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4th International Conference on Science and technology, ICST 2018

作者： Hanifah, Umi Andrianto, Moeso Development Center of Appropriate Technology Indonesian Institute of Sciences Subang Indonesia

ISBN: (纸本)9781538658130

This paper presents a comparison of fuel consumption and energy efficiency at soymilk cooking between using a gas stove and using a mini boiler. The experiment had been done at tofu production line at Subang. We used a tofu cooking stove that can be operated using a gas burner or using steam from a boiler. There were three experiments i.e. cook using a gas stove (A), cook using a gas boiler (B), cook using a wood pellet boiler (C). The highest of specific fuel consumption was based on cooking using a wood pellet mini boiler (0.157 kg fuel/kg tofu production) and the lowest one was cook using a gas boiler (0.047 kg fuel/kg tofu production). The highest of specific energy consumption of the soymilk cooking was cooking using a gas stove (3792 kJ/kg tofu production) and the lowest one was cook using a gas boiler (2076 kJ/kg tofu production). Soymilk cooking using a mini boiler could save the fuel cost and the cooking time compared with soymilk cooking using a gas stove, cooking using a wood pellet mini boiler was the cheapest and fastest one. The highest of energy efficiency was cooking using a gas boiler (59.24%) and the lowest one was cook using a gas stove (33.66%). © 2018 IEEE.

关键词： Energy efficiency

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Performance prediction of adsorption self-cooling mobile container 6

Performance prediction of adsorption self-cooling mobile con...

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6th International Conference on Sustainable Energy Engineering and Application, ICSEEA 2018

作者： Taufan, Andi Enrico Panggabean, Benny Leonard Development Center for Appropriate Technology Indonesian Institute of Sciences Subang Indonesia Computer Science University of Hasanuddin Makassar Indonesia

ISBN: (纸本)9781538666838

Solar thermal cooling technology utilization such as adsorption cooling system has attracted researchers as an alternative to conventional vapor compression system. The adsorption cooling system can utilize low-grade heat as its power source. This paper presents a numerical simulation of a new conceptual design of adsorption self-cooling mobile container to predict its adsorption performance. The container was mathematically modeled to calculate and simulate cooling power, COP, SCP, and the lowest temperature that could be obtained. The design consists of four main components namely the adsorption chamber, valve system, refrigerant chamber, and cabin chamber. Comparison between silica gel-water and zeolite-water had been investigated. The results show that evaporator temperature profile of the system with zeolite-water is better than the other working pair. Minimum value of the evaporator temperature is 18.14°C with zeolite-water as the working pair. The average cooling power, COP, and SCP during adsorption process are 1.48 J, 0.014, 0.984 W/kg, respectively. © 2018 IEEE.

关键词： Zeolites

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Coffee-based appropriate technology implementation for community empowerment: Lesson learnt from rural community in Sumba Barat Daya 8

Coffee-based appropriate technology implementation for commu...

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8th International Symposium for Sustainable Humanosphere, ISSH 2018

作者： Wijayanti, F. Carolina Karim, M.A. Sudaryanto, A. Center of Appropriate Technology Development Indonesian Institute of Sciences Jl. K.S Tubun No 5 Subang West-Java41213 Indonesia

Implementation of appropriate technology is recognized as one of the significant approaches for community empowerment. The principle of localities embedded in defined appropriateness of technology as "people mattered" has always been challenged when it is applied. This paper discussed the findings from an action-research work in the traditional coffee community in Sumba Barat Daya - East Nusa Tenggara. Coffee cultivation, post-harvest handling, processing to ground coffee, are tradition practiced to fulfill their need. The tradition is in the contest when there is a demand from the modern market requiring an increase of quality and productivity. The result of this study showed that to empower community it requires integration of technology appropriateness which is economically profitable and socially acceptable, and to ensure sustainability, maintenance of induced knowledge and practices should be strengthened by local institutional establishment based on social capital. © 2019 IOP Publishing Ltd. All rights reserved.

关键词： Sustainable development

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Model of Mechanization Implementation on the Handling of Oil Palm Fronds (OPF) Waste into Compost and Mulch in Aceh Province, Indonesia 2

Model of Mechanization Implementation on the Handling of Oil...

