Studi Kasus Penurunan Kehilangan Air Pada Sistem Distribusi Air PDAM di DMA Pondok Mutiara Payung Sekaki Dengan Metode Steptest

2020 ◽  
Vol 7 (1) ◽  
pp. 130-134
Author(s):  
Muhammad Nawa Syarif ◽  
Abrar Ridwan
Keyword(s):  
Water Loss ◽  
Service Area ◽  
Water Leakage ◽  
Pipeline Network ◽  
Area 7 ◽  
Area 6 ◽  
Pipeline Networks ◽  
High Level ◽  
Reduce Water Loss

DMA (District Meter Area) Pondok Mutiara is the service area of ​​PDAM Kota Pekanbaru which is indicated to have a high level of water leakage due to the age of the pipes and the unstable land contours in the area, the problem now is that the PDAM does not know the actual leakage value, the purpose This study is to measure the value of leakage and look for leakage points with the steptest method, and make strategies to reduce water loss in DMA Pondok Mutiara by performing maintenance assets on a regular basis to minimize leakage in the DMA pipeline network, Making plans to re-arrange pipeline networks based on existing standardization (SNI 7511: 2011), conducts routine steptest activities so that they can monitor the level of real leakage and can be responsive in dealing with leaks. Based on research that has been done, the leakage value at Pondok Mutiara DMA is 2.66 liters / second and found 4 leak points, namely 1 leakage point in area 1, 2 leakage points in area 6, and 1 leakage point in area 7.

Assessment of water loss in Harare, Zimbabwe

2016 ◽  
Vol 6 (4) ◽  
pp. 519-533 ◽  
Author(s):  
Michael Gregory Ndunguru ◽  
Zvikomborero Hoko
Keyword(s):  
Water Loss ◽  
Total Water ◽  
Water Leakage ◽  
Water Losses ◽  
Proactive Approach ◽  
System A ◽  
High Level ◽  
Water Loss Management ◽  
Real Losses

A major challenge facing water utilities is the high level of water losses, which affects the financial viability and adequacy of water in the system. A study was carried out from January to May 2012 to characterize water losses in selected areas of Harare, Zimbabwe. Assessment of the contribution of water leakage to total water loss was carried out through water audits in four selected suburbs. Minimum night flows were determined over a number of days, and the SANFLOW model was used to determine average real losses. The water loss expressed as a percentage of supply in the four suburbs ranged from 29 to 43%, and was above the level expected for well-performing utilities in developing countries of 23%. Leakage contributed most to the water loss (>70%). For the entire city, the study established that non-revenue water ranged from 43 to 74% over the period 2009–2011. The study concludes that water loss management in Harare is poor, and this is affecting the quality of service delivery. There is a need for Harare to take a more proactive approach to water loss management, including periodic water audits.

scholarly journals Pewarisan Sifat Densitas Stomata dan Laju Kehilangan Air Daun (rate leaf water loss RWL) pada Kacang Tanah (Arachis hypogaea L.)

2012 ◽  
Vol 14 (1) ◽  
pp. 73
Author(s):  
Adisyahputra Adisyahputra ◽  
Sudarsono Sudarsono ◽  
Kukuh Setiawan
Keyword(s):  
Water Loss ◽  
Gene Action ◽  
Stomatal Density ◽  
Female Parent ◽  
Quantitative Character ◽  
Arachis Hypogaea L ◽  
Relative Water ◽  
Qualitative Characters ◽  
Leaf Water Loss ◽  
High Level

The aim of this research is to analyze and examine the inheritance of stomatal density trait and RWL as a variable in drought tolerance ofpeanut. The experiment was conducted by using cv. Kelinci that is sensitive genotype as female parent and US 605 which is tolerantgenotype as male parent, including population off spring from hybrid cv. Kelinci (P1) with US 605 (P2). Stomatal density was determinedby making leaf imprint and by observing leaf imprint under microscope. Relative water loss was determined by dipping peanut leaf in PEG40% for 48 hours. Result of the analysis showed that stomatal density and RWL were not only controlled by qualitative characters of majorgene, but also controlled by quantitative character of minor gene by polygenic with the complex gene action. Both characters seem toinfluence more as genetic factor and have high level fixation additive varians which can give the opportunity to obtain the tolerant offspring.

scholarly journals GPU-accelerated hydraulic simulations of large-scale natural gas pipeline networks based on a two-level parallel process

2020 ◽  
Vol 75 ◽  
pp. 86
Author(s):  
Yue Xiang ◽  
Peng Wang ◽  
Bo Yu ◽  
Dongliang Sun
Keyword(s):  
Natural Gas ◽  
Large Scale ◽  
Parallel Simulation ◽  
Simulation Software ◽  
Gas Pipeline ◽  
Processing Unit ◽  
Pipeline Network ◽  
Natural Gas Pipeline ◽  
Pipeline Networks ◽  
Speedup Ratio

