scholarly journals Investigation and Analysis of Green Refrigerant Zero ODP as an Alternative Refrigerant Lower Cost and GWP

2021 ◽  
Author(s):  
Piyanut Saengsikhiao ◽  
Juntakan Taweekun ◽  
Kittinan Maliwan
Keyword(s):  
Energy Efficiency ◽  
Lower Cost ◽  
Environmentally Friendly ◽  
Alternative Refrigerant ◽  
The Future

Abstract This research presents the results of investigation and analysis of the environmentally friendly refrigerant for R22 replacement. All refrigerant properties in this research were based on results from the REFPROP and CYCLE_D-HX software of NIST under CAN/ANSI/AHRI540. The results of this work show that HCs R170, R290, R600, R600a, R601, R601a, R1150 and R1270 can be mixed in HFCs R417A, R417B, R422A, R422B, R422C, R422D, R424A, R437A, R438A and R453A and able to be further developed in the future. All refrigerants are non-flammable refrigerants, non-toxic and zero ODP. The R453A mixed with HCs R600 (0.6%) and R601a (0.6%) and is COPc refrigerant close to that of R22 refrigerant. In conclusion, it can be used as an environmentally friendly and energy efficiency replacement for R22. All refrigerants are also refrigerants that are matched with the 4th generation refrigerants with the use of natural refrigerants.

Innovative and Biocompatible Approaches for Nanomaterial Production and Application

2022 ◽  
pp. 1-26
Author(s):  
Tobiloba Christiana Elebiyo ◽  
Damilare Rotimi ◽  
Rotdelmwa Maimako Asaleye ◽  
Boluwatife Boluwatife Afolabi ◽  
Bukola Taiwo Atunwa ◽  
...  
Keyword(s):  
Natural Resources ◽  
Process Optimization ◽  
Health Sector ◽  
Environmentally Friendly ◽  
Future Generation ◽  
Synthesis Of Nanoparticles ◽  
Green Nanotechnology ◽  
Functionalized Nanomaterials ◽  
The World ◽  
The Future

The world is going green; hence, environmentally friendly practices that would conserve natural resources for the future generation are encouraged. As a consequence, the world is less concerned about the numerous applications of nanotechnology, especially in the health sector; rather, it is more concerned about the sustainability of functionalized nanomaterials. Thus, the future of nanotechnology depends on its ability to ‘go green'. Green nanotechnology attempts to synthesize improved, nontoxic, and biocompatible nanomaterials with sustainable benefits using eco-friendly materials. Although green nanotechnology is considered a sustainable, viable, and biocompatible approach to the production of eco-friendly nanomaterials, there are shortcomings especially in microbial handling and process optimization. In this chapter, the authors aim to appraise not only the use of biocompatible approaches for the synthesis of nanoparticles and/or nanomaterials but also their shortcomings.

The Future of Solder Joint Encapsulant

2015 ◽  
Vol 2015 (1) ◽  
pp. 000644-000648
Author(s):  
Mary Liu ◽  
Wusheng Yin
Keyword(s):  
High Temperature ◽  
Low Temperature ◽  
Solder Joint ◽  
Thermal Cycling ◽  
Lower Cost ◽  
Solder Joints ◽  
Cost Of Ownership ◽  
The Future ◽  
High Temperature Solder

Solder joint encapsulant adhesives have been successfully used to enhance the strength of solder joints and improve thermal cycling as well as drop performance in finished products. The use of solder joint encapsulant adhesives can eliminate the need for underfill materials and the underfill process altogether, thus simplifying rework, which results in a lower cost of ownership. Solder joint encapsulant adhesives include: low temperature and high temperature solder joint encapsulant adhesives, and their derivatives. Each solder joint encapsulant adhesive has: unfilled and filled solder joint encapsulant adhesives, and solder joint encapsulant paste. Each solder joint encapsulant product has been designed for different applications. In this paper, we are going to discuss the details and future of solder joint encapsulant adhesives.

Aspects Influencing the Utilization of the Environmentally Friendly Vehicles in the Logistics and Transport Companies and the Future of Alternative Drive Systems

2015 ◽  
Vol 803 ◽  
pp. 24-32
Author(s):  
Jaroslava Kubanova ◽  
Miroslava Britanakova ◽  
Jan Lizbetin ◽  
Ondrej Stopka
Keyword(s):  
Environmentally Friendly ◽  
Customer Requirements ◽  
Continuous Increase ◽  
Alternative Drive ◽  
The Future ◽  
Drive Systems

Purchasing and utilizing the vehicles is an important element of corporate logistics in the transport companies. Novel trends and customer requirements in terms of range and quality of received services of the carriers have continuous increase. This paper discusses about aspects influencing the utilization the environmentally friendly vehicles, in other words the motivation for their purchasing, in terms of toll charges for transport and logistics companies in the selected countries. This could be one of tools to maintain competitiveness of the particular company in the market. The paper is focused on description of selected elements regarding the future of alternative drive systems as well.

scholarly journals Energy Use Efficiency Past-to-Future Evaluation: An International Comparison

Energies ◽  
2019 ◽  
Vol 12 (19) ◽  
pp. 3804 ◽  
Author(s):  
Chia-Nan Wang ◽  
Thi-Duong Nguyen ◽  
Min-Chun Yu
Keyword(s):  
United States ◽  
Energy Efficiency ◽  
Energy Consumption ◽  
Energy Demand ◽  
Energy Use ◽  
The United States ◽  
Total Energy Consumption ◽  
The Future ◽  
The Status ◽  
Energy Efficiency Evaluation

Despite the many benefits that energy consumption brings to the economy, consuming energy also leads nations to expend more resources on environmental pollution. Therefore, energy efficiency has been proposed as a solution to improve national economic competitiveness and sustainability. However, the growth in energy demand is accelerating while policy efforts to boost energy efficiency are slowing. To solve this problem, the efficiency gains in countries where energy consumption efficiency is of the greatest concern such as China, India, the United States, and Europe, especially, emerging economies, is central. Additionally, governments must take greater policy actions. Therefore, this paper studied 25 countries from Asia, the Americas, and Europe to develop a method combining the grey method (GM) and data envelopment analysis (DEA) slack-based measure model (SMB) to measure and forecast the energy efficiency, so that detailed energy efficiency evaluation can be made from the past to the future; moreover, this method can be extended to more countries around the world. The results of this study reveal that European countries have a higher energy efficiency than countries in Americas (except the United States) and Asian countries. Our findings also show that an excess of total energy consumption is the main reason causing the energy inefficiency in most countries. This study contributes to policymaking and strategy makers by sharing the understanding of the status of energy efficiency and providing insights for the future.

Sign in / Sign up

Export Citation Format

Share Document