Effectiveness of Materials, Technologies, and Renewable Energy in Educational Buildings Through Cluster Analysis of Energy Retrofitting

2018 ◽  
pp. 25-37 ◽  
Author(s):  
Francesco Asdrubali ◽  
Laura Calcagnini ◽  
Luca Evangelisti ◽  
Claudia Guattari ◽  
Paola Marrone
Keyword(s):  
Cluster Analysis ◽  
Renewable Energy ◽  
Educational Buildings

Applying Cluster Analysis to Renewable Energy Emergent Sector at Local Level

2014 ◽  
pp. 293-300 ◽  
Author(s):  
Jaso Larruscain ◽  
Rosa Río-Belver ◽  
Ernesto Cilleruelo ◽  
Gaizka Garechana ◽  
Javier Gavilanes-Trapote
Keyword(s):  
Cluster Analysis ◽  
Renewable Energy ◽  
Local Level

scholarly journals Energy Efficiency – Indoor Air Quality Dilemma in Educational Buildings: A Possible Solution

2020 ◽  
Vol 24 (1) ◽  
pp. 357-367
Author(s):  
Liva Asere ◽  
Andra Blumberga
Keyword(s):  
Energy Efficiency ◽  
Renewable Energy ◽  
Air Quality ◽  
Indoor Air Quality ◽  
Indoor Air ◽  
Renewable Energy Sources ◽  
Energy Sources ◽  
Pv System ◽  
Educational Buildings ◽  
Electricity Tariff

AbstractThe energy efficiency – indoor air quality dilemma is well known and the main drawback to operate the mechanical ventilation is electricity costs as concluded from previous studies. Educational buildings are one of the places where future taxpayers spend a lot of time. This paper aims to study an alternative solution on how to reduce energy efficiency – indoor air quality dilemma in educational buildings by adopting systems that use renewable energy sources. A typical education building in Latvia is taken as a case study by changing it from a consumer to prosumer. This building type has a specific electricity usage profile that makes the choice of photovoltaics (PV) power quite challenging so the various power options have been analysed and used for an electricity solution. Also, the more decentralised preference is chosen – disconnect from a public heating provider and using a local system with a pellet boiler. Educational buildings using PV can reduce the electricity tariff, but the payback periods are still not very satisfactory without subsidies. The average electricity tariff per month varies between scenarios and the best one is for the scenario with 30 kW installed power. The educational building partly using 16 kW PV system reduces not only its bill for electricity but also reduces CO2 emissions by around 36 tons. The education buildings as energy prosumers using renewable energy sources are reducing GHG emissions by having high indoor air quality.

scholarly journals Introduction of Renewable Energy in the Spanish Wine Sector

2018 ◽  
Vol 10 (9) ◽  
pp. 3157 ◽  
Author(s):  
Nieves Garcia-Casarejos ◽  
Pilar Gargallo ◽  
Javier Carroquino
Keyword(s):  
Climate Change ◽  
Cluster Analysis ◽  
Factor Analysis ◽  
Renewable Energy ◽  
Statistical Technique ◽  
Wine Industry ◽  
Mitigation Measures ◽  
Multivariate Statistical ◽  
The Third ◽  
Wine Sector

The wine sector is very sensitive to the effects of climate change. Despite this, there is little use of renewable energy in the wine sector. In fact, the adoption of mitigation measures by companies depends on their own attitudes and interests. The objective of this work was to understand the use and disposition of Spanish wineries to incorporate renewable energy. In addition, subjective obstacles to and motivations for adoption could be identified. First, a survey was conducted on the Spanish wine sector. Second, the multivariate statistical technique of factor analysis was applied. Third, a set of indicators to describe the determinant factors that influence a winery’s decision to adopt renewable energy was obtained. Finally, a cluster analysis provided three different profiles. The first group comprised wineries that did not trust on the maturity of renewable energy. The second one comprised wineries that were not convinced about introducing renewable energy, either for environmental or reputational reasons. The third group comprised wineries convinced of the benefits of incorporating renewable energy. This work was done as a part of the European project: Renewable Energy in the Wine Industry (LIFE REWIND).

Use of Renewable Energy as a Strategic Action for Companies in the Agricultural Sector

2021 ◽  
Vol 14 (1) ◽  
Author(s):  
César Gioberti Catalán Dibene ◽  
Isabel Cristina Taddei Bringas ◽  
Juan Martin Preciado Rodríguez
Keyword(s):  
Cluster Analysis ◽  
Renewable Energy ◽  
Strategic Behavior ◽  
Agricultural Sector ◽  
Renewable Energies ◽  
Competitive Performance ◽  
Market Position ◽  
Strategic Action

Objective: To describe the use of renewable energies in companies in theagricultural sector in order to associate their use to competitiveness variables and todetermine if their incorporation has an impact on the competitive performance of thecompanies.Design/Methodology/Approach: An instrument was designed aimed at managersand owners of companies in the agricultural sector based on the theory of industrialorganization and competitiveness. The information was coded, and association testsas well as comparative cluster analysis were performed.Results: The use of renewable energy by the companies addresses economic andcommercial strategies. Of the twelve competitiveness variables used to comparecompanies, nine were linked to the use of renewable energies. The companies usingrenewable energy demonstrated superior results in competitiveness.Study Limitations/Implications: The results are applicable to companies in theagricultural sector within the region analyzed. Financial and energy consumptionvariables should be considered if the method of analysis is to be replicated.Findings/Conclusions: The use of renewable energy is a strategic behavior thatallows companies to improve their market position. Companies that use renewableenergy as a strategic behavior are more competitive.

