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You searched for: Journal name Applied energy Remove constraint Journal name: Applied energy Subject term buildings Remove constraint Subject term: buildings Subject term energy Remove constraint Subject term: energy
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1. A study on optimum insulation thickness in walls and energy savings in Tunisian buildings based on analytical calculation of cooling and heating transmission loads

Author:
Naouel Daouas
Source:
Applied energy 2011 v.88 no.1 pp. 156-164
ISSN:
0306-2619
Subject:
buildings; climate; cooling; cost analysis; economic factors; energy; energy conservation; heat; heat sums; inflation; insulating materials; models; summer; walls; winter
Abstract:
... In Tunisian climate, both heating in winter and cooling in summer are required to reach comfort levels. Due to the significant increase in building energy consumption, insulation of external walls is recently applied with a thickness typically ranging between 4cm and 5cm regardless of structure and orientation of walls and of economic parameters. In the present study, optimum insulation thickness, ...
DOI:
10.1016/j.apenergy.2010.07.030

2. Capacitive effect on the heat transfer through building glazing systems

Author:
Roberto Zanetti Freire; Walter Mazuroski; Marc Olivier Abadie; Nathan Mendes
Source:
Applied energy 2011 v.88 no.12 pp. 4310-4319
ISSN:
0306-2619
Subject:
absorption; air temperature; buildings; energy; heat transfer; models; prediction; surface temperature
Abstract:
... In recent years, several intensive studies have been carried out in order to reduce the energy consumption of buildings. One solution lies on whole building energy simulation that permits to enable the heat (and moisture) transfer through the building envelope and, consequently, is a way to understand how to improve the building performance. This article aims to analyze the modeling level needed t ...
DOI:
10.1016/j.apenergy.2011.04.006

3. Determination of free cooling potential: A case study for İstanbul, Turkey

Author:
Hüsamettin Bulut; Mehmet Azmi Aktacir
Source:
Applied energy 2011 v.88 no.3 pp. 680-689
ISSN:
0306-2619
Subject:
air conditioning; air temperature; buildings; case studies; cooling; energy; energy conservation; heat; meteorological data; Turkey (country)
Abstract:
... A significant portion of energy consumed in buildings is attributed to energy usage by heating, ventilating and air conditioning (HVAC) systems. Free cooling is a good opportunity for energy savings in air conditioning systems. With free cooling, commonly is known economizer cycle, the benefits of lower ambient temperatures are utilized for a significant proportion of the year in many climates. Th ...
DOI:
10.1016/j.apenergy.2010.08.030

4. Development of a multicriteria tool for optimizing the renovation of buildings

Author:
Fanny Pernodet Chantrelle; Hicham Lahmidi; Werner Keilholz; Mohamed El Mankibi; Pierre Michel
Source:
Applied energy 2011 v.88 no.4 pp. 1386-1394
ISSN:
0306-2619
Subject:
algorithms; buildings; computer software; cooling; databases; decision making; energy; environmental impact; heat; France
Abstract:
... The renovation of a building involves not just the fulfilment of functional requirements, but also considerations such as energy consumption, investment costs, environmental impact and wellbeing. As things stand, new design methods and tools are needed, and the aim of the research presented in this article was to develop a multicriteria tool, MultiOpt, for the optimization of renovation operations ...
DOI:
10.1016/j.apenergy.2010.10.002

5. Experimental study of an air-source heat pump for simultaneous heating and cooling – Part 1: Basic concepts and performance verification

Author:
Paul Byrne; Jacques Miriel; Yves Lenat
Source:
Applied energy 2011 v.88 no.5 pp. 1841-1847
ISSN:
0306-2619
Subject:
air; buildings; cold; computer software; cooling; energy; heat production; heat pumps; winter
Abstract:
... This article presents the concepts of an air-source heat pump for simultaneous heating and cooling (HPS) designed for hotels and smaller residential, commercial and office buildings in which simultaneous needs in heating and cooling are frequent. The main advantage of the HPS is to carry out simultaneously space heating and space cooling with the same energy input. Ambient air is used as a balanci ...
DOI:
10.1016/j.apenergy.2010.12.009

6. Experimental study of an air-source heat pump for simultaneous heating and cooling – Part 2: Dynamic behaviour and two-phase thermosiphon defrosting technique

