scholarly journals Perancangan Plts Sebagai Sumber Energi Pemanas Kolam Pendederan Ikan Nila

2020 ◽  
Vol 3 (2) ◽  
pp. 38-44
Author(s):  
IG Suputra Widharma ◽  
IN Sunaya ◽  
IM Sajayasa ◽  
IGN Sangka
Keyword(s):  
Solar Cell ◽  
Electric Fish ◽  
Fish Larvae ◽  
Average Power ◽  
Environmental Parameters ◽  
Cold Weather ◽  
Renewable Source ◽  
Sustainable Environment ◽  
Living Organisms ◽  
Halogen Lamps

This research has been done in the larvae fish pond in Lumbung Village, Tabanan regency. Surya cell is device consists of solar cell, charge controller, and batterei that change sunlight to be electric. Fish like many living organisms have specific tolerant range of various environmental parameters, thus fish larvae ponds of specific types of fish species requires certain conditions that have to be reached. Larvae that have hatched, should be raised in a special place, when their ages are 5-7 days. And it becomes threat if in interval 3 – 4 weeks happen cold weather that make the larvae will be died. To avoid the cold weather occurs, warming can be done with heater or halogen lamps. Solar Energy is produced by the Sunlight is a non-vanishing renewable source of energy which is free from ecofriendly. The highest intensity of sunlight occurs at 11.00-14.00 with the value of the intensity of sunlight is around 96.000 - 112.500 lumen and average power about 24 – 28 W. Monitoring and taking actions to maintain the habitat’s sustainable environment for certain larvae inside of fish larvae ponds. Halogen lamps give the warmth to the water with the intensity of the light in cash, so that the water temperature is located between 27 – 30 oC at the night.

scholarly journals TVOCs and PM 2.5 in Naturally Ventilated Homes: Three Case Studies in a Mild Climate

2019 ◽  
Vol 11 (22) ◽  
pp. 6225 ◽  
Author(s):  
Jesica Fernández-Agüera ◽  
Samuel Dominguez-Amarillo ◽  
Marco Fornaciari ◽  
Fabio Orlandi
Keyword(s):  
Social Housing ◽  
Primary Source ◽  
Environmental Parameters ◽  
Cold Weather ◽  
Southern Europe ◽  
Pm 2.5 ◽  
Housing Developments ◽  
Indoor Sources ◽  
Indoor Contaminants ◽  
Different Seasons

In southern Europe, the present stock of social housing is ventilated naturally, with practice varying in the different seasons of the year. In winter, windows are kept closed most of the day with the exception of short periods for ventilation, whereas the rest of the year the windows are almost permanently open. In cold weather, air changes depend primarily on the air infiltrating across the envelope and when the temperature is warm, on the air flowing in through open windows. CO2, PM2.5, and TVOC concentration patterns were gathered over a year’s time in three social housing developments in southern Europe with different airtightness conditions and analyzed to determine possible relationships between environmental parameters and occupants’ use profiles. Correlations were found between TVOC and CO2 concentrations, for human activity was identified as the primary source of indoor contaminants: peak TVOC concentrations were related to specific household activities such as cooking or leisure. Indoor and outdoor PM2.5 concentrations were likewise observed to be correlated, although not linearly due to the presence of indoor sources. Ventilation as presently practiced in winter appears to be insufficient to dilute indoor contaminants in all three buildings, nor does summertime behavior guarantee air quality.

scholarly journals POTENSI DAYA DARI SOLAR CELL TERPASANG SESUAI DENGAN POLA ATAP RUMAH BERBASIS ARSITEKTUR BALI

2019 ◽  
Vol 6 (1) ◽  
pp. 21
Author(s):  
I Nyoman Apriana Arta Putra ◽  
Wayan Arta Wijaya ◽  
I.G.N Janardana
Keyword(s):  
Renewable Energy ◽  
Solar Cell ◽  
Renewable Energy Sources ◽  
Average Power ◽  
Solar Panels ◽  
The North ◽  
Southern Side ◽  
Maximum Warming ◽  
North And South

This study was conducted to determine the potential power obtained at home with the Balinese roof pattern when developed with renewable energy sources. Solar energy as a source of renewable energy has enormous potential, especially in Indonesia. Balinese architecture-based roof pattern has 4 fields, the north and south side are trapezoidal and the east and west sides are triangular with 350 roof inclination angle. One of Bali's traditional buildings is Bale Sari, which is a case study with an area of ??32.64 m2, length 6.40m and width 5.10m. Bale Sari's roof has a pyramid pattern, each side having the same length and width. Methods performed in this study with manual calculations to find the potential maximum power. The total number of solar panels used is 234 pieces. With this amount, obtained the best potential results on the southern side, with an average power gained of 667.67 Watt. The results are obtained when the sun is at a maximum warming point or precisely when the weather is sunny. The result of the average power potential analysis obtained by solar cell installed on the roof of the Balinese architecture house is 1,935.49 Watt.

