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 PENGARUH BUKAAN SAMPING (CLERESTORY) TERHADAP KUALITAS KENYAMANAN TERMAL PADA FOOD CARNIVAL, MALL AEON BSD

Vitruvian ◽  
2019 ◽  
Vol 9 (1) ◽  
pp. 47
Author(s):  
Tathia Edra Swasti
Keyword(s):  
Wind Speed ◽  
Thermal Comfort ◽  
Air Temperature ◽  
Effective Temperature ◽  
Air Humidity ◽  
Air Velocity ◽  
Predicted Mean Vote ◽  
Air Speed ◽  
The Right

ABSTRAK Mall saat ini marak menggunakan clerestory sebagai salah satu upaya untuk penerangan alami pada siang hari. Namun, cahaya matahari pada sore hari (barat) akan menghasilkan cahaya matahari yang lebih panas dan silau dibandingkan cahaya matahari pada pagi hari (timur). Oleh karena itu, dengan pemakaian clerestory yang cukup besar pada bangunan, masalah panas tentu tak dapat dihindari. Begitu pula dengan glare yang berasal dari pantulan sinar matahari. Salah satu Mall yang menggunakan clerestory adalah Mall AEON BSD. Pengukuran suhu udara, temperatur efektif, kelembaban udara, kecepatan angin, PMV (Predicted Mean Vote) dan PPD (Predicted Percentage of Dissatisfied) dilaksanakan pada 4 waktu dengan 5 lokasi titik ukur yang memiliki kondisi berbeda untuk membuktikan bahwa clerestory dapat mempengaruhi kenyamanan termal. Disimpulkan bahwa titik 2 yaitu titik yang berdekatan dengan clerestory sisi kanan (ukurannya lebih kecil daripada clerestory sisi kiri) memiliki temperatur efektif dan kelembaban udara yang lebih rendah dari titik lain, dan kecepatan udara (dipengaruhi oleh hembusan AC) lebih tinggi dari titik lain. Responden merasa nyaman saat berada di titik tersebut.Titik paling nyaman menurut responden adalah titik 2 dengan TE rata-rata berkisar 27,4˚C, kelembaban udara rata-rata berkisar 52,2%, kecepatan udara rata-rata berkisar 0,15 m/s, PMV berkisar 0,5 dan PPD berkisar 12,7%. Dengan begitu semakin kecil ukuran skylight terbukti mempengaruhi kenyamanan termal dan membuat kenyamanan termal dapat tercapai. Kata Kunci: Mall, Clerestory, PMV, PPD, Kenyamanan Termal ABSTRACT Nowadays mall is decorated with clerestory as an effort to lighten naturally during the day. However, sunlight in the afternoon (west) will produce more sunlight and glare than sunlight in the morning (east). Therefore, with the use of a fairly large clerestory in buildings, the problem of heat certainly can not be avoided. Similarly, glare that comes from the reflection of sunlight. One of the malls that use clerestory is BSD AEON Mall. Measurement of air temperature, effective temperature, air humidity, wind speed, PMV (Predicted Mean Vote) and PPD (Predicted Percentage of Dissatisfied) carried out at 4 times within 5 measuring spots that have different conditions, proving that clerestory can affect thermal comfort. It was concluded that point 2, which is the point adjacent to the right side clerestory (smaller in size than the left side clerestory) has an effective temperature and lower air humidity than other points, and air velocity (affected by blowing AC) is higher than other points. Respondents felt comfortable when they were at that point. The most comfortable point according to respondents was point 2 with TE averaging around 27.4˚C, air humidity averaged 52.2%, the average air speed ranged from 0.15 m / s, PMV ranges from 0.5 and PPD ranges from 12.7%. Thus, the smaller size of the clerestory is affecting thermal comfort and thermal comfort can be achieved. Keywords: Mall, Clerestory, PMV, PPD, Thermal Comfort

Environmental Assessment of the Impact of Meteorological Parameters on Man-Made Pollution by Carcinogenicly Dangerous Chemicals in the Voronezh Air Basin

2021 ◽  
Vol 25 (2) ◽  
pp. 60-65
Author(s):  
S.A. Kurolap ◽  
V.S. Petrosyan ◽  
O.V. Klepikov ◽  
V.V. Kulnev ◽  
D.Yu. Martynov
Keyword(s):  
Wind Speed ◽  
Air Temperature ◽  
Meteorological Parameters ◽  
Carcinogenic Risk ◽  
Meteorological Conditions ◽  
Air Humidity ◽  
Maximum Permissible Level ◽  
Relative Air Humidity ◽  
The Impact ◽  
The City

