Cooling System for Field Service Clothes Pt. Pln Persero based on Arduino Nano

2020 ◽  
Vol 4 (2) ◽  
pp. 121-130
Author(s):  
Septian Hadi Wirdyanto
Keyword(s):  
Cooling System ◽  
Working Environment ◽  
Whole Body ◽  
Design System ◽  
Entire Body ◽  
Transmission Tower ◽  
Excessive Sweating ◽  
Field Service ◽  
Environment Temperature ◽  
The Republic

Work clothing is a type of clothing that is used specifically by a company or agency to perform a job for the benefit of the company. One of them is the work clothes worn by the substation and transmission maintenance team of PT. PLN (PERSERO). In the design and uniform provisions for transmission substation maintenance teams have been regulated in the Regulation of the Minister of Manpower and Transmigration of the Republic of Indonesia Number Per.08 / Men / Vii / 2010 concerning Personal Protective Equipment. The whole body must be covered by work clothes, SNI standard worker helmets, gloves and shoes. The entire body of the maintenance team must be protected to create security in carrying out the work of securing the area around the substation and transmission tower. In carrying out the work of substation and transmission maintenance teams are often exposed to direct sunlight. So that the maintenance team often feels stifling when working in a high enough ambient temperature, coupled with the uniform covering the whole body causes discomfort to the substation maintenance team and transmission due to excessive sweating. Meanwhile, work clothes that cover the whole body are an obligation for the safety of workers. From this research, the results of the cooling system for the field service for the maintenance team of PT. PLN PERSERO Based on Arduino Nano. The system design in the program uses the C programming language with Arduino software.The idea is to execute the design system, using the ATMega 328p microcontroller as a design control system with a DHT 11 sensor as a temperature sensor which will then activate the cooling fan as a cooling system and the buzzer as an indicator of high working environment temperature. Design system performance supported by 18650 battery power source.

scholarly journals THE EFFECT OF WORKING ENVIRONMENT ON SPECIALIST PHYSICIANS’ PERFORMANCE AT MEDAN TEACHING HOSPITAL

2021 ◽  
Vol 21 (1) ◽  
pp. 9-20
Author(s):  
Gerry Silaban ◽  
Zulfendri ◽  
Arfah Mardiana Lubis ◽  
Putri Nasution
Keyword(s):  
Work Environment ◽  
Sampling Technique ◽  
Working Environment ◽  
Teaching Hospitals ◽  
Noise Sources ◽  
Cross Sectional ◽  
Air Conditioners ◽  
Exact Test ◽  
Environment Temperature ◽  
The Republic

The condition of work environment (patient room) is often out of concern to the management so that they do not meet the requirements of Regulation of Minister of Health of the Republic of Indonesia (Permenkes) No. 1204 of 2004 concerning Hospital Environmental Health Requirements. It will have implications for the performance of the doctor (specialist). This study aimed to describe the conditions of the work environment (temperature, lighting, and dust) and the doctor's performance and the relationship between the work environment and the doctor's performance. This research was a quantitative study with a cross sectional design. The research was conducted in 3 teaching hospitals in Medan, namely H. Adam Malik Hospital, dr. Pirngadi and RSU USU during April - November 2018. The study population was 236 people with a sample of 22 people taken using incidental sampling technique. The data obtained by measuring the conditions of the work environment (temperature, lighting, and dust) and interviews using a questionnaire to measure the performance of doctors. Data analysis used Fisher's Exact Test. The results showed that there was no influence of work environment conditions on the doctor's performance, however the temperature and lighting conditions did not meet the requirements. Meanwhile, the temperature of the work room affected the behavior of doctors. Thus, the hospital management needs to take corrective action on working environment conditions by replacing old air conditioners or regularly maintaining air conditioners, setting up a barrier against noise sources, and replacing the bulb with a lighter intensity. The medical committee needs to regularly supervise the work of doctors so that their performance is achieved according to the target.

scholarly journals Perceived hazardous physical work environments and job-related affective well-being of navy officers aboard the Republic of Korea Navy ships and submarines in South Korea

2021 ◽  
pp. bmjmilitary-2020-001702
Author(s):  
Doseon Jo ◽  
C K Koh
Keyword(s):  
Air Pollution ◽  
Personal Space ◽  
Well Being ◽  
Work Environments ◽  
Working Environment ◽  
Republic Of Korea ◽  
Physical Work ◽  
Thermal Discomfort ◽  
The Republic ◽  
Naval Officers

