Semisolid Materials Processing: A Sustainability Perspective

2022 ◽  
Vol 327 ◽  
pp. 287-292
Author(s):  
Anders E.W. Jarfors ◽  
An Dong Di ◽  
Ge Gang Yu ◽  
Jin Chuan Zheng ◽  
Kai Kun Wang ◽  
...  
Keyword(s):  
Carbon Footprint ◽  
Cost Efficiency ◽  
Metal Casting ◽  
Materials Processing ◽  
Time Cost ◽  
Gating System ◽  
Energy Usage ◽  
Process Yield ◽  
Secondary Material ◽  
Use Efficiency

Sustainable development is increasing in importance with restrictions on emission and carbon footprint. Similarly, both energy and resources efficiency are required, and at the same time, cost-efficiency is required. The current paper is focusing on carbon footprint, energy usage and material use efficiency of semisolid metal casting. A detailed analysis is made on the RheoMetal process, which is benchmarked to conventional HPDC casting. The analysis includes the gating system and the importance of the use of primary or secondary material. It furthermore includes a discussion of process yield and benefits based on process capability.

No-till and mulching enhance energy use efficiency and reduce carbon footprint of a direct-seeded upland rice production system

2020 ◽  
Vol 271 ◽  
pp. 122700 ◽  
Author(s):  
Gulab Singh Yadav ◽  
Subhash Babu ◽  
Anup Das ◽  
K.P. Mohapatra ◽  
Raghavendra Singh ◽  
...  
Keyword(s):  
Carbon Footprint ◽  
Production System ◽  
Energy Use ◽  
Upland Rice ◽  
Rice Production ◽  
Energy Use Efficiency ◽  
No Till ◽  
Direct Seeded ◽  
Use Efficiency

scholarly journals Optimasi Biaya dan Waktu Proyek Konstruksi dengan Lembur dan Penambahan Tenaga Kerja

2021 ◽  
Vol 17 (1) ◽  
pp. 35-46
Author(s):  
Dinda Fardila ◽  
Nuur Robbyatul Adawyah
Keyword(s):  
Data Analysis ◽  
Cost Efficiency ◽  
Time Cost ◽  
Optimum Time ◽  
Time Efficiency ◽  
Project Cost ◽  
Trade Off ◽  
The Cost ◽  
Total Project Cost ◽  
Total Project

ABSTRACT                                                                         In the construction of a construction project, there are three main elements: time efficiency, minimal costs, and appropriate quality. This study aims to calculate changes in the cost and time of project implementation with variations in overtime and additional workforce. Data analysis using Microsoft Project 2010 program and Time-Cost Trade-Off method. The results of this study indicate that (1) the optimum time and costs due to overtime are obtained at the project age of 235 working days with a total project cost of IDR 8,438,038,832 with a project time efficiency of 5 days (2.13%) and a project cost efficiency of IDR 3.559,695 (0.042%). (2) The optimum time and cost due to the addition of labor is the best choice with the results obtained at the project age of 226 working days with a total project cost of IDR 8,429,832,759 with a project time efficiency of 14 days (6.19%) and cost-efficiency. project amounting to Rp. 11,779,674 (0.14%). ABSTRAKDalam pelaksanaan pembangunan suatu proyek konstruksi, terdapat tiga unsur utama yaitu waktu yang efisien, biaya minimal dan mutu yang sesuai. Tujuan dari penelitian ini adalah menghitung perubahan biaya dan waktu pelaksanaan proyek dengan variasi lembur dan penambahan tenaga kerja. Analisis data menggunakan program Microsoft Project 2010 dan metode Time Cost Trade Off. Hasil penelitian ini menunjukkan bahwa (1) Waktu dan biaya optimum akibat lembur didapat pada umur proyek 235 hari kerja dengan total biaya proyek sebesar Rp8.438.038.832 dengan efisiensi waktu proyek sebanyak 5 hari (2,13%) dan efisiensi biaya proyek sebesar Rp3.559.695 (0,042%). (2) Waktu dan biaya optimum akibat penambahan tenaga kerja menjadi pilihan terbaik dengan hasil yang didapat pada umur proyek 226 hari kerja dengan total biaya proyek sebesar Rp8.429.832.759 dengan efisiensi waktu proyek sebanyak 14 hari (6,19%) dan efisiensi biaya proyek sebesar Rp11.779.674 (0,14%).