scholarly journals Effect of Different Environmental Factors on Performance of Solar Panel

2019 ◽  
Vol 8 (11) ◽  
pp. 15-18
Keyword(s):  
Solar Cell ◽  
Environmental Factors ◽  
Light Intensity ◽  
Solar Panel ◽  
Renewable Sources ◽  
Solar Cell Performance ◽  
Renewable Source ◽  
Renewable Sources Of Energy ◽  
New Development ◽  
Day By Day

Solar power is future of our planet due to the depletion of non-renewable sources of energy. The renewable sources of energy are responsible for 80% of world’s power and we all are directly dependent on non-renewable source which will only last for 1 or 2 decades. Due to increase in power demands new development in renewable sources of energy are going on due to which on commercial level solar cell achieved an efficiency of 15-20% and improving day by day. Some factors affects the performance of solar panel and decreases its output while some factors improves the efficiency of solar cell and improves its performance. These factors includes temperature of solar panel, humidity, and wind velocity, light intensity, altitude and air pressure along with many other factors. In this paper these factors are discussed along with their impact on solar cell performance

scholarly journals STUDI PEMAKAIAN DAYA SOLAR CELL-HYBRID OFF GRID GEDUNG LABORATORIUM ENERGI SURYA-JURUSAN TEKNIK KONVERSI ENERGI-POLBAN

2020 ◽  
Vol 1 (2) ◽  
pp. 90-96
Author(s):  
Ignatius Riyadi Mardiyanto ◽  
Alvera Apridalianti Melkias
Keyword(s):  
Solar Cell ◽  
Power Plant ◽  
Solar Energy ◽  
Solar Power ◽  
Supply And Demand ◽  
Solar Power Plant ◽  
Alternative Source ◽  
Renewable Source ◽  
Engineering Department ◽  
Electricity Energy Consumption

Solar energy is a renewable source that has never been exhausted, this energy will not reveal pollution into environment such as another power plant. Solar Power Plant is one of renewable source that become on alternative source in the future. One of application of this system is Hybrid Solar Power Plant, this power plant it is use to accomplish electricity energy consumption in Solar Laboratory Energy Conversion Engineering POLBAN with benefitted solar energy as electricity energy soarce. Electricity of energy there is resulted dependent on high and low solar light intensity. This paper is analyzed for both of supply and demand electricity in Laboratory of Solar Energy - Energy Conservation Engineering Department-POLBAN.

Towards Dynamic Biological Oceanography and Limnology

1984 ◽  
Vol 41 (1) ◽  
pp. 2-19 ◽  
Author(s):  
L. Legendre ◽  
S. Demers
Keyword(s):  
Aquatic Ecosystems ◽  
Fish Larvae ◽  
Integrated Approach ◽  
Temporal Scales ◽  
Spatial And Temporal Scales ◽  
Biological Oceanography ◽  
Biological Responses ◽  
Hydrodynamic Processes ◽  
Living Organisms ◽  
The One

A new approach that couples the study of biological and hydrodynamic processes has progressively emerged in the biological oceanographic and limnological literature. A review of a large number of papers on phytoplankton, zooplankton, and fish larvae published in the last decade brings out the major characteristics of a new discipline, termed by the authors "dynamic biological oceanography" or "dynamic biological limnology." These studies recognize hydrodynamics as the driving force of aquatic ecosystems, so that the various physical, chemical, and biological factors of the environment are considered as the proximal agents through which hydrodynamic variability is transmitted to living organisms. A central idea to dynamic biological oceanography and limnology is that different hydrodynamic processes and different biological responses occur on different spatial and temporal scales. This leads to a discussion of spatial and temporal scales on both the horizontal and vertical axes and of the relationships between the physical and biological scales, on the one hand, and the sampling scale, on the other. Anticipated forthcoming developments concern the eventual merging of horizontal and vertical studies in an integrated approach to aquatic ecosystems and the design of new sampling techniques and schemes to probe the significant scales of variation in dynamic biological oceanography and limnology. Common lines of research are suggested for the coming years.

