Sensitivity of Hygrothermal Analysis to Uncertainty in Rain Data

2010 ◽  
pp. 213-213-21
Author(s):  
Steve Cornick ◽  
W. Alan Dalgliesh ◽  
Wahid Maref
Keyword(s):  
Hygrothermal Analysis ◽  
Rain Data

scholarly journals Sensitivity of Hygrothermal Analysis to Uncertainty in Rain Data

2009 ◽  
Vol 6 (4) ◽  
pp. 102032 ◽  
Author(s):  
Steve Cornick ◽  
W. Alan Dalgliesh ◽  
Wahid Maref ◽  
Phalguni Mukhopadhyaya ◽  
Mavinkal K. Kumaran ◽  
...  
Keyword(s):  
Hygrothermal Analysis ◽  
Rain Data

Hygrothermal analysis of historic buildings

2016 ◽  
Vol 34 (1) ◽  
pp. 12-23 ◽  
Author(s):  
Hugo Entradas Silva ◽  
Fernando M.A. Henriques
Keyword(s):  
Historic Buildings ◽  
Biological Degradation ◽  
Conservation Area ◽  
Content Type ◽  
Preventive Conservation ◽  
Climate Targets ◽  
One Year ◽  
Hygrothermal Analysis ◽  
Practical Implications ◽  
Temperate Climates

Purpose – The purpose of this paper is to verify the applicability and efficiency of two statistical methods to obtain sustainable targets of temperature and relative humidity in historic buildings located in temperate climates. Design/methodology/approach – The data recorded along one year in a non-heated historic building in Lisbon (Portugal) was analysed with the two methodologies, EN 15757 and FCT-UNL. To evaluate their adequacy it was calculated the performance index for each target and it was verified the mechanical and biological degradation risks. Findings – While the use of the two approaches is suitable for temperate climates, there is a higher efficiency of the FCT-UNL methodology, allowing a better response for the three parameters in evaluation. Research limitations/implications – Despite the better results obtained, the FCT-UNL methodology was only tested for one city; therefore the application to other situations may be required to obtain more robust conclusions. Practical implications – The effectiveness of the FCT-UNL methodology to obtain sustainable climate targets can lead to important energy conservation in historic buildings and to contribute for the change of old approaches in the preventive conservation area. Originality/value – This paper provides a comparison between two recent methods. The results can lead to some advances in the science of preventive conservation, interesting to conservators and building physic scientists.

scholarly journals Scale invariant events and dry spells for medium-resolution local rain data

2014 ◽  
Vol 21 (2) ◽  
pp. 555-567 ◽  
Author(s):  
A. Deluca ◽  
Á. Corral
Keyword(s):  
Finite Size ◽  
Mediterranean Coast ◽  
Rain Event ◽  
Scale Invariant ◽  
Scaling Properties ◽  
Medium Resolution ◽  
Dry Spells ◽  
Dry Spell ◽  
Rain Events ◽  
Rain Data

Abstract. We analyze distributions of rain-event sizes, rain-event durations, and dry-spell durations for data obtained from a network of 20 rain gauges scattered in a region of the northwestern Mediterranean coast. While power-law distributions model the dry-spell durations with a common exponent 1.50 ± 0.05, density analysis is inconclusive for event sizes and event durations, due to finite size effects. However, we present alternative evidence of the existence of scale invariance in these distributions by means of different data collapses of the distributions. These results demonstrate that scaling properties of rain events and dry spells can also be observed for medium-resolution rain data.

Integrated hygrothermal analysis of ecological buildings

2020 ◽  
pp. 859-868
Author(s):  
C. Rode ◽  
M. Salonvaara ◽  
T. Ojanen ◽  
C. Simonson ◽  
K. Grau
Keyword(s):  
Hygrothermal Analysis

scholarly journals ANALISIS PENGARUH EL NINO TERHADAP HUJAN DI NTT

2018 ◽  
Vol 3 (2) ◽  
pp. 155-162
Author(s):  
Maria Marselina Kain ◽  
Abdul Wahid ◽  
Apolonaris S. Geru
Keyword(s):  
Water Vapor ◽  
El Niño ◽  
Rainy Season ◽  
El Nino ◽  
Comparative Method ◽  
Comparison And Analysis ◽  
Rain Data