scholarly journals PENERAPAN JUST IN TIME UNTUK EFISENSI BIAYA PERSEDIAAN

2019 ◽  
Vol 8 (3) ◽  
pp. 1755
Author(s):  
El Bethree Jeremya Janson B ◽  
I Nyoman Nurcaya
Keyword(s):  
Cost Efficiency ◽  
Study Data ◽  
Raw Material ◽  
Just In Time ◽  
Time Cost ◽  
Inventory Cost ◽  
Traditional System ◽  
Analysis Techniques ◽  
Efficiency Data ◽  
Pizza Hut

Just In Time is a system designed to get good quality, reduce costs, and achieve time and cost as efficiently as possible by eliminating the waste. This research was conducted at Pizza Hut Delivery Kerobokan, aimed at knowing and analyzing Just In Time implementation in improving inventory cost efficiency. Data collection method is done by observing the object under study. Data analysis techniques used are descriptive quantitative analysis techniques. The results of this study indicate that the traditional purchasing system that was implemented in 2016 is still not effective, because it still uses the traditional system which causes waste. Pizza Hut Delivery companies should implement the Just In Time purchase system, enter into agreements with suppliers regarding the quality, quantity and time of raw material delivery with an agreement with the supplier of the company to minimize storage and ordering costs. Keywords: just in time, cost efficiency, inventory

The carbon footprint of sugar

2010 ◽  
pp. 427-434 ◽  
Author(s):  
Peter W. Rein
Keyword(s):  
Greenhouse Gas Emissions ◽  
Greenhouse Gas ◽  
Carbon Footprint ◽  
Estimation Procedure ◽  
Primary Energy ◽  
Net Energy ◽  
Energy Usage ◽  
Gas Emissions ◽  
Sugarcane Yield ◽  
Set Up

Climate change is rapidly becoming a serious issue and one which will increasingly demand the attention of sugar producers. Estimation of the greenhouse gas emissions in the production of sugar, otherwise known as the carbon footprint, is an essential part of any sustainability study. A method of estimating net energy usage and greenhouse gas emissions has been developed, based initially on work done on biofuels. The calculation routine was developed for use in the Better Sugarcane Initiative standards, which focus on the sustainability of the sugarcane industry. This estimation procedure estimates primary energy requirements including both direct effects, mainly energy usage, and indirect effects, which include energy used in the production of fuels, fertilizers and chemicals. Allowance is also made for the inclusion of direct land use change effects. The estimation procedure allows for the production of molasses and/or ethanol, and for the export of power. Attention is given to the potential errors and problems in arriving at these estimates. The main problems are uncertainties in emissions from fertilizer use and the way in which emissions are allocated to co-products. The results show that the carbon footprint is most affected by sugarcane yield, sugar recovery, fertilizer usage, irrigation, cane burning and power export. A factory set up efficiently for maximum power generation can show a negative carbon footprint and, in this respect, maximum export of electric power can deliver a lower carbon footprint than maximum ethanol production. The calculation routine estimates the greenhouse gas emissions from field to factory gate and can be used for an existing operation or in the design of a new project to assist in making good sustainability choices.

Influence of Casting Process for Technological Yield of Thin Wall Steel Castings by Last Solidifying Feeding Mechanism

2012 ◽  
Vol 538-541 ◽  
pp. 1134-1137
Author(s):  
Da Chun Yang
Keyword(s):  
Mechanical Properties ◽  
Complex Structure ◽  
Casting Process ◽  
Thin Wall ◽  
Gating System ◽  
Pouring Temperature ◽  
Process Yield ◽  
Feeding Mechanism ◽  
Steel Castings

For the steel castings which is thin wall, uniform thickness, complex structure, and no special mechanical properties, it is feasible that the foundry technology was designed according to the last solidifying feeding mechanism. Adopting this process for the thin wall steel castings, the pouring temperature must be controlled and the gating system be designed rationally. Using self-feeding shrinkage in solidification, and the casting was poured and congealing at the same time. The shrinkage of finally congealing part was fed by small riser or gating system (no riser). Using this foundry technology, the casting process yield and surface quality of casting may be improved, the production cost is reduced, and the requirements of mechanical properties can be met.

scholarly journals Greens IOT and its Green enabling Environment

2021 ◽  
pp. 104-118
Author(s):  
Saijshree Srivastava ◽  
Himanshu Kumar Shukla ◽  
Surya Vikram Singh ◽  
Rudrendra Bhadur Singh
Keyword(s):  
Carbon Footprint ◽  
Carbon Emission ◽  
Technology Development ◽  
Research Work ◽  
Environmentally Friendly ◽  
The Internet ◽  
Energy Usage ◽  
Toxic Pollution ◽  
Internet Of Thing ◽  
The Way

