scholarly journals PEMBUATAN WESTAFEL MINI OTOMATIS DENGAN MEMANFAATKAN KEMBALI AIR KONDENSASI AC

2021 ◽  
Vol 16 (2) ◽  
pp. 79
Author(s):  
Rina Rina
Keyword(s):  
Water Source ◽  
Vacuum Pump ◽  
Air Conditioner ◽  
Water Pump ◽  
Ir Sensor ◽  
Hours Of Work ◽  
Flow Through ◽  
Washing Water

The current condition of Covid-19 requires washing hands with more intensity so that it requires more water. While the water from the condensation of the Air-Conditioner is wasted. So from that an automatic mini sink was made with the water source taken from the condensation of the Air-Conditioner. This sink is designed to make it easier to wash your hands without the need to touch the water tap and the soap. Automatic mini westafel is assembled with IR sensor, 1 channel 5 V relay, IC 7805, 12 V water pump, 12 V mini vacuum pump, 12 V 30 A 4 pin relay, and a 12 V adapter which functions as an automatic working system on water faucets and soap. Air-Conditioner condensation water with a power of 1 PK produces 8.8 L / day (8 hours of work) can be used to wash hands 35 times if once washing water is used 0.25 L. The construction of the automatic mini sink frame is designed using PVC material ¾ '' with the aim of making it easier for water to flow through the pipe frame. Keywords: Design, automatic mini sink, Air-Conditioner condensation

scholarly journals Analysis of Performance of the Wind-Driven Pulverizing Aerator Based on Average Wind Speeds in the Conditions of Góreckie Lake

Energies ◽  
2021 ◽  
Vol 14 (10) ◽  
pp. 2796
Author(s):  
Andrzej Osuch ◽  
Ewa Osuch ◽  
Stanisław Podsiadłowski ◽  
Piotr Rybacki
Keyword(s):  
Mathematical Model ◽  
Wind Speed ◽  
Water Pump ◽  
Average Wind Speed ◽  
Flow Rates ◽  
Wind Speeds ◽  
Average Wind ◽  
Flow Through ◽  
Analysis Of Performance ◽  
Research Period

In the introduction to this paper, the characteristics of Góreckie lake and the construction and operation of the wind-driven pulverizing aerator are presented. The purpose of this manuscript is to determine the efficiency of the pulverizing aerator unit in the windy conditions of Góreckie Lake. The efficiency of the pulverization aerator depends on the wind conditions at the lake. It was necessary to conduct thorough research to determine the efficiency of water flow through the pulverization segment (water pump). It was necessary to determine the rotational speed of the paddle wheel, which depended on the average wind speed. Throughout the research period, measurements of hourly average wind speed were carried out. It was possible to determine the efficiency of the machine by developing a dedicated mathematical model. The latest method was used in the research, consisting of determining the theoretical volumetric flow rates of water in the pulverizing aerator unit, based on average hourly wind speeds. Pulverization efficiency under the conditions of Góreckie Lake was determined based on 6600 average wind speeds for spring, summer and autumn, 2018. Based on the model, the theoretical efficiency of the machine was calculated, which, under the conditions of Góreckie Lake, amounted to 75,000 m3 per year.

Analysis and Design of Multistage Electrostatically-Actuated Micro Vacuum Pumps

2002 ◽  
Author(s):  
Aaron Astle ◽  
Anthony Paige ◽  
Luis P. Bernal ◽  
Jennifer Munfakh ◽  
Hanseup Kim ◽  
...  
Keyword(s):  
Thermodynamic Model ◽  
Volume Ratio ◽  
High Volume ◽  
Fixed Number ◽  
Vacuum Pump ◽  
Pump Performance ◽  
Analysis And Design ◽  
Electrostatically Actuated ◽  
Flow Through ◽  
Low Volume

A new concept for a MEMS-fabricated micro vacuum pump is proposed. The pump is designed to operate in air and can be easily integrated into MEMS-fabricated micro fluidic systems. The pump consists of a series of pumping cavities with electrostatically actuated membranes interconnected by electrostatically actuated microvalves. A thermodynamic model of the micropump has been developed and used to determine the pump performance. It is shown that volume ratio plays an important role in the operation of the pump. For a fixed number of stages, at high volume ratio, pumping action is uniformly distributed among the stages. In contrast, at low volume ratio most of the pumping takes place in the latter stages of the pump. Detailed calculations of the flow through key components of the micropump are also reported. In particular the flow through a checkerboard microvalve and electrode perforations is discussed, and new correlations for the pressure loss in these components are proposed.

