Energy system transformations and carbon emission mitigation for China to achieve global 2 °C climate target

2021 ◽  
Vol 292 ◽  
pp. 112721
Author(s):  
Guangpu Zhao ◽  
Biying Yu ◽  
Runying An ◽  
Yun Wu ◽  
Zihao Zhao
2019 ◽  
Vol 11 (7) ◽  
pp. 1930 ◽  
Author(s):  
Ying Zhu ◽  
Quanling Tong ◽  
Xueting Zeng ◽  
Xiaxia Yan ◽  
Yongping Li ◽  
...  

Nowadays, rural power supply in China plays an important role in restricting the economic development and improvement of residential living standards. In this study, an interval full-infinite programming rural energy model (IFIP-REM) was developed for supporting distributed energy system (DES) optimal design under uncertainties in rural areas. By affecting the upper and lower bounds of the interval by complex and variable external conditions, IFIP-REM could simulate the influence of external systems. To validate the model, a real case study of DES optimal design in Guanzhong, a rural area of China, was tested and aimed to minimize system cost and constraints of resources, energy supply reliability, and carbon emission mitigation. The data revealed generation of reasonable optimization schemes to obtain interval solutions of IFIP-REM. Compared to centralized energy system (CES), DES reduced electricity purchasing of the municipal grid by 47.5% and extended carbon emission of both upper and lower bounds to [17.13, 44.51] % and [12.42, 36.02] %, respectively. Overall, the proposed model could help managers make decisions of DES optimal design by coordinating conflicts among economic cost, system efficiency, and carbon emission mitigation.


Energies ◽  
2021 ◽  
Vol 14 (23) ◽  
pp. 8020
Author(s):  
Saboor Shaik ◽  
Kirankumar Gorantla ◽  
Aritra Ghosh ◽  
Chelliah Arumugam ◽  
Venkata Ramana Maduru

Strategic selection of glazing, its window-to-wall ratio, and wall thickness of building reduce the energy consumption in the built environment. This paper presents the experimental results of solar optical properties of five glasses: clear, tinted bronze, tinted green, bronze reflective, and polymer dispersed liquid crystal glasses. Laterite room models were modeled with four different thicknesses and four different glasses using Design Builder, and thermal simulation tests were carried out using Energy Plus. The energy savings and carbon emission mitigation prospective of a building’s glazing variety, window-to-wall ratio (WWR), and wall thickness were investigated. The results revealed that among the five window glasses studied, the polymer dispersed liquid crystal glazing window (PDLCGW) was found to be the most energy-efficient for low heat gain in laterite rooms. The laterite room with 0.23 m wall thickness and 40% PDLCGW WWR reduced 18.9% heat gain in comparison with the laterite room with 0.23 m wall thickness and 40% clear glass WWR. The laterite room of 0.23 m wall thickness with PDLCGW glazing of 40% WWR enhanced cooling cost savings up to USD 31.9 compared to the laterite room of 0.08 m wall thickness with 40% PDLCGW. The laterite room of 0.23 m wall thickness with PDLCGW glazing of 40% WWR also showed improved carbon mitigation of 516 kg of CO2/year compared to the 0.23 m wall thickness laterite room of 40% WWR with clear glass glazing. The results also showed that the laterite room with 0.23 m wall thickness and 100% clear glass WWR increased heat gain by 28.2% in comparison with the laterite room with 0.23 m wall thickness and 20% clear glass WWR. The results of this article are essential for the strategic design of buildings for energy saving and emission reduction.


2018 ◽  
Vol 163 ◽  
pp. 288-298 ◽  
Author(s):  
P.E.N.G. Yun ◽  
L.I. Xiangda ◽  
W.A.N.G. Wenyuan ◽  
L.I.U. Ke ◽  
L.I. Chuan

2019 ◽  
Vol 11 (8) ◽  
pp. 2428 ◽  
Author(s):  
Yafei Wang ◽  
Meng Liao ◽  
Yafei Wang ◽  
Arunima Malik ◽  
Lixiao Xu

This paper innovatively combines Inward Foreign Direct Investment (IFDI) and Outward Foreign Direct Investment (OFDI) as a measure of two-way FDI coordinated development to consider the coupling and coordination level of FDI. Under the analytical framework of Copeland and Taylor (1