy consumption by buildings is a great threat to the environment and one of the major causes of climate change. With a population of 1.4 billion people and one of the fastest-growing economies in the world, India is extremely vital for the future of global energy markets. The energy demand for construction activities continues to rise and it is responsible for over one-third of global final energy consumption. Currently, buildings in India account for 35% of total energy consumption and the value is growing by 8% annually. Around 11% of total energy consumption are attributed to the commercial sector. Energy-efficient retrofitting of the built environments created in recent decades is a pressing urban challenge. Presently, most energy-efficient retrofit projects focus mainly on the engineering aspects. In this paper, we evaluate various retrofitting options, such as passive architectural interventions, active technological interventions, or a combination of both, to create the optimum result for the selected building. Methods: Based on a literature study and case examples, we identified various energy-efficient retrofit measures, and then examined and evaluated those as applied to the case study of Awas Bhawan (Rajasthan Housing Board Headquarters), Jaipur, India. For the evaluation, we developed a simulation model using EQuest for each energy measure and calculated the resultant energy savings. Then, based on the cost of implementation and the cost of energy saved, we calculated the payback period. Finally, an optimum retrofit solution was formulated with account for the payback period and ease of installation. Results and discussion: The detailed analysis of various energy-efficient retrofit measures as applied to the case study indicates that the most feasible options for retrofit resulting in optimum energy savings with short payback periods include passive architecture measures and equipment upgrades.

scholarly journals Energy Monitoring in a Heating and Cooling System in a Building Based on the Example of the Turówka Hotel

Energies ◽  
2020 ◽  
Vol 13 (8) ◽  
pp. 1968 ◽  
Author(s):  
Marek Borowski ◽  
Piotr Mazur ◽  
Sławosz Kleszcz ◽  
Klaudia Zwolińska
Keyword(s):  
Energy Consumption ◽  
Energy Management ◽  
Energy Demand ◽  
Cooling System ◽  
Energy Performance ◽  
High Energy ◽  
Building Envelope ◽  
Large Variability ◽  
Heating And Cooling ◽  
And Control

The energy consumption of buildings is very important for both economic and environmental reasons. Newly built buildings are characterized by higher insulation and airtightness of the building envelope, and are additionally equipped with technologies that minimize energy consumption in order to meet legal requirements. In existing buildings, the modernization process should be properly planned, taking into account available technologies and implementation possibilities. Hotel buildings are characterized by a large variability of energy demand, both on a daily and a yearly basis. Monitoring systems, therefore, provide the necessary information needed for proper energy management in the building. This article presents an energy analysis of the Turówka hotel located in Wieliczka (southern Poland). The historical hotel facility is being modernized as part of the project to adapt the building to the requirements of a sustainable building. The modernization proposal includes a trigeneration system with a multifunctional reverse regenerator and control module using neural algorithms. The main purpose is to improve the energy efficiency of the building and adapt it to the requirements of low-energy buildings. The implementation of a monitoring system enables energy consumption to be reduced and improves the energy performance of the building, especially through using energy management systems and control modules. The proposed retrofit solution considers the high energy consumption, structure of the energy demand, and limits of retrofit intervention on façades.

OPTIMIZING WINDOW TO WALL RATIO FOR CONSERVING ENERGY IN OFFICE BUILDINGS FOR COOLING DOMINANT CLIMATES WITH AND WITHOUT DAYLIGHT UTILIZATION

2019 ◽  
Vol 14 (3) ◽  
pp. 129-142
Author(s):  
Madeeha Altaf ◽  
Frances Hill
Keyword(s):  
Energy Consumption ◽  
Energy Demand ◽  
High Energy ◽  
Office Buildings ◽  
Commercial Building ◽  
Architectural Practice ◽  
Building Facades ◽  
Least Energy ◽  
High Energy Consumption ◽  
Selection Of

The construction of fully glazed commercial building facades responsible for high energy consumption has become a common architectural practice worldwide irrespective of the climate. This paper presents the methodology to optimize the Window to Wall Ratio (WWR) with and without daylight utilization to reduce energy consumption in office buildings for the climate of Lahore, Pakistan, using a simulation tool COMFEN. The impacts of solar heat and daylight entering through the building façade with reference to different WWR and orientation were explored for the selection of optimum WWR. The optimum WWR was selected on the basis of least energy consumption whilst achieving a threshold lighting level. When daylight is not utilized, the energy demand is minimized by the lowest possible WWR. With daylight utilization, energy demand is optimized by use of WWRs of 13% to 30% according to orientation. Optimum WWR with daylight utilization offered a more balanced solution. The methodology used in this study can be applied to any location around the world to find optimum WWR for any glazing type.

Large-Size Wheel Rotary Forging Process Research

2013 ◽  
Vol 456 ◽  
pp. 282-285 ◽  
Author(s):  
Jian Li ◽  
Hui Xue Sun ◽  
Li Mei Wang ◽  
Mu Hua Tao
Keyword(s):  
Energy Consumption ◽  
New Technology ◽  
High Energy ◽  
Production Costs ◽  
Forming Force ◽  
Forging Process ◽  
Rotary Forging ◽  
Large Size ◽  
Process Route ◽  
Small Influence

For forging process of the large size alloy wheels have several disadvantages, such as using large tonnage presses, high energy consumption, etc.So rotary-forging process route is developed. Forgings forming require 5000-6000T presses by the traditional process, but only require 350T rotary forging presses by new technology. This new process reduces the production costs and energy consumption and extends the life of die. Investigate the effect of several key factors on the forming force. The results show that forming force decreases with the decrease of press amount per turn, and reduce with the die and bars temperature increases. Forging wheel window has small influence on the forming force, but can decrease the forgings cutting weight, improve material utilization. This study plays a guiding role for equipment R & D and determination of the production processes parameters.

scholarly journals Reduction of air pollution as a basis for a healthy urban environment

2019 ◽  
Vol 97 ◽  
pp. 01042
Author(s):  
Anna Lis
Keyword(s):  
Air Pollution ◽  
Energy Demand ◽  
Thermal Protection ◽  
Residential Buildings ◽  
Energy Requirement ◽  
Renewable Energy Sources ◽  
High Energy ◽  
Premature Deaths ◽  
The World ◽  
Environmental Causes

The WHO report shows that air in the majority of cities in the world is polluted to a large extent. Air pollution is one of the basic environmental causes of premature deaths in the world. The main source of air pollution in cities is the low emission associated with fuel combustion to generate heat for buildings heating, communication and industry. The existing buildings in Poland are characterized by high energy and, consequently, ecological potential. The aim is to estimate predicted energetic and ecological effects of activities that adapt existing residential buildings to the requirements for the thermal protection of buildings in Poland and presenting the possibility of using renewable energy sources. The energy demand for heating buildings at 60-70 kWh/(m2rok) has been adopted. The calculations show that as a result of this adjustment, the energy demand for heating in residential buildings may decrease by an average of around 67% compared to 2011. Such actions will reduce the overall emissions of air pollution from households by reducing the energy requirement for heating apartments from about 30% to about 67%, depending on the type of pollutant.

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