scholarly journals OPTIMALISASI DESAIN FASAD BANGUNAN RESTAURANT DI KEBONWARU, BATUNUNGGAL KOTA BANDUNG

2019 ◽  
Vol 2 (2) ◽  
pp. 138
Author(s):  
Hafiz Nurrahman
Keyword(s):  
Wind Speed ◽  
Solar Radiation ◽  
Thermal Comfort ◽  
Sun Exposure ◽  
Building Design ◽  
Tropical Climate ◽  
Dynamic Function ◽  
Double Skin ◽  
Solar Radiation Exposure ◽  
The City

Abstract: Bandung is a country with a tropical climate. The highest temperature reaches 32 ° C while the highest solar radiation exposure is more than 10 hours. On the other hand, the top speed of the wind only reaches 1 m / s. As a tourist city, building design in Bandung is demanded to be able to offer convenience for tourist visitors. Located at an altitude of 600-900dpl, the city of Bandung in addition to having an average air of 28 ° C, an average humidity of 68, thus significantly influencing the achievement of thermal comfort in the building to be designed. This paper aims to analyze the facade design of recreational-culinary function buildings that are able to respond to the tropical climate, especially those that offer thermal comfort to visitors. The double skin hollow facade system and there are hinges that are able to respond to interactions between buildings, wind, and sun exposure, so that wind speed and sun exposure can be optimally regulated through the dynamic function of the building's façade. Design experiments using the sunhour and flow design plugins to assess solar radiation and wind speed by manipulating facades, especially in the northern orientation can reduce sun exposure in 5-7 hours.Keywords: Building facade design, tropical building design, thermal comfort.Abstrak: Bandung merupakan negara dengan iklim tropis. Suhu tertinggi mencapai 32 °C sementara paparan radiasi matahari tertinggi lebih dari 10 jam. Di sisi lain, kecepatan tertinggi angin hanya mencapai 1 m/s. Sebagai kota wisata, desain bangunan di Bandung dituntut mampu menawarkan kenyamanan bagi para pengunjung wisata. Terletak pada ketinggian 600-900dpl, Kota Bandung selain memiliki udara rata-rata 28°C, kelembapan rata-rata 68, sehingga berpengaruh secara signifikan terhadap pencapaian kenyamanan termal pada bangunan yang akan didesain. Tulisan ini bertujuan untuk menganalisis desain fasade pada bangunan fungsi rekreatif-kuliner yang mampu merespon iklim tropis, terutama yang menawarkan kenyamanan termal pengunjungnya. Sistem double skin fasade berongga dan terdapat engsel yang mampu merespon interaksi antara bangunan, angin, dan paparan sinar matahari, sehingga kecepatan angin dan paparan sinar matahari dapat diatur secara optimal melalui fungsi dinamis façade bangunan. Percobaan desain menggunakan plugin sunhour dan flow desain untuk menilai radiasi matahari dan kecepatan angin dengan memanipulasi fasade, terutama di orientasi utara mampu mengurangi paparan matahari dalam 5-7 jam.Kata Kunci: Desain fasade bangunan, desain bangunan tropis, kenyamanan termal.

Effect of solar radiation on human thermal comfort in a tropical climate

2020 ◽  
pp. 1420326X1989176 ◽  
Author(s):  
Somsak Chaiyapinunt ◽  
Nopparat Khamporn
Keyword(s):  
Solar Radiation ◽  
Surface Temperature ◽  
Thermal Comfort ◽  
Human Body ◽  
Glass Surface ◽  
Tropical Climate ◽  
Direct Solar Radiation ◽  
Diffuse Solar Radiation ◽  
Human Thermal Comfort ◽  
Comfort Condition

The contribution of solar radiation on the global thermal comfort and local thermal comfort condition for a person sitting near a glass window in a building located in a tropical climate was studied. The effects of transmitted direct solar radiation, transmitted diffuse solar radiation, inside glass surface temperature and distance of a seated person from the glass window on the predicted percentage of dissatisfied (PPD) and plane radiant temperature asymmetry (RTA) were studied. PPD and RTA due to transmitted diffuse solar radiation and high inside glass surface temperature were decreased with the distance from the glass window. PPD was decreased exponentially with the distance from the glass window, while RTA was decreased slowly with the distance from the glass window. The findings show that PPD and RTA due to transmitted direct solar radiation striking the human body are not dependent on the distance from the glass window, but they are dependent on the magnitude and direction of the solar beam radiation incident on a human body. The results of the study would help the building designers to be able to design the interior working space for the tenant sitting near the glass window to achieve the acceptable level of thermal comfort condition.

scholarly journals Standard review and update for tropical comfort shift of the built environment

2018 ◽  
Vol 67 ◽  
pp. 04013 ◽  
Author(s):  
FX Teddy Badai Samodra ◽  
Irvansyah ◽  
Collinthia Erwindi
Keyword(s):  
Built Environment ◽  
Thermal Comfort ◽  
Field Study ◽  
Building Design ◽  
Field Studies ◽  
Tropical Climate ◽  
National Standard ◽  
World Health ◽  
Comparison Results ◽  
Health Organization

The urban building standards recommend adaptable shift on heat and noise criteria as the main issues related to the high-density environment. The previous studies relating to building thermal comfort provided the comparison results between the past and recent conditions. This study reviews the guidelines and regulations of international standard, overseas countries, and specific region of tropical climate research in Indonesia. The evaluation is focused on tropical climate in order to reach the accurate thermal comfort and noise criteria comparison for Indonesia. Furthermore, the field study of the 71 of the tropical built environment respondents was also conducted in order to update and compare to the existing standards. The review results show that compared to 17°C to 31°C thermal comfort range from the World Health Organization, the tropical thermal comfort should be determined with a range of 29.3°C to 31°C. Based on the field studies, for lowland is formulated by 1.4x+29.3 and in highland is 1.5x+29.3 as two representative regions of the tropical environment. For noise criteria, some countries set the policy for determining noise limits which has the same value between day and night condition as the result of the constant number of noise source with the similar level of annoyance. Based on the field study, this study updates the noise criteria which the denser environment, lowland, has limits of noise in 49.9 dBA when in highland is 47.8 dBA. Both of them are lower than 55 dBA of Indonesian Standard. Noise perception by occupants in nighttime shows that both in the lowland and in the highland, the vote is lower than daytime. The noise limits are 45.9 dBA and 40.0 dBA for lowland and highland, respectively. In general, the updated standard completes the existing and the detail of Indonesia national standard and the will be useful to guide the tropical building design.

scholarly journals Epidemic activity of respiratory syncytial virus is related to temperature and rainfall in equatorial tropical countries

2016 ◽  
Vol 144 (10) ◽  
pp. 2057-2063 ◽  
Author(s):  
N. GAMBA-SANCHEZ ◽  
C. E. RODRIGUEZ-MARTINEZ ◽  
M. P. SOSSA-BRICEÑO
Keyword(s):  
Respiratory Syncytial Virus ◽  
Wind Speed ◽  
Solar Radiation ◽  
Meteorological Parameters ◽  
Public Health Problem ◽  
Absolute Humidity ◽  
Major Public Health Problem ◽  
Hospitalized Children ◽  
Syncytial Virus ◽  
The City

SUMMARYAlthough viral acute lower respiratory infections (ALRIs) are a major public health problem in tropical low- and middle-income countries (LMICs), and there is growing evidence showing their relationship with meteorological parameters, studies performed in these countries are scarce. In an analytical cross-sectional study, we determined which of the main meteorological parameters (temperature, absolute humidity, rainfall, wind speed, and solar radiation) predicted respiratory syncytial virus (RSV) activity in a population of hospitalized children with ALRI during a 5-year period, from January 2009 to December 2013. Out of a total of 4559 children included in the study (mean age 9·2 ± 8·5 months), 2953 (64·8%) presented RSV infection during the 3-month period from March to May. In the multivariate analysis, after controlling for absolute humidity, wind speed, and solar radiation, temperature [incidence rate ratio (IRR) 2·25, 95% confidence interval (CI) 1·11–4·53, P = 0·024], and rainfall (IRR 1·01, 95% CI 1·00–1·02, P = 0·044) were independently associated with the monthly number of RSV infections. In conclusion, in Bogota, the capital of a tropical LMIC lying slightly above the equator, RSV activity peaks in the 3-month period from March to May, the main rainy period of the year in the city. In addition, rainfall and temperature are the two most important meteorological parameters that are independently associated with RSV activity in hospitalized children with ALRI in the city.

scholarly journals Student Perception of Thermal Comfort of Outdoor Space in Nusa Nipa University, Maumere, East Nusa Tenggara

2020 ◽  
Vol 4 (2) ◽  
pp. 16
Author(s):  
CORNELIA - HILDEGARDIS ◽  
Anak Agung Ayu Oka Saraswati ◽  
I Dewa Gede Agung Diasana ◽  
Ni Ketut Agusinta Dewi
Keyword(s):  
High Temperature ◽  
Wind Speed ◽  
Thermal Comfort ◽  
Student Perception ◽  
Air Humidity ◽  
Climate Classification ◽  
Outdoor Space ◽  
Köppen Climate Classification ◽  
The City

Nusa Nipa University is one of a number of universities in Maumere City, Sikka Regency, East Nusa Tenggara. Based on the Koppen climate classification, the City of Maumere is included in the savanna. The savanna climate is different from the tropical rain climate in terms of temperature, air humidity and wind speed. The high temperature in this city influences the perception of thermal comfort. Thermal comfort is a necessity for people performing activities in both outside and inside of building, one of those are students at Nusa Nipa University. This research was conducted by distributing questionnaire to 50 students occupying in 2 (two) different spots in the outdoor space. The result showed that 58% students felt comfortable in the grassy area with shade compared to other off-campus areas. This perception of comfort is influenced by comfort factors namely hardscape or softscape that exist in the outdoor space of the Nusa Nipa University.

scholarly journals Numerical Simulation Modelling of Building-Integrated Photovoltaic Double-Skin Facades

2021 ◽  
Author(s):  
Siliang Yang ◽  
Francesco Fiorito ◽  
Deo Prasad ◽  
Alistair Sproul
Keyword(s):  
Numerical Simulation ◽  
Energy Consumption ◽  
Thermal Comfort ◽  
Layer Structure ◽  
Building Design ◽  
Simulation Modelling ◽  
Building Envelope ◽  
Design Tool ◽  
Building Integrated Photovoltaic ◽  
Double Skin

Building-integrated photovoltaic (BIPV) replaces building envelope materials and provides electric power generator, which has aroused great interest for those in the fields of energy conservation and building design. Double-skin façade (DSF) has attracted significant attention over the last three decades due to its bi-layer structure, which improves thermal and acoustic insulation and therefore increases the energy efficiency and thermal comfort of buildings. It is hypothesised that the integration of BIPV and DSF (BIPV-DSF) would help buildings in reducing energy consumption and improving indoor thermal comfort concurrently. However, the prototype of the BIPV-DSF has not been well explored. Thus, the investigations of the BIPV-DSF are worthwhile. Numerical simulation is a cost and time effective measure for the design and analysis of buildings. This chapter spells out a comprehensive method of numerical simulation modelling of the novel BIPV-DSF system in buildings, which is carried out by using a graphically based design tool – TRNSYS and its plugins. TRNSYS has been validated and widely used in both the BIPV and building related research activities, which are capable in analysing the effects of BIPV-DSF on building performance such as energy consumption and indoor thermal condition.

scholarly journals Impact of elevated outdoor MRT station towards passenger thermal comfort: A case study in Jakarta MRT

2020 ◽  
Vol 29 (1) ◽  
pp. 93-107
Author(s):  
Sugiono Sugiono ◽  
Andyka Kusuma ◽  
Rio Lukodono ◽  
Siti Nurlaela ◽  
Achmad Wicaksono
Keyword(s):  
Air Quality ◽  
Wind Speed ◽  
Relative Humidity ◽  
Thermal Comfort ◽  
Fluid Dynamic ◽  
Heat Exposure ◽  
Tropical Climate ◽  
Predicted Mean Vote ◽  
Human Thermal Comfort ◽  
Modern Mass

