RNN-based Forecasting of Indoor Temperature in a Naturally Ventilated Residential Building

This work addresses the effect of using thermochromic paints in residential buildings. Two different thermochromic paint types were considered: One that changes properties through a step transition at a certain temperature, and another that changes properties in a gradual/linear manner throughout a temperature range. The studied building was a two-floor villa, virtually simulated through a digital model with and without thermal insulation, and considering thermochromic paints applied both on external walls and on the roof. The performance assessment was done through the energy use for heating and cooling (in conditioned mode), as well as in terms of the indoor temperature (in free-floating mode). Three different cities/climates were considered: Porto, Madrid, and Abu Dhabi. Results showed that energy savings up to 50.6% could be reached if the building is operated in conditioned mode. Conversely, when operated in free-floating mode, optimally selected thermochromic paints enable reductions up to 11.0 °C, during summertime, and an increase up to 2.7 °C, during wintertime. These results point out the great benefits of using optimally selected thermochromic paints for obtaining thermal comfort, and also the need to further develop stable and cost-effective thermochromic pigments for outdoor applications, as well as to test physical models in a real environment.

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The Design and Thermal Comfort Test for North Shannxi Green Cave Dwelling

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.174-177.3207 ◽

2012 ◽

Vol 174-177 ◽

pp. 3207-3211

Author(s):

Hong Xia Yang ◽

Tie Hu Duan ◽

Yan Hong Li

Keyword(s):

Thermal Comfort ◽

Delay Time ◽

Residential Building ◽

Building Design ◽

Temperature Wave ◽

Test Time ◽

Seasonal Temperature ◽

Indoor Temperature ◽

Northern Shaanxi ◽

Design Style

To overcome the traditional cave dwelling lacks, we have designed a green cave dwelling area with a safe structure, improved infrastructure, fluent ventilation, good light in northern Shaanxi, which inherited simple ecology in design for traditional cave, integrated modern residential building design style, and increased necessary sanitation. By compared a traditional cave, the results show that the indoor temperature 9°C between the peaks and valleys of Northern Green cave dwelling when the outside temperature difference is 24°C within the test time, and seasonal temperature wave delay time is about 12d. The thermal comfort same as the traditional cave dwellings’.

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EFFECT OF DIFFERENT TYPES OF PAINT TO RESIDENTIAL BUILDING

Journal of Civil Engineering Science and Technology ◽

10.33736/jcest.306.2016 ◽

2016 ◽

Vol 7 (2) ◽

pp. 68-74

Author(s):

Nurshafina Sharkawi ◽

Azhaili Baharun

Keyword(s):

Climate Change ◽

Energy Savings ◽

Residential Building ◽

Outdoor Temperature ◽

Energy Usage ◽

Data Logger ◽

Indoor Temperature ◽

Temperature Performance ◽

Different Types ◽

Illuminance Level

In recent years, Malaysia has experienced climate change that leads to the higher consumption of energy dueto the increasing outdoor temperature that affects indoor discomfort conditions. Paints were found to be the insulationmaterial that is increasingly important because of their benefits in terms of thermal comfort and energy savings. Therefore,the aim of this study is to determine the effect of different types of paint to the residential building. Two types of paints wereapplied on indoor walls of identical room and their performance was compared. The equipment used to measure theperformance includes data logger and thermocouple for temperature performance and lux meter for illuminationperformance. The experiments consider the impacts of paints on interior surface temperature, wall orientation, indoor airtemperature and the illuminance level. The result shows that the air temperature of the room was brought down considerablyat about 1.9°C by implementing the reflecting paint on the indoor walls. The most significant effect is on the surfacetemperature with the highest temperature reduction of about 2.8°C which occurs at west wall after the application ofreflective paint that makes it as the best location to use reflective paint. For illumination, the results show that reflective paintgives significant effect compare to energy saving paint with the highest illuminance level of 392 lux. With the application ofreflective paint, the indoor temperature is improved and thus minimized the energy usage. Reflective paint has also presentedthe ability to reduce the indoor temperature, the effective wall orientation when applying it and improves the illuminancelevel of indoor building.

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Assessment of Daylight into the Residential Building According to the Floor Levels for Hot and Dry Climatic Zone

Journal of Architectural Environment & Structural Engineering Research ◽

10.30564/jaeser.v2i2.376 ◽

2019 ◽

Vol 2 (2) ◽

Author(s):

Trupti Jagdeo Dabe

Keyword(s):

Energy Consumption ◽

Residential Building ◽

Central India ◽

Field Measurements ◽

Building Design ◽

The Other ◽

Climatic Zone ◽

Optimum Level ◽

Simulation Experiments ◽

Indoor Temperature

It is very important to use the daylight in the building design, which is allowed by the windows into the buildings, to reduce the energy consumption. However, on the other hand, the performance of daylight varies according to the floor levels of the building. This research focused on the investigation of the correlation between the performance of daylight and window areas according to floor levels through field measurements and simulation experiments in the residential building. The aim of this research is to derive the adequate window areas according to the floor levels with respect to the orientation of the residential building to achieve the optimum level of daylight and indoor temperature in the livable areas of a residential building. The case selected is residential building from Nagpur region, of Central India. It has a hot and dry climate. The evaluation of daylight level has been done with selected parameters like percentages of Carpet Area to Window Ratio (CAWR) and Orientation by using daylight metrics, namely Useful Daylight Illuminance (UDI) (with Daysim and Radiance analysis tools plug-in Ecotect 2011 software). The findings of this research are the adequate area of window according to floor levels with respect to the orientation in the livable areas of the residential building.

