Implementasi Mesin Press Sampah Plastik Untuk Meningkatkan Kesejahteraan Masyarakat di BUMDES Mitra Sejati, Kecamatan Gandusari Kabupaten Trenggalek

Dalam Implementasi Mesin Press Sampah Plastik Untuk Meningkatkan Kesejahteraan Masyarakat di BUMDES Mitra Sejati, Kecamatan Gandusari Kabupaten Trenggalek kali ini ditingkatkan pengelolaan limbah sampah plastik yang meliputi pelatihan kewirausahaan sampah plastik, pelatihan macam - macam sampah plastik, pelatihan permodalan dan keuangan, pelatihan taktik menjual dan pemasaran, dan juga pelatihan penggunaan mesin press bagi masyarakat di BUMDES Mitra Sejati, Kecamatan Gandusari Kabupaten Trenggalek untuk meningkatkan kesejahteraan mereka. Permasalahannnya adalah banyak sampah yang mengotori dan tidak dikelola dengan baik dan masyarakat Kecamatan Gandusari belum mengetahui bagaimana cara mengolah sampah dan mengubahnya menjadi produk kreatif yang memiliki nilai jual. Solusi dalam menyelesaikan masalah plastik ini adalah dengan adanya metode pengolahan limbah plastik menjadi produk plastik yang dapat diolah menjadi aneka produk kreatif yang memiliki nilai jual, selain itu sampah yang sudah dipress ergonomis (nyaman, aman, dan cepat) bagi penggunanya dan efektif bagi produknya. Luaran yang dihasilkan: 1. Publikasi pada jurnal pengabdian masyarakat, 2. Mesin press sampah plasti

ANALISIS ENERGI DAN EKSERGI PADA SISTEM HTR-10 SIKLUS TURBIN UAP

ABSTRAK ANALISIS ENERGI DAN EKSERGI PADA SISTEM HTGR SIKLUS TURBIN UAP. Reaktor tipe HTGR merupakan reaktor yang rencana akan dibangun sebagai Reaktor Daya Eksperimental (RDE) pertama di Indonesia. Reaktor HTGR merupakan reaktor dengan suhu pendingin keluar reaktor tinggi (686°C ~ 950°C),  efisiensi termal tinggi serta mempunyai sistem keselamatan pasif dan melekat. Untuk mengetahui ketepatan efisiensi suatu pembangkit  dipandang tidak cukup jika hanya mengacu pada efisiensi energi saja seperti yang didasarkan pada Hukum I Termodinamika, namun perlu dikombinasikan dengan pendekatan eksergi yang berdasarkan Hukum II Termodinamika. Karena itu, tujuan studi adalah melakukan analisis energi dan eksergi pada sistem HTGR siklus turbin uap untuk mengetahui kerugian/ kehilangan panas yang terjadi dalam komponen sistem pembangkit, sehingga dapat diketahui potensi-potensi kerugian dan dapat dilakukan perbaikan. Metodologi yang digunakan adalah perhitungan menggunakan program cycle tempo dengan input data dari reaktor HTR-10. Hasil studi analisis dan evaluasi terhadap ireversibilitas sistem reaktor HTGR menggunakan siklus turbin uap menunjukkan bahwa reaktor merupakan komponen yang paling tidak efisien diantara seluruh komponen yang ada dalam sistem. Hal ini disebabkan ireversibilitas yang terjadi dalam transfer energi hasil reaksi pembelahan ke pendingin helium. Pembangkit uap, turbin, kondensor, adalah komponen penyumbang kerugian terbesar berikutnya.  Hasil studi juga menunjukkan bahwa efisiensi sistem HTGR siklus turbin uap mempunyai potensi besar untuk dilakukan perbaikan sehingga mampu memberikan efek yang signifikan terhadap perbaikan efisiensi sistem. Kata kunci: energi, eksergi, HTGR, analisis, turbin uap   ABSTRACT ENERGY AND EXERGY ANALYSIS ON THE STEAM TURBINE CYCLE OF HTGR SYSTEM. HTGR type reactor is planned to be built reactors as the first Experimental Power Reactor (RDE) in Indonesia. HTGR tipe reactor is a reactor with a high reactor outlet temperature (~ 900 ° C), high thermal efficiency and also it have inherent and passive safety systems. To determine the accuracy of the efficiency of a power plant is not enough if it merely refers to the energy efficiency just as it is based on the first law of thermodynamics, but it needs to be combined with exergy approach that is based on the second law of thermodynamics. Therefore, the purpose of the study is to analyze the energy and exergy of HTGR-steam turbine cycle system to determine the loss / heat loss that occurs in the power system components, so it can be seen the potential loss and can be repaired. The methodology used is a calculation using the program cycle due to the data input of the HTR-10 reactor. The results of analysis and evaluation of the irreversibility of HTGR reactor system using a steam turbine cycle shows that the reactor is a component of the least efficient among all components in the system. This is due to the irreversibility of energy transfer that occurs in the cleavage reaction proceeds to the helium coolant. Steam generators, turbines, condensers, is a component of the next largest contributor kerugia. The study shows that the efficiency of the steam turbine cycle HTGR system has great potential to be improved  so it can provide a significant effect on the improvement of the efficiency of the system. Keywords: energy, exergy, HTGR, analysis, steam turbin

