Effect of Using Local Insulation Materials on the Indoor Temperature of Residential Buildings at Iraq

In this paper, numerical study has been conducted for using PCM as thermal insulation materials by incorporating it with layers of walls and ceiling of buildings. The effect of PCM and its role in improvement of thermal performance and thermal comfort is numerically studied. ESP-r software program has been used for numerical simulation in this paper. Energy plus weather database software was used to create climate date for Kut city (32.5 oN 45.8 oE) that used for simulation in this study. Two identical rooms were inserted in software ESP-r with dimensions (1.5m*1.5m*1m), the first is standard room for comparison and the second is test room for experimenting. Many cases were studied according to the thickness of the PCM and according to the orientation (North wall, South wall, East wall, West wall, and ceiling). Results obtained showed a reduction in indoor temperature of the zone and the reduction in the cooling load and as a result saving in electricity consumption with using PCM as insulation materials.

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On the impact of user behaviour on heating energy consumption and indoor temperature in residential buildings

Energy and Buildings ◽

10.1016/j.enbuild.2021.111657 ◽

2021 ◽

pp. 111657

Author(s):

Marina Laskari ◽

Rosa-Francesca de Masi ◽

Stavroula Karatasou ◽

Mat Santamouris ◽

Margarita-Niki Assimakopoulos

Keyword(s):

Energy Consumption ◽

Residential Buildings ◽

Indoor Temperature ◽

User Behaviour ◽

Heating Energy Consumption ◽

The Impact

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Indoor Temperature Validation of Low-Income Detached Dwellings under Tropical Weather Conditions

Climate ◽

10.3390/cli7080096 ◽

2019 ◽

Vol 7 (8) ◽

pp. 96 ◽

Cited By ~ 1

Author(s):

R. Alexis Barrientos-González ◽

Ricardo E. Vega-Azamar ◽

Julio C. Cruz-Argüello ◽

Norma A. Oropeza-García ◽

Maritza Chan-Juárez ◽

...

Keyword(s):

Case Studies ◽

Low Income ◽

Residential Buildings ◽

Electricity Consumption ◽

Environmental Parameters ◽

Weather Conditions ◽

Environmental Data ◽

Mean Bias Error ◽

Bias Error ◽

Indoor Temperature

Urban territorial expansion generated in the last decades has brought a series of consequences, such as the variation between urban and suburban weather conditions affecting indoor temperature and increasing electricity consumption derived from the use of cooling systems. Current approaches of simulation models in residential buildings use indoor environmental data for carrying out validations to propose hygrothermal comfort alternatives for the mitigation of the effects of the external environmental conditions on the interior spaces of dwellings. In this work, an hourly evaluation of both indoor and outdoor environmental parameters of two case studies in a tropical climate was carried out, by means of a whole-building simulation approach tool during a week representative of the warmest period of the year. The integration of the collected environmental data in the theoretical model allowed us to reduce the error range of the estimated indoor temperature with results in normalized mean bias error between 7.10% and −0.74% and in coefficient of variation of the root mean square error between 16.72% and 2.62%, in the different indoor zones of the case studies. At the same time, the energy assessment showed a difference of 33% in Case 1 and −217% in Case 2 for final electricity consumption.

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A neuro–fuzzy model for prediction of the indoor temperature in typical Australian residential buildings

Energy and Buildings ◽

10.1016/j.enbuild.2009.02.002 ◽

2009 ◽

Vol 41 (7) ◽

pp. 703-710 ◽

Cited By ~ 21

Author(s):

Haitham Alasha’ary ◽

Behdad Moghtaderi ◽

Adrian Page ◽

Heber Sugo

Keyword(s):

Residential Buildings ◽

Fuzzy Model ◽

Indoor Temperature ◽

Neuro Fuzzy

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SELECTION OF THE INSULATION MATERIALS FOR REFURBISHMENT PURPOSES

Engineering Structures and Technologies ◽

10.3846/2029882x.2017.1339296 ◽

2017 ◽

Vol 9 (2) ◽

pp. 104-115 ◽

Cited By ~ 2

Author(s):

Irene LILL ◽

Loreta KANAPECKIENE ◽

Laura TUPENAITE ◽

Jurga NAIMAVICIENE

Keyword(s):

Material Selection ◽

Residential Buildings ◽

Assessment Method ◽

Diffusion Resistance ◽

Insulation Material ◽

Insulation Materials ◽

Increase Energy Efficiency ◽

Water Vapour Diffusion ◽

Building Facades ◽

Selection Of

Refurbishment of the building facades of residential buildings, including insulation, is often considered as the most energy efficient renovation measure with the largest potential. One of the solutions to increase energy efficiency is the selection of the appropriate insulation materials of the external walls. The article proposes the approach for selection of the insulation material based on SAW multiple criteria assessment method. The proposed methodology is applied for the case of insulation material selection in refurbishment of 12-storey building in Vilnius, Lithuania. Research reveals that rock wool outperforms other materials by thermal conductivity, light weigh, water vapour diffusion resistance, highest flammability class, durability and lowest emission of CO2 and is an efficient insulation to be used for sustainable refurbishment solutions.

