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Numerical analysis for temperature proﬁle of the closed house using computational ﬂuid dynamics (Conference Paper)

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Mechanical Engineering Department, Universitas Negeri Semarang, Gunungpati Semarang, 50229, Indonesia Department of Mechanical Engineering, Faculty of Engineering, Universitas Diponegoro, Jl. Prof. Soedharto, S.H., Tembalang, Semarang, 50725, Indonesia

Abstract

This study aims to analyze the air temperature distribution in the closed house system for broiler using ABAQUS CFD Model. The obtained data is used for placing the temperature sensor before making the control system for the closed house. The dimesion of the experimental house was 30 m × 12 m × 2 m (length × width × height) which could be occupied by 7.500 broiler. The wall was made from expose mercy brick and curtain, ventilation system used 7 exhaust fan with diameter 1 m and 2 cooling unit, the roof was made from wood, and system used 45 of 7 watt lamp. The results of the analysis show that temperature distribution occurs on temperature 21-33.5°C and still relatively comfortable for broiler at the age of 1-21days. The air temperature distribution near the cooling unit is lower and increases to near the exhaust fan. In addition, the air temperature in the area near the roof is more high than others.

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AIP Conference Proceedings

Volume 1941, 28 March 2018, Article number 020032

6th International Conference on Education, Concept, and Application of Green Technology, EIC 2017; Grand Candi HotelSemarang; Indonesia; 11 October 2017 through 11 October 2017;

Code 135426

Setiadi, R.^a  Munadi^b Tauviqirrahman, M.^b 

a b

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Broiler chickens | Heat stress | Acute heat

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ISSN: 0094243X ISBN: 978-073541633-8

Source Type: Conference Proceeding Original language: English

DOI: 10.1063/1.5028090

Document Type: Conference Paper

Volume Editors: Nurmasitah S.,Kusumastuti A.,Hartanto D.,Prasetiawan H.

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Publisher: American Institute of Physics Inc.

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Engineering International Conference (EIC) of FT UNNES 2017

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Fakultas Teknik Universitas Negeri Semarang akan mengadakan Seminar Internasional yang ke enam tahun 2017 dengan tema: Education, Concept, and Application of Green

Technology. Seminar ini akan dilaksanakan pada tanggal 11 Oktober 2017 di Hotel Grand Candi, Semarang yang menghadirkan lima keynote speakers sebagai berikut:

1. Dr. Trisnani Widowati, M.Si. (Home Economics Department, Universitas Negeri Semarang).

2. Prof. Dr. Abdul Latif Ahmad (Universiti Sains Malaysia).

3. Chonlatee Photong, Ph.D. (Mahasarakham University, Thailand).

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5. Prof. Feliciano B. Alagao, Ph.D. (Mindanao State University, Iligan Institute of Technology, Philippines).

Artikel yang dipresentasikan dalam seminar ini, akan dipublikasikan dalam prosiding berindeks Scopus dan artikel terpilih akan dipublikasikan pada tiga jurnal terindeks Scopus, yaitu: Journal of Physical Science, International Journal of Innovation and Learning, dan Jurnal Pendidikan IPA Indonesia. Dengan adanya Seminar Internasional ini, diharapkan dapat meningkatkan publikasi dan kerjasama internasional dalam bidang teknik dan vokasi.

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Conference date: 11 October 2017 Location: Semarang, Indonesia ISBN: 978-0-7354-1633-8

Editors: Adhi Kusumastuti, Dhoni Hartanto, Haniif Prasetiawan and Sita Nurmasitah Volume number: 1941

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Numerical analysis for temperature profile of the closed house using computational fluid dynamics: AIP Conference Proceedings: Vol 1941…

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Published Online: 28 March 2018

Numerical analysis for temperature profile of the closed house using

computational fluid dynamics

Mechanical Engineering Department, Universitas Negeri Semarang, Gunungpati Semarang, 50229, Indonesia

Department of Mechanical Engineering, Faculty of Engineering, Universitas Diponegoro, Jl. Prof.

Soedharto, S.H., Tembalang, Semarang 50725, Indonesia Corresponding author: [email protected]

Rizki Setiadi , Munadi , and Mohammad Tauviqirrahman Hide Affiliations

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5/4/2020 Numerical analysis for temperature profile of the closed house using computational fluid dynamics: AIP Conference Proceedings: Vol 1941…

https://aip.scitation.org/doi/10.1063/1.5028090 2/5

This study aims to analyze the air temperature distribution in the closed house system for broiler using ABAQUS CFD Model. The obtained data is used for placing the temperature sensor before making the control system for the closed house. The dimesion of the experimental house was 30 m × 12 m × 2 m (length × width × height) which could be occupied by 7.500 broiler. The wall was made from expose mercy brick and curtain,

ventilation system used 7 exhaust fan with diameter 1 m and 2 cooling unit, the roof was made from wood, and system used 45 of 7 watt lamp. The results of the analysis show that temperature distribution occurs on

temperature 21-33.5°C and still relatively comfortable for broiler at the age of 1-21days. The air temperature distribution near the cooling unit is lower and increases to near the exhaust fan. In addition, the air temperature in the area near the roof is more high than others.

