Availability and Performability of the Reserved Cold Water Supply System for a Raw Material Manufacturing for Plastics Industry

2020 ◽  
pp. 135-148
Author(s):  
Anatoly Lisnianski ◽  
Ilia Frenkel ◽  
Lev Khvatskin
Keyword(s):  
Water Supply ◽  
Cold Water ◽  
Supply System ◽  
Water Supply System ◽  
Raw Material ◽  
Plastics Industry

An energy-saving algorithm of control of electric drives of pumps in the cold water-supply system of buildings

2014 ◽  
Vol 85 (4) ◽  
pp. 192-197 ◽  
Author(s):  
Yu. A. Krylov ◽  
A. A. Radionov ◽  
A. S. Karandaev ◽  
V. R. Khramshin ◽  
Yu. I. Mamleeva
Keyword(s):  
Water Supply ◽  
Energy Saving ◽  
Cold Water ◽  
Supply System ◽  
Water Supply System ◽  
Electric Drives ◽  
Saving Algorithm

scholarly journals MODIFIKASI PANEL KONTROL SISTEM PENYEDIA AIR DINGIN PADA SISTEM VENTILASI ZONA RADIASI MENENGAH

2020 ◽  
Vol 2 (1) ◽  
pp. 6-12
Author(s):  
Paulus Sihombing ◽  
Nur Hanifah Yuninda ◽  
Massus Subekti
Keyword(s):  
Water Supply ◽  
Water Temperature ◽  
Electric Current ◽  
Real Time ◽  
Cold Water ◽  
Supply System ◽  
Water Supply System ◽  
Control Panel ◽  
Inlet Pipe ◽  
Sensor Current

This research aims to design and make modifications to the control panel of cold water supply system in the ventilation system into the radiation zone semi-automatic medium so as to increase the value of the effectiveness and efficiency of the operation pattern 3 cold water supply system. This study uses research and development and implemented in PRSG GAS BATAN, PUSPIPTEK SERPONG in november 2015 until June 2016. Modification of the control panel is used, CDAQ NI 9132, NI 9205, and 14.0 Labview software which will display chiller work in real time in graphs and nominal. Hardware input consists of, selector to choose the working water supply system cold, RTD PT100 as readers temperature of water entering the inlet pipe and the temperature of the water that comes out of the chiller, and sensor current transformer as a reader of electric current in the circulation pump, the output device is composed of pilot working as an indication lamp chiller and a thermostat to control the chiller via the inlet pipe. The steps to create the control panel modification of the draft, the control panel wiring, wiring input NI 9205, a program in Labview, then perform tests on the device. Based on the results of testing known that the thermostat is able to control the chiller in accordance with the limits of the temperature setting on the thermostat. In the test results of pembacan incoming water temperature at the inlet pipe through the display labview program has a percentage error of 0.52%, while data readings out of the water temperature chiller 1 has a percentage of the reading error of 0.57%, the second chiller is 0 , 41% and chiller 3 is 0.45% and the data of electric current readings on the circulation pump shown in labv iew program has a percentage of error of 1.24% in chiller 1, and 1.62% in the chiller 2, and 1.27% the chiller 3. Once the system has been tested as a whole, so that it can be concluded that the modification of the control panel of the cold water supply system can work properly according to the principles of work that has been made Abstrak Sistem penyedia air dingin yang berjumlah 3 unit pada PRSG GAS BATAN sebagai penghasil air dingin memiliki pola pengoperasian secara manual yang kurang efektif dan efesisen sehingga kurang optimal. Penelitian ini bertujuan untuk merancang dan membuat modifikasi panel kontrol sistem penyedia air dingin pada sistem ventilasi zona radiasi menengah menjadi semi otomatis sehingga dapat meningkatkan nilai efektifitas dan efesiensi dari pola pengoperasian 3 sistem penyedia air dingin. Penelitian ini menggunakan metode penelitian dan pengembangan dan dilaksanakan di PRSG GAS BATAN, PUSPIPTEK SERPONG pada bulan november 2015 sampai juni 2016. Modifikasi panel kontrol ini menggunakan, CDAQ NI 9132, NI 9205, dan software Labview 14.0 yang akan menampilkan kerja chiller secara real time dalam bentuk grafik dan nominal. Peralatan input terdiri dari, selektor untuk memilih kerja sistem penyedia air dingin, RTD PT100 sebagai pembaca suhu air yang masuk pada pipa inlet dan suhu air yang keluar dari chiller, dan sensor current trafo sebagai pembaca  listrik pada pompa sirkulasi, peralatan output terdiri dari pilot lamp sebagai indikasi kerja chiller dan thermostat untuk mengontrol chiller melalui pipa inlet. Langkah-langkah pembuatan modifikasi panel kontrol dari membuat rancangan, wiring panel kontrol, wiring input NI 9205, program pada Labview, kemudian melakukan uji coba pada alat. Berdasarkan hasil dari pengujian diketahui bahwa thermostat mampu mengontrol chiller sesuai dengan batas setting suhu pada thermostat. Pada hasil pengujian dari pembacan suhu air yang masuk pada pipa inlet melalui tampilan program labview memiliki presentase kesalahan sebesar 0,52%, sedangkan data hasil pembacaan suhu air keluar dari chiller 1 memiliki presentase kesalahan pembacaan sebesar 0,57%, pada chiller 2 ialah 0,41% dan chiller 3 ialah 0,45% dan data hasil pembacaan  listrik pada pompa sirkulasi yang ditampilkan dalam program labview memiliki presentase kesalahan 1,24% pada chiller 1, dan 1,62% pada chiller 2, dan 1,27% pada chiller 3. Setelah sistem diuji secara keseluruhan, sehingga dapat disimpulkan bahwa modifikasi panel kontrol sistem penyedia air dingin dapat bekerja dengan baik sesuai prinsip kerja yang telah dibuat