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Relation between indoor thermal environment and renovation in liege residential buildings

Thermal Science ◽

10.2298/tsci1403889s ◽

2014 ◽

Vol 18 (3) ◽

pp. 889-902 ◽

Cited By ~ 11

Author(s):

Manoj Singh ◽

Sadhan Mahapatra ◽

Jacques Teller

Keyword(s):

Indoor Environment ◽

Thermal Environment ◽

Residential Buildings ◽

Area Ratio ◽

Building Envelope ◽

Efficiency Improvement ◽

Environment Monitoring ◽

Indoor Temperature ◽

Indoor Thermal Environment ◽

Energy Efficiency Improvement

Indoor thermal environment monitoring has been done in 20 residential buildings of Liege city followed by questionnaire based comfort survey amongst the occupants of 85 houses in order to record their preference and expectations about indoor thermal environment in winter and spring season. It is found from the analysis that change of glazing has a minimum or even sometimes an adverse effect on the existing indoor environment due to the absence of proper insulation of the rest of the building envelope. It is observed that in winter there is a sudden drop in indoor temperature and also overheating in summer. This is due to unplanned installation of glazing which actually increases the fenestration area ratio leading to higher indoor temperature fluctuation and causes discomfort. It is also important that the occupant?s preference and expectations as well as overall assessment of indoor environment needs to be consider towards energy efficiency improvement.

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Thermochromic Paints on External Surfaces: Impact Assessment for a Residential Building through Thermal and Energy Simulation

Energies ◽

10.3390/en13081912 ◽

2020 ◽

Vol 13 (8) ◽

pp. 1912 ◽

Cited By ~ 2

Author(s):

Vasco Granadeiro ◽

Margarida Almeida ◽

Tiago Souto ◽

Vítor Leal ◽

João Machado ◽

...

Keyword(s):

Energy Use ◽

Energy Savings ◽

Residential Buildings ◽

Residential Building ◽

Cost Effective ◽

Physical Models ◽

Indoor Temperature ◽

Heating And Cooling ◽

Step Transition ◽

Linear Manner

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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A Comparative Study on the Performance of BIPV and Mainstream Insulation Materials for the Energy-Efficient Renovation of Existing Residential Buildings in China

10.1007/978-3-030-80034-5_12 ◽

2021 ◽

pp. 161-177

Author(s):

Jing Wang ◽

Xuan Ge ◽

Yijia Miao ◽

Siu Yu Stephen Lau

Keyword(s):

Comparative Study ◽

Energy Efficient ◽

Residential Buildings ◽

Insulation Materials

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What are the Required Conditions for Heavy Structure Buildings to be Thermally Effective in a Hot Humid Climate?

Journal of Solar Energy Engineering ◽

10.1115/1.1755242 ◽

2004 ◽

Vol 126 (3) ◽

pp. 886-892 ◽

Cited By ~ 10

Author(s):

Isaac G. Capeluto ◽

Abraham Yezioro ◽

Edna Shaviv

Keyword(s):

Air Conditioning ◽

Residential Buildings ◽

Mediterranean Coast ◽

Thermal Mass ◽

Humid Climate ◽

Indoor Temperature ◽

Average Temperature ◽

Temperature Swing ◽

Hot Humid Climate ◽

Night Ventilation

We calculate the influence of thermal mass and night ventilation on the reduction of the maximum indoor temperature in summer in residential buildings without using air-conditioning. The results are given for different locations in the hot-humid Mediterranean climate of Israel. We found that the maximum obtained indoor temperature reduction depends linearly on the temperature difference between day and night at the site. The results obtained show that one can predict the indoor temperature decrease, due to the thermal mass and night ventilation, from the simple and available data of the long term average temperature swing of the site, which is a common available data. The conclusion is that in the hot-humid climate of the Mediterranean coast, high thermal mass with night ventilation is effective for residential buildings with no air-conditioning provided the temperature swing is above 5°C, which is in general the case in this climate.

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Experimental Study on the Thermal Conductivity of Thermal Insulation Materials Used in Residential Buildings

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.1025-1026.535 ◽

2014 ◽

Vol 1025-1026 ◽

pp. 535-538

Author(s):

Young Sun Jeong

Keyword(s):

Thermal Conductivity ◽

Thermal Insulation ◽

Building Materials ◽

Residential Buildings ◽

Building Envelope ◽

Expanded Polystyrene ◽

Exterior Wall ◽

Insulation Materials ◽

Design Documents ◽

Materials Used

The most basic way to keep comfortable indoor environments for a building’s occupants and save energy for space heating and cooling in residential buildings is to insulate the building envelope. Among the building materials to be used, thermal insulation materials primarily influence thermal performance. In particular, the type, thermal conductivity, density, and thickness of heat insulator, are important factors influencing thermal insulation performance. We investigate the design status of residential buildings which were designed in accordance with the building code of Korea and selected the type of thermal insulation materials applied to the walls of buildings. The present study aims at measuring the thermal conductivity of thermal insulation materials used for building walls of residential buildings. In this study, after collecting the design documents of 129 residential buildings, we investigated the type and thickness of insulation materials on the exterior wall specified in the design documents. As the thermal insulation materials, extruded polystyrene (XPS) board and expanded polystyrene(EPS) board are used the most widely in Korea when designing residential buildings. The thickness of thermal insulation materials applied to the exterior wall was 70mm, most frequently applied to the design. We measured the thermal conductivity and the density of XPS board and EPS board. When the density of XPS and EPS was 30~35 kg/㎥, the thermal conductivity of XPS was 0.0292 W/mK and it of EPS was 0.0316 W/mK.

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