scholarly journals Review of Energy Consumption and CO2 Emission in School Buildings: Case Study of the City of Kragujevac

Author(s):  
Ana Radojević ◽  
Danijela Nikolić ◽  
Jasmina Skerlić
2021 ◽  
Vol 11 (11) ◽  
pp. 5108
Author(s):  
María Esther Liébana-Durán ◽  
Begoña Serrano-Lanzarote ◽  
Leticia Ortega-Madrigal

In order to achieve the EU emission reduction goals, it is essential to renovate the building stock, by improving energy efficiency and promoting total decarbonisation. According to the 2018/844/EU Directive, 3% of Public Administration buildings should be renovated every year. So as to identify the measures to be applied in those buildings and obtain the greatest reduction in energy consumption at the lowest cost, the Directive 2010/31/EU proposed a cost-optimisation-based methodology. The implementation of this allowed to carry out studies in detail in actual scenarios for the energy renovation of thermal envelopes of public schools in the city of Valencia. First, primary school buildings were analysed and classified into three representative types. For each type, 21 sets of measures for improving building thermal envelopes were proposed, considering the global cost, in order to learn about the savings obtained, the repayment term for the investment made, the percentage reduction in energy consumption and the level of compliance with regulatory requirements. The result and conclusions will help Public Administration in Valencia to draw up an energy renovation plan for public building schools in the city.


2010 ◽  
Vol 16 (4) ◽  
pp. 567-576 ◽  
Author(s):  
Jorge S. Carlos ◽  
Helena Corvacho

A study on thermal retrofit of Portuguese elementary school buildings is presented. The type of school under analysis is one adopted by a large construction campaign that began in the 1940's. This building stock has a very poor thermal performance and their retrofit was evaluated starting with a case study of a school in the central region of Portugal, where some experimental measures were performed and a calculation method was applied for the heating energy consumption estimation. A solution for the thermal retrofit of the school building external envelope was optimized and the effect on heating energy consumption was evaluated, using ECOTECT, resulting in a reduction of 52% of heating energy needs. The national impact of the thermal retrofit of the whole building stock was characterised in terms of energy savings. Finally, the pre‐heating of the ventilation air was also tested as a complementary measure and its effect evaluated. The solution tested may provide up to 1000 kWh/year of extra heat gains by pre‐heating the ventilation air. It must be underlined though that the performance of these systems is dependent on the thermal properties of their components so higher reductions can be achieved with the improvement of these properties. Santrauka Straipsnyje pateikiami Portugalijos pradines mokyklos šiluminio atnaujinimo tyrimai. Analizuojamos mokyklos tipas yra vienas iš taikytu po 1940 metu prasidejusioje plačioje statybos kampanijoje. Šios pastatu grupes šilumines charakteristikos yra labai prastos. Ju atnaujinimo vertinimas buvo pradetas nuo centrineje Portugalijoje esančios mokyklos, kurioje buvo igyvendintos kai kurios eksperimentines priemones, ir energijos sanaudoms nustatyti pritaikytas skaičiavimo metodas. Pastato išoriniu atitvaru šiluminio atnaujinimo sprendimas buvo optimizuotas ir jo itaka šilumines energijos sanaudoms nustatyta naudojant ECOTECT. Šilumines energijos poreikis sumažejo 52 %. Iš viso pastatu fondo šiluminio atnaujinimo itaka nacionaliniu mastu vertinta sutaupytos energijos kiekiu. Pabaigoje kaip papildoma priemone buvo išbandytas pirminis vedinamo oro pašildymas, nustatytas jo naudingumas. Išbandytasis pirminis vedinamo oro pašildymas gali suteikti iki 1000 kWh/metus papildomo išsiskiriančio šilumos kiekio. Pabrežtina, kad nors šiu sistemu veikimo charakteristikos priklauso nuo ju komponentu šiluminiu savybiu, gerinant šias savybes galima daugiau sumažinti energijos sanaudu.


Energies ◽  
2019 ◽  
Vol 12 (5) ◽  
pp. 907 ◽  
Author(s):  
Anna Kowalska-Pyzalska ◽  
Katarzyna Byrka

This paper analyses attitudinal and socio-economic determinants of the householders’ willingness to monitor their energy consumption. Residential consumers can monitor their energy consumption by means of traditional (electricity bill) and modern tools (smart metering information platforms, SMP). Within this empirical study we test the effect of environmental attitudes, knowledge and perceived possibilities on consumers’ stages of readiness to adopt SMP based the stage model of self-regulated behavioral change (SSCB). Perceived possibilities to monitor energy consumption on a regular basis was found to be the predictor of adoption in every examined stage of readiness. General knowledge predicted adoption of the stage in which consumers declared willingness to learn know-how of using SMP. The results suggest that an effectiveness of educational campaigns may be restricted to only some consumers.