Based on the analysis of official statistics from the Voronezh Hydrometeorological Service, the patterns of the dynamics of pollutants (formaldehyde and soot) are investigated depending on the combination of various meteorological parameters — air temperature, wind speed, relative air humidity. A positive relationship has been established between the increase in atmospheric pollution with formaldehyde and air temperature. With increasing wind speed and relative humidity, the concentration of formaldehyde and soot in the atmosphere of the city, as a rule, decrease. The maximum permissible level of carcinogenic risk to public health has been established, causing concern. The obtained patterns can be used to predict the level of technogenic pollution of the city’s atmosphere, depending on meteorological conditions.

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.

scholarly journals Microclimatic factors and soil characteristics of Arroceros Forest Park in the City of Manila, Philippines

2021 ◽  
Vol 22 (11) ◽  
Author(s):  
Julie Berame ◽  
ERWIN P. ELAZEGUI ◽  
MINERVA C. ARENAS ◽  
JASON A. OROZCO
Keyword(s):  
Organic Matter ◽  
Wind Speed ◽  
Light Intensity ◽  
Air Temperature ◽  
Soil Ph ◽  
Urban Forest ◽  
Soil Characteristics ◽  
Air Humidity ◽  
Forest Park ◽  
The City

Abstract. Berame JS, Elazegui EP, Arenas MC, Orozco JA. 2021. 2021. Microclimatic factors and soil characteristics of Arroceros Forest Park in the City of Manila, Philippines. Biodiversitas 22: 4956-4962. Microclimatic factors affect many ecosystem functions. However, the challenge of acquiring consistent data has impeded the quantitative assessment of the spatial heterogeneity of soil-climate in Arroceros Forest Park as an artificial urban forest park known as the last lung of the City of Manila. With this unassisted urban forest park, this study aims to determine the microclimatic factors such as light intensity, air temperature, air humidity, wind speed and direction, soil temperature, soil pH, percent organic matter, percent soil moisture and soil texture by using a sieve analysis and textural triangle method to know the status of the forest park. These procedures reveal the soil type available in the park to be clay and loam suitable for growing plants abundantly. Results showed that four microclimate factors viz. air temperature, air humidity, percent organic matter, and soil texture, were highly significant (p<0.000). Additionally, it further revealed that microclimatic factors such as light intensity, wind speed, and soil pH are essential in an ecosystem. It also found that soil size is a significant parameter for soil characterizations in this kind of study. Finally, the division of soil microsites into different positions based on prevailing light or shade conditions helped assess the significant variations of soil characteristics and conditions within the study area.

scholarly journals Temperature, Disease, and Death in London: Analyzing Weekly Data for the Century from 1866 to 1965

2021 ◽  
pp. 1-41
Author(s):  
W. Walker Hanlon ◽  
Casper Worm Hansen ◽  
Jake Kantor
Keyword(s):  
Nineteenth Century ◽  
High Temperature ◽  
Mortality Data ◽  
Late Nineteenth Century ◽  
Infant Deaths ◽  
Digestive Diseases ◽  
Late Nineteenth ◽  
The Impact ◽  
The City

Using novel weekly mortality data for London spanning 1866-1965, we analyze the changing relationship between temperature and mortality as the city developed. Our main results show that warm weeks led to elevated mortality in the late nineteenth century, mainly due to infant deaths from digestive diseases. However, this pattern largely disappeared after WWI as infant digestive diseases became less prevalent. The resulting change in the temperature-mortality relationship meant that thousands of heat-related deaths—equal to 0.9-1.4 percent of all deaths— were averted. These findings show that improving the disease environment can dramatically alter the impact of high temperature on mortality.