The modified water source diagram method applied to reuse of textile industry continuous washing water

2010 ◽  
Vol 54 (12) ◽  
pp. 1405-1411 ◽  
Author(s):  
Antônio Augusto Ulson de Souza ◽  
Aline Resmini Melo ◽  
Fernando Luiz Pellegrini Pessoa ◽  
Selene Maria de Arruda Guelli Ulson de Souza
Keyword(s):  
Textile Industry ◽  
Water Source ◽  
Diagram Method ◽  
Washing Water

scholarly journals Two stage ejector as a pre-stage of the water ring vacuum pump

2019 ◽  
Vol 20 (7) ◽  
pp. 703
Author(s):  
Róbert Olšiak ◽  
Marek Mlkvik ◽  
František Ridzoň ◽  
Pavol Slovák
Keyword(s):  
Experimental Studies ◽  
Vacuum Pump ◽  
3D Printer ◽  
Cfd Analysis ◽  
Suction Pressure ◽  
Governing Equations ◽  
Flow Through ◽  
Definition Of ◽  
Water Ring ◽  
Liquid Ring

A supersonic gas ejector in conjunction with a liquid ring vacuum pump is used for creating and maintaining a vacuum in a chamber for technological purposes. In this paper, the authors submit an overview of the problematics of suction pressure reduction with a supersonic gas ejector used as a pre-stage of a liquid ring vacuum pump. This system has also the function of a cavitation protection due to the higher pressure present at the suction throat of the vacuum pump. A part of this paper is devoted to the governing equations used at the definition of the flow through an ejector. The CFD analysis of the problem was implemented with the package Fluent in 2 dimensions using the axisymmetric approach. The parts of the physical model were printed on a STRATASYS 3D printer, or were cast from technical resin. The experimental studies are then carried out in our own laboratory for validation purposes.

Experimental Research on Performance of Water-Cooled VRF System in Winter in Shanghai

2011 ◽  
Vol 243-249 ◽  
pp. 4891-4898
Author(s):  
Ying Qian Song ◽  
Rui Fan ◽  
Wei Ding Long
Keyword(s):  
Test Data ◽  
Flow System ◽  
Water Source ◽  
Coefficient Of Performance ◽  
Point System ◽  
Water Pump ◽  
Pump System ◽  
Heat Pump System ◽  
Almost All ◽  
Tongji University

Water-cooled Variable Refrigerant Flow system (WCVRF) is like a connection of water source heat pump system and air-cooled VRF system and it has almost all advantages of both systems. For its better application in China, it is necessary to give a research and analysis through experiment firstly. So in the paper, the water-cooled VRF system is introduced firstly, then the practical experimental lab including test data point, system design and diagram in Tongji university is shown and explained clearly. Finally, through the analysis on test data such as inlet and outlet water temperature of unit, the power used of unit and water pump etc., we can see the instantaneous coefficient of performance (COP), seasonal COP and integrated part load value (IPLV) of whole system. All the results are helpful for the better application of water-cooled VRF system.

scholarly journals Performance Evaluation of a Micro Off-Grid Solar Energy Generator for Islandic Agricultural Farm Operations Using HOMER

2018 ◽  
Vol 2018 ◽  
pp. 1-9 ◽  
Author(s):  
Edward M. Querikiol ◽  
Evelyn B. Taboada
Keyword(s):  
Water Source ◽  
Solar Pv ◽  
Water Pump ◽  
Pv System ◽  
Optimum Configuration ◽  
Pv Panel ◽  
Load Demand ◽  
Industrial Grade ◽  
Actual Load ◽  
Agricultural Farm

A study was conducted to evaluate the performance of a 1.5 kW micro off-grid solar power generator in a 2-hectare area of a 23-hectare agricultural farm located in Camotes Island, Cebu, Philippines (10°39.4′ N, 124°20.9′ E). The area requires at least 3000 liters of water every day to irrigate its plantation of passion fruit and dragon fruit; however, there is no water source within the immediate vicinity that can support such requirement. A 1/2 horsepower water pump was installed to provide the required irrigation. A 1.5 kW solar photovoltaic (PV) system consisting of 6 units of 250-watts solar PV panel with corresponding 6 units of 200 ampere-hour deep cycle batteries managed by a 3-kW industrial grade inverter provided the power for the water pump and supplied for the electricity demand of the farm. The actual energy usage of the farm was measured from the built-in monitoring of the charge controller and the installed system was analyzed to determine its efficiency in meeting the actual load demand. The HOMER optimization tool was used to determine the optimal configuration for the micro off-grid system based on the actual load demand. Simulation results showed that the optimum configuration that could supply the actual load is a 2.63 kW all-PV system with 8 kWh batteries. Sensitivity analysis was done to consider (1) possible increase in electrical load when the current plantation expands either in progression or outright to its full-scale size of 23 hectares and (2) variations in fuel cost. This study can be considered a good model in assessing renewable energy needs of farms in the country, which can be operationalized for agricultural purposes.