IntroductionNavy ships and submarines are important military measures that protect the Republic of Korea. They also comprise naval officers’ workplace. However, few studies have examined naval officers’ working environment and their job-related well-being. This study aimed to explore exposure to hazardous work environments among navy officers aboard ships and submarines and their association with job-related affective well-being.MethodsThis was a cross-sectional descriptive study. The sample comprised 146 officers from 4 navy ships and 98 officers from 5 submarines. Items of exposure to the eight types of hazardous work environments and the Job-related Affective Well-being Scale (JAWS) were included in the self-report survey questionnaires.ResultsThe most common hazards reported by officers aboard navy ships were vibration (63.7%) and air pollution (56.2%). For submarine officers, these hazards were lack of personal space (72.4%) and air pollution (67.3%). The average JAWS score for ship officers and submarine officers was 69.81 (SD=10.89) and 70.50 (SD=10.83), respectively. For ship officers, exposure to air pollution, noise, vibration, thermal discomfort during summer or winter and lack of personal space were significantly correlated with lower JAWS scores. For submarine officers, exposure to fire, burning or electrical shock, air pollution, noise, thermal discomfort during summer or winter and lack of personal space were significantly correlated with lower JAWS scores.ConclusionsThis study revealed that some naval officers aboard ships or submarines are exposed to hazardous work environments. Moreover, certain types of hazardous work environments were associated with naval officers’ job-related affective well-being.

Rate of loss of radioiron from mouse and man

1960 ◽  
Vol 198 (4) ◽  
pp. 784-786 ◽  
Author(s):  
John D. Bonnet ◽  
Alan L. Orvis ◽  
Albert B. Hagedorn ◽  
Charles A. Owen
Keyword(s):  
Life Span ◽  
Half Life ◽  
Whole Body ◽  
Entire Body ◽  
Rapid Loss ◽  
Male And Female ◽  
Female Mice ◽  
Steady Rate ◽  
Normal Man ◽  
The Difference

Forty-two male and female mice, 8 weeks old, were given radioiron (Fe59) in doses of 0.006–0.1 µc, containing 0.013–0.17 µg of iron, by intraperitoneal or intravenous routes. Assays of the radioactivity of the whole body revealed an initial rapid loss of Fe59 (15–20%) lasting about 6 days. Thereafter the Fe59 left the mice at a steady rate of 0.39%/day (half-life 180 days). One 34-year-old normal man was given 10.6 µc of Fe59, containing 8.2 µg of iron, intravenously. Based on counts from the entire body, the biologic rate of loss of the Fe59 was about 0.14%/day (half-life 500 days), and there was little or no initial loss such as occurred in the mouse. The Fe59 in the circulating erythrocytes was essentially unchanged for the first 3 months. It then fell to a new level of about 90% of the previous one; the mid-point of the fall was about 120 days after the administration of the radioiron. The difference in the rates of loss of radioiron from mice and man seems to be related primarily to the life span of the circulating red cells.

scholarly journals Occupational Vibration in Urban Bus and Influence on Driver’s Lower Limbs

2018 ◽  
Vol 4 (1) ◽  
pp. 56-66
Author(s):  
M. Cvetkovic ◽  
J. Santos Baptista ◽  
M. A. Pires Vaz
Keyword(s):  
Whole Body Vibration ◽  
Working Environment ◽  
Lower Limbs ◽  
Whole Body ◽  
Body Vibration ◽  
Prisma Statement ◽  
Physical Changes ◽  
Iso 2631 ◽  
The Impact ◽  
Whole Body Vibrations

The whole-body vibration occurs in many occupational activities, promoting discomfort in the working environment and inducing a variety of psycho – physical changes where consequences as a permanent dysfunction of certain parts of the organism may occur. The main goal of this short systematic review is finding the articles with the most reliable results relating whole-body vibrations to buses and, to compare them with the results of drivers’ lower limbs musculoskeletal disease which occurs as a consequence of many year exposure. PRISMA Statement Methodology was used and thereby 27 Scientific Journals and 25 Index - Database were searched through where 3996 works were found, of which 24 were included in this paper. As a leading standard for analysis of the whole-body vibration the ISO 2631 – 1 is used, while in some papers as an additional standard the ISO 2631-5 is also used for the sake of better understanding the vibrations. Furthermore, the European Directive 2002/44 / EC is included where a daily action exposure to the whole-body vibrations is exactly deter-mined. All the results presented in the paper were compared with the aforesaid standards. After having searched the databases, papers that deal with research of the impact of the vibration on the driver’s lower limbs did not contain any information’s on the described problem.

