Assessment of Effectiveness of Renewable Energy Systems in Mitigating Global Warming Based on Net Energy Analysis.

1993 ◽  
Vol 59 (565) ◽  
pp. 2681-2688
Author(s):  
Makoto Akai ◽  
Noboru Nomura ◽  
Iwao Yamashita
2021 ◽  
pp. 49-65
Author(s):  
Mamta Chahara ◽  
Sarita Khaturia ◽  
C. B. Mahto ◽  
Harlal Singh ◽  
Vinay K. Chaudhary

Hybrid renewable energy systems like solar and wind systems are growing at rapid pace due to the swift depletion of petroleum resources and global warming phenomena. In recent years, global warming and climate change are two major problems in the global economy and environment, and they have a significant effect on the inadequate accessibility and rising cost of energy. The high consumption of energy in the world has already increased concerns about supply difficulties and significant environmental effects, such as global warming and climate change. The results show that energy created by traditional energy sources causes an increase in greenhouse gas discharge, which could affect global warming. With the consideration of the issues discussed above, continual potential action for sustainable improvement is required. In addition, cost-effective, consistent, and environmentally friendly energy systems are the attributes of a sustainable energy system that efficiently uses local assets and networks. Therefore, renewable energy sources are positioned as one of the proficient and useful solutions. Currently, some countries have the potential for different types of energy resources, such as solar, wind, etc., and in addition, many companies are developing, constructing and setting up modern and high-tech renewable energy systems. These countries attempt to lead a large network of investigators and other partners to utilize advanced technologies that will provide a cost for renewable electricity generation that is competitive with traditional sources of energy. Although a number of studies have been performed on renewable energy systems but hybrid renewable energy systems (HRES) are in demand in this era due to advanced renewable energy technologies. For these types of hybrid plant, researchers are designing a most favorable system by incorporating optimization techniques to predict optimal units for solar PV, wind power generation and batteries in minimize cost for generating stable power supply. The unique features of hybrid energy plants such as instant power, power quality spinning reserve replacement, ancillary services, internal combustion engines–integrated with energy storage and solar PV–offer considerable potential for fuel and cost savings. This article focuses primarily on different hybrid solar systems, advancements and their applications.


Energies ◽  
2019 ◽  
Vol 12 (17) ◽  
pp. 3304 ◽  
Author(s):  
Sangmu Bae ◽  
Yujin Nam ◽  
Ivor da Cunha

The zero energy building (ZEB) is being introduced as a new energy policy in the building sector. Accordingly, to realize the ZEB, renewable energy systems that can produce energy are essential. Various hybrid systems are being proposed to develop a more efficient system than individual renewable energy systems, among which tri-generation systems are attracting attention. In this study, in order to find an economic solution of a tri-generation system for the realization of ZEB, the simulation model using the dynamic energy analysis code was constructed and a feasibility study was conducted. Moreover, the conventional design method and the design method for ZEB realization were proposed, and the return on investment (ROI) was calculated according to four local conditions and two design methods. As a result of energy analysis, the energy self-sufficiency (ES) in Seoul, Ulsan, Ottawa and Toronto were calculated as 62%, 65.1%, 57.7%, and 60.2%, respectively. Moreover, results of feasibility analysis compared to a conventional system showed that the payback period of the tri-generation system in South Korea was within 13 years, and Canada was within 10 years.


2014 ◽  
Author(s):  
Miles Greiner ◽  
Amy Childress ◽  
Sage Hiibel ◽  
Kwang Kim ◽  
Chanwoo Park ◽  
...  

2017 ◽  
Author(s):  
Emma M. Elgqvist ◽  
Katherine H. Anderson ◽  
Dylan S. Cutler ◽  
Nicholas A. DiOrio ◽  
Nicholas D. Laws ◽  
...  

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