Energy Performance Certification of Faculty Buildings in Spain: The gap between estimated and real energy consumption

Herrando, María; Cambra, David; Navarro, Marcos; Cruz, Lucio de la; Millán, Gema; Zabalza, Ignacio

doi:10.1016/j.enconman.2016.04.037

Cited by 120 publications

(66 citation statements)

References 23 publications

(30 reference statements)

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“…One of the disadvantages is the inability to introduce curved geometric shapes, or include the consumption of certain specific equipment besides HVAC, as Herrando et al [68] has noted in a previous study on tertiary buildings.…”

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confidence: 99%

Building Energy Assessment and Computer Simulation Applied to Social Housing in Spain

et al. 2018

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The actual energy consumption and simulated energy performance of a building usually differ. This gap widens in social housing, owing to the characteristics of these buildings and the consumption patterns of economically vulnerable households affected by energy poverty. The aim of this work is to characterise the energy poverty of the households that are representative of those residing in social housing, specifically in blocks of apartments in Southern Europe. The main variables that affect energy consumption and costs are analysed, and the models developed for software energy-performance simulations (which are applied to predict energy consumption in social housing) are validated against actual energy-consumption values. The results demonstrate that this type of household usually lives in surroundings at a temperature below the average thermal comfort level. We have taken into account that a standard thermal comfort level may lead to significant differences between computer-aided energy building simulation and actual consumption data (which are 40-140% lower than simulated consumption). This fact is of integral importance, as we use computer simulation to predict building energy performance in social housing.

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Building Energy Assessment and Computer Simulation Applied to Social Housing in Spain

et al. 2018

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“…According to the new European calls, these innovations will form the backbone of the energy system for 2030-2050 [2], but still a limited widespread of these technologies is registered, mainly due to the reluctance to novelty in the construction market, the additional construction costs and the practical difficulties in the integration in the building. To bridge the gap between research and market, outdoor full-scale facilities, permit to evaluate infield in a 1:1 scale building envelope technologies and to overcome the difference between design phase and real building energy consumptions [3,4]. Moreover a new research line is followed on building envelope with an adaptive behavior.…”

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confidence: 99%

Design of a New Full-scale Facility for Building Envelope Test: FACT (FACade Tool)

et al. 2017

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International audienceIn the last years, several innovations have been introduced in the field of building envelope research and development. To bridge the gap between research and commercially available products, one of the key step is to evaluate these technologies in 1:1 scale and under real boundary conditions. For this purpose, test in outdoor full-scale facilities in complement with dynamic numerical simulation, allow to assess the performances of these complex envelope components, systems or whole building. In this framework a new versatile facility, named FACT (FACade Tool), is under construction in the southeastern France (CEA-INES platform – Le Bourget du Lac) for building envelope components test. This new full-scale tool will be dedicated to infield evaluation of: opaque and transparent elements, lightweight and massive façades, different thickness and heights and different geometry of the indoor environment. In this paper it is presented the design phase, the concept and the working principle of the facility. The layout definition was supported by preliminary simulations and the results of this modelling activity are discussed in order to guide the construction of the facility and to outline the experimental protocol for the next campaigns in FACT

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“…For the current large stock of existing buildings their shape is given and difficult to modify, so efficiency improvement can be reached only at moderate costs by the upgrading of the thermal insulation and the installation of recuperation systems for ventilation as well as the optimal control of microclimate. By doing so, the energy consumption can be minimized while maintaining an acceptable level of comfort [15,16]. However, besides hardware (sensors, controllable actuators, information exchange between zones, computational facilities installed in every HVAC unit) challenges from the control viewpoint are many and include model accuracy, stochasticity in internal heat sources, and quality of forecast of external weather conditions.…”

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confidence: 99%

Model predictive control of indoor microclimate: Existing building stock comfort improvement

Ryzhov

Ouerdane

Gryazina

et al. 2019

Energy Conversion and Management

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Home retrofitting provides a means to improve the basic energy and comfort characteristics of a building stock, which cannot be renewed because of prohibitive costs. We analyze how model predictive control (MPC) applied to indoor microclimate control can provide energy-efficient solutions to the problem of occupants' comfort in a variety of situations principally imposed by external weather and room occupancy. For this purpose we define an objective function for the energy consumption, and we consider two illustrative cases: one building designed and built in recent times with modern HVAC equipment, and one designed and built several decades ago with poor thermal characteristics and no dedicated ventilation system. Our model includes various physical effects such as air infiltration and indoor thermal "inertia mass" (inner walls, floor, ceiling, and furniture), and also accounts for the impact of human presence essentially as heat and CO 2 sources. The influence on the numerical results of forecast horizons and of uncertainties due to inaccuracies in the weather and room occupancy forecasts, are analyzed. As we solve non-convex optimization problems using a linear and a nonlinear optimizer, full MPC performance is compared to both linearized MPC and a standard on/off controller. The main advantage of MPC is its ability to provide satisfactory solutions for microclimate control at

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Energy Performance Certification of Faculty Buildings in Spain: The gap between estimated and real energy consumption

Cited by 120 publications

References 23 publications

Building Energy Assessment and Computer Simulation Applied to Social Housing in Spain

Building Energy Assessment and Computer Simulation Applied to Social Housing in Spain

Design of a New Full-scale Facility for Building Envelope Test: FACT (FACade Tool)

Model predictive control of indoor microclimate: Existing building stock comfort improvement

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