scholarly journals Technical note: Seamless gas measurements across Land-Ocean Aquatic Continuum – corrections and evaluation of sensor data for CO<sub>2</sub>, CH<sub>4</sub> and O<sub>2</sub> from field deployments in contrasting environments

2020 ◽  
Author(s):  
Anna Canning ◽  
Arne Körtzinger ◽  
Peer Fietzek ◽  
Gregor Rehder
Keyword(s):  
Water Source ◽  
Technical Note ◽  
Sensor Data ◽  
Small Scale ◽  
Flow Through ◽  
Gas Measurements ◽  
Set Up ◽  
Physical And Chemical ◽  
Global Carbon ◽  
Carbon System

Abstract. Comparatively the ocean and inland waters are two separate worlds, with concentrations in greenhouse gases having orders of magnitude in difference between the two. Together they create the Land-Ocean Aquatic Continuum (LOAC), which comprises itself largely of areas with little to no data in regards to understanding the global carbon system. Reasons for this include remote and inaccessible sample locations, often tedious methods that require collection of water samples and subsequent analysis in the lab, as well as the complex interplay of biological, physical and chemical processes. This has led to large inconsistencies, increasing errors and inevitably leading to potentially false upscaling. Here we demonstrate successful deployment in oceanic to remote inland regions, over extreme concentration ranges with multiple pre-existing oceanographic sensors combined set-up, allowing for highly detailed and accurate measurements. The set-up consists of sensors measuring pCO2, pCH4 (both flow-through, membrane-based NDIR or TDLAS sensors), O2, and a thermosalinograph at high-resolution from the same water source simultaneously. The flexibility of the system allowed deployment from freshwater to open ocean conditions on varying vessel sizes, where we managed to capture day-night cycles, repeat transects and also delineate small scale variability. Our work demonstrates the need for increased spatiotemporal monitoring, and shows a way to homogenize methods and data streams in the ocean and limnic realms.

scholarly journals Reduction of the suction pressure of a liquid ring vacuum pump with a supersonic gas ejector

2018 ◽  
Vol 168 ◽  
pp. 03002 ◽  
Author(s):  
Róbert Olšiak ◽  
Zoltán Fuszko ◽  
Zoltán Csuka
Keyword(s):  
Experimental Studies ◽  
Vacuum Pump ◽  
Suction Pressure ◽  
Pressure Reduction ◽  
Governing Equations ◽  
Flow Through ◽  
Definition Of ◽  
Liquid Ring

A supersonic gas ejector in conjunction with a liquid ring vacuum pump is used for creating and maintaining vacuum in a chamber for technological purposes. In this paper the authors submit an overview about the problematics of suction pressure reduction with a supersonic gas ejector used as a pre-stage of a liquid ring vacuum pump. This system has also the function of a cavitation protection due to the higher pressure present at the suction throat of the vacuum pump. A part of this paper is devoted to the governing equations used at the definition of the flow through an ejector. The experimental studies are then carried out in or own laboratory for verification purposes.

scholarly journals PENGADAAN POMPA AIR BERDAYA 4KW UNTUK PENAMBAH DEBIT AIR DI DAERAH PERSAWAHAN SAWAH BALONG

2020 ◽  
Author(s):  
Yandi Kurniawan
Keyword(s):  
Water Supply ◽  
Rice Field ◽  
Water Source ◽  
Dry Season ◽  
The Other ◽  
Water Pump ◽  
Other Hand

Sawah balong rice field, oftenly have a decrease amount of water in the dry season, so the farmers have to do some queue so its rice field can have some water supply, this condition cause a conflict between the farmers, the goals of this research is to design a 4kW water pump driver to give the farmers of the sawah balong the solution for the problem because of the queue for the water irrigation because of the low amount of water supply for the rice field, in the other hand this research make the farmers of the sawah balong be more productive. The method that being use is study literature and observation. To solve the problem first we have to search for water source alternatives that located near the region of sawah balong, then design a waterpump system to irrigate the water source that has been find , the procurement of this waterpump can be a solution for the decrease amount of water that irrigate the sawah balong in the dry season

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