Author:
Paul Byrne; Jacques Miriel; Yves Lenat
Source:
Applied energy 2011 v.88 no.9 pp. 3072-3078
ISSN:
0306-2619
Subject:
air; buildings; cold; computer software; cooling; energy; heat production; heat pumps; winter
Abstract:
... This article presents the concepts of an air-source heat pump for simultaneous heating and cooling (HPS) designed for hotels and smaller residential, commercial and office buildings in which simultaneous needs in heating and cooling are frequent. The main advantage of the HPS is to carry out simultaneously space heating and space cooling with the same energy input. Ambient air is used as a balanci ...
DOI:
10.1016/j.apenergy.2011.03.002

7. Numerical simulation of cooling energy consumption in connection with thermostat operation mode and comfort requirements for the Athens buildings

Author:
C. Tzivanidis; K.A. Antonopoulos; F. Gioti
Source:
Applied energy 2011 v.88 no.8 pp. 2871-2884
ISSN:
0306-2619
Subject:
buildings; cooling; energy; energy conservation; mathematical models; prediction; summer; temperature; thermal properties
Abstract:
... A model and a corresponding numerical procedure, based on the finite-difference method, have been developed for the prediction of buildings thermal behavior under the influence of all possible thermal loads and the “guidance” of cooling control system in conjunction with thermal comfort requirements. Using the developed procedure analyses have been conducted concerning the effects of thermostat op ...
DOI:
10.1016/j.apenergy.2011.01.050

8. Optimization of insulation thickness for different glazing areas in buildings for various climatic regions in Turkey

Author:
Derya B. Özkan; Cenk Onan
Source:
Applied energy 2011 v.88 no.4 pp. 1331-1342
ISSN:
0306-2619
Subject:
X-ray photoelectron spectroscopy; buildings; carbon dioxide; cooling; emissions; energy; energy conservation; energy use and consumption; foams; fuel oils; heat; heat sums; insulating materials; natural gas; pollutants; polystyrenes; sulfur dioxide
Abstract:
... Insulation is one of the most effective methods intended for reducing energy consumption in both heating and cooling of buildings. Selecting the right materials and determining the optimum insulation thickness in building insulation application is an important issue. In 2000, the “Thermal Insulation Requirements for Buildings” was enacted in Turkey, energy saving by limiting the energy amount used ...
DOI:
10.1016/j.apenergy.2010.10.025

9. Overview of thermal energy storage (TES) potential energy savings and climate change mitigation in Spain and Europe

Author:
Pablo Arce; Marc Medrano; Antoni Gil; Eduard Oró; Luisa F. Cabeza
Source:
Applied energy 2011 v.88 no.8 pp. 2764-2774
ISSN:
0306-2619
Subject:
buildings; carbon dioxide; climate change; ecosystem services; energy; energy conservation; greenhouse gas emissions; models; Germany; Spain
Abstract:
... Thermal energy storage (TES) is nowadays presented as one of the most feasible solutions in achieving energy savings and environmentally correct behaviors. Its potential applications have led to R&D activities and to the development of various technology types. However, so far there is no available data on a national scale in Spain and on a continental level in Europe, to corroborate the associate ...
DOI:
10.1016/j.apenergy.2011.01.067

10. Techno-economic analysis of a wind–solar hybrid renewable energy system with rainwater collection feature for urban high-rise application

Author:
W.T. Chong; M.S. Naghavi; S.C. Poh; T.M.I. Mahlia; K.C. Pan
Source:
Applied energy 2011 v.88 no.11 pp. 4067-4077
ISSN:
0306-2619
Subject:
altitude; buildings; collectors; economic feasibility; energy; energy conservation; energy requirements; life cycle costing; noise pollution; photovoltaic cells; rain; renewable energy sources; sustainable technology; wind speed; wind turbines
Abstract:
... The technical and economic feasibility study of an innovative wind–solar hybrid renewable energy generation system with rainwater collection feature for electrical energy generation is presented in this paper. The power generated would supply part of the energy requirements of the high-rise building where the system is installed. The system integrates and optimizes several green technologies; incl ...
DOI:
10.1016/j.apenergy.2011.04.042

11. The impact of the projected changes in temperature on heating and cooling requirements in buildings in Dhaka, Bangladesh

