scholarly journals Impact of Aspect Ratio of Floor Plan on the Energy Performance of Office Rooms in New Delhi, India

2021 ◽  
Vol 795 (1) ◽  
pp. 012035
Author(s):  
Rashmi Kumari
Keyword(s):  
Aspect Ratio ◽  
Energy Performance ◽  
New Delhi ◽  
Floor Plan ◽  
Office Rooms

scholarly journals Effects of the geometry of residential buildings with a sunspace on their energy performance

2019 ◽  
Vol 17 (1) ◽  
pp. 105-118
Author(s):  
Ana Vukadinovic ◽  
Jasmina Radosavljevic ◽  
Amelija Djordjevic ◽  
Nemanja Petrovic
Keyword(s):  
Energy Consumption ◽  
Aspect Ratio ◽  
Shape Factor ◽  
Residential Buildings ◽  
Dynamic Modelling ◽  
Building Design ◽  
Energy Performance ◽  
Total Consumption ◽  
Heating And Cooling ◽  
Heating Energy Consumption

The increase in energy consumption in building design and construction and the issues related to environmental protection have steered many current researchers toward examining the ways to reduce total CO2 emissions, which resulted in the development of various measures to increase energy efficiency. One measure for more cost-efficient and rational use of energy resources in individual residential buildings is the application of passive solar systems with a sunspace. This paper presents the effects of the shape factor of a residential building with a passive sunspace on the total consumption of heating and cooling energy. The total amount of energy required for building heating and cooling was calculated by means of dynamic modelling using EnergyPlus software. The simulations were run according to the meteorological parameters for the city of Nis. For simulation purposes, models of residential buildings with a passive sunspace and square- and rectangle-shaped floors were designed. The variations between the models include different building shape factor, floor geometry, surface area of the southern fa?ade, and glazing percentage, i.e. window-to-wall ratio (WWR). Examination of the models with WWR=20%, WWR=40%, and WWR=60% revealed that the elongated shape of a building with the aspect ratio of 2.25:1, with the longer side of the fa?ade facing south, is the most favourable in terms of heating energy consumption. For the same WWRs, the elongated shape of a building with the aspect ratio of 1.56:1, with the longer side of the fa?ade facing south, is the most favourable in terms of cooling energy consumption. As WWR increases, so does the amount of energy required to cool the building. The biggest increase in heating energy consumption was observed in buildings with the aspect ratio 1:2.25, with the shorter side facing south.

scholarly journals Exploring Cross-Modal Influences on the Evaluation of Indoor-Environmental Conditions

2021 ◽  
Vol 7 ◽  
Author(s):  
Christiane Berger ◽  
Ardeshir Mahdavi
Keyword(s):  
Environmental Factors ◽  
Experimental Approach ◽  
Past Research ◽  
Energy Performance ◽  
Short Term ◽  
Energy Performance Of Buildings ◽  
Parametric Studies ◽  
Term Basis ◽  
Human Participants ◽  
Office Rooms

The comfort requirements of occupants influence indoor-environmental factors and energy performance of buildings. Occupants are typically exposed to a multitude of indoor-environmental factors, including a variety of different thermal, auditory, visual, and air quality conditions. However, the bulk of past research and derivative indoor-environmental codes and standards concerning the comfort of occupants address the multiple indoor-environmental stimuli in isolation. Starting from a brief review of past research on multi-perceptual indoor-environmental assessments of occupants, the present study pursues an experimental approach to explore the potential cross-modal effects on the evaluation of indoor-environmental thermal, visual, and acoustic aspects. In this context, a laboratory space including two adjacent identical mock-up office rooms was used to conduct multi-aspect parametric studies with human participants. Different thermal, visual, and auditory conditions were maintained in these two units. In the course of the present study, 296 participants were exposed, on a short-term basis, to different combinations of thermal, visual, and auditory conditions. The experiments were intended to explore if the evaluation of one aspect of the indoor environment could be influenced by differences in the values pertaining to the other aspects. The experimental results are presented and discussed, including their limitations.

scholarly journals Light versus Energy Performance of Office Rooms with Curtain Walls: A Parametric Study