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Total Solar Reflectance Optimization of the External Paint Coat in Residential Buildings Located in Mediterranean Climates

Energies ◽

10.3390/en13112729 ◽

2020 ◽

Vol 13 (11) ◽

pp. 2729

Author(s):

Tiago Souto ◽

Margarida Almeida ◽

Vítor Leal ◽

João Machado ◽

Adélio Mendes

Keyword(s):

Thermal Performance ◽

Energy Savings ◽

Residential Buildings ◽

Thermal Characteristics ◽

Residential Building ◽

Building Envelope ◽

R Software ◽

Indoor Temperature ◽

Solar Reflectance ◽

Parametric Studies

This work addresses the effect of the total solar reflectance (TSR) value of paints applied in residential buildings upon their thermal performance. A semi-detached residential building was modeled in the ESP-r software, and taken as the basis for parametric studies which assessed the effects of variations in (i) the TSR values; (ii) the thermal characteristics of the building envelope; (iii) the location/climate; and: (iv) the way how the indoor temperature is controlled. The parametric studies were used to find optimal TSR values for each combination of Location + Building envelope characteristics (mainly the existence of thermal insulation). It was concluded that paints having a carefully chosen TSR value lead to better indoor thermal temperatures if the buildings have no mechanical heating or cooling, or to energy savings of up to 32% if they do.

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Analysis of the Influence that Residential Building Indoor Temperature Controls for Heating Energy Consumption

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.90-93.3033 ◽

2011 ◽

Vol 90-93 ◽

pp. 3033-3038

Author(s):

Yue Ren Wang ◽

Jing Zhang ◽

Cong Xue ◽

Nan Wu

Keyword(s):

Energy Saving ◽

Residential Building ◽

Domestic Architecture ◽

Decision Makers ◽

Economic Conditions ◽

Indoor Temperature ◽

Energy Saving Potential ◽

Heat Metering ◽

Energy Consumptions ◽

Heating Energy Consumption

By using household heat metering system，people can control indoor temperature according to their economic conditions and the requirement of thermal comfort. In this paper, DeST-h is used to simulate the energy consumptions of architecture heating in different temperature, which compare to the situation that not use temperature control simulation, to analysis the heating energy saving potential in domestic architecture in Shenyang. So as to develop people’s consciousness of energy saving, and to provide the quantized datat for decision-makers to make relevant policies.

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The Research on Influence of Different Forms of Window on Indoor Natural Ventilation in Residential Building

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.353-356.3109 ◽

2013 ◽

Vol 353-356 ◽

pp. 3109-3113

Author(s):

Xiao Ping Huo ◽

Jia Yu Hu ◽

Dan Li

Keyword(s):

Fluid Dynamics ◽

Numerical Simulation ◽

Temperature Field ◽

Natural Ventilation ◽

Residential Building ◽

Measured Data ◽

Air Velocity ◽

Indoor Temperature ◽

Simulation Results ◽

Maximum Limit

The indoor temperature can be reduced by rationally using natural ventilation in summer. Based on the computational fluid dynamics software of AIRPAK, its convenient to simulate the air velocity field and temperature field of a house. Comparing software numerical simulation results with measured data, we conclude that under the maximum limit of window-wall ratio, the bigger the windows are, the greater the airflow effect is, the better the indoor ventilation effect is.

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Thermal Analysis of Integrating Roof with Phase Change Materials for Energy Saving in Residential Buildings

Academic Journal of Nawroz University ◽

10.25007/ajnu.v7n4a280 ◽

2018 ◽

Vol 7 (4) ◽

pp. 118

Author(s):

Hayder M. Jaffal ◽

Tawfeeq W. Mohammed ◽

Marwa H. Wasmi

Keyword(s):

Energy Consumption ◽

Phase Change ◽

Energy Demand ◽

Phase Change Materials ◽

Residential Buildings ◽

Residential Building ◽

Thermal Conditions ◽

Indoor Temperature ◽

Good Potential ◽

Thermo Physical Properties

The sector of air-conditioning in the residential building consumes most of the total ‎electricity supplied for heating or cooling. Thus it has a major impact on the greenhouse gases and climate. Phase change ‎materials (PCMs) are regarded as a possible solution for reducing the energy consumption of ‎buildings by storing the heat and releasing it in certain times. The present study assists for the ‎utilization of PCMs in the roof of residential building to absorb the heat comes from solar ‎radiation during the daytime and releasing it to the inside nightly. Building considerations ‎as well as thermo-physical properties of PCMs have been taken and measured experimentally. ‎Results have shown that these materials have a good potential for reducing energy demand ‎and satisfy comfortable thermal conditions. The obtained readings, from a rig model built for that purpose, ‎showed that the indoor temperature could increase by 5-9oC in the winter compared to that ‎measured in a traditional one. Furthermore, a simulation program depended on degree-days ‎method explained that the energy consumption could be saved up to 75%. Thus PCMs could ‎submit encouraging suggestions toward the sustainability.‎

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