Author:
Monjur Mourshed
Source:
Applied energy 2011 v.88 no.11 pp. 3737-3746
ISSN:
0306-2619
Subject:
buildings; climate; climate change; cooling; energy; heat; heat sums; human health; infrastructure; meteorological data; monsoon season; population density; stakeholders; summer; temperature; time series analysis; Bangladesh
Abstract:
... Dhaka, the capital of Bangladesh, is a fast growing megacity with a population of 12.8 million. Due to its tropical location, dense urban morphology and higher than average density of population, buildings in Dhaka are likely to be adversely affected by the projected changes in climate, in particular by the increases in temperature. Buildings play a vital role in most aspects of our lives and thei ...
DOI:
10.1016/j.apenergy.2011.05.024

12. Thermal testing and numerical simulation of gypsum wallboards incorporated with different PCMs content

Author:
Ana M. Borreguero; M. Luz Sánchez; José Luis Valverde; Manuel Carmona; Juan F. Rodríguez
Source:
Applied energy 2011 v.88 no.3 pp. 930-937
ISSN:
0306-2619
Subject:
buildings; differential scanning calorimetry; energy; energy conservation; equations; gypsum; heat; mathematical models; model validation; phase transition; temperature; thermal conductivity; walls
Abstract:
... A mathematical model based on the Fourier heat conduction equation for one dimension was developed. The complexity of the mathematical solution of this stiff set of differential equations that use boundary conditions that move with the solid–liquid interface was simplified by using an apparent heat capacity (cₚ ᵃᵖ) dependent on temperature and obtained by Modulated Differential Scanning Calorimetr ...
DOI:
10.1016/j.apenergy.2010.08.014

13. Toward a positive-net-energy residential building in Serbian conditions

Author:
Milorad Bojić; Novak Nikolić; Danijela Nikolić; Jasmina Skerlić; Ivan Miletić
Source:
Applied energy 2011 v.88 no.7 pp. 2407-2419
ISSN:
0306-2619
Subject:
buildings; computer software; electricity; energy; heat; heat exchangers; heat pumps; heaters; markets; mathematical models; residential housing; solar energy; structural roofs; summer; tariffs; winter; Serbia
Abstract:
... This article reports investigations of a residential building in Serbian conditions energized by electricity from photovoltaics (PVs), and the electricity grid. The building uses electricity to run its space heating system, lighting and appliances, and to heat domestic hot water (DHW). The space heating system comprises floor heaters, a water-to-water heat pump, and a ground heat exchanger. The PV ...
DOI:
10.1016/j.apenergy.2011.01.011

14. A quantitative methodology to evaluate thermal bridges in buildings

Author:
Francesco Asdrubali; Giorgio Baldinelli; Francesco Bianchi
Source:
Applied energy 2012 v.97 no. pp. 365-373
ISSN:
0306-2619
Subject:
air temperature; buildings; energy; heat; heat tolerance; quantitative analysis; stratigraphy; surveys; thermography; transmittance; winter
Abstract:
... The use of multi-layer walls with high thermal resistance values is widely used to reduce heat losses in buildings during wintertime. Nevertheless, it is extremely important to treat also weaker components of the envelope such as doors, windows and all the various thermal bridges, otherwise the efforts in increasing walls thermal resistance can be vanished. If the improvement of the thermal perfor ...
DOI:
10.1016/j.apenergy.2011.12.054

15. A study on the optimum insulation thicknesses of various types of external walls with respect to different materials, fuels and climate zones in Turkey

Author:
Betul Bektas Ekici; Ayca Aytac Gulten; U. Teoman Aksoy
Source:
Applied energy 2012 v.92 no. pp. 211-217
ISSN:
0306-2619
Subject:
bricks; building construction; buildings; cities; climatic zones; coal; concrete; electricity; energy; energy conservation; energy costs; fiberglass; fuel oils; insulating materials; liquid petroleum gas; natural gas; polystyrenes; polyurethanes
Abstract:
... In Turkey the insulation of buildings was not a common occurrence until it became obligatory after the publication of the TS 825 Turkish Thermal Insulation Standard. However, most of the buildings still have little or no insulation. The aim of this study is to show the optimum insulation thicknesses for the different wall types; stone, brick and concrete, which are usually used in building constru ...
DOI:
10.1016/j.apenergy.2011.10.008