2014 ◽  
Vol 62 ◽  
pp. 462-471 ◽  
Author(s):  
Valerio R.M. Lo Verso ◽  
Valentina Serra ◽  
Luigi Giovannini ◽  
Simone Iennarella
Keyword(s):  
Parametric Study ◽  
Energy Performance ◽  
Office Rooms

scholarly journals Impact of space layout on energy performance of office buildings coupling daylight with thermal simulation

2019 ◽  
Vol 111 ◽  
pp. 03077 ◽  
Author(s):  
Tiantian Du ◽  
Sabine Jansen ◽  
Michela Turrin ◽  
Andy van den Dobbelsteen
Keyword(s):  
Architectural Design ◽  
Energy Use ◽  
Building Energy ◽  
Energy Performance ◽  
Thermal Simulation ◽  
Floor Plan ◽  
Building Energy Performance ◽  
Artificial Lighting ◽  
Space Layout ◽  
The Impact

Space layout design is one of the most important phases in architectural design, and current studies have shown that it can affect building energy performance. However, its influence has not been quantified. This paper aims at investigating the impact of space layouts on building energy performance. We use the floor plan of an office building in the Netherlands as reference, and propose eleven space layouts based on the reference. Calculations are performed with the tools Honeybee and Ladybug in Grasshopper, which are developed based on Daysim and EnergyPlus, to simulate lighting, cooling and heating demand of these layouts. In addition, we couple daylight with thermal simulation, by importing the artificial lighting schedule calculated in Daysim to EnergyPlus. The result shows that the heating demand of the worst layout is 12% higher than the best layout, the cooling demand of the worst layout is 10% higher than the best layout, and the lighting demand of the worst layout is 65% higher than the best layout. The total final energy use of the worst layout is 19% higher than the best layout.

scholarly journals Analysis of Energy Performance on Envelope Ratio Exposed to the Outdoor

2018 ◽  
Vol 2018 ◽  
pp. 1-10 ◽  
Author(s):  
Hong Soo Lim ◽  
Gon Kim
Keyword(s):  
Energy Consumption ◽  
Volume Ratio ◽  
Building Energy ◽  
Energy Performance ◽  
Cooling Load ◽  
Floor Plan ◽  
Building Energy Performance ◽  
Heating Load ◽  
New Equation

The shape of a building largely contributes to its energy consumption. The current study utilized metrics of surface-to-volume ratio, surface-to-floor ratio, area-to-perimeter ratio, and volume ratio to evaluate building energy performance. Also, the paper focused on the relation between the air-conditioned room and non-air-conditioned room. This approach affects both the design stages of the floor plan and the main designing factors that decide which spaces would become air-conditioned spaces such as those mostly occupied by residents or non-air-conditioned space such as staircases and elevators. The heating load and cooling load were calculated using the new equation based on the location of non-air-conditioned spaces and envelope ratio facing the outdoor. Both the width-depth ratio and envelope ratio were analyzed using the IES_V.E (Integrated Environmental Solutions Virtue Environment) program. It turns out that, as the non-air-conditioned spaces increase, both heating load and cooling load were reduced.

scholarly journals Impact of Phase Change Material (PCM) glazing on the energy consumption and solar radiation transmission in an office room located in a semi-arid climate: Analysis of a real-scale experiment

2021 ◽  
Vol 2069 (1) ◽  
pp. 012118
Author(s):  
Daniel Uribe ◽  
Sergio Vera
Keyword(s):  
Energy Consumption ◽  
Solar Radiation ◽  
Phase Change ◽  
Energy Performance ◽  
Arid Climate ◽  
High Solar Radiation ◽  
Scale Experiment ◽  
Office Rooms ◽  
Real Scale ◽  
Semi Arid

Abstract Phase Change Materials (PCMs) are materials with high latent heat. When integrated into the glazing, they arise as an innovative strategy to improve thermal performance and provide thermal inertia in office buildings with a lack of opaque. Climates with high solar radiation and great temperature variation between day and night are especially interesting because PCM glazing can vastly improve these buildings’ energy performance. Then, this paper aims to analyze the energy performance of an office room with PCM glazing compared to a reference room with double-clear glazing, in a semi-arid climate. A real-scale experiment was carried out for a year in two office rooms located in Santiago, Chile. The analyses include energy consumption of the HVAC system to keep the interior temperature of the room in the comfort range and the solar radiation transmitted through the windows. Results are presented for three representative weeks of summer, mid-season and winter. An important reduction of the solar radiation transmitted was achieved in the PCM glazing in respect to the double-clear glazing when the phase change occurs, and a decrease of the energy consumption of cooling and heating mainly for sunny and variable days was found.