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2nd International Conference on Agriculture, Environment and Food Security, AEFS 2018

作者： Bulan, R. Raju Safrizal Yasar, M. Sitorus, A. Department of Agricultural Engineering Syiah Kuala University Indonesia Department of Agricultural Engineering Universitas Sumatera Utara Indonesia Development Center for Appropriate Technology Indonesian Institute of Science LIPI Indonesia

The application of mechanization for waste handling in oil palm plantations should be done due to abundant waste of oil palm fronds (OPF). This study aims to examine the feasibility of applying mechanization in the handling of oil palm fronds with a dynamic model approach in the province of Aceh, Indonesia. The mechanization implementation model is designed with the placement scenario of its centralized and decentralized processing equipment. The results show that the mechanization system approach can be implemented in handle oil palm fronds waste. The management of the equipment with the current centralization shows the best scenario model. The results are expected to be a reference for oil palm planters to be able to apply their waste treatment with a mechanized approach of centralization. © Published under licence by IOP Publishing Ltd.

关键词： Composting

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Experimental Study on Fuel Consumption and Energy Efficiency at Soymilk Cooking Using a Mini Boiler and Using a Gas Stove

Experimental Study on Fuel Consumption and Energy Efficiency...

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International Conference on Science and technology-Computer (ICST)

作者： Umi Hanifah Moeso Andrianto Development Center of Appropriate Technology Indonesian Institute of Sciences Subang Indonesia

关键词： Boilers Fuels Energy efficiency Energy consumption Dairy products Biomass

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Relayouting Cocoa Processing Unit of Banua Chocolate Using CRAFT Algorithm (Case Study: Cocoa Processing Unit of Banua Chocolate, Poso, Central Sulawesi)

Relayouting Cocoa Processing Unit of Banua Chocolate Using C...

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Computer Modeling and Simulation, EMS, UKSIM European Symposium on FLAGGED

作者： Risnandar Risnandar Agus Triyono Indonesian Institute of Sciences Center for Appropriate Technology Development Subang Indonesia

Regulation of the production facility aims to regulate the work area and most economical to operate the production process, improve the work ethic, and performance of the operator. The growing demand for refined cocoa products from Cocoa Processing Unit of Banua Chocolate to issue a policy relay outing production of cocoa processing facility in the Poso in an effort to meet consumer demand. Raw flow problems that are still back, so that resulting in the production process is interrupted or stopped. To improve the production process required an analysis of the layout of the facility by the method of Computerized Relative Allocation of Facilities Techniques (CRAFT). This method can redeem at the location of the initial layout by analyzing the flow of material. CRAFT algorithm will be able to set a specific location and time processing a brief computerized to meet the needs of demand and production capacity.

关键词： Layout Materials Production Materials handling Computers Frequency measurement Euclidean distance

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The important role of coffee agroecosystem for rural development 8

The important role of coffee agroecosystem for rural develop...

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8th International Symposium for Sustainable Humanosphere, ISSH 2018

作者： Carolina Wijayanti, F. Veronica, V. Biri, A.L. Center of Appropriate Technology Development Indonesian Institute of Sciences Jl. K.S Tubun No 5 Subang West-Java41213 Indonesia Regional Planning Research and Development Agency of Sumba Barat Daya Regency Indonesia

Rural development based on local resources utilization has been promoted as a strategy to achieve people prosperity in Indonesia. Although many studies have found that resource-based strategy is no longer relevant nowadays, for many areas this is still considered an appropriate approach. In order to examine the significance, we conducted a study in Sumba Barat Daya District of East Nusa Tenggara, focussing on coffee as one of the most abundant products in the region. Utilizing a socio-ecological approach, we collected data and information to depict the dynamics of coffee-based activities. A detailed study in Kadi Roma Village of Sumba Barat Daya on coffee ecosystem contribution to local community revealed that despite traditionally managed, coffee plays a significant role socially and economically. As a source of income to almost 17,000 smallholder farmers in Sumba Barat Daya, it can be concluded that coffee can become a gateway to attain successful rural development program. It also provides various opportunities for the community to participate which requires supportive innovation ecosystem to be established systematically by relevant local institutions, including include local government. © 2019 IOP Publishing Ltd. All rights reserved.