16. An approach for developing sensitive design parameter guidelines to reduce the energy requirements of low-rise apartment buildings

Author:
Yusuf Yildiz; Koray Korkmaz; Türkan Göksal Özbalta; Zeynep Durmus Arsan
Source:
Applied energy 2012 v.93 no. pp. 337-347
ISSN:
0306-2619
Subject:
Monte Carlo method; buildings; climate; cooling; energy; energy requirements; global warming; guidelines; heat; interviews; natural ventilation; professionals; residential housing
Abstract:
... High levels of energy consumption in residential buildings and global warming are important issues. Thus the energy performance of buildings should be improved in the early stages of design. This article describes an approach for developing guidelines on sensitive and robust design parameters for the present, the 2020s, the 2050s and the 2080s. Such guidelines can help architects to design low-ris ...
DOI:
10.1016/j.apenergy.2011.12.048

17. Analytical comparison between electricity consumption and behavioral characteristics of Swedish households in rented apartments

Author:
Iana Vassileva; Fredrik Wallin; Erik Dahlquist
Source:
Applied energy 2012 v.90 no.1 pp. 182-188
ISSN:
0306-2619
Subject:
attitudes and opinions; buildings; consumer behavior; electricity; energy; energy conservation; households; income; questionnaires; residential housing; surveys; Sweden
Abstract:
... Sufficient data of electricity consumption during large periods of time are accumulated and analyzed in order to develop appropriate electricity-saving measures. An important first step is to analyze and identify buildings/households that have an energy saving potential. In this work an evaluation of monthly electricity consumption data was conducted in identical buildings in the city of Västerås ...
DOI:
10.1016/j.apenergy.2011.05.031

18. Assessing electrical bottlenecks at feeder level for residential net zero-energy buildings by integrated system simulation

Author:
R. Baetens; R. De Coninck; J. Van Roy; B. Verbruggen; J. Driesen; L. Helsen; D. Saelens
Source:
Applied energy 2012 v.96 no. pp. 74-83
ISSN:
0306-2619
Subject:
buildings; electricity; energy; simulation models
Abstract:
... Recent European communications focus on the enforcement that by 2020 all new buildings are nearly Zero-Energy Buildings (ZEBs) and on the deployment of a European Smart Grid. The presented work focuses on assessing the electrical challenges at neighborhood level of an building stock evolving towards ZEBs, and identifying the resulting challenge in multidisciplinary dynamic simulation models requir ...
DOI:
10.1016/j.apenergy.2011.12.098

19. Development of benchmark models for the Egyptian residential buildings sector

Author:
Shady Attia; Arnaud Evrard; Elisabeth Gratia
Source:
Applied energy 2012 v.94 no. pp. 270-284
ISSN:
0306-2619
Subject:
buildings; data collection; energy; energy costs; residential housing; simulation models; surveys; Egypt
Abstract:
... The aim of this study is to develop representative simulation building energy data sets and benchmark models for the Egyptian residential sector. This study reports the results of a recent field survey for residential apartment buildings in Egypt. Two building performance simulation models are created reflecting the average energy consumption characteristics of air-conditioned residential apartmen ...
DOI:
10.1016/j.apenergy.2012.01.065

20. Different methods for the modelling of thermal bridges into energy simulation programs: Comparisons of accuracy for flat heterogeneous roofs in Italian climates

Author:
Fabrizio Ascione; Nicola Bianco; Filippo de’ Rossi; Gianluca Turni; Giuseppe Peter Vanoli
Source:
Applied energy 2012 v.97 no. pp. 405-418
ISSN:
0306-2619
Subject:
energy; thermal conductivity; transmittance; cooling; models; audits; air; seasonal variation; summer; vapors; buildings; heat transfer; hygiene; climate
Abstract:
... Thermal bridges are weak areas of the building envelope, determining heat flows higher than those characterizing the common dispersing surfaces (i.e., walls without discontinuities). This phenomenon induces uncontrolled thermal losses and hygiene problems, connected to the possible vapor condensation and mold growth. Presently, the numerical codes for the energy audits, as, for instance, EnergyPlu ...
DOI:
10.1016/j.apenergy.2012.01.022