scholarly journals Effects of the orientation of residential buildings with a sunspace on their energy performance and the emission of CO2

Tehnika ◽  
2020 ◽  
Vol 75 (6) ◽  
pp. 563-570
Author(s):  
Ana Vukadinović ◽  
Jasmina Radosavljević ◽  
Amelija Đorđević
Keyword(s):  
Aspect Ratio ◽  
Total Energy ◽  
Greenhouse Gas ◽  
Energy Demand ◽  
Electricity Generation ◽  
Fossil Fuels ◽  
Residential Buildings ◽  
Energy Performance ◽  
Heating And Cooling ◽  
The City

The paper discusses the effects of the orientation of a passive individual building with a sunspace, with different window to wall ratio (WWR = 20%, WWR = 40% and WWR = 60%), on total energy required for heating and cooling of the building. The emission of CO2, as a greenhouse gas, which is generated by the combustion of fossil fuels used for electricity generation utilized for heating the building in the winter and its cooling in the summer months, has also been calculated. The paper utilizes EnergyPlus software to calculate the energy demand of various orientation of the model of a building with a sunspace. The considered model of the building has only the ground floor G and the floor area Po = 92.16 m2, with the floor aspect ratio 2.25:1. The sunspace of the considered model is set along the entire length of the facade of the building and its width is 1.2 m. The research was performed for the city of Nis (43° 19' latitude, 21° 54' longitude, at an altitude of 202 m). When considering the total energy required for heating and cooling and the total annual mass of emitted CO2 pollutant, the research showed that the most favorable orientation of the building is to the south (azimuth of the facade with a sunspace Ps = 185° for the WWR = 20% and WWR = 40% and Ps = 180° for WWR = 60%).

Practical correlation for thermal resistance of 45° sloped-enclosed airspaces with upward heat flow for building applications

2021 ◽  
pp. 174425912110099
Author(s):  
Hamed H Saber
Keyword(s):  
Heat Flow ◽  
Aspect Ratio ◽  
Thermal Resistance ◽  
Accurate Determination ◽  
Thin Sheet ◽  
Energy Performance ◽  
Operating Conditions ◽  
Building Components ◽  
R Value

Assessing the energy performance of building components with enclosed airspaces requires accurate determination of the thermal resistance ( R-value) of the airspaces. The R-value of enclosed airspace depends on its size and orientation, direction of heat transfer through the airspace, and temperatures and emissivities of all surfaces that define the airspace. In previous studies, practical correlations were developed to determine the R-values for vertical enclosed airspaces, horizontal enclosed airspaces with upward heat flow and downward heat flow, and 30° and 45° sloped-enclosed airspaces with downward heat flow. However, to the authors’ best knowledge, there is no such practical correlations available to determine the R-values for wide ranges of dimensions and operating conditions for 30° and 45° sloped-enclosed airspaces with upward heat flow. This paper focused on the thermal performance of 45° sloped-enclosed airspaces with upward heat flow, and the predicted R-values were compared with the R-values provided in ASHRAE Handbook of Fundamentals at different conditions. The dependence of the R-value on the aspect ratio of the enclosed airspaces was also investigated. As well, considerations were given to quantify the potential increase in the R-value of enclosed airspace when a thin sheet having different values of emissivity on both sides was placed in the middle of the airspace. The results showed that depending on the value of the effective emittance and the thickness of the airspace, the R-value could be tripled by incorporating thin a sheet in the middle of the enclosed airspace. Finally, practical correlation were developed to determine the effective R-values of 45° sloped-enclosed airspaces with upward heat flow for wide ranges of aspect ratio, temperature difference across the airspace, mean temperature, and effective emittance. The results showed that the calculated R-values using this correlation were in good agreement with the predicted R-values.

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