Impact of Meteorological Data Composition on Cost-Optimal Retrofitting Strategy for a Residential Building in a Hot Climate

Building shading devices can improve the thermal comfort in indoor environment, and also reduce cooling and heating energy consumption in dry and hot climate. This study proposes the different kind of window’s fixed shading devices for energy consumption under near-extreme summer and winter conditions by conducting residential building energy simulations in Shiraz climate. Which fixed shading devices optimal configurations that give maximum energy consumption can be used in Shiraz climate. The study was based on modeling-simulation experiments where Ecotect models resented the actual building energy with and without shading devices to reducing heating and cooling load and peak consumption. The results obtained confirmed the accuracy of the model and the suitability of (horizontal, eggcrate and geometrical) of shading devices in reducing the solar gains in summer with reduced blocking of solar radiation in winter. In all cases it has been proven that excessive obstruction may yield an excessive reduction in a range of illuminances between 500 and 2000 lux, increasing lighting energy consumption. At the end results showed that horizontal, geometrical and eggcrate have the best function according to reduce energy and have enough day lighting in the zones in shiraz climate.

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On the possibilities of solar energy usage for heating single-family houses in Poland

E3S Web of Conferences ◽

10.1051/e3sconf/20184900049 ◽

2018 ◽

Vol 49 ◽

pp. 00049

Author(s):

Hanna Jędrzejuk

Keyword(s):

Solar Energy ◽

Carbon Dioxide Emissions ◽

Meteorological Data ◽

Residential Building ◽

Radiation Energy ◽

Energy System ◽

Energy Performance ◽

Single Family ◽

Climate Conditions ◽

Technical Solutions

The paper presents an assessment of the possibility of using solar energy for heating a selected residential building. The influence of the thermal insulation standard of the outer casing and the air tightness of the building on technical solutions with conventional heat sources and a solar energy system was analysed. In Polish climate conditions, especially in November and December, the availability of solar energy is usually insufficient in relation to heating needs. Therefore, it is necessary to store heat when it is to be used for heating. Monthly and yearly periods of heat storage have been considered. The influence of the use of solar radiation energy on the change in the energy performance of the building and on the reduction of carbon dioxide emissions was determined. Characteristics of heating systems and devices [9] as well as generally available meteorological data [5] were used for energy calculations.

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Resilience of a Building to Future Climate Conditions in Three European Cities

Energies ◽

10.3390/en12234506 ◽

2019 ◽

Vol 12 (23) ◽

pp. 4506 ◽

Cited By ~ 4

Author(s):

Virgilio Ciancio ◽

Serena Falasca ◽

Iacopo Golasi ◽

Pieter de Wilde ◽

Massimo Coppi ◽

...

Keyword(s):

Climate Change ◽

Cooling System ◽

Meteorological Data ◽

Residential Building ◽

Building Energy ◽

Future Climate ◽

Weather Data ◽

Intergovernmental Panel ◽

Climate Conditions ◽

European Cities

Building energy need simulations are usually performed using input files that contain information about the averaged weather data based on historical patterns. Therefore, the simulations performed are not able to provide information about possible future scenarios due to climate change. In this work, future trends of building energy demands due to the climate change across Europe were studied by comparing three time steps (present, 2050, and -2080) in three different European cities, characterized by different Köppen-Geiger climatic classes. A residential building with modern architectural features was taken into consideration for the simulations. Future climate conditions were reached by applying the effects of climate changes to current hourly meteorological data though the climate change tool world weather file generator (CCWorldWeatherGen) tool, according to the guidelines established by the Intergovernmental Panel on Climate Change. In order to examine the resilience of the building, the simulations carried out were compared with respect to: peak power, median values of the power, and energy consumed by heating and cooling system. The observed trend shows a general reduction in the energy needs for heating (–46% for Aberdeen, –80% for Palermo, –36% for Prague in 2080 compared to the present) and increase (occurrence for Aberdeen) in cooling requirements. These results imply a revaluation of system size.

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Modelling the overheating risk in an uniform high-rise building design with a consideration of urban context and heatwaves

Indoor and Built Environment ◽

10.1177/1420326x19856400 ◽

2019 ◽

Vol 29 (5) ◽

pp. 671-688 ◽

Cited By ~ 1

Author(s):

Leonardo Habitzreuter ◽

Stefan Thor Smith ◽

Trevor Keeling

Keyword(s):

Climate Change ◽

Environmental Control ◽

Meteorological Data ◽

Tall Buildings ◽

Residential Building ◽

Building Design ◽

Vertical Gradient ◽

Urban Context ◽

High Rise ◽

The Impact

Overheating in buildings is one of the increasing concerns related to climate change and can lead to an increase in heat-related health issues and higher energy consumption due to the use of air conditioning systems. Literature shows that internal conditions and demand on environmental control systems can vary with height within buildings. However, an architectural trend towards highly glazed façades for tall buildings suggests the vertical gradient of performance is not always considered in the design process. By simulating a high-rise residential building in London, a comparative analysis of the overheating risks and daylighting at different levels in the building was conducted. In this study the model was able to consider the influence of surrounding built environment on solar gain and so influence of urban location on overheating risk was taken into account. Simulations were conducted using typical reference years as well as meteorological data for specific heat-wave periods experienced in London and that are expected to become more intense and frequent due to climate change. Passive mitigation options (external shading) are demonstrated to help reduce overheating occurrence by 74%, at the same time the impact of decreased daylighting (30%) is less problematic at higher levels where daylight factor is greater.

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