Numerical Assessment of the Performance of Ventilation Strategiesin a Single-Family Building

2011 ◽  
Vol 9 (4) ◽  
pp. 337-349 ◽  
Author(s):  
Juslin Koffi ◽  
Francis Allard ◽  
Akoua Jean-Jacques
Keyword(s):  
Single Family ◽  
Numerical Assessment ◽  
Family Building

scholarly journals Factors affecting the deep renovation of a single-family building – a case study

2021 ◽  
Vol 246 ◽  
pp. 05004
Author(s):  
Triinu Bergmann ◽  
Aime Ruus ◽  
Kristo Kalbe ◽  
Mihkel Kiviste ◽  
Jiri Tintera
Keyword(s):  
Energy Efficiency ◽  
Performance Indicator ◽  
Energy Performance ◽  
Resource Efficiency ◽  
Final Decision ◽  
Air Leakage ◽  
Single Family ◽  
Building Stock ◽  
Thermal Transmittance ◽  
Family Building

The Energy Performance of Buildings Directive (EPBD) of the EU states that Each Member State shall establish a long-term renovation strategy to support the renovation of building stock into a highly energy efficient and decarbonised building stock by 2050. The motive for the study was the dissatisfaction of inhabitants of a single-family building about the heating costs and thermal discomfort. In this study both the emotional and resource efficiency aspects were considered. The structures and technical systems of the studied small dwelling are typical of representing single-family buildings of the Estonian building stock. The initial purpose was to improve the energy efficiency of a building while preserving the existing load bearing structures as much as possible. The research questions were: 1) what the situation before the renovation was, 2) what solutions can be used, 3) making decisions, whether to renovate or demolish. Calculations were carried out – the thermal transmittance of the envelope structures was calculated based on the construction information, and the linear thermal transmittance of geometrical thermal bridges was calculated by using the software Therm. Field tests performed - the thermography and the air leakage of the building was found by standard blower-door test. Specific air leakage rate qE50=11.1 m3/(hm2) was estimated. A renovation solution was offered considering the need for extra insulation and airtightness. The dwelling energy performance indicator was reduced from the existing 279 kWh/(m2y) to 136 kWh/(m2y). For significant energy efficiency improvement deep renovation measures must be used and the question was whether it is rational. Before making the final decision, several aspects have to be considered: 1) emotional – the demolition or renovation of somebody’s home, 2) environmental aspects and resource-efficiency – the possibilities of the reuse of materials.

scholarly journals Annual performance analysis of the PV/T system for the heat demand of a low-energy single-family building

2021 ◽  
Vol 163 ◽  
pp. 1923-1931
Author(s):  
Alina Żabnieńska-Góra ◽  
Navid Khordehgah ◽  
Hussam Jouhara
Keyword(s):  
Performance Analysis ◽  
Low Energy ◽  
Single Family ◽  
Heat Demand ◽  
Family Building ◽  
T System

scholarly journals Impact of Passive Cooling on Thermal Comfort in a Single-Family Building for Current and Future Climate Conditions

Energies ◽  
2020 ◽  
Vol 13 (20) ◽  
pp. 5332
Author(s):  
Krzysztof Grygierek ◽  
Izabela Sarna
Keyword(s):  
Thermal Comfort ◽  
Natural Ventilation ◽  
Energy Use ◽  
Weather Data ◽  
Passive Cooling ◽  
Climate Data ◽  
Single Family ◽  
Climate Conditions ◽  
Building Simulations ◽  
Family Building

Today, there is a great deal of emphasis on reducing energy use in buildings for both economic and environmental reasons. Investors strongly encourage the insulating of buildings. Buildings without cooling systems can lead to a deterioration in thermal comfort, even in transitional climate areas. In this article, the effectiveness of natural ventilation in a passive cooling building is analyzed. Two options are considered: cooling with external air supplied to the building by fans, or by opening windows (automatically or by residents). In both cases, fuzzy controllers for the cooling time and supply airflow control are proposed and optimized. The analysis refers to a typical Polish single-family building. Simulations are made with the use of the EnergyPlus program, and the model is validated based on indoor temperature measurement. The calculations were carried out for different climate data: standard and future (warmed) weather data. Research has shown that cooling with external air can effectively improve thermal comfort with a slight increase in heating demand. However, to be able to reach the potential of such a solution, fans should be used.

scholarly journals Environmental-economic analysis of the heating system for a single-family building

2018 ◽  
Vol 44 ◽  
pp. 00054
Author(s):  
Agnieszka Jachura
Keyword(s):  
Comparative Analysis ◽  
Economic Analysis ◽  
Heat Pump ◽  
Renewable Energy Sources ◽  
Heating System ◽  
Single Family ◽  
Pump System ◽  
Heat Pump System ◽  
Heating Systems ◽  
Family Building

This paper discusses the use of modern and effective heating systems, using fossil fuels and renewable energy sources on the example of a comparative analysis of a gas boiler and heat pump for a single-family building. The aim of the work was to conduct a comparative analysis of heating systems in terms of energy, economy and ecology. The concepts of heating systems based on a gas boiler and a heat pump are proposed. An economic analysis based on the LCC and ecological method was carried out, related to the equivalent emission, in order to compare the degree of environmental nuisance of the proposed heat sources. For the building in question, a more advantageous solution was the use of a system based on a condensing gas boiler. The economic analysis shows that in the assumed life cycle (20 years), the total cost for a heating system based on a gas boiler is lower than in the case of a heat pump by 11%. Also, the initial costs in this variant are lower by nearly half compared to the heat pump system. Environmental analyzes have shown lower annual emissions of pollutants and a 6-fold lower equivalent emission for a gas-fired heating system.

