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  • Open Access

    ARTICLE

    Evaluation of Thermal Comfort and Energy Usage for an Enclosed Cavity Indifferent Climatic Zones of India

    Vibhushit Gupta1, Shubham K. Verma2, Sanjeev Anand2, Navin Gupta3, Yatheshth Anand1,*

    Energy Engineering, Vol.118, No.5, pp. 1317-1331, 2021, DOI:10.32604/EE.2021.016732

    Abstract The utilization of energy in building sectors comprises 30–40% of the entire global energy consumption. Most of the energy is being utilized for cooling & heating the buildings. These cooling and heating depend on the nature of climate for different places. In this, the detailed analysis of the building envelope across five areas (viz. Srinagar, Jaisalmer, New Delhi, Thiruvananthapuram and Bangalore) representing different climatic zones had been carried out. Simulations are performed for these locations using eQUEST and ANSYS software. Three of the result output from the eQUEST simulation are used to assess the different cases. These outputs are: total… More >

  • Open Access

    REVIEW

    Performance of Desiccant-Based Cooling Systems in Hot-Humid Climates: A Review

    Maatouk Khoukhi*, Omar Al Khatib

    Energy Engineering, Vol.118, No.4, pp. 875-909, 2021, DOI:10.32604/EE.2021.015835

    Abstract This paper reviews the principle and application of the thermally activated desiccant cooling systems with their capability to perform efficiently in hot-humid climates. The paper first introduces the continuous increase of thermal comfort required in building and their relation with the consumption of conventional energy sources. The importance of desiccant cooling technology and its applications has been introduced as well. The energy and environmental issues with the conventional energy supply and the demand with the environmental problems and conditions mainly related to indoor air quality have been also discussed in the second chapter of this paper. The third part of… More >

  • Open Access

    ARTICLE

    High-Density Block Transformation to Increase Natural Ventilation Based on CFD Simulation

    Siqi Liu1,2,3, Guanqi Huang3,4,*

    FDMP-Fluid Dynamics & Materials Processing, Vol.17, No.1, pp. 141-157, 2021, DOI:10.32604/fdmp.2021.011990

    Abstract Many countries in the world have experienced extremely rapid urbanization during recent decades. The rapid development of densely populated areas has produced many urban environmental problems. This research explores the relationship between urban morphology and ventilation conditions. Through 3D modeling and Computational Fluid Dynamics (CFD) simulation, we focus on the large scale ventilation of an extended area with several buildings. As a testbed, in particular, the core part of Kwun Tong industrial park in Hong Kong is examined, and in order to validate the approach, 10 measurement points are used to get experimental values to be used for comparison (such… More >

  • Open Access

    ARTICLE

    Changes in neuropeptides related to food intake in the rat arcuate nucleus after chronic immobilization stress and the effect of comfortable music exposure

    HAO WANG1,2,#, FANG FANG1,#, CHAOYI FANG1, RUNSHENG ZHAO1,*, SHAOXIAN WANG1,*

    BIOCELL, Vol.44, No.3, pp. 421-429, 2020, DOI:10.32604/biocell.2020.010257

    Abstract Stress is an inevitable interference factor that seriously affects health. Listening to music is an economical, noninvasive, and highly accepted tool for easing stress. However, physiological studies investigating the ability of music to reduce stress in daily life are limited. We established rat models of chronic immobilization stress (CIS) to observe changes in the hypothalamic arcuate nucleus (ARC) neurons involved in the regulation of food intake and the effect of comfortable classical music exposure. Twenty-one days of stress resulted in decreased food intake and delayed body weight gain; up-regulation of leptin receptor (Ob-R), cocaine- and amphetamine-regulated transcript (CART), proopiomelanocortin (POMC),… More >

  • Open Access

    ABSTRACT

    Quantitative Method for Biomechanical Evaluation of Bedding Comfortableness

    Akisue Kuramoto1,*, Hitoshi Kimura2, Norio Inou2

    Molecular & Cellular Biomechanics, Vol.16, Suppl.2, pp. 126-126, 2019, DOI:10.32604/mcb.2019.08127

    Abstract Comfortable bedding is usually designed subjectively because of the difficulty in performing a quantitative evaluation. This paper proposes a quantitative evaluation method of comfortableness of beddings. The bedding shape determining how comfortable an individual may feel in using it depends on the body shape and normal posture of individuals. The internal physical load is expected to relate to the comfortableness of bedding. However, only a few quantitative discussions exist on the relation between the comfortableness of bedding and physical load. This study proposes a new evaluation method of physical load in a relaxed posture. The strain energy of muscles and… More >