scholarly journals Use of Renewable Energy Sources in the European Union and the Visegrad Group Countries—Results of Cluster Analysis

Energies ◽  
2021 ◽  
Vol 14 (18) ◽  
pp. 5680
Author(s):  
Elżbieta Kacperska ◽  
Katarzyna Łukasiewicz ◽  
Piotr Pietrzak
Keyword(s):  
European Union ◽  
Cluster Analysis ◽  
Renewable Energy ◽  
Energy Consumption ◽  
Renewable Energy Sources ◽  
Energy Sources ◽  
The European Union ◽  
Renewable Energy Consumption ◽  
Heating And Cooling ◽  
The Eu

Increasing the use of renewable energy sources is one of the strategic objectives of the European Union. In this regard, it seems necessary to answer the question: which of the member countries are the most effective in its implementation? Therefore, the main goal was to distinguish groups of European Union countries, including the Visegrad Group, differing in the use of renewable energy sources in transport, electricity, heating and cooling (based on cluster analysis). All members of the EU were determinedly selected for research on 1 February 2020 (27 countries). The research period embraced the years 2009–2019. The sources of materials were the literature on the topic and data from Eurostat. Descriptive, tabular, graphical methods and cluster analysis were used in the presentation and analysis of materials. In 2019 wind and hydro power accounted for two-thirds of the total electricity generated from renewable sources. In 2019, renewable energy sources made up 34% of gross electricity consumption in the EU-27. Wind and hydro power accounted for two-thirds of the total electricity generated from renewable sources (35% each). Moreover, it was determined that there were 5 clusters that differed in their use of renewable energy sources. The highest average renewable energy consumption in transport, heating and cooling in 2019 was characterized by a cluster consisting of Sweden and Finland. In contrast, the highest average renewable energy consumption in electricity was characterized by a cluster consisting of countries such as: Austria, Croatia, Denmark, Latvia and Portugal. Finally, in a group that included countries such as Belgium, France, Luxembourg, Malta, the Netherlands and the entire VG (Hungary, Czechia, Slovakia and Poland), renewable energy consumption rates (in transport, electricity, heating and cooling) were lower than the EU average (27 countries).

scholarly journals Sequence of practices in personal and societal rhythms – Showering as a case

2019 ◽  
Vol 29 (1) ◽  
pp. 256-281 ◽  
Author(s):  
Kirsten Gram-Hanssen ◽  
Toke Haunstrup Christensen ◽  
Line Valdorff Madsen ◽  
Carolina do Carmo
Keyword(s):  
Cluster Analysis ◽  
Renewable Energy ◽  
Water Consumption ◽  
Temporal Pattern ◽  
Energy Production ◽  
Qualitative Interviews ◽  
Hot Water ◽  
Domestic Hot Water ◽  
Everyday Practices ◽  
Renewable Energy Production

This paper explores methodologically and theoretically how to understand variations in the temporal performances of showering as a practice-as-entity. Time-based data on domestic hot water consumption in 134 Danish households show distinctly different patterns, where some households exhibit highest consumption in the morning and others in the evening. This temporal pattern of showering is analysed based on an innovative combination of statistical cluster analysis and qualitative interviews. Focus is on the timing of showering related to sequences of other everyday practices, and to the rules, meanings and dispositions guiding this practice. From a sustainability perspective, the consumption of water and energy entailed by showering is problematic, and with increasingly intermittent renewable energy production, the timing of showering also becomes an issue. The study demonstrates that the time of showering is closely related to sequences of different practices, that dispositions and socio-demographics influence the order of sequences, and that meanings of showering may vary accordingly. However, there are also common meanings and rules related to showering across these variations, which contribute to the formation of showering as a practice-as-entity.

scholarly journals Diversification of European Union Member States Due to the Production of Renewable Energy from Agriculture and Forestry

2018 ◽  
Vol 18(33) (2) ◽  
pp. 95-104
Author(s):  
Dorota Janiszewska ◽  
Luiza Ossowska
Keyword(s):  
European Union ◽  
Cluster Analysis ◽  
Renewable Energy ◽  
Union Member ◽  
Energy Change ◽  
Diagnostic Features ◽  
Member States ◽  
Eu Countries ◽  
European Union Countries ◽  
European Union Member States

The main objective of this article is to discuss the diversity of European Union countries in terms of their production of renewable energy from agriculture and forestry. The analysis includes 28 EU countries. Figures come from 2013-2015. Diversification of European Union members was conducted using cluster analysis. The following diagnostic features were used for the analysis: production of renewable energy from agriculture, share of agriculture in production of renewable energy, change in the production of renewable energy from agriculture in 2013-2015, production of renewable energy from forestry, share of forestry in production of renewable energy, change in the production of renewable energy from forestry in 2013-2015. As a result of the cluster analysis examined regions were divided into five groups.

Trend Cluster Analysis of Wave Data for Renewable Energy

2018 ◽  
Vol 24 (2) ◽  
pp. 951-955
Author(s):  
Puteri N. E Nohuddin ◽  
Zuraini Zainol ◽  
Mohamad Abu Ubaidah Amir
Keyword(s):  
Cluster Analysis ◽  
Renewable Energy ◽  
Wave Data
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