scholarly journals A COMPARATIVE STUDY OF THERMAL PERFORMANCES OF THREE MUD DWELLING UNITS WITH COURTYARDS IN COMPOSITE CLIMATE

2017 ◽  
Vol 41 (3) ◽  
pp. 184-198
Author(s):  
Janmejoy GUPTA ◽  
Manjari CHAKRABORTY ◽  
Arnab PAUL ◽  
Vamsi KORRAPATTI

Jharkhand is a state in the eastern part of India. The tropic of Cancer (23 and a half degree north line) passes through Ranchi district in Jharkhand. Mud huts with burnt clay tiled roofs in Ranchi district in Jharkhand are an integral component of the state’s vernacular architecture. They come in various shapes, with a number of them having a courtyard type of plan. In general, it has been stated that courtyard type dwelling units show better thermal performance during summer and winter. In this paper, three types of mud huts with courtyards are taken as a study and through temperature measurements in the south side rooms and “Ecotect-Autodesk” (Version 2011) software simulations, their thermal performance during the hotter and colder parts of the year are observed. Thereafter, based on the study, the thermally better performing dwelling types in summer and winter are identified among the three sub-types studied. It is found that all courtyard type dwellings do not necessarily show better thermal performance in summer and winter in composite climate. Certain recommendations with respect to increasing thermal comfort in general in courtyard type huts are made.

2019 ◽  
Vol 111 ◽  
pp. 03050
Author(s):  
Dragana Krstić ◽  
Miomir Vasov ◽  
Veliborka Bogdanović ◽  
Marko Ignjatović ◽  
Dušan Ranđelović

External fixed shadings are largely used to provide solar protection for building glazed surfaces. They are reducing heat gains and sensational visual discomfort caused by excessive daylighting. This paper presents a comparative study on external aluminium fixed shadings used on a student dormitory on different orientations and different slat angles. The purpose is to determine which slat angles are best to use in different orientations, from the point of view of energy consumption, thermal comfort, and daylighting. An analysis of annual energy consumption of the student dormitory was performed by using the software EnergyPlus, whereas the model of the building was created using SketchUp and OpenStudio software. Then, a parametric study was carried out by changing slat angles and building orientations, in order to find the best-balanced results with no occupant discomfort and possible energy savings. Results have shown that by considering the most balanced results between energy savings and thermal comfort, the best angles of the slats are from 105˚ to 120˚ on the south side, and from 45˚ to 75˚ on the east and west sides. By installing external shading devices, indoor thermal conditions are improving and may lead to significant energy savings, compared to a building without shading devices.


2016 ◽  
Vol 3 (4) ◽  
pp. 177 ◽  
Author(s):  
Erna Winansih ◽  
Antariksa Antariksa ◽  
Surjono Surjono ◽  
Amin Setyo Leksono

Malang as the second largest city in East Java province become crowded recently. The congestion almost happens everyday. The scenery of the street corridor is full of iron stacks. It is said that Malang city is less comfortable and less walkable. The decrease of this environment encourages to conduct the study (Q.S. 16:90, Q.S. 96:1-5, Q.S. 30:41). The study aimed to analyze the thermal comfort at pedestrian ways around Malang city squares, the street corridor of Merdeka Alun-Alun (MAA) and the Tugu Alun-Alun (TAA). The temperature and relative humidity were measured by multinorm instrument. The THI (Temperature Humidity Index) method was used to analyze the thermal comfort. The results showed that the THI average at TAA (27) were more comfortable than at MAA (27,5). The south side of the MAA corridor became the most comfortable with the THI value of 26,4, which the side covered by trees canopy (Q.S. 7:58). It needs to conduct next research (Q.S. 13:11), because of the change of the activities at these street corridors.


2020 ◽  
Vol 73 (4) ◽  
pp. 539-550
Author(s):  
Li Yong-Sŏng ◽  
Park Won Kil
Keyword(s):  

AbstractThis paper attempts to give new explanation for the expression agrïp yok bol- occurring in 9th line of the south side of the Bilgä Kagan Inscription. After a thorough survey of former research and several Chinese sources, the authors came to the conclusion that this expression must be a euphemistic expression for being beheaded in a battle. The authors found also that kog säŋün was Guo Yingjie 郭英傑. In sum, the sentence in question is to be read as ulug oglum agrïp yok bolča kog säŋünüg balbal tikä bertim ‘When my oldest son died of a disease, I readily erected General Kog as a balbal (for him).’ The expression agrïp yok bol- is to be regarded as a euphemistic expression for being beheaded in a battle.


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