scholarly journals OPTIMASI DESAIN TERMOHIDROLIKA TERAS DAN SISTEM PENDINGIN REAKTOR RISET INOVATIF DAYA TINGGI

2015 ◽  
Vol 17 (3) ◽  
pp. 127 ◽  
Author(s):  
Endiah Puji Hastuti ◽  
Muhammad Subekti ◽  
Sukmanto Dibyo ◽  
M. Darwis Isnaini
Keyword(s):  
Conceptual Design ◽  
High Power ◽  
Research Reactor ◽  
Cooling System ◽  
Flow Boiling ◽  
Reactor Core ◽  
System Optimization ◽  
Hydraulic Calculation ◽  
Design System ◽  
Steady State Condition

ABSTRAK OPTIMASI DESAIN TERMOHIDROLIKA TERAS DAN SISTEM PENDINGIN REAKTOR RISET INOVATIF DAYA TINGGI. Implementasi reaktor inovasi telah diterapkan pada berbagai reaktor riset baru yang saat ini sedang dibangun.  Pada saat ini BATAN sedang merancang desain konseptual reaktor riset daya tinggi yang telah masuk pada tahap optimasi desain. Spesifikasi desain konseptual reaktor riset inovatif adalah reaktor tipe kolam berpendingin air dan reflektor D2O. Teras reaktor memiliki kisi 5x5 dengan 16 bahan bakar dan 4 batang kendali. Teras reaktor berada di dalam tabung berisi D2O yang berfungsi sebagai posisi iradiasi. Daya reaktor 50 MW didesain untuk membangkitkan fluks neutron termal sebesar 5x1014 n/cm2s. Teras reaktor berbentuk kompak dan menggunakan bahan bakar U9Mo-Al dengan tingkat muat uranium 7-9 gU/cm3. Desain termohidrolika yang mencakup pemodelan, perhitungan dan analisis kecukupan pendingin dibuat sinergi dengan desain fisika teras agar keselamatan reaktor terjamin. Makalah ini bertujuan menyampaikan hasil analisis perhitungan termohidrolika teras dan sistem reaktor riset inovatif pada kondisi tunak. Analisis dilakukan menggunakan program perhitungan yang telah tervalidasi, masing-masing adalah Caudvap, PARET-ANL, Fluent dan ChemCad 6.4.1. Hasil perhitungan menunjukkan bahwa pembangkitan panas yang tinggi dapat dipindahkan tanpa menyebabkan pendidihan dengan menerapkan desain teras reaktor bertekanan, di samping itu desain awal komponen utama sistem pembuangan panas yang terintegrasi telah dilakukan, sehingga konseptual desain termohidrolika RRI-50 dapat diselesaikan. Kata kunci : reaktor riset inovatif, Caudvap, PARET-ANL, Fluent, ChemCad 6.4.1.  ABSTRACT THERMALHYDRAULIC DESIGN AND COOLING SYSTEM OPTIMIZATION OF THE HIGH POWER INOVATIVE RESEARCH REACTOR. Reactor innovation has been implemented in a variety of new research reactors that currently are being built. At this time BATAN is designing a conceptual design of the high power research reactor which has entered the stage of design optimization. The conceptual design specifications of the innovative research reactor is a pool type reactor, water-cooled and reflected by D2O. The reactor core has a 5 x 5 grid with 16 fuels and 4 control rods, which is inserted into a tube containing D2O as an irradiation position. Reactor power of 50 MW is designed to generate thermal neutron flux of 5x1014 n/cm2s. The compact core reactor is using U9Mo-Al fuel with uranium loading of 7-9 gU/cm3. Thermal hydraulic design includes modeling, calculation and analysis of the adequacy of coolant created synergy with the physical design of reactor safety. This paper aims to deliver the results of thermal hydraulic calculation and system design analysis at steady state condition. The analysis was done using various calculation programs that have been validated, i.e. Caudvap, PARET-ANL, Fluent and ChemCad 6.4.1. The calculation results show that the heat generation can be transfered without causing a two phase flow boiling by applying pressurized reactor core design, while the main components of initial design system with an integrated heat dissipation has been done, to complete the conceptual design of the RRI-50 thermalhydraulics. Keywords : inovative research reactor, Caudvap, PARET-ANL, Fluent, ChemCad 6.4.1.

