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THERMAL EFFICIENCY ANALYSIS ON THE STEAM POWER PLANT IN NII TANASA BY USING A TWO-SEMESTER DIRECT METHOD WITH A CAPACITY OF 2 x 10 MW Hasanudin, La; Saefuddin, Laode; Lolok, Agustinus; Balaka, Ridway; Adnal, Adnal; Imran, Al Ichlas; Kadir, Kadir; Kadir, Abd; Aminur, Aminur
Jurnal Fokus Elektroda : Energi Listrik, Telekomunikasi, Komputer, Elektronika dan Kendali) Vol 4, No 3 (2019): Jurnal Elektroda Vol 4 No 3
Publisher : Universitas Halu Oleo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33772/jfe.v4i3.10259

The thermal efficiency of a steam power plant is very important to know because it involves the initial input of a steam supply that will turn a turbine. This is done to analyze how much thermal efficiency is used in the generation system, so that it can be seen the continued use of the generation system, which is influenced by the value of the Net Plant Heat rate (NPHR). The purpose of this study is to analyze the thermal efficiency of the steam power plant. The method used is the direct method, using a two-semester system namely: semester one (January-June) and then taking months that represent or tend to be stable data, as well as the second semester (July-December). Analysis results In the case study of a steam power plant in Nii Tanasa, the average thermal efficiency value was 17.09%, while in the second semester the analysis of thermal efficiency values was obtained an average value of 15.54%. This value still tends to be low at a capacity of 100 MW, so it is necessary to evaluate the value of the Net plant heat rate (NPHR), especially the type of fuel used, because the calculation on thermal efficiency is strongly influenced by that value.Â Key words: NPHR, Efficiency, Semester, steam, thermal

Analisis Temperatur Terhadap Perpindahan Panas pada Sistem Pendingin Lazahimu, Erlina; Safiuddin, La Ode; Hasanudin, La
Jurnal Penelitian Pendidikan Fisika Vol 5, No 4 (2020): Jurnal Penelitian Pendidikan Fisika
Publisher : Jurusan Pendidikan Fisika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36709/jipfi.v5i4.14095

This study aims to: (1) determine the heat transfer process of the room area; (2) to determine the effect of sensible heat load on the performance of air conditioner / AC. This study used an experimental method to obtain data on the temperature of the external coolant load, the load on the inner cooler, the area of the room and the surface area data for each cooling load. The results of this study indicate that: the heat load greatly affects the performance of the air conditioner (AC) in producing a comfortable temperature in the room, such as in the meeting room of the BNN Province of SULTRA using 2 PK AC capacity with a total cooling load of 34,979 Btu / hr or 8,744.75 kcal, so that you have to add an AC unit with a minimum capacity of 2 PK to obtain the calorific value that can be moved by the AC (Q1) is greater than the heat load generated by the room (Q2), which is 36,000 Btu / hr> 34,979 Btu / hr or 9,000 kcal> 8,744.75 kcal so that comfortable conditions will be obtained.

THERMAL EFFICIENCY ANALYSIS ON THE STEAM POWER PLANT IN NII TANASA BY USING A TWO-SEMESTER DIRECT METHOD WITH A CAPACITY OF 2 x 10 MW Hasanudin, La; Saefuddin, Laode; Lolok, Agustinus; Balaka, Ridway; Adnal, Adnal; Imran, Al Ichlas; Kadir, Kadir; Kadir, Abd; Aminur, Aminur
Jurnal Fokus Elektroda : Energi Listrik, Telekomunikasi, Komputer, Elektronika dan Kendali) Vol 4, No 3 (2019): Jurnal Elektroda Vol 4 No 3
Publisher : Universitas Halu Oleo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33772/jfe.v4i3.10259