Solar Thermal Systems VS. Photovoltaic Systems. Case Study: Single Family Building in Lithuania

2018 ◽  
Author(s):  
Rokas Valancius ◽  
Jurgita Cerneckiene ◽  
Juozas Vaiciunas ◽  
Andrius Jurelionis ◽  
Paris Fokaides
Keyword(s):  
Solar Thermal ◽  
Photovoltaic Systems ◽  
Single Family ◽  
Thermal Systems ◽  
Family Building

scholarly journals Airtightness test of single-family building and calculation result of the energy need for heating in Polish conditions

2018 ◽  
Vol 44 ◽  
pp. 00078 ◽  
Author(s):  
Piotr Kowalski ◽  
Paweł Szałański
Keyword(s):  
Calculation Result ◽  
Residential Buildings ◽  
Air Permeability ◽  
Building Envelope ◽  
Heat Losses ◽  
Single Family ◽  
Calculation Results ◽  
Family Building

The article presents results of air permeability measurements carried out for envelopes of two entire typical single-family residential buildings and separately for envelopes of garages and residential zones of these buildings. The effect of taking into account separate air permeability measurements of building zones on the calculation results of infiltration heat losses and on the energy need for heating is analysed. The calculation results obtained in this way are then compared to calculation results obtained in the case of air permeability measurements of the entire building envelope.

scholarly journals Proposed Method for Probabilistic Energy Simulations for Multi-Family Dwellings

2020 ◽  
Vol 172 ◽  
pp. 25011
Author(s):  
Stephen Burke ◽  
Pär Carling ◽  
Henrik Davidsson ◽  
Kristin Davidsson ◽  
Tomas Ekström ◽  
...  
Keyword(s):  
Energy Use ◽  
Probabilistic Method ◽  
Hot Water ◽  
Zone Model ◽  
Building Performance ◽  
Single Family ◽  
Energy Calculations ◽  
Family Model ◽  
Family Building ◽  
Energy Simulations

As regulations regarding energy use and emissions of CO2 equivalents in buildings become more stringent, the need for more accurate tools and improved methods for predicting these parameters in building performance simulations increases. In the first part of this project, a probabilistic method was developed and applied to the transient energy calculations and evaluated using a single-family dwelling case study. The method was used to successfully predict the variation of the energy use in 26 houses built in the same residential area and with identical building characteristics and services. This project continues the development and testing of the probabilistic method for energy calculations by applying it to a multi-family building. The complexity of the building model increases as the multi-family model consists of 52 zones, compared to the single-zone model used for the single-family dwelling. The multi-family model also includes additional parameters that are evaluated, such as the domestic hot water circulation losses. This paper presents the probabilistic method applied to the building performance simulations used to predict the energy use for the multi-family building and discusses the differences between the previous and new method used in this study.

scholarly journals Potential and importance of multi-family housing individualization

2010 ◽  
Vol 8 (4) ◽  
pp. 361-374 ◽  
Author(s):  
Branislava Stoiljkovic ◽  
Goran Jovanovic
Keyword(s):  
Family Structure ◽  
Housing Quality ◽  
Single Family ◽  
The Family ◽  
Housing Structure ◽  
Special Challenge ◽  
Family Housing ◽  
Family Building ◽  
Family House

Single family housing is for many reasons considered a more favorable form of housing than the multi-family one. Hence, designing of housing in a multi-family housing structure is a special challenge for designers, because it is expected that the dwelling comfort offered by the multi-family structure is as similar to one of living in a house as possible, that is to seek analogies with the family house when designing a multi-family building. There is a number of possible ways to individualize a multi-family building, regarding the apartments, architectonic composition or urban composition, whose realization would contribute to enhancement of multi-family housing quality.

scholarly journals Evaluation of efficiency of acoustic screen with gate

2014 ◽  
Vol 13 (4) ◽  
pp. 185-194
Author(s):  
Karol Pereta ◽  
Lucjan Janas ◽  
Rafał Klich
Keyword(s):  
Indirect Method ◽  
Traffic Noise ◽  
Single Family ◽  
Noise Barriers ◽  
Case Research ◽  
Research Survey ◽  
Proper Design ◽  
Family Building ◽  
Low Efficiency

One of the biggest problems of traffic noise protection is the proper design of noise barriers, their location, length and height. An experimental and analytical efficiency method of traffic noise protection against traffic noise, in the case of a single-family building, has been presented in this paper. The efficiency of this screen has been evaluated by an indirect method. In this case research survey on site has been made. The calculations have been made with the use of three methods. The results of measurements and calculations have been compared. A low efficiency acoustic screen has been demonstrated, whereas its low efficiency mainly resulted from the low height and length. On the basis of the interviews with residents, it can be said that the construction of screens, even those of low efficiency, makes sense.

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