  • Open Access

    ARTICLE

    Quantitative Method for Biomechanical Evaluation of Bedding Comfortableness

    Akisue Kuramoto1,*, Hitoshi Kimura2, Norio Inou2

    Molecular & Cellular Biomechanics, Vol.16, No.4, pp. 235-243, 2019, DOI:10.32604/mcb.2019.08123

    Abstract Comfortable bedding is usually designed subjectively because of the difficulty in performing a quantitative evaluation. This paper proposes a quantitative evaluation method of comfortableness of beddings. The bedding shape determining how comfortable an individual may feel in using it depends on the body shape and normal posture of individuals. The internal physical load is expected to relate to the comfortableness of bedding. However, only a few quantitative discussions exist on the relation between the comfortableness of bedding and physical load. This study proposes a new evaluation method of physical load in a relaxed posture. The strain energy of muscles and… More >

  • Open Access

    ARTICLE

    Feasibility of Using Wood Chips to Regulate Relative Humidity Inside a Building: A Numerical Study

    Dimitri Bigot1,*, Cyril Ott1, Stéphane Guichard1, Bruno Malet-Damour1

    Journal of Renewable Materials, Vol.7, No.6, pp. 505-516, 2019, DOI:10.32604/jrm.2019.04019

    Abstract The use of bio-based materials in buildings has become more and more significant last years. In most of the cases, their health properties and natural provenance have made them a great solution to face global climate warming and the new policies to reduce building energy consumption. In many thermal problems, bio-based materials can allow to optimize the building thermal behavior according to its energy consumption and inside comfort conditions. So it is when they are used as an insulation material in the building. However, it is not the case in this paper. In fact, the bio-based matter is rather used… More >

  • Open Access

    ARTICLE

    Potentials of an Eco-Friendly Composite in Hot-Dry Climate

    Fati Zoma1*, David Y.K. Toguyeni1, Ousmane Coulibaly1, Ivon Hassel2, Abdoulaye Ouedraogo3

    Journal of Renewable Materials, Vol.6, No.1, pp. 47-54, 2018, DOI:10.7569/JRM.2017.634147

    Abstract This study aims to show the aptitude of a locally made composite for providing thermal comfort and mechanical resistance in buildings in hot-dry climates. The thermal characterization reveals that the thermal diffusivity of the studied material is lower than that of commonly used materials such as agglomerated and full cinderblocks and laterite blocks and therefore is a better insulating material. In addition, its thermal inertia is the highest compared to commonly used materials of agglomerated and full cinderblocks, laterite blocks and compressed earth blocks, which implies a longer time lag. On the basis of mechanical resistance, with a compression resistance… More >

  • Open Access

    ARTICLE

    Analysis of Bus Ride Comfort Using Smartphone Sensor Data

    Hoong-Chor Chin1, Xingting Pang1, Zhaoxia Wang2,3,*

    CMC-Computers, Materials & Continua, Vol.60, No.2, pp. 455-463, 2019, DOI:10.32604/cmc.2019.05664

    Abstract Passenger comfort is an important indicator that is often used to measure the quality of public transport services. It may also be a crucial factor in the passenger’s choice of transport mode. The typical method of assessing passenger comfort is through a passenger interview survey which can be tedious. This study aims to investigate the relationship between bus ride comfort based on ride smoothness and the vehicle’s motion detected by the smartphone sensors. An experiment was carried out on a bus fixed route within the University campus where comfort levels were rated on a 3-point scale and recorded at 5-second… More >

  • Open Access

    ARTICLE

    Interval Uncertain Optimization of Vehicle Suspension for Ride Comfort

    C. Jiang1,2, S. Yu1, H.C. Xie1, B.C. Li1

    CMES-Computer Modeling in Engineering & Sciences, Vol.98, No.4, pp. 443-467, 2014, DOI:10.3970/cmes.2014.098.443

    Abstract Based on the interval analysis method, this paper proposes an uncertain optimization model for the ride comfort in vehicles and achieves the optimal design of vehicle ride comfort under the condition of complicated uncertainty. The spring stiffness and shock absorber damping of suspension is regarded as the design parameters, while the root mean square (RMS) of the vehicle body acceleration is treated as the design objective and the corresponding constraints are composed of suspension stiffness, natural frequency and RMS of suspension dynamic deflection. Moreover, the uncertainties of key parameters, such as sprung mass, tire stiffness, vehicle speed and road roughness,… More >

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