The thermal efficiency of a steam power plant is very important to know because it involves the initial input of a steam supply that will turn a turbine. This is done to analyze how much thermal efficiency is used in the generation system, so that it can be seen the continued use of the generation system, which is influenced by the value of the Net Plant Heat rate (NPHR). The purpose of this study is to analyze the thermal efficiency of the steam power plant. The method used is the direct method, using a two-semester system namely: semester one (January-June) and then taking months that represent or tend to be stable data, as well as the second semester (July-December). Analysis results In the case study of a steam power plant in Nii Tanasa, the average thermal efficiency value was 17.09%, while in the second semester the analysis of thermal efficiency values was obtained an average value of 15.54%. This value still tends to be low at a capacity of 100 MW, so it is necessary to evaluate the value of the Net plant heat rate (NPHR), especially the type of fuel used, because the calculation on thermal efficiency is strongly influenced by that value.Â Key words: NPHR, Efficiency, Semester, steam, thermal

Bimbingan Teknis Pengoperasian Alat Cetak Batako Menggunakan Sistem Pneumatik pada Kelompok Masyarakat Pencetak Batako Sudia, Budiman; Samhuddin, Samhuddin; Hasanudin, La; Aksar, Prinob
Jurnal Pengabdian Masyarakat Ilmu Terapan (JPMIT) Vol 2, No 1 (2020)
Publisher : Vokasi Universitas Halu Oleo

Tujuan Pengabdian Kemitraan Masyarakat Internal UHO ini melakukan bimbingan teknis secara efektif tentang pengoperasian alat pencetak batako dan mentransferkan pengetahuan tentang tata cara pembuatan alat pencetak batako menggunakan sistem pneumatik kepada para kelompok masyarakat pencetak batako yang terdapat di Desa Puasana Kecamatan Moramo Utara Kabupaten Konawe Selatan, metode yang digunakan sosialisasi lansung dan bimbingan secara teknis pengoperasian alat pencetak batako dengan sistem pneumatik. Hasil yang didapatkan oleh para kelompok masyarakat pencetak batako ialah pemahaman tentang dasar-dasar perancangan alat pencetak batako dan kemampuan dalam mengoperasikan alat pencetak batako dengan sistem pneumatik.

Pendampingan Pembuatan Wastafel Portable Pedal Kaki Bagi Bengkel Las Sebagai Upaya Memutus Penyebaran Covid-19 Sudia, Budiman; Aminur, Aminur; Balaka, Ridway; Samhuddin, Samhuddin; Hasanudin, La; Kadir, Abd.
Jurnal Pengabdian Masyarakat Ilmu Terapan (JPMIT) Vol 3, No 1 (2021)
Publisher : Vokasi Universitas Halu Oleo

Pandemik Covid-19 masih terus berlangsung sejak pertama kali terdeteksi di Wuhan, China, akhirDesember 2019. Pola penyebarannya kian meningkat dan tidak mengenal umur serta iklim sehinggaberbagai negara memberlakukan aturan protokoler kesehatan yang ketat Social Distancing, PhysicalDistancing, anjuran memakai masker dan tak kala pentingnya sesering mungkin mencuci tangan.Kegiatan pengabdian pendampingan pembuatan wastafel portable merupakan wujud kolaborasiantara bengkel las dan akademisi Teknik Mesin Universitas Halu Oleo Kendari. Metode pengabdianmemberikan pendampingan pembuatan wastafel bagi tukang las dalam rangka memutus penyebaranCovid-19 yang telah memasuki Era New Normal di Wilayah Kendari. Hasil pengabdian terlaksanadengan baik dalam suasana pandemik Covid-19 dengan tetap memperhatikan protokol kesehatan,pihak mitra Bengkel Las Mekar Surya dan Bengkel Las Fajar sangat antuasias mengikuti programpendampigan. Program pendampingan ini juga melibatkan mahasiswa yang memiliki kompentensilas, sehingga melalui pengabdian dapat terjalin saling tukar informasi dan pengalaman kerja sebagaisolusi meningkatkan kreativitas dan inovasi bagi bengkel las dimasa pandemik Covid-19 di KotaKendari.