REFERENCES

1.

R. P. Wijayanti, W. Busono and Rositawati, Differential Temperature

Influence on the Performance of Broiler Starter Period. Faculty of Animal Husbandry. Universitas Brawijaya (2013). Google Scholar

2.

J. M. Aerts, C.M. Wathes and D. Berckmans, Biosyst. Eng. 84(3), 257–

266(2003) https://doi.org/10.1016/S1537-5110(02)00285-4, Google Scholar, Crossref

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E. Sofia and Abdurrachim, Assess Theory of LPG Consumption as a Hot Source in Broilers Closed in National Seminar Proceding of Mechanical Engineering XIV (Universitas Lambung Mangkurat, Banjarmasin, 2015).

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Production, purification and utilization of biogas as fuel for internal combustion engine

Mechanical Engineering Technology Department, College of Engineering and Technology,

Mindanao State University – Iligan Institute of Technology, Andres Bonifacio Avenue, Tibanga Iligan City, Philippines

Mechanical Engineering Department, College of Engineering and Technology, Mindanao State University – Iligan Institute of Technology, Andres Bonifacio Avenue, Tibanga Iligan City,

Philippines

corresponding author: [email protected] [email protected]

Noel M. Hernandez and Eliseo P. Villanueva Hide Affiliations

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5/4/2020 Production, purification and utilization of biogas as fuel for internal combustion engine: AIP Conference Proceedings: Vol 1941, No 1

ABSTRACT

This study attempts to modify a 4-cylinder gasoline engine to run with a purified compressed biogas as substitute for fossil fuels. Water scrubbing method was used as the easiest purification technique to remove CO and iron filing for H S. The pressurized raw biogas was fed in a low cost made portable floating type gas holder with volume capacity of 0.74 m . The

purified biogas was compressed using a reciprocating compressor through a two stage series of enrichment and moisture removal process using

activated alumina into the steel cylinder to improve the quality of the methane content. The enriched biogas was filled in the LPG tank for 20 minutes at 10 bars at an average of 73.67% CH with no traces of H S as storage for engine utilization. The modification involved the installation and mounting of LPG conversion kit. A comparative analysis of the

performance and combustion characteristics of the engine was evaluated separately with gasoline and purified compressed biogas using electro- dynamometer as variable loads. The findings show that power output deterioration in compressed biogas was mainly due to high percentage of CO and other gases impurities. It also shows that because of the calorific value of biogas, the thermal efficiency is lesser than that of gasoline. It implies that the overall engine performance can be improved by removing undesirable gases in the mixture.

REFERENCES

1.

V. K. Vijay, R. Chandra, P.M.V. Subbarao and S.S. Kapdi, “Biogas Purification and Bottling into CNG Cylinders: Producing Bio-CNG from Biomass for Rural Automotive Applications,” in The 2nd Joint International Conference on Sustainable Energy and Environment (SEE), Bangkok, Thailand, (21-23 November 2006). Google Scholar

2.

E. Aquino, Design, “Construction and operation of a semi-continuous plant

2

3

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2

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Implementation effect of productive 4-stage field orientation on the student technopreneur skill in vocational schools: AIP Conference Proc…

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Implementation effect of productive 4- stage field orientation on the student technopreneur skill in vocational

schools

Vocational Lecture, Akademi Komunitas Negeri Demak, Indonesia Lecture Universitas Negeri Semarang, Indonesia

Senior Researcher, RTI International, Washington D.C., USA

Senior Education Advisor, RTI International, Washington D.C., USA Corresponding author: [email protected]

[email protected] [email protected]

[email protected]

Edy Ismail , Samsudi , Dwi Widjanarko , Peter Joyce , and Roman Stearns Hide Affiliations

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5/4/2020 Implementation effect of productive 4-stage field orientation on the student technopreneur skill in vocational schools: AIP Conference Proc…

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ABSTRACT

This model integrates project base learning by creating a product based on environmental needs. The Produktif Orientasi Lapangan 4 Tahap (POL4T) combines technical skills and entrepreneurial elements together in the learning process. This study is to implement the result of

technopreneurship learning model development which is environment- oriented by combining technology and entrepreneurship components on Machining Skill Program. This study applies research and development design by optimizing experimental subject. Data were obtained from questionnaires, learning material validation, interpersonal, intrapersonal observation forms, skills, product, teachers and students’ responses, and cognitive tasks. Expert validation and t-test calculation are applied to see how effective POL4T learning model. The result of the study is in the form of 4 steps learning model to enhance interpersonal and intrapersonal

attitudes, develop practical products which orient to society and

appropriate technology so that the products can have high selling value.