关键词： Regional planning

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Isolation of Thermophilic Microbes Resistant to Ethanol from Ciater Hot Springs, Subang-West Java

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Procedia Chemistry 2015年 16卷 548-554页

作者： Lia Ratnawati Takiyah Salim Wawan Agustina Sriharti Center for Appropriate Technology Development Indonesian Institute for Sciences (Pusbang TTG-LIPI) Jl.K.S. Tubun No. 5 Subang 41213 Indonesia

A study has been conducted to isolate thermophilic microbes from Ciater hot springs. The aim of this research is to select thermophilic microbes that resistant to ethanol. The methods of this research were: i. sampling, ii. enrichment, isolation and screening, iii. identification, and iv. determination of minimum inhibition concentration of ethanol. Enrichment, isolation and screening of thermophilic microbes done by using Luria Broth (LB) medium contained 4% of ethanol. Identification of isolates until genus level was done by comparing the results with those of other studies. Determination of Minimum Inhibitory Concentration (MIC) of ethanol was done by growing the isolates in the medium with different concentrations of ethanol (0%, 1%, 2%, 3%, 4%, 5%, 6%, 7% and 8%) and incubated at 50 o C, for 24 h. The result of this study was obtained 6 thermophilic isolates which able to grow on a medium containing 4% ethanol (C1, C2, C3, C4, C5 and C6). From the results of MIC known that generally all isolates able to grow well until the ethanol content of 6%, except for C6 isolate which only grow maximum in 5% ethanol content. It was suspected that the bacteria isolated is a genus Thermoanaerobacter.

关键词： thermophilic microorganism bioethanol hot-springs

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Bioethanol Production from Glucose by Thermophilic Microbes from Ciater Hot Springs

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Procedia Chemistry 2015年 16卷 503-510页

作者： Takiyah Salim Lia Ratnawati Wawan Agustina Sriharti Center for Appropriate Technology Development Indonesian Institute for Sciences (Pusbang TTG-LIPI) Jl.K.S. Tubun No. 5 Subang 41213 Indonesia

Bioethanol has been considered as one of the alternative energy resources for fossil fuel substitute. Second generation of bioethanol production usually uses lignocellulosic material as its raw material which conducted at high temperature range (70-80 o C). In this case the thermophilic microbe is needed for fermentation process in order to minimize the use of energy. This paper will discuss the results of the study on bioethanol production from glucose by using thermophilic microbes isolated from local source namely from Ciater hot springs in Subang District, Indonesia. In this study six thermophilic isolates (C1, C2, C3, C4, C5 and C6) were tested their capability in producing ethanol in the fermentation medium containing 5% glucose substrate for 5 days incubation. To determine the activity of isolates in ferment substrate is done by measuring the concentration of glucose and ethanol produced using a spectrophotometer. Isolates tested (C1,C2,C3,C4 and C5) could reduce glucose concentration from 1.1up to 1.7% in the fermentation medium. The ethanol produced was tested qualitatively by reacting the samples with K 2 Cr 2 O 7 inacidic conditions by observing its color change from yellow-orange to green-blue. The presence of ethanol indicatedby the decrease of OD's sample. This study showed that all isolates have the ability to produce ethanol. However, there are 2 isolates potentially produce ethanol that isolates C3 and C5 are characterized by low absorbance after adding potassium dichromate (K 2 Cr 2 O 7 ).

关键词： thermophilic microbes bioethanol hot springs

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development Computer Software for Optimum Scheduling of Farm Machinery Operations in a Sugarcane Plantation

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IFAC Proceedings Volumes 2001年第11期34卷 217-220页

作者： I Wayan Astika Rudi Cahyoutomo F.X. Lilik Mulyantara Department of Agricultural Engineering Bogor Agricultural University. Po Box 220 Bogor Indonesia Center for Development of Appropriate Engineering and Technology Serpong. Indonesia

An algorithm for scheduling of the operation of tractors and implements in a sugar cane plantations was developed. The core of the algorithm was an optimization using random search. The schedule was expressed by the combinations of day-shift-tractor-implement-operator-job-field-covering area. To run the algorithm and facilitate data inputting and outputs printing, a prototipe of software named Walsien 1.0 was developed with Visual Basic 4.0 TM

关键词： Algorithms Computer software Constraints Heuristics Optimization problem Random searches Scheduling algorithm

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