Microplastics in lakes and rivers: an issue of emerging significance to limnology

2021 ◽  
Author(s):  
Genevieve D’Avignon ◽  
Irene Gregory-Eaves ◽  
Anthony Ricciardi
Keyword(s):  
Field Survey ◽  
Size Range ◽  
Fish Larvae ◽  
Toxic Substances ◽  
Environmental Persistence ◽  
Ecological Processes ◽  
Water Columns ◽  
Spatio Temporal ◽  
Living Organisms ◽  
Contaminated Marine Sediments

Microplastics—plastic particles in the size range of planktonic organisms—have been found in the water columns and sediments of lakes and rivers globally. The number and mass of plastic particles drifting through a river can exceed those of living organisms such as zooplankton and fish larvae. In freshwater sediments, concentrations of microplastics reach the same magnitude as in the world’s most contaminated marine sediments. Such particles are derived from a unique biogeochemical cycle that ultimately influences productivity, biodiversity, and ecosystem functioning. Furthermore, microplastics act as vectors of toxic substances to invertebrates, fishes, herpetofauna, and waterfowl. We contend that the concentration of this distinct particle component is an ecologically significant parameter of inland waterbodies because of its ubiquity, environmental persistence, and interactions with key ecological processes. No environmental field survey that has searched for microplastics has yet failed to detect their presence. Standardized limnological protocols are needed to compare spatio-temporal variation in the concentration of microplastics within and across watersheds. Data obtained from such protocols would facilitate environmental monitoring and inform policy for managing plastic waste; furthermore, they would enable more accurate modeling of contaminant cycling and the development of a global plastic budget that identifies sources, distribution and circulation pathways, reservoir size and retention times.

scholarly journals Construction of Tungsten Halogen, Pulsed LED, and Combined Tungsten Halogen-LED Solar Simulators for Solar CellI-VCharacterization and Electrical Parameters Determination

2012 ◽  
Vol 2012 ◽  
pp. 1-9 ◽  
Author(s):  
Anon Namin ◽  
Chaya Jivacate ◽  
Dhirayut Chenvidhya ◽  
Krissanapong Kirtikara ◽  
Jutturit Thongpron
Keyword(s):  
Solar Cell ◽  
Supply Voltage ◽  
Temporal Stability ◽  
Pulse Mode ◽  
High Irradiance ◽  
Electrical Parameters ◽  
Solar Simulator ◽  
Spatial Uniformity ◽  
Xenon Lamps ◽  
Halogen Lamps

I-Vcharacterization of solar cells is generally done under natural sunlight or solar simulators operating in either a continuous mode or a pulse mode. Simulators are classified on three features of irradiance, namely, spectral match with respect to air mass 1.5, spatial uniformity, and temporal stability. Commercial solar simulators use Xenon lamps and halogen lamps, whereas LED-based solar simulators are being developed. In this work, we build and test seven simulators for solar cell characterization, namely, one tungsten halogen simulator, four monochromatic (red, green, blue, and white) LED simulators, one multicolor LED simulator, and one tungsten halogen-blue LED simulator. The seven simulators provide testing at nonstandard test condition. High irradiance from simulators is obtained by employing elevated supply voltage to tungsten halogen lamps and high pulsing voltages to LEDs. This new approach leads to higher irradiance not previously obtained from tungsten halogen lamps and LEDs. FromI-Vcurves, electrical parameters of solar cell are made and corrected based on methods recommended in the IEC 60891 Standards. Corrected values obtained from non-STC measurements are in good agreement with those obtained from Class AAA solar simulator.

scholarly journals Luminescence Spectra of C6H9EuO6 x H2O Doped Synthetic Opals Matrix Containing Bi-Active Dielectrics

2019 ◽  
Vol 8 (3) ◽  
pp. 1
Author(s):  
Bilal Abu Sal
Keyword(s):  
Solar Cell ◽  
Average Power ◽  
Experimental Studies ◽  
Luminescence Spectra ◽  
Solar Cell Efficiency ◽  
Cell Efficiency ◽  
Ultraviolet Excitation ◽  
The Matrix ◽  
Synthetic Opals ◽  
Matrix Nanocomposites

This paper presents the results of experimental studies for the luminescence spectral intensity redistribution of opal photonic crystals containing various active dielectrics - Bi12SiO20, opal - Bi2TeO5 and opal - NaBi(MoO4)2 matrix nanocomposites and filled with europium C6H9EuO6 x H2O salt. Ultraviolet excitation was provided by semiconductor laser operating at wavelengths of 400nm and 100 mW average power. An increase in the integral luminescence intensity of the matrix composite opal - Bi12SiO20: Eu3+ was found. The possibility of the participation of bismuth ions as a co-activator and luminescence concentrator also is analyzed. It has been proposed to use opal-Bi12SiO20 nanocomposite filled with europium as a potentially attractive material to improving the solar cell efficiency.

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