The model is effective based on the students’ post test result, which is better than the pre-test. The product obtained from POL4T model is proven to be better than the productive learning. POL4T model is recommended to be implemented for XI grade students. This is can develop entrepreneurial attitudes that are environment oriented, community needs and technical competencies students.

REFERENCES

1.

W. L. Tan, K. Egge and O. Osman, J. Int. Bus. Entrep. 11(2), 69–81 (2010).

Google Scholar 2.

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A novel dual motor drive system for three wheel electric vehicles

Faculty of Engineering, Mahasarakham University, Kham Riang, Kantarawichai, Maha Sarakham, Thailand

Corresponding author: [email protected] [email protected]

Piyapat Panmuang , Taweesak Thongsan, Nuchida Suwapaet, Juckamass Laohavanich, and Chonlatee Photong

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5/4/2020 A novel dual motor drive system for three wheel electric vehicles: AIP Conference Proceedings: Vol 1941, No 1

This paper presents a novel dual motor drive system used for three wheel electric vehicles that have one free wheel at the front and two wheels with a drive system at the end of the vehicles. A novel dual motor drive system consists of two identical DC motors that are independently controlled by its speed-torque controller. Under light load conditions, only one of the DC motors will operate around it rated whilst under hard load conditions both of the DC motors will operate. With this drive system, the motors will

operate only at its high performance at rated or else no operate to retain longer lifetime. The simulated results for the Skylab three wheel electric vehicle prototype with 8kW at full load (high torque, low speed) and around 4kW at light/normal operating loads (regular speed-torque)

showed that the proposed system provides better dynamic responses with faster overshoot current/voltage recovery time, has lower investment costs, has longer lifetime of the motors and allows the motors to always operate at their high performance and thus achieve more cost effective system compared to a single motor drive system with 8kW DC motors.

REFERENCES

1.

K. Oshiro and T. Masui, “Diffusion of low emission vehicles and their

impact on CO2 emission reduction in Japan,” Energy Policy, vol. 81, pp. 215–

225, Jun. 2015. https://doi.org/10.1016/j.enpol.2014.09.010, Google Scholar, Crossref

2.

R. R. Rank, Laboratory Directed Research and Development Program

Activities (Argonne National Laboratory Annual Report 2015, United States.

Department of Energy, 2016). Google Scholar

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C, Jeff (2017-01-17). Top 10 Plug-in Vehicle Adopting Countries of 2016 (2017, January, 23) retrieved from: hybridCars.com. Google Scholar

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l h l f h l d h // h/

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Introducing a flipped classroom to engineering students: A case study in mechanics of materials course: AIP Conference Proceedings: Vol…

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Introducing a flipped classroom to

engineering students: A case study in mechanics of materials course

Assistant Professor, Faculty of Engineering, Mahasarakham University Kamrieng, Kantarawichai, Maha Sarakham, Thailand

Corresponding author: [email protected] Nuchida Suwapaet

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ABSTRACT

Flipped classroom is basically a reversed way of learning in classroom.

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5/4/2020 Introducing a flipped classroom to engineering students: A case study in mechanics of materials course: AIP Conference Proceedings: Vol…

Lecture is brought outside classroom and available online in many forms such as video lecture and e-books. In-class time is focused more on discussions and practices such as exercises and projects. Flipped classroom was introduced to Mechanical Engineering students in

Mechanics of Materials course in 2016 academic year at Mahasarakham University, Thailand. The course was still taught in traditional way and series of video lecture were used as additional class materials outside

classroom. There were 2 groups of students that enrolled in the course in 2 different semesters. Students in 1 semester were taught in traditional way (control group) and students in 2 semester were used flipped classroom (experiment group). Students’ grades between 2 groups were compared and analyzed. Satisfaction survey of using flipped classroom was carried out and evaluated. There were 3 aspects of evaluation which were content, varieties of activity, and functions. Results showed that the course’s GPA of experiment group was 1.92 which was greater than the control group of 1.68. The greatly reduction of failed students in experiment group was noticeable. The percentages of failed students of control and experiment groups were 17% and 6%. Satisfaction survey evaluation results showed that the students satisfied in high level in every aspect. The comments pointed out that flipped classroom were easy to use and promoted self- study outside classroom. Those qualities would help students develop more skills in lifelong learning and learning to learn.

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