Penyediaan Pakan Ternak Melalui Intervensi Teknologi Alat Pencacah Limbah Cangkang Kepiting Di Desa Puasana Kecamatan Moramo Utara Kabupaten Konawe Selatan Aksar, Prinob; Hasanudin, La; Samhuddin, Samhuddin; Mangalla, Lukas Kano; Barata, La ode Ahmad; Sudia, Budiman; Saputra, Jaka seru Dwi
Jurnal Pengabdian Masyarakat Ilmu Terapan (JPMIT) Vol 5, No 2 (2023)
Publisher : Vokasi Universitas Halu Oleo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33772/jpmit.v5i2.45389

The aim of the community service activity is to effectively provide technical guidance to the community, especially the farmers in Puasana Village, North Moramo Sub-district, on the creation, operation, and maintenance of the Crab Shell Waste Chopper Technology. Additionally, it aims to transfer knowledge about the procedures for manufacturing, operating, and maintaining the Crab Shell Waste Chopper Technology in Puasana Village, North Moramo Sub-district, Konawe Selatan Regency. The method employed involves field visits, technical guidance, and the evaluation of activities conducted for the community. The results of the community service activity show that the community is well-informed and understands effectively the mechanisms for manufacturing, operating, and maintaining the crab shell waste chopper device used for livestock feed production. Furthermore, the evaluation provides a comprehensive understanding of the impact and sustainability of the crab shell waste chopper technology program in Puasana Village. These results can be used to enhance the program, ensure the continuity of innovation, and provide lessons for other areas interested in adopting a similar approach.

Rancang Bangun Pompa Torak Dengan Sistem Penggerak Kincir Air Untuk Pengairan Lahan Pertanian Hendra, Hendra; Sisworo, Raden Sisworo; Hasanudin, La
Enthalpy : Jurnal Ilmiah Mahasiswa Teknik Mesin Vol 8, No 1 (2023): Enthalpy: Jurnal Ilmiah Mahasiswa Teknik Mesin
Publisher : Teknik Mesin Universitas Halu Oleo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55679/enthalpy.v8i1.29814

Indonesia has large water sources, but cannot be fully utilized, for example in the agricultural sector because of the difference in land height and water sources, in connection with that we need pumps that can be used to supply water to the land. The purpose of this research is to design, manufacture pumps, determine the materials used and their strengths, and determine the power generated. Research methods include the design and manufacture of pumps as well as material selection and strength calculations. The results showed that the material for the piston was galvanized pipe with a tensile stress of 330 N/mm2, 3mm thick, the piston rod was a bolt with a tensile stress of 60 N/mm2, the cylinder used PVC pipe with a tensile stress of 21.933 N/mm2, 4.5 mm thick. , the connecting rod and shaft are made of standard assental iron with a tensile stress of 568.7 N/mm2, the sprocket uses a standard spretpat motor with a tensile stress of 509.94 N/mm2, and the chain uses a motor chain, length 1035.5 mm, tensile stress 608.01 N/mm2 and the power generated is 46.96 watts.Kata kunci: alternative, design, pump, reciprocating pump

PEMBUATAN MATERIAL KOMPOSIT RESIN POLIESTER YANG DIPADUKAN LIMBAH KERTAS DAN ABU SEKAM PADI SEBAGAI PEREDAM AKUSTIK Isran, Isran; Kadir, Abd; Hasanudin, La
Enthalpy : Jurnal Ilmiah Mahasiswa Teknik Mesin Vol 3, No 2 (2018): Enthalpy: Jurnal Ilmiah Mahasiswa Teknik Mesin
Publisher : Teknik Mesin Universitas Halu Oleo