scholarly journals Impacts of storage tanks under the indirect cold water supply system on household water quality: a case of Wakiso District, Uganda

2021 ◽  
Author(s):  
Musa Manga ◽  
Lawrence O. Okeny ◽  
Timothy G. Ngobi ◽  
Acheng O. Pamela ◽  
Hidaya Namakula ◽  
...  
Keyword(s):  
Water Quality ◽  
Water Supply ◽  
Heterotrophic Bacteria ◽  
Cold Water ◽  
Supply System ◽  
Water Supply System ◽  
Water Supply Systems ◽  
Storage Tanks ◽  
Cleaning Methods ◽  
Main Component

Abstract Water supply systems form one of the most fundamental components of building services. In many communities especially in developing countries like Uganda, most households use the indirect cold water supply system, particularly because of the intermittent water supply problems. However, research has linked the main component of this system particularly water storage tanks to contamination of water. There is a paucity of research regarding which features of these tanks contribute to water contamination. This study investigated the effects of storage tank features and cleaning practices on water quality. The results revealed that the treated water received by households became significantly (α= 0.05) contaminated with faecal coliforms (p= 0.001), total coliforms (p < 0.001), and heterotrophic bacteria (p < 0.001) while in storage tanks. Furthermore, Fe, and Mn significantly increased in stored water (with p= 0.001, and p= 0.023, respectively) while residual free chlorine significantly reduced (p < 0.001). The study revealed that tank type, tank connectors, and tank age significantly affect water quality. The study concluded that tank cleaning does not guarantee improvement in quality of stored water. Further research is recommended to determine the best tank cleaning methods and optimal cleaning frequency.

DETERMINATION OF ARSENIC, CADMIUM, LEAD, COOPER AND ZINC IN DRINKING WATER FROM R. MACEDONIA

2018 ◽  
Vol 28 (4) ◽  
pp. 1259-1264
Author(s):  
Kiril Lisichkov ◽  
Katerina Atkovska ◽  
Neven Trajchevski ◽  
Orce Popovski ◽  
Nadica Todorovska
Keyword(s):  
Drinking Water ◽  
Water Supply ◽  
Atomic Absorption ◽  
Absorption Spectroscopy ◽  
Atomic Absorption Spectroscopy ◽  
Supply System ◽  
Water Supply System ◽  
Bottled Water ◽  
Cadmium Lead ◽  
The City