Optimizing Coupling Region as Sensing Area in Optical Ring Resonator Sensor Applications

Optical Ring Resonators (ORR), whether based on fiber optics or an optical micro ring on substrate structures have been studied and explored extensively to be used for optical sensor applications. The outstanding advantage of optical ring resonator structure is its spectral response shape change due to the variations of the refractive index of the surrounding medium, medium loss due to absorption and scattering, and coupling loss between waveguides in the optical ring structure. The change of spectral response due to the variations of optical medium on the optical ring structure is a phenomenon that can be used to sense the optical property change of physical or biological materials. Some developments of Waveguide (WG) ORR sensors are in progress mostly for bio-sensor applications, since it is free from Electromagnetic Interference (EMI) and is non-physically destructive. In this paper, we discuss our research in developing optical bio-sensor in the form of a WG optical ring resonator. The focus of the research is optimizing the coupling region as sensing area to obtain the optimal coupling coefficient for the most sensitive sense. The results show that the variations of coupling coefficient is not linear with respect to the resonant peak output, such that we are able to locate the most sensitive coupling coefficient to sense

Analysis of Hole Lifetime in SOI MOSFET Single-Photon Detector

Hole lifetime in the silicon-on-insulator (SOI) metal-oxide-semiconductor field-effect transistor (MOSFET) singlephoton detector was evaluated by the analysis of drain current histograms for different light intensities and substrate voltages. It was found that the peaks in the histogram corresponding to the larger number of stored holes grew as the gate bias decreased. This was attributed not to the increased light absorption efficiency or collection efficiency of the photo-generated holes, but to the prolonged hole lifetime presumably caused by the higher transverse electric field inside the body of SOI MOSFET

Analysis of Hole Lifetime in SOI MOSFET Single-Photon Detector

Hole lifetime in the silicon-on-insulator (SOI) metal-oxide-semiconductor field-effect transistor (MOSFET) singlephoton detector was evaluated by the analysis of drain current histograms for different light intensities and substrate voltages. It was found that the peaks in the histogram corresponding to the larger number of stored holes grew as the gate bias decreased. This was attributed not to the increased light absorption efficiency or collection efficiency of the photo-generated holes, but to the prolonged hole lifetime presumably caused by the higher transverse electric field inside the body of SOI MOSFET.Keywords: hole lifetime SOI MOSFET, light absorption efficiency, single-photon detecto

Determination of eco-efficiency level of solid waste management of polypropylene cloth on motorcycle tire industry in Cileungsi (West Java)

Sustainability is now accepted by all stakeholders as a guiding principle for both public policy making and corporate strategies. However, the biggest challenges are still in the real and substantial implementation of the sustainability concept. The Motorcycle Tire Manufacturing Industry produces a by-product in the form of solid waste Polypropylene Fabric which is produced from one of its production processes, namely the Calendering process. Therefore, efforts need to be made to manage the waste resulting from the production process to become something more valuable so that a better level of eco-efficiency can be obtained. The purpose of this study is to determine the level of eco-efficiency of Polypropylene Fabric solid waste treatment produced from the calendering process and provide recommendations in an effort to improve the value of eco-efficiency. The quantitative method is used to calculate the efficiency of polypropylene fabric solid waste management that can still be taken from the waste. Based on the results of laboratory calculations and checks it was found that there was an eco-efficiency value of 30% for the reuse of waste polypropylene cloth and there were economic benefits of Rp. 355,877,264 in 2018 (based on forecasting the addition of waste in the future)

Determination of eco-efficiency level of solid waste management of polypropylene cloth on motorcycle tire industry in Cileungsi (West Java)

Sustainability is now accepted by all stakeholders as a guiding principle for both public policy making and corporate strategies. However, the biggest challenges are still in the real and substantial implementation of the sustainability concept. The Motorcycle Tire Manufacturing Industry produces a by-product in the form of solid waste Polypropylene Fabric which is produced from one of its production processes, namely the Calendering process. Therefore, efforts need to be made to manage the waste resulting from the production process to become something more valuable so that a better level of eco-efficiency can be obtained. The purpose of this study is to determine the level of eco-efficiency of Polypropylene Fabric solid waste treatment produced from the calendering process and provide recommendations in an effort to improve the value of eco-efficiency. The quantitative method is used to calculate the efficiency of polypropylene fabric solid waste management that can still be taken from the waste. Based on the results of laboratory calculations and checks it was found that there was an eco-efficiency value of 30% for the reuse of waste polypropylene cloth and there were economic benefits of Rp. 355,877,264 in 2018 (based on forecasting the addition of waste in the future)