Abstrak Telah dilakukan penelitian tentang pengaruh El Nino Terhadap Hujan di NTT yang terdiri dari 23 Zona Musim dan dianalisis berdasarkan data Curah Hujan tujuh tahun terakhir kejadian El Nino terhadap data Normal selama 30 tahun. Tujuan dari penelitian ini adalah untuk mengetahui pengaruh El Nino terhadap Awal Musim Hujan, Periode Musim Hujan, Panjang Musim Hujan, Curah Hujan Musim Hujan dan Sifat Hujan. Metode yang digunakan dalam penelitian ini adalah metode komparatif atau perbandingan dan Analisis Curah Hujan tahun El Nino  pada tujuh kali kejadian terhadap Normal Hujan selama 30 tahun. Hasil yang diperoleh dari penelitian ini adalah pada tahun terjadi El Nino, sebagian besar ZOM di NTT  dengan Awal Musim Hujan lebih mundur dari Normal, Periode Musim Hujan lebih pendek dari Normal serta Curah Hujan berkurang dari Normal dan Sifat Hujan menjadi di Bawah Normal. Pengaruh kejadian El Nino terhadap Awal Musim Hujan yang lebih mundur dari Normalnya, Periode Musim Hujan yang lebih pendek dari Normalnya dan Sifat Hujan yang di Bawah Normal dari 23 Zona di NTT pada tahun-tahun kejadian El Nino bervariasi dan ZOM yang dipengaruhi kejadian El Nino tidak tetap. Kata kunci : El Nino, Awal Musim Hujan, Periode Musim Hujan, Sifat Hujan. Abstract [Analysis Of The Influence Of El Nino On Rain In NTT] Studies have been conducted about the influence of El Nino on Rain the province which consists of 23 Zones the Season and analyzed based on Rain data for the last seven years the incidence of El Nino against Normal data for 30 years. The purpose  of this studyis to determine the effect of El Nino to the Beginning of the Rainy Season, Long Rainy Season, Precipitation of the Rainy Season and the Nature of the Rain. The method used in this research is the comparative method or comparison and Analysis of precipitation is the year of El Nino on the seven times genesis against the Normal Rain for 30 years. The results obtained from this research is that in the event of El Nino, most of the ZOM in NTT with the Beginning of the Rainy Season is more bacward than Normal, the Period of the Rainy Season is horter than Normal and precipitation is reduced from the Normal and the Nature of Rain to be Below Normal.this is because in the event of El Nino, monsoons coming from the Southest bring the water vapor that a lot of most of the turn toward the coast of Peru. The influence of El Nino to the Beginning of the Rainy Season which is backwards from Normal, the Period of the Rainy Season is shorter than Normal and the Nature of the Rainfall Below Normal from the 23 Zones in the province in the years of El Nino are varied and ZOM that influence the incidence of El Nino is not fixed. Keywords: El Nino, the Beginning of the Rainy Season, the Period of the Rainy Season, the Nature of the Rain

scholarly journals Geographic Information Systems Application to Drought Distribution Identification with Standardized Precipitation Index (SPI) Method in Trenggalek Regency

2021 ◽  
Vol 5 (2) ◽  
pp. 266-278
Author(s):  
Aditya Utama ◽  
Mohammad Pramono Hadi ◽  
Emilya Nurjani
Keyword(s):  
Standardized Precipitation Index ◽  
Precipitation Index ◽  
Analysis Method ◽  
A Value ◽  
Distance Weighted ◽  
Calculation Results ◽  
Negative Impacts ◽  
The Standardized Precipitation Index ◽  
Inverse Distance ◽  
Rain Data

The widespread drought area in Trenggalek Regency in 2019 needs to be analyzed to reduce negative impacts and as a monitoring tool to anticipate future drought events. The Standardized Precipitation Index (SPI) is a drought analysis method by calculating the rainwater deficit at various time scales used to identify the distribution of drought in Trenggalek Regency. This study using rain data on 13 rain stations for the period 1990-2019 and agricultural production data for 2019. The calculation results show that the highest SPI value occurred in March at the highly wet level with a value of 2.11. The lowest SPI value occurred in May at the extremely dry level with a value of -2.31. The results are then mapped using ArcGIS with the Inverse Distance Weighted (IDW) method to identify the spatial distribution of drought.

scholarly journals EFEK SUMUR RESAPAN TERHADAP PENGURANGAN VOLUME LIMPASAN PERMUKAAN

GANEC SWARA ◽  
2020 ◽  
Vol 14 (1) ◽  
pp. 537
Author(s):  
I WAYAN YASA ◽  
SASMITO SOEKARNO ◽  
I DEWA GEDE JAYA NEGERA
Keyword(s):  
Land Use ◽  
Ground Water ◽  
Water Level ◽  
Empirical Model ◽  
Soil Texture ◽  
Ground Water Level ◽  
Subsurface Water ◽  
Drying Up ◽  
Rain Data ◽  
Made In

Changes in land use not only affect the hydrological component, but also have an impact on the environmental sector, which include increasing the frequency of flooding and inundation, decreasing the availability of subsurface water, and drying up community wells. Various attempts have been made in efforts to reduce flooding and maintain sources of subsurface water, for example by applying infiltration well technology in each settlement. Infiltration wells will be able to function to re-enter rainwater falling on the pavement and can reduce flooding and inundation. This research is conducted with an empirical model that is connecting the amount of runoff that occurs after the availability of recharge wells. The purpose of this research is to get the ability of infiltration wells to reduce the occurrence of flooding in an area. The data used in the analysis are rain data and soil texture data. Based on the analysis results obtained dimensions of 0.8 m, 1 m and 1.2 m infiltration wells with a depth of 2 m. The depth of ground water level is 1.94 m, the permeability value (k) of land is 0.24 x 10ˉ⁴ m / sec. From each of the infiltration well diameters, it can reduce the successive runoff namely; infiltration wells are 0.8 m in diameter from runoff of 0.479 m³ / sec and after an infiltration well is reduced to 0.057m³ / sec, infiltration wells diameter 1.2 from runoff is 0.401 m³ / sec and after an infiltration well is reduced to 0.0475 m / second, and in the diater infiltration well 2 m from runoff of 0.377 m³ / sec and after the infiltration well is reduced to 0.0571 m / sec.

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