Noise pollution from noise is a kind of unwanted pollution.This noise can be reduced by using an acoustic damper. This study aims to find out the technique of making polyester resin material mixed with waste paperand rice husk ash as an acoustic damper. The composite made then tested the value of sound absorption coefficient (????), composite damping test is done on kundst tube impedance tool equipped with spekerr device, amplifer, power supllay, lettop, smartphone, oscilloscope, sound lever meter with input frequency 400,600,800 Hz. The composite making method used by determining the volume fraction in composite damping test of Noise Absorption Coefficient (NAC) properties comprising Resin polyster : 50% paper waste : 20% and rice husk ash: 30%, Resin polyster 50% paper waste: 30% and rice husk ash: 20%, Resin polyster : 50% paper waste: 40% and rice husk ash : 10%. The result of all polyester resin composite test specimens in paper waste and rice husk ash reinfercement have the highest absorption coefficient 0,47857????????) at fractoin of 50%:30%:20% volume with frequency of 800 Hz. While for the lowest sound absorption result 0,475819 (????) with volume fraction of 50%:30%:20% with frequency 400 Hz. The overall specimencan be made as a damper because it has a sound absorption coefficient value >0.3.Keyword: Composite, paper waste, rice husk ash and NAC

Desain dan Analisa Pembakaran Kompor Briket Biomassa Ramadhan, Ramadhan; Kadir, Kadir; Hasanudin, La
Enthalpy : Jurnal Ilmiah Mahasiswa Teknik Mesin Vol 5, No 1 (2020): Enthalpy: Jurnal Ilmiah Mahasiswa Teknik Mesin
Publisher : Teknik Mesin Universitas Halu Oleo

The furnace is a device used to convert potential energy into heat energy. Furnace for the community is one of the important tools for cooking. Combustion is the reaction of a substance with oxygen (O2 ). Combustion is one of the most widely used biomass energy conversions because it produces direct thermal energy. The purpose of this research is to analyze the number of holes and analyze the comparison of burning briquette stoves with kerosene stoves. The data collection method is carried out by direct observation of the community and collecting references from related books and journals. Analysis conducted on the number of holes in the briquette stove (21, 33 and 43) shows the most effective results in the use of briquette stoves are briquette stoves which have 43 holes. The time to heat the water is 15 minutes with the same amount of water and fuel volume, the water volume is 500 ml and 600 grams of fuel and the final temperature is 100 oC. The heating time of kerosene stove is 12 minutes and the heating time of briquette stove is 15 minutes.Keywords: Briquette stove, hole variation, design, combustion, efficiency

Analisa Kekuatan Mekanik Sambungan Las Menggunakan Pola Ayunan Melingkar Dan Zig-Zag Pada Baja Karbon Sedang Irwan, Irwan; Endriatno, Nanang; Hasanudin, La
Enthalpy : Jurnal Ilmiah Mahasiswa Teknik Mesin Vol 7, No 4 (2022): Enthalpy: Jurnal Ilmiah Mahasiswa Teknik Mesin
Publisher : Teknik Mesin Universitas Halu Oleo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55679/enthalpy.v7i4.28405

Welding is one of the metal joining techniques by melting some of the parent metal and filler metal which is currently widely used with different methods and movements of welding electrodes. These methods aim to obtain flat and smooth welds and at the same time become the impetus for the compilers to conduct research entitled "analysis of the mechanical strength of welded joints using circular and zig-zag swing patterns on medium carbon steel" with the aim of knowing the effect of welding patterns on hardness test on medium carbon steel material and the effect of microstructure welding pattern on medium carbon steel material. This research was conducted in August 2020, at the Mechanical Engineering Materials and Technology Laboratory, Department of Mechanical Engineering, Faculty of Engineering, Halu Oleo University Kendari. The tools used are welding machines, grinding machines, welding goggles, pliers, masks and gloves while the materials are 0.5 cm carbon steel plate, welding electrodes, grinding wheels. The results of the first research are that for welding using a circular electrode movement pattern which shows a softer or more ductile result, while for a harder or brittle result, it is shown in the zigzag electrode movement welding process and secondly that the circular electrode movement in the welding process has an impact on the microstructure. in the HAZ area which is getting darker because the structure formed is dominated by pearlite, while in welding the zigzag electrode movement has an impact on the HAZ area which is getting brighter because it is dominated by the bainite structureKeywords: Circular Welding Pattern, Mechanical Strength, Medium Carbon Steel, Zigzag Welding Pattern,

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