Internet of Thing has modified the way we work and live in the era of incredible technology development. There are various advantages of Internet of Thing that enriching our organization, it should be provoked that the Internet of Thing also consumes energy, comprises toxic pollution and E-waste. These places new hassle on the environments and smart sphere. The way of increase the profits and reduce the harm of Internet of Thing, there is an increasing craving to move toward green Internet of Thing. The future of IoT is seen in Green Internet of Thing that is environmentally friendly. To achieve that, it is very much important to put various measures to diminish carbon footprint, conserve fewer resources, and promote proficient techniques for energy usage. The main aim of green Internet of Thing, that moving headed to the machines, communications, sensors, clouds, and internet are alongside energy effectiveness and reducing carbon emission. This paper represents a thorough analysis of the contemporary continuing research work and probable technologies of green Internet of Thing with an objective to provide some clues for future green research.

scholarly journals Growth Performance and Resource Use Efficiency of Maize in Bihar: Economic Perspectives

2017 ◽  
Vol 4 (1) ◽  
Author(s):  
K. M. SINGH ◽  
NASIM AHMAD ◽  
D. K. SINHA ◽  
R> R. MISHRA
Keyword(s):  
Resource Use ◽  
Cost Efficiency ◽  
State Level ◽  
Resource Use Efficiency ◽  
Maize Production ◽  
Production Growth ◽  
Use Efficiency ◽  
Economic Perspectives ◽  
Available Technology ◽  
The Cost

The present investigation was carried out to estimate growth in area, production and productivity and resource use efficiency of maize in Bihar. During the first period (1970-71 to 1914-15, the compound growth rate (CGR) of area for maize was estimated to be negative (-0.023%), whereas it was observed positive for both production (1.367%) and productivity (1.385%) indicating thereby increase in production growth on account of rise in productivity with the introduction of rabi maize. Technical efficiencies at state level in maize production were found to be 64% for kharif maize and 71% in rabi maize, indicating thereby production changes by 36% and 29% in kharif and rabi maize are possible to increase with the available technology. Allocative mean efficiencies for kharif and rabi maize were calculated 68% and 65%, revealing the fact that farmers could reduce costs by 32% and 35% by using optimum proportions of inputs considering it’s prices while selecting it’s quantities. Further the values of cost efficiency (CE) was computed as 0.44 and 0.46 for both kharif and rabi maize, respectively. This emphasizes that this provides ample scope to reduce the cost of production by 56% and 54% in both seasons of maize through efficient use of available resources (at least cost) to achieve the objective for optimization of income.

scholarly journals Energy Use Pattern of Zero Budget Natural Farming in Rice Production in Visakhapatnam District of Andhra Pradesh State

2020 ◽  
pp. 111-115
Author(s):  
S. Shrine ◽  
K. Umadevi
Keyword(s):  
Andhra Pradesh ◽  
Energy Use ◽  
Rice Production ◽  
Net Energy ◽  
Production Operation ◽  
Energy Usage ◽  
Use Efficiency ◽  
Natural Farming ◽  
Use Pattern ◽  
Visakhapatnam District

The study examined the energy use pattern of zero budget natural farming (ZBNF) in rice production. Operation wise energy usage in rice production was calculated in this study. From the results, natural fertilizers and manures were found to be the dominant source of energy and the lowest is seed energy in rice production. The energy use efficiency shows 4.83 MJ per ha output energy utilised per 1 MJ ha-1 input energy. The net energy was found to be 54645.75 MJ per hectare rice production in the study.

scholarly journals Measuring Energy Efficiency of Cloud Datacenters

2019 ◽  
Vol 8 (3) ◽  
pp. 5428-5433
Keyword(s):  
Energy Efficiency ◽  
Energy Consumption ◽  
Carbon Footprint ◽  
Data Centers ◽  
Scaling Up ◽  
Environmental Hazards ◽  
Energy Usage ◽  
Cloud Technology ◽  
Sla Violation ◽  
Increasing Demand

In today’s technology driven world, use of cloud technology is ever increasing. To sustain the increasing demand, new data centers are coming up quite fast. Also, the equipment in these data centers is scaling up. Energy consumption by these data centers has opened a new front of research. Not only the energy consumption has to be minimized, but the carbon footprint needs to be arrested to minimize the environmental hazards. Energy usage and dissipation takes place in different forms. Customized metrics are required to evaluate the performance of these centers. We have classified the major efficiency metrics according to their importance in a given scenario. Different scenarios have been identified for the suitability of these metrics along with the formulae to calculate these metrics. Two new metrics namely Energy Eat by Servers and Switches (EESS) and Energy Eat and SLA violation Factor (EESF) have been proposed.

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