Passive house analysis in terms of energy performance

Mihai, Mirela; Tanasiev, Vladimir; Dincă, Cristian; Badea, Adrian; Vidu, Ruxandra

doi:10.1016/j.enbuild.2017.03.025

Cited by 78 publications

(56 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…as Mihai et al in Bucharest, with earth-to-air heat exchange technology (EAHX) with photovoltaic panels, generating 1,556.5 kWh/year, and a drop in annual energy demand to 13 kWh/m 2 yr [27]. Harkouss, Fardoun, and Biwole, through multi-criteria decision making (MCDM), further refined the technical quantification of thermal insulation and thermal transmittance U values in warm climates at 0.6 W/m 2 K for walls, 0.6 W/m 2 K for ceilings, and 0.5 W/m 2 K for floors [28].…”

Section: Introductionmentioning

confidence: 99%

The Passivhaus Standard in the Spanish Mediterranean: Evaluation of a House’s Thermal Behaviour of Enclosures and Airtightness

et al. 2019

View full text Add to dashboard Cite

Few houses have been built in the Spanish Mediterranean in accordance with the Passivhaus (PH) standard. This standard is adapted to the continental climates of Central Europe and thorough studies are necessary to apply this standard in Spain, especially in the summer. High relative air humidity levels in coastal areas and solar radiation levels of west-facing façades require adapted architectural designs, as well as greater control of air renewal and dehumidification. A priori, energy consumptions undergo big variations. In this study, the construction of a single-family house in the Spanish Levante was analysed. All enclosure layers were monitored using sensors of surface temperature, solar radiation, indoor and outdoor air temperature, relative humidity, and air speed. The thermal behaviour of the façade enclosure and air infiltration through the enclosure were examined using the blower door test and impacts on annual energy demand were quantified. Using simulation tools, improvements are proposed, and the results are compared with examples of PH housing in other geographical areas. The annual energy demand of PH housing was 69.19% below the usual value for buildings in the Mediterranean region. Very thick thermal insulation and low values of airtightness could be applied to the envelope, which would work very well in the winter. These technique solutions could provide optimal comfort conditions with a well-designed air conditioning system in summer and low energy consumption.

show abstract

Section: Introductionmentioning

confidence: 99%

The Passivhaus Standard in the Spanish Mediterranean: Evaluation of a House’s Thermal Behaviour of Enclosures and Airtightness

et al. 2019

View full text Add to dashboard Cite

show abstract

“…The Portuguese building described by Erhorn and Erhorn-Klutting [17], is not residential, and data provided for Malta are calculated with an energy performance certification software. Mihai et al present energy use for heating (13.12 kWh/m 2 /year) and PV production (11.12 kWh/m 2 /year) for a passive house located in Bucharest (Cfa -under the Köppen climate classification) [19]. Mutani et al [20] report energy need for heating and global energy use data for ten residential nZEBs built in Piedmont (North of Italy), all equipped with air-to-air or air-to-water heat pumps.…”

Section: Introductionmentioning

confidence: 99%

Yearly operational performance of a nZEB in the Mediterranean climate

Causone

Tatti

Pietrobon

et al. 2019

Energy and Buildings

View full text Add to dashboard Cite

Over the last decades, the reduction of the energy use in the building sector has become a topic of major investigation and policy development worldwide. Guidelines have been defined to drive governments and building construction stakeholders towards the retrofit of the existing building stock and to the construction of new highperformance buildings. However, availability of operational data is often limited, especially when it comes to high performance buildings in warm climates, although it is essential to define design approaches targeted to energy efficiency, to design smart energy grids and demand-response oriented energy programs. Buildings, such as living laboratories, may offer opportunities to implement and develop energy databases, to provide benchmarks and to study occupant behaviour under different operational conditions. The paper investigates the energy and thermal comfort performance of a residential building in the Mediterranean climate. The building, certified as Passivhaus and equipped with an advanced monitoring system, allows to test different control strategies, to study occupant behaviour and to provide real time operational data. In particular, the data analysis showed a positive energy balance on yearly basis, i.e. an energy use of 59.7 kWh/m 2 net/year vs. an on-site energy generation of 76.0 kWh/m 2 net/year. The energy breakdown highlighted, that energy uses related to user behaviour and comfort requests account for about 72 % of the total energy use, confirming that occupant behaviour is one of the major drivers of the operational energy use (and the related services) in high performance buildings.