2012 ◽  
Vol 433-440 ◽  
pp. 5821-5827
Author(s):  
Hafsa Al Omari ◽  
E. Luma Al Dabbagh

The green building or green architecture has come to light as a strong architectural movement at the end of 1990's and as a main trend in architectural practice. The architectural green is a modern architectural philosophy which deals with the competent relationship between the functional constructive systems and its vital environmental, by controlling the inputs and outputs of this system with the least negative effects on the environment and occupant's health, and the least energy consumption during the various stages of the building ( construction, operation, maintenance and destruction ) to achieve the functional activities and the inventive and efficient architectural structures. The importance of this movement lies in trying to achieve the sustainable development in its environmental, social and economic aspects because of the problems that developed and developing countries ( e.g. Iraq ) face such as energy consumption and pollution. Several international standards of different classifications, depending on local context of each country, has been appeared. Some of these tools are (BREEAM, LEED, CO-CHPS Colorado, GBTool, CASBEE) which aim to assess the performance of the building from green Architecture's perspective. Although there is a similarity in the classification levels including the sustainable location, how to use (water, energy and atmosphere, materials, resources) effectively, indoor environment quality and the design's innovation, they differ in other aspects that its importance relies on the environmental and local context. The problem of our research was the absence of the practical evaluation tool of the green building ( school buildings ) for the Iraq's local context in general and Mosul in particular, compatibly with the city climate. The research aims at making theoretical construction to identify the assessment indicators of the school buildings from green architecture's perspective, in order to create suitable and general assessment tool for schools building in Mosul city which can help improving the performance of these schools, decreasing the effect on the health, sparing energy coasts, and other benefits in the stages of the project ( pre-construction, construction, post-construction ). The research supposes that the multi-dimensional designing strategy is an active tool used in establishing the tool classification of assessment. For reaching goals, the research adopts the theoretical method and questionnaire. Finally, the research provides an assessment tool for school building in Mosul from the green architecture's perspective (AGBS) Green Building Assessment Tool for school ) in conformity with the local context of the city for enabling the designer to follow it in order to achieve the investment within his school architectural products. Results indicate six categories for assessment tool. First Sustainable Sites category (SS) which have the greatest weight 25.7%, , then Indoor Environment Quality(IEQ) 24.35667%. then Materials & Resources (M&R), Energy & Atomosphere (A&E), Water Efficiency(WE),and Innovotion in design (ID), have 17.32% ، 10.5% ، 3.987181% , Respectively.


Energies ◽  
2020 ◽  
Vol 13 (17) ◽  
pp. 4577 ◽  
Author(s):  
Danijela Nikolic ◽  
Slobodan Djordjevic ◽  
Jasmina Skerlic ◽  
Jasna Radulovic

It is well known that nowadays a significant part of the total energy consumption is related to buildings, so research for improving building energy efficiency is very important. This paper presents our investigations about the dimensioning of horizontal overhangs in order to determine the minimum annual consumption of building primary energy for heating, cooling and lighting. In this investigation, embodied energy for horizontal roof overhangs was taken into account. The annual simulation was carried out for a residential building located in the city of Belgrade (Serbia). Horizontal overhangs (roof and balcony) are positioned to provide shading of all exterior of the building. The building is simulated in the EnergyPlus software environment. The optimization of the overhang size was performed by using the Hooke Jeeves algorithm and plug-in GenOpt program. The objective function minimizes the annual consumption of primary energy for heating, cooling and lighting of the building and energy spent to build overhangs. The simulation results show that the building with optimally sized roof and balcony overhangs consumed 7.12% lessprimary energy for heating, cooling and lighting, compared to the house without overhangs. A 44.15% reduction in cooling energy consumption is also achieved.


2019 ◽  
Vol 7 (1) ◽  
pp. 13
Author(s):  
Faris A. Alfaraidy ◽  
Hassan A. Sulieman

As a result of increasing population and building of new schools in Saudi Arabia, the demand for electricity is growing rapidly. In this context, the utilization of renewable energy resources such as solar energy appears to goal since it is abundant and holds huge ecological and economic promise. This study aims to provide a new entrance in school buildings’ design and construction by studying the current situation of energy consumption, the possibility of using solar cells, and the economics of its exploitation in school buildings. Interviews were conducted in school buildings at different levels in Arar city as a case study to collect data on energy consumption. Furthermore, a base case school building was selected for studying detailed energy consumption, and then, photovoltaic (PV) energy was proposed to use the on-grid system in accordance with governmental regulations. The study concluded that the use of PV energy in school buildings is economically feasible in addition to that more incentive from the government is needed for wide penetration use in Kingdom Saudi Arabia.


2021 ◽  
Vol 34 (01) ◽  
pp. 82-96
Author(s):  
Mojgan Rezaei ◽  
Mohsen Ranjbar ◽  
Bahram Azadbakht ◽  
Alireza Estelaji

The city is a living thing whose population determines its future. Given its administrative and political pole in Iran, Tehran has attracted a significant population and District 6, given the establishment of commercial-administrative centers is the administrative pole. The purpose of the study was to examine and compare the energy consumption in the field of transportation and administrative-commercial buildings. For this purpose, the research method was based on a researcher-made questionnaire based on 6 main variables and 49 items. The sample size of 384 people was selected to reach the results using Cochran's test to answer. The study was applied in terms of purpose and descriptive-analytical in terms of nature. Data collection was based on library documents, and Vikor test was used to rank energy consumption and reach the final results. It has to be acknowledged that the results showed a significant relationship between social and economic factors in the field of transportation and residential and commercial areas until the end of January 2019. Other cases followed a 5-year pattern with a not-so-low consumption rate. Moreover, there was a significant relationship between pollutant production and energy consumption in the second quarter of each year. The statistical results based on the Vickor model showed that the first and second conditions of the above statistical test were confirmed and Districts 2, 3 and 8 have the best rank in terms of Q value, respectively, and the final result is correct.


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