Search results for "Energy agency"

showing 4 items of 4 documents

Physical activity and fat-free mass during growth and in later life.

2021

ABSTRACT Background Physical activity may be a way to increase and maintain fat-free mass (FFM) in later life, similar to the prevention of fractures by increasing peak bone mass. Objectives A study is presented of the association between FFM and physical activity in relation to age. Methods In a cross-sectional study, FFM was analyzed in relation to physical activity in a large participant group as compiled in the International Atomic Energy Agency Doubly Labeled Water database. The database included 2000 participants, age 3–96 y, with measurements of total energy expenditure (TEE) and resting energy expenditure (REE) to allow calculation of physical activity level (PAL = TEE/REE), and cal…

Adipose Tissue/metabolismMaleAgingIMPACTMedicine (miscellaneous)Medical and Health SciencesLONGITUDINAL CHANGESRC12000302 clinical medicineEngineeringenergy expenditureFaculty of Science80 and overMedicineWATER030212 general & internal medicineChildInternational Atomic Energy Agency Doubly Labeled Water database groupAged 80 and overNutrition and DieteticsMiddle Aged3142 Public health care science environmental and occupational healthEditorialAdipose TissueChild PreschoolFemalephysical activity levelPeak bone massAdultAdolescentPhysical activityBONE MASS030209 endocrinology & metabolismDoubly labeled waterFat massVDP::Medisinske Fag: 700::Helsefag: 800::Ernæring: 81103 medical and health sciencesYoung AdultAnimal scienceTotal energy expenditureFat free massClinical ResearchBENEFITSHumansResting energy expenditure/dk/atira/pure/core/keywords/TheFacultyOfSciencePreschoolExerciseNutritionAgedbody compositionNutrition & DieteticsAdipose Tissue/metabolism; Adolescent; Adult; Aged; Aged 80 and over; Body Composition; Child; Child Preschool; Cross-Sectional Studies; Energy Metabolism; Exercise; Female; Humans; Male; Middle Aged; Young Adult; age; body composition; doubly labeled water; energy expenditure; physical activity levelbusiness.industryPreventionPhysical activity leveldoubly labeled water3141 Health care scienceCross-Sectional StudiesageLEAN BODY-MASSYOUNGWEIGHTbusinessEnergy Metabolismhuman activities
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Energy balance and life cycle assessment of small size residential solar heating and cooling systems equipped with adsorption chillers

2017

Abstract Solar heating and cooling systems for space heating and cooling are experiencing a growing trend and interest. However, the actual energy and environmental performance of small/medium size installations is not clearly foreseeable. In this paper, an analysis of such systems using adsorption chillers in different European climates is presented. Solar systems have been simulated in TRNSYS and compared to a conventional system employing a vapour compression unit. The results have been used for a Life Cycle Assessment (LCA) study, determining the potential impact during the whole life of the system, from raw materials supply to its end-of-life. The LCA has been carried out by using the …

ChillerSolar SystemAdsorption chillers; Global warming potential; Life cycle assessment; Solar heating and cooling; Renewable Energy Sustainability and the Environment; Materials Science (all)Settore ING-IND/11 - Fisica Tecnica AmbientaleRenewable Energy Sustainability and the Environmentbusiness.industry020209 energyEnergy agencyGlobal warming potentialEnergy balance02 engineering and technologyTRNSYSRaw materialSolar heating and coolingLife cycle assessmentAdsorptionAdsorption chillers0202 electrical engineering electronic engineering information engineeringEnvironmental scienceGeneral Materials ScienceProcess engineeringbusinessLife-cycle assessmentSolar heating and cooling Life cycle assessment Global warming potential Adsorption chillers
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Multicriteria-Oriented Optimization of Building Energy Performances: The Annex 72 IEA-EBC Experience

2021

International audience; This chapter describes the research experience of the International Energy Agency-Energy in Buildings and Communities Programme Annex 72 members on the application of multi-objective optimization processes for the selection of design or retrofit actions that allow for improving different aspects (energy, environmental, economic, etc.) of buildings in a life cycle perspective. Thirteen case studies were examined focussing on methodologies, applications and results and deriving generic conclusions and guidelines for building designers and decision-makers.

OptimizationArchitectural engineeringSettore ING-IND/11 - Fisica Tecnica AmbientaleComputer science020209 energyLife cyclePerspective (graphical)Energy agencyEnergy performanceBuilding energy02 engineering and technology010501 environmental sciencesEnvironmental impactsEnergy performance01 natural sciences7. Clean energy[SPI]Engineering Sciences [physics]11. Sustainability0202 electrical engineering electronic engineering information engineeringBuildings Energy performance Environmental impacts Life cycle OptimizationBuildingsEnergy (signal processing)Selection (genetic algorithm)0105 earth and related environmental sciences
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A Simplified LCA Tool for Solar Heating and Cooling Systems

2016

Abstract This paper presents a user-friendly Life Cycle Assessment tool, which aims to support researchers, designers and decision-makers in evaluating the life cycle energy and environmental advantages related to the use of solar heating and cooling (SHC) systems in substitution of conventional ones, considering specific climatic conditions and building loads. The tool was developed within the Task 48 “Quality Assurance & Support Measures for Solar Cooling Systems”, promoted by the International Energy Agency in the framework of the SHC Programme.

energy and environmental performancesEngineeringSettore ING-IND/11 - Fisica Tecnica Ambientalebusiness.industryLCA020209 energySubstitution (logic)Energy agency02 engineering and technologyenergy and environmental performanceSHC systemsTask (project management)Solar air conditioningEnergy(all)SHC system0202 electrical engineering electronic engineering information engineeringSystems engineeringbusinessQuality assuranceLife-cycle assessmentEnergy (signal processing)Simulationpayback time indices.Energy Procedia
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