The numerical simulation efficiency of large-scale natural gas pipeline network is usually unsatisfactory. In this paper, Graphics Processing Unit (GPU)-accelerated hydraulic simulations for large-scale natural gas pipeline networks are presented. First, based on the Decoupled Implicit Method for Efficient Network Simulation (DIMENS) method, presented in our previous study, a novel two-level parallel simulation process and the corresponding parallel numerical method for hydraulic simulations of natural gas pipeline networks are proposed. Then, the implementation of the two-level parallel simulation in GPU is introduced in detail. Finally, some numerical experiments are provided to test the performance of the proposed method. The results show that the proposed method has notable speedup. For five large-scale pipe networks, compared with the well-known commercial simulation software SPS, the speedup ratio of the proposed method is up to 57.57 with comparable calculation accuracy. It is more inspiring that the proposed method has strong adaptability to the large pipeline networks, the larger the pipeline network is, the larger speedup ratio of the proposed method is. The speedup ratio of the GPU method approximately linearly depends on the total discrete points of the network.

Study of non-revenue water status and enforcement measures to reduce water loss: case study in villages of Kermanshah Province of Iran

2017 ◽  
Vol 15 (4) ◽  
pp. 351-356 ◽  
Author(s):  
Seyyed Alireza Mousavi ◽  
Iraj Shahbazi ◽  
Hosna Janjani ◽  
Rastegar Veysinejad ◽  
Ali Asgar Sobhani ◽  
...  
Keyword(s):  
Water Loss ◽  
Water Status ◽  
Non Revenue Water ◽  
Reduce Water Loss

Utility Operations Reduce Water Loss, Improve Security, and Enhance Resilience

Opflow ◽  
2019 ◽  
Vol 45 (10) ◽  
pp. 14-17
Author(s):  
Nelson Mix ◽  
Alan Lai ◽  
Kenneth Thompson ◽  
Steven C. Seachrist
Keyword(s):  
Water Loss ◽  
Reduce Water Loss

Studies on lichen-dominated systems. I. The water relations of Cladonia alpestris in spruce–lichen woodland in northern Ontario

1971 ◽  
Vol 49 (8) ◽  
pp. 1389-1399 ◽  
Author(s):  
K. A. Kershaw ◽  
W. R. Rouse
Keyword(s):  
Water Relations ◽  
Water Availability ◽  
Water Loss ◽  
Physiological Response ◽  
Northern Ontario ◽  
Neutron Attenuation ◽  
Lichen Woodland ◽  
High Level ◽  
Very High

The water relations of Cladonia alpestris in spruce–lichen woodland in northern Ontario is described. The rate of drying of the lichen canopy was measured by resistance grids inserted into the canopy and monitored during the drying cycle. The effects of dew were measured in a similar fashion and shown to form an insignificant proportion of the total annual metabolism of the lichen. The lichen mat showed a very high stratified resistance to water loss and the effective mulching properties produce a high level of water availability under the lichen mat. This was confirmed using neutron attenuation techniques and the significance of this discussed in relation to the development of lichen woodland. The physiological response of the lichen to conditions of varying levels of saturation is also discussed.

Optimization of edible coating formulations on zucchini to reduce water loss

1994 ◽  
Vol 21 (2) ◽  
pp. 197-214 ◽  
Author(s):  
Roberto de Jesús Avena-Bustillos ◽  
John M. Krochta ◽  
Mikal E. Saltveit ◽  
Rodrigo de Jesús Rojas-Villegas ◽  
JoséAntonio Sauceda-Pérez
Keyword(s):  
Water Loss ◽  
Edible Coating ◽  
Reduce Water Loss ◽  
Coating Formulations

USE of CHITOSAN COATING to REDUCE WATER LOSS and MAINTAIN QUALITY of CUCUMBER and BELL PEPPER FRUITS

1991 ◽  
Vol 15 (5) ◽  
pp. 359-368 ◽  
Author(s):  
AHMED GHAOUTH ◽  
JOSEPH ARUL ◽  
RATHY PONNAMPALAM ◽  
MARCEL BOULET
Keyword(s):  
Water Loss ◽  
Bell Pepper ◽  
Chitosan Coating ◽  
Reduce Water Loss

scholarly journals A New Framework for Water Supply using IoT Technology

2020 ◽  
Vol 8 (6) ◽  
pp. 4917-4921
Keyword(s):  
Water Supply ◽  
Water Distribution ◽  
Water Source ◽  
Sensor Nodes ◽  
Water Leakage ◽  
Flow Sensors ◽  
The Common ◽  
High Level ◽  
And Control ◽  
New Framework

As the population keeps growing, water source must be distributed efficiently. The objective is to design an IoT based system which supports to monitor and control the water distribution to each home without any human intervention at the first level of initiation. In addition, the system will also help us to identify the leakage in the pipeduct so as to carry out immediate rescue against to the water leakage along the pipeduct. Later on, this idea will be upgraded by incorporating with necessary features for the common usage. The system consists of sensor nodes to note the quantity of water in every house by flow sensors at each instant and sends the data to the cloud using Wireless communication. The information collected could be known by users on the integrated website using their wi-fi connected gadgets slike mobilephones.The device also controls the automatic functioning of water supply by turning it off when the water rises above the high level than allocated to the appropriate huse which was initially fixed by government boards.

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