show abstract

“…On 17 November 2009 the European Parliament and the Council fixed 2020 as a deadline for all new buildings to be nZEBs [5]. The European Union has decided that by year 2020 the building energy consumption will be cut down by 20% and greenhouse gas emission by up to 20% [6]. For the first time, the Ministry of Housing and Urban-Rural Development Evidently, low and nearly zero energy buildings will need more careful design to optimize the performance design parameters.…”

Section: Introductionmentioning

confidence: 99%

“…This nZEB possesses a high thermal inertia which in a way protects the indoor environment from the invasion of outdoor disturbance so as to maintain indoor temperature at a comfortable level for occupants, which further reduces the energy consumption induced by the requirement for heating. The energy demand of passive house in Bucharest was simulated using the energyplus software [6]. Building characteristics and system description are similar to benchmark building, including climatic conditions.…”

mentioning

confidence: 99%

Optimization of Performance Parameter Design and Energy Use Prediction for Nearly Zero Energy Buildings

Guo

Chi

et al. 2018

Energies

View full text Add to dashboard Cite

Optimizing key parameters with energy consumption as the control target can minimize the heating and cooling needs of buildings. In this paper we focus on the optimization of performance parameters design and the prediction of energy consumption for nearly Zero Energy Buildings (nZEB). The optimal combination of various performance parameters and the Energy Saving Ratio (ESR)are studied by using a large volume of simulation data. Artificial neural networks (ANNs) are applied for the prediction of annual electrical energy consumption in a nearly Zero Energy Building designs located in Shenyang (China). The data of the energy demand for our test is obtained by using building simulation techniques. The results demonstrate that the heating energy demand for our test nearly Zero Energy Building is 17.42 KW·h/(m 2 ·a). The Energy Saving Ratio of window-to-wall ratios optimization is the most obvious, followed by thermal performance parameters of the window, and finally the insulation thickness. The maximum relative error of building energy consumption prediction is 6.46% when using the artificial neural network model to predict energy consumption. The establishment of this prediction method enables architects to easily and accurately obtain the energy consumption of buildings during the design phase.Energies 2018, 11, 3252 2 of 23 has made a clear demand of nZEBs development, which envisages huge market demand and the broad prospects in China of promoting nZEBs actively, and the goal is 10 million m 2 by the end of 2020 compared with 500 thousand m 2 now. nZEBs show high thermal comfort and low energy consumption. The required energy in nZEB can be provided from a variety of renewable energy resources including energy from renewable sources produced on-site nearby. International Energy Agency joint Solar Heating and Cooling Task 40 and Energy Conservation in Buildings and Community systems Annex 52 titled "Towards Net Zero Energy Solar Buildings" is making an international effort on the standardization of the Net Zero Energy Building definition [7].The parametric design of the program stage plays a key role in the shape and performance of the building, which is also the source of the building's energy-saving design. The energy saving potential that exists in decision making at different stages of design will progressively reduce as construction progresses [8]. There are many factors that influence the energy consumption of buildings, during architectural concept design. The building characteristics include parameters relating to geometry, services, glazing, activity, site, construction year, and weather.Wilde [9] surveyed 67 buildings, where 57% of the technical measures needed to be implemented during the planning and design stage in the application of 303 green building technologies. Since the potential of building energy conservation can be previewed and examined flexibly on the data of heating and cooling loads obtained through simulations at design stage, the optimization of building envelops through parametric de...

show abstract

Passive house analysis in terms of energy performance

Cited by 78 publications

References 16 publications

The Passivhaus Standard in the Spanish Mediterranean: Evaluation of a House’s Thermal Behaviour of Enclosures and Airtightness

The Passivhaus Standard in the Spanish Mediterranean: Evaluation of a House’s Thermal Behaviour of Enclosures and Airtightness

Yearly operational performance of a nZEB in the Mediterranean climate

Optimization of Performance Parameter Design and Energy Use Prediction for Nearly Zero Energy Buildings

Contact Info

Product

Resources

About