Show, Don't Tell: Multimodal Story Feedback in a K–1 Play-Based Writing Unit

2021 ◽  
Vol 123 (3) ◽  
pp. 1-24
Author(s):  
Christy Wessel Powell
Keyword(s):  
Participant Observation ◽  
Video Data ◽  
Whole Body ◽  
Entire Body ◽  
Acting Out ◽  
Multimodal Feedback ◽  
Writing Curriculum ◽  
Teacher Researcher ◽  
Writing Feedback ◽  
Definition Of

Background With standardization ever squeezing creative curricula in K–1 classrooms, creating time for a play-based multimodal writing curriculum that leverages children's strengths as storytellers is revolutionary. Due in part to accountability policy pressures, print-based writing and verbocentric writing feedback are still often privileged in school curricula. And yet, children are natural whole-body storytellers who will be asked to write and present ideas in all sorts of forms. In order to leverage children's storytelling strengths, we need to teach writing through multiple modes: This means expanding both writing instruction and the types of feedback offered to writers in primary classrooms. Research Questions This study examines two questions: How is feedback being given, and what impact does it have on children's storytelling? How is play/storying being sanctioned? Setting & Participants The study took place in a K–1 classroom in an inquiry-based, project-based school in the U.S. Midwest during a month-long storytelling workshop unit. Participants included two co-teachers and 46 children aged 5 to 7. Research Design This qualitative study used ethnographic methods and participant observation. Data Collection & Analysis Video data were collected during workshop each day for one month, including minilessons, writing time, and share time, which is the focus of this article. Discourse analysis and a multimodality theoretical lens were used to analyze how children gave one another feedback on their stories through embodied demonstration, gesture, acting, out, or copying one another's storytelling devices. Findings Findings indicate that children's acting/embodiment, humor/parody, and copying all worked as effective forms of multimodal feedback, which ultimately functioned as teaching for developing peers’ storytelling strategies and skills. However, teachers inadvertently privileged language alone via narration, or language with demonstration in feedback sessions. Conclusions Teacher/researcher collaborations should explore ways to reimagine forms of writer's feedback that include and account for demonstration, copying, and impromptu performance and that, ultimately, open up the definition of what counts as writing at school. Um, you should work on making your story, like, real. Because, um, you're going all over the place [wiggles entire body to illustrate]—Allen, age 6

Feasibility Assessment of Air-Cooling System As an Ultimate Heat Sink of the ATOM System

2018 ◽  
Author(s):  
Doyoung Shin ◽  
Gwang Hyeok Seo ◽  
Min Wook Na ◽  
Sung Joong Kim ◽  
Yonghee Kim ◽  
...  
Keyword(s):  
Flow Rate ◽  
Heat Sink ◽  
Cooling System ◽  
Air Cooling ◽  
Primary Coolant ◽  
Final Heat ◽  
Feasibility Assessment ◽  
Environment Temperature ◽  
Air Cooling System ◽  
Atom System

Nowadays Small Modular Reactors (SMRs) have been receiving considerable attentions worldwide for potential advantages of an excellent flexibility for siting, low capital investment, and advanced safety. In Korea, a new research project has launched for the development of a conceptual design of a further advanced SMR which aims for a naturally-safe and autonomous operation, so called Autonomous Transportable On-demand reactor Module (ATOM). Major design objectives of the ATOM system are focused on the soluble boron-free (SBF) primary coolant system which enables the SMR to operate automatically in a load following mode. For the secondary system, the SCO2 power conversion cycle with air-cooling system as a final heat sink is being considered. The air-cooling system is expected to show flexible response even to extreme environmental conditions, such as a desert where utilization of cooling water is limited. The objective of this study is a feasibility assessment for applying the air-cooling system as a final heat sink of the ATOM by means of experimental work. As a 1st phase of the ATOM development, we first conducted the experiments using a typically considered primary coolant, water-steam, to verify that air flow has enough cooling capability to remove developed heat which the coolant carries. An Integrated Condensation Loop with Air-cooling System (ICLASS) experimental facility with three pressure boundaries (Steam, coolant, and air) was established. The cooling capability of the air-cooling system was evaluated by varying steam mass flow rate, coolant flow rate, and air environment temperature as experiment variables. Overall heat transfer rate by condensation was compared with numerical simulations of a 1D thermal-hydraulics analysis code, using the MARS model of the ICLASS facility.

