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Heat and Mass Transfer in Building Energy Performance Assessment

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ISBN: 9783039219261 9783039219278 Year: Pages: 122 DOI: 10.3390/books978-3-03921-927-8 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Technology (General) --- General and Civil Engineering --- Materials
Added to DOAB on : 2020-01-07 09:08:26
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The building industry is influenced by many factors and trends reflecting the current situation and developments in social, economic, technical, and scientific fields. One of the most important trends seeks to minimize the energy demand. This can be achieved by promoting the construction of buildings with better thermal insulating capabilities of their envelopes and better efficiency in heating, ventilation, and air conditioning systems. Any credible assessment of building energy performance includes the identification and simulation of heat and mass transfer phenomena in both the building envelope and the interior of the building. As the interaction between design elements, climate change, user behavior, heating effectiveness, ventilation, air conditioning systems, and lighting is not straightforward, the assessment procedure can present a complex and challenging task. The simulations should then involve all factors affecting the energy performance of the building in questions. However, the appropriate choice of physical model of heat and mass transfer for different building elements is not the only factor affecting the output of building energy simulations. The accuracy of the material parameters applied in the models as input data is another potential source of uncertainty. For instance, neglecting the dependence of hygric and thermal parameters on moisture content may affect the energy assessment in a significant way. Boundary conditions in the form of weather data sets represent yet another crucial factor determining the uncertainty of the outputs. In light of recent trends in climate change, this topic is vitally important. This Special Issue aims at providing recent developments in laboratory analyses, computational modeling, and in situ measurements related to the assessment of building energy performance based on the proper identification of heat and mass transfer processes in building structures.

Energy and Technical Building Systems - Scientific and Technological Advances

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ISBN: 9783039281787 9783039281794 Year: Pages: 220 DOI: 10.3390/books978-3-03928-179-4 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Science (General) --- Physics (General)
Added to DOAB on : 2020-04-07 23:07:09
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Future buildings require not only energy efficiency but also proper building automation and control system functionalities in order to respond to the needs of occupants and energy grids. These development paths require a focus on occupant needs such as good indoor climate, easy operability, and monitoring. Another area to be tackled is energy flexibility, which is needed to make buildings responsive to the price signals of electricity grids with increasing amounts of fluctuating renewable energy generation installed both in central grids and at building sites. This Special Issue is dedicated to HVAC systems, load shifting, indoor climate, and energy and ventilation performance analyses in buildings. All these topics are important for improving the energy performance of new and renovated buildings within the roadmap of low energy and nearly zero energy buildings. To improve energy performance and, at the same time, occupant comfort and wellbeing, new technical solutions are required. Occupancy patterns and recognition, intelligent building management, demand response and performance of heating, cooling and ventilation systems are some common keywords in the articles of this Special Issue contributing to future highly performing buildings with reliable operation.

Keywords

ice rinks --- air distribution solutions --- indoor air temperature gradient --- air handling unit configuration --- building energy efficiency --- building performance simulation --- energy and HVAC-systems in buildings --- energy piles --- validation --- floor slab heat loss --- energy --- computer simulations --- predictive rule-based control --- hourly CO2eq. intensity --- demand response --- energy flexibility --- n/a --- indoor environment quality --- thermal comfort --- personalized ventilation --- fuzzy logic --- environmental impact --- device efficiency --- air pollutant --- multi-households --- solid oxide fuel cell cogeneration system --- end-use energy consumption --- heating --- ventilation and air conditioning (HVAC) --- intelligent system management --- lighting electrical energy --- national electricity grid --- office building --- Photovoltaic system --- simulation --- Simulink® --- deep renovation --- energy retrofit --- detached house --- multi-objective optimization --- greenhouse gas emissions --- heat pump --- genetic algorithm --- occupancy density --- moisture conditions --- energy use --- indoor air quality --- ventilation rate --- KNX --- Neural Network (NN) --- Multilayer Perceptron (MLP) --- Random Tree (RT) --- Linear Regression (LR) --- Cloud Computing (CC) --- Internet of Things (IoT) --- LMS (Least Mean Squares) Adaptive filter (AF) --- gateway --- monitoring --- occupancy --- prediction --- IBM SPSS --- Intelligent Buildings (IB) --- energy savings

Energy Performance and Indoor Climate Analysis in Buildings

Authors: --- ---
ISBN: 9783039213795 9783039213801 Year: Pages: 374 DOI: 10.3390/books978-3-03921-380-1 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Technology (General) --- General and Civil Engineering
Added to DOAB on : 2019-12-09 11:49:16
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HVAC systems, load shifting, indoor climate, and energy and ventilation performance analyses are the key topics when improving energy performance in new and renovated buildings. This development has been boosted by the recently established nearly zero energy building requirements that will soon be in use in all EU Member States, as well as similar long-term zero energy building targets in Japan, the US, and other countries. The research covered in this Special Issue provides evidence of how new technical solutions have worked, in practice, in new or renovated buildings, and also discusses problems and how solutions should be further developed. Another focus is on the more detailed calculation methods needed for the correct design and sizing of dedicated systems, and for accurate quantification of energy savings. Occupant behavior and building operation is also examined, in order to avoid common performance gaps between calculated and measured performance. These topics demonstrate the challenge of high performance buildings as, in the end, comfortable buildings with good indoor climate which are easy and cheap to operate and maintain are expected by end customers. Ventilation performance, heating and cooling, sizing, energy predictions and optimization, load shifting, and field studies are some of the key topics in this Special Issue, contributing to the future of high performance buildings with reliable operation.

Keywords

Jaya algorithm --- smart grid --- optimal energy management --- demand response --- demand side management --- indoor temperature after renovation --- electricity use --- DHW energy use --- user behavior --- standard use --- energy performance modeling --- gray box --- satellite-based solar radiation data --- meteorological reanalysis data --- ISO 52016-1 --- energy efficiency --- HVAC systems --- chiller plants --- chiller performance --- COP --- data-driven analysis --- energy --- building --- ventilation --- cooling --- outdoor air --- air jet --- personalized ventilation --- skin temperature --- CFD --- thermal analysis --- corner impinging jet --- mixing ventilation --- displacement ventilation --- tracer gas --- air exchange effectiveness --- local air change effectiveness --- draught rate --- Monte Carlo method --- ISO 7730 --- TRNSYS --- greenhouse --- indoor temperature uniformity --- multiple sensor nodes --- qualitative control --- corner impinging jet --- corner mixing ventilation --- hybrid displacement device --- heating mode --- thermal comfort --- air exchange effectiveness --- local air change effectiveness --- draught rate, --- downdraught --- smart buildings --- smart readiness indicator --- energy efficiency --- energy performance of buildings directive --- energy flexibility --- load shifting --- demand response --- building energy simulation --- occupant behavior --- energy performance --- indoor climate --- retirement home --- user input data --- condenser evaporative precooling --- rooftop air conditioners --- building energy modelling --- control strategy --- ground source heat pump --- heating power --- sizing --- DHW heating --- space heating --- alternate operation --- daylight --- existing buildings --- daylight factor --- daylight simulations --- daylight survey --- energy efficiency --- student dormitories --- Indoor Environmental Quality (IEQ), Pro-GET-onE H2020 --- in situ measurements --- monitoring measurements --- energy signature --- indoor air quality --- stratification --- basketball hall --- CFD --- field measurement --- single room ventilation unit --- building pressure condition --- stack effect --- wind pressure --- ventilation renovation --- decentralized ventilation unit

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english (3)


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2020 (1)

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