The presence of some chemical compounds at higher levels than maximum permissible concentrations (MPC) in the drinking water, suggests of water resources pollution. In this paper the following elements were analyzed: total arsenic, cadmium, lead, cooper and zinc. Twelve samples of water from the water supply system from the city of Skopje were examined during one year from three different springs. Also, ten samples of bottled water from three producers from the Macedonian market were tested.The determined average mass concentrations of total As, Cd(II), Pb(II), Cu(II) and Zn(II) in the analyzed water samples from the water supply system are 1.35 μg/l, 0.06 μg/l, 0.6 μg/l, 0.9 μg/l and 1,12 μg/l, respectively, and for the tested bottled water, the mean values ranges from 0.56 - 0.83 μg total As / l, 0.053 - 0.056 μg Cd(II)/l, 0.51 - 0.54 μg Pb(II)/l , 0.6 - 0.87 μg Cu(II)/l and 0.68 - 0.8 μg Zn(II)/l water.The following instrumental analytical methods and techniques were used for the analysis of the tested samples of drinking water: flame atomic absorption spectroscopy (AAS), atomic absorption spectroscopy with hydride cеll, electrothermal atomic absorption spectroscopy.The obtained results are shown in tables and graphic form. According to the obtained results a comparative analysis was carried out indicate that it is a water of good quality that can be used in different branches of the process industry.The obtained results in this paper do not exceed the values of the MPC of the Republic of Macedonia prescribed by the legal regulations for the drinking water, which confirm the health safety of the drinking water from the water supply system in the city of Skopje and the packed waters from the Macedonian market in relation to the tested elements.

The Management Component of the Kafr El Sheikh Water Supply Project, Egypt

1993 ◽  
Vol 27 (9) ◽  
pp. 29-36 ◽  
Author(s):  
J. E. Rose
Keyword(s):  
Health Education ◽  
Water Supply ◽  
Institutional Development ◽  
Supply System ◽  
Water Supply System ◽  
Development Work ◽  
Delta Region ◽  
Sustainable Water Supply ◽  
Finance Development ◽  
Institutional Resources

The Kafr El Sheikh Water Supply Project is a comprehensive endeavour to provide the physical and institutional resources for an effective and sustainable water supply system for 2 million persons in a developing rural Governorate in the Delta region of Egypt. The paper describes the aims of the Management Component, the institutional development of an integrated water supply and sewerage company and the main activities to-date. These include training, operational improvements, health education and finance development. Further support is required until all engineering and institutional development work has been completed.

System Analysis of Source Water Indicators at Drinking Water Production in the Central Water Supply System

2018 ◽  
Vol 16 (2) ◽  
pp. 84
Author(s):  
G A Blagodatsky ◽  
A A Bass ◽  
M M Gorokhov ◽  
D S Ponomarev
Keyword(s):  
Drinking Water ◽  
Water Supply ◽  
System Analysis ◽  
Supply System ◽  
Water Supply System ◽  
Source Water ◽  
Water Production ◽  
Drinking Water Production

Работа посвящена системному анализу данных показателей исходной воды при производстве питьевой воды в системе центрального водоснабжения крупного населенного пункта. На сегодняшний день на фоне увеличивающегося негативного антропогенного воздействия на окружающую среду наблюдается ухудшение состояния многих источников питьевого водоснабжения в широком спектре показателей, в частности, таких как органолептические свойства воды. Как следствие, возникает проблема и для питьевой воды. В работе приводится процесс подготовки данных о параметрах исходной воды, забираемой из водохранилища, которые ежемесячно (с 2002 по 2014 год) учитывались на предприятии при дезодорации воды. Приведенные параметры оказывают существенное влияние на органолептические свойства конечной воды. Подготовка данных для анализа проводится методом главных компонент К. Пирсона. Данные, полученные в пространстве R9, переводятся в пространство меньшей размерности R3. Понижение размерности позволяет снизить автокорреляцию между компонентами. Отбор компонент в пространство R3 проводится по правилу Парето. В пространстве R3 методом сферической кластеризации данных «Форель» с постоянным радиусом группировки проводится кластеризация. Приводится пошаговое визуальное представление алгоритма кластеризации в пространстве R3. В работе показано, что в данных показателях качества исходной воды имеются кластеры. Проводится корреляционно-регрессионный анализ данных, представленных в главных компонентах. Строятся регрессионные зависимости показателей органолептических свойств от главных компонент из пространства R3.

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