scholarly journals Human response to the thermal indoor environment created by a radiant, and a combined radiant and convective cooling system

2019 ◽  
Vol 111 ◽  
pp. 02060
Author(s):  
Ongun B. Kazanci ◽  
Dolaana Khovalyg ◽  
Takayoshi Iida ◽  
Yoshitaka Uno ◽  
Tomo-oki Ukiana ◽  
...  
Keyword(s):  
Human Subject ◽  
Indoor Environment ◽  
Cooling System ◽  
Human Subjects ◽  
Whole Body ◽  
Indoor Environments ◽  
Climate Chamber ◽  
Convective Cooling ◽  
Physical Measurements ◽  
Two Systems

This study reports the main findings from a series of human subject experiments, where the subjects were exposed to the different indoor environments created by different cooling systems. The studied systems were a radiant cooling system (chilled ceiling and mixing ventilation, CCMV), and a combined radiant and convective cooling system (radiant diffuse ceiling ventilation, RDCV). The experiments were conducted in a climate chamber under controlled conditions. The climate chamber was configured as a two-person office room. 24 human subjects (12 female and 12 male) were chosen. The exposure lasted three hours and the participants were allowed to work on their own tasks (normal office work) during the exposure. The cooling load was 54 W/m2 and the room temperature at a reference location was kept constant at 26°C (summer conditions). The results show that under both systems, whole body thermal sensation was between slightly warm and neutral (closer to neutral with the RDCV system), and the overall thermal acceptability was almost the same for both systems (close to clearly acceptable). The satisfaction of the human subjects with the thermal environment was very close under the two systems; between satisfactory and slightly satisfactory (closer to satisfactory). Air movement acceptability (slightly higher and closer to clearly acceptable with the RDCV system) was also very close with the two systems. The results of the human subject experiments agree well with the physical measurements of the thermal indoor environment and confirm that the studied systems created very similar thermal indoor environments.

scholarly journals Whole-Body MRI in Children and Adolescents – S1 Guideline

2019 ◽  
Vol 191 (07) ◽  
pp. 618-625 ◽  
Author(s):  
Jürgen F. Schaefer ◽  
Lars Daniel Berthold ◽  
Gabriele Hahn ◽  
Thekla von Kalle ◽  
Jörg Detlev Moritz ◽  
...  
Keyword(s):  
High Resolution ◽  
Children And Adolescents ◽  
Whole Body ◽  
Imaging Method ◽  
Entire Body ◽  
Whole Body Mri ◽  
Technical Requirements ◽  
High Resolution Images

Whole-body MRI is an imaging method that uses advanced modern MRI equipment to provide high-resolution images of the entire body. The goal of these guidelines is to specify the indications for which whole-body MRI can be recommended in children and adolescents and to describe the necessary technical requirements. Citation Format

Design on Closed Loop Soft Water Cooling System for Shougang Qiangang No.3 BF

2013 ◽  
Vol 634-638 ◽  
pp. 3123-3127
Author(s):  
Lin Li ◽  
Fu Ming Zhang ◽  
Yong Liu ◽  
Dai Jun Wang ◽  
Yong Qi Li
Keyword(s):  
Closed Loop ◽  
Cooling System ◽  
Soft Water ◽  
Design System ◽  
Corrosion Mechanism ◽  
Water Cooling ◽  
Full Account ◽  
Brick Lining ◽  
Lining Structure ◽  
Water Cooling System

Ability to improve cooling system, avoid untimely damage of BF lining and coolers, reduce maintenance frequency and prolong maintenance period during the furnace campaign, it is imperative for BF longevity. Describe development of cooling system, illustrate economic rationality and safe reliability of closed loop soft water cooling system, stress equipments, process, design, system measurement and control on closed loop soft water cooling system for Shougang Qiangang No.3 BF. Take full account of BF working condition, lining structure and corrosion mechanism, combine actual investment, choose advanced and rational coolers; develop segmentation design for cooling system, strengthen BF cooling effectively, boost system steering rate in order to reduce temperature of brick lining, prolong lifetime of brick lining, keep the lining integrity, maintain rational furnace profile, ensure BF production and longevity.

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