Comfort of the train passengers is the main priority of modern mass rapid transit (MRT) management. Objective of this paper is to investigate the thermal comfort of the elevated MRT station in tropical climate. The first step of this study was to conduct literature review on human thermal comfort, environment ergonomics, computational fluid dynamic (CFD), computational aeroacoustics (CAA), and predicted mean vote (PMV). Air quality in elevated MRT station was measured based on several parameters: relative humidity, wind speed, temperature, and wind direction. A 3D model of MRT designed was used to describe existing condition prior to simulations with CFD and CAA softwares. Predicted mean vote is arranged based on the value of metabolism, wind speed, ambient temperature, mean radiant temperature, amount of insulation from clothing, and relative humidity. Whereas predicted percentage of dissatisfi ed (PPD) can be derived from PMV calculations. The analysis shows that the average PMV of existing condition for elevated outdoor MRT station is 3.6 (extremely hot) with PPD is 100% (all passengers felt discomfort). Some recommendations to reduce heat stress were addressed such as: adding plant, changing materials of the MRT station, and change the design of the elevated MRT station. Modifying open elevated MRT station into indoor elevated MRT station with installing six units of AC (2pk, ±23°C) can improve air quality and maintain the thermal comfort scale of PMV to be –0.04 (comfort) with PPD of < 8%. Based on the analysis, it can be concluded that the most suitable design for elevated MRT station in tropical climate (hot and humid) is indoor MRT station with pay attention to both direct and indirect heat exposure that hit the station.

Effect of wind and solar radiation on metabolic heat production in a small desert rodent, Spermophilus tereticaudus

2000 ◽  
Vol 203 (5) ◽  
pp. 879-888 ◽  
Author(s):  
K.M. Wooden ◽  
G.E. Walsberg
Keyword(s):  
Wind Speed ◽  
Body Temperature ◽  
Solar Radiation ◽  
Heat Production ◽  
Tissue Level ◽  
Short Wave ◽  
Metabolic Heat Production ◽  
Metabolic Heat ◽  
Simulated Solar Radiation ◽  
Solar Radiation Exposure

To understand better how complex interactions between environmental variables affect the energy balance of small diurnal animals, we studied the effects of the absence and presence of 950 W m(−)(2) simulated solar radiation combined with wind speeds ranging from 0. 25 to 1.00 m s(−)(1) on the metabolic rate and body temperature of the round-tailed ground squirrel Spermophilus tereticaudus. As wind speed increased from 0.25 to 1.00 m s(−)(1), metabolic heat production increased by 0.94 W in the absence of solar radiation and by 0.98 W in the presence of 950 W m(−)(2) simulated solar radiation. Exposure to simulated solar radiation reduced metabolic heat production by 0.68 W at a wind speed of 0.25 m s(−)(1), by 0.64 W at 0.50 m s(−)(1) and by 0.64 W at 1.00 m s(−)(1). Body temperature was significantly affected by environmental conditions, ranging from 32. 5 degrees C at a wind speed of 1.0 m s(−)(1) and no irradiance to 35. 6 degrees C at a wind speed of 0.50 m s(−)(1) with 950 W m(−)(2)short-wave irradiance. In addition, several unusual findings resulted from this study. The coat of S. tereticaudus is very sparse, and the observed heat transfer of 5.68+/−0.37 W m(−)(2) degrees C(−)(1) (mean +/− s.e.m., N=11) is much higher than expected from either allometric equations or comparative studies with other rodents of similar mass. Solar heat gain was remarkably low, equalling only 10 % of intercepted radiation and suggesting a remarkably high regional thermal resistance at the tissue level. Animals remained normally active and alert at body temperatures as low as 32.5 degrees C. These findings suggest a unique combination of adaptations that allow S. tereticaudus to exploit a harsh desert environment.

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