Dependence of Aerosol Particle Concentration in Surface Air over the Moscow Region on Wind Speed and Lapse Rate

2021 ◽  
pp. 103-110
Author(s):  
E. A. Stulov ◽  
◽  
E. V. Sosnikova ◽  
N. A. Monakhova ◽  
◽  
...  
Keyword(s):  
Surface Layer ◽  
Wind Speed ◽  
Particle Concentration ◽  
Meteorological Factors ◽  
Lapse Rate ◽  
Radiosonde Data ◽  
Vertical Temperature Gradient ◽  
Vertical Temperature ◽  
Simple Estimation ◽  
The City

Based on the daily measurements of atmospheric aerosol characteristics in the city of Dolgoprudny (20 km from the center of Moscow) carried out during 2013-2018, the influence of some meteorological factors on the concentration of various aerosol fractions in the surface layer of the atmosphere is analyzed. It is that the aerosol concentration depends most on the wind speed and the vertical temperature gradient. The method of simple estimation of aerosol particles accumulation conditions in the surface layer based on the use of standard radiosonde data is developed.

scholarly journals Performance of different methods for reference evapotranspiration estimation in Jaíba, Brazil

2018 ◽  
Vol 22 (2) ◽  
pp. 83-89 ◽  
Author(s):  
Gustavo H. da Silva ◽  
Santos H. B. Dias ◽  
Lucas B. Ferreira ◽  
Jannaylton É. O. Santos ◽  
Fernando F. da Cunha
Keyword(s):  
Wind Speed ◽  
Solar Radiation ◽  
Standard Method ◽  
Reference Evapotranspiration ◽  
Meteorological Data ◽  
Air Humidity ◽  
Method Performance ◽  
Relative Air Humidity ◽  
Evapotranspiration Estimation ◽  
Missing Variables

ABSTRACT FAO Penman-Monteith (FO-PM) is considered the standard method for the estimation of reference evapotranspiration (ET0) but requires various meteorological data, which are often not available. The objective of this work was to evaluate the performance of the FAO-PM method with limited meteorological data and other methods as alternatives to estimate ET0 in Jaíba-MG. The study used daily meteorological data from 2007 to 2016 of the National Institute of Meteorology’s station. Daily ET0 values were randomized, and 70% of these were used to determine the calibration parameters of the ET0 for the equations of each method under study. The remaining data were used to test the calibration against the standard method. Performance evaluation was based on Willmott’s index of agreement, confidence coefficient and root-mean-square error. When one meteorological variable was missing, either solar radiation, relative air humidity or wind speed, or in the simultaneous absence of wind speed and relative air humidity, the FAO-PM method showed the best performances and, therefore, was recommended for Jaíba. The FAO-PM method with two missing variables, one of them being solar radiation, showed intermediate performance. Methods that used only air temperature data are not recommended for the region.

scholarly journals TINGKAT KENYAMANAN LINGKUNGAN BELAJAR SEKOLAH MENENGAH ATAS (SMA) NEGERI DI KOTA DENPASAR

2016 ◽  
Vol 10 (1) ◽  
pp. 22
Author(s):  
Ni Luh Gede Ambarawati ◽  
Wayan Arthana ◽  
I Wayan Suarna
Keyword(s):  
High School ◽  
Learning Process ◽  
School Environment ◽  
Student Perception ◽  
Quality Standard ◽  
Comfort Level ◽  
Public High School ◽  
Class Room ◽  
Almost All ◽  
The City

A healthy andcomfortable school environmentis necessary,besidessupporting the learning process, it can also improve student achievement. Noiseisdisturbingin the learning process, as well as theavailability offacilities and infrastructure will greatly affectthe comfort ofthe studentsinthe school. The purpose ofthis research is to determinethe comfort level ofstate senior highschoolstudyinthe city of Denpasarin termsofnoise levels, the availability andmanagement ofschool facilities and infrastructure and student perception against school envirumental level. The research methodused isdescriptivequantitativemethod. The locationof the research wasconductedin 8 State Senior High Schoolinthe city of Denpasar. Measurements ofnoise levelsateach schoolis capturedfromninesample pointsbyusing asound level meterand surveyof schoolfacilities and infrastructurethat are environmentally friendly. The comfort level of public high school learning environment in the city of Denpasar based on the level of noise has exceeded the qualty standard 55 dB, with the highest noise in the school yard of 73,0 dB, which motor vechicles as the main caused. Temperature and humidity do not affect the level of comfort, because they already meet the standards. Lighting of class room in eight public high school in the city of Denpasar very well. Because it meets the quality standard. Availability and management infrastructure is optimal and adequate to support mostly high school in the city of Denpasar. Support in the facilities and infrastructure have been seen in SMAN 3 Denpasar. Almost all students in eight high school in the city of Denpasar stated that the school environment is comfortable, even SMAN 3 Denpasar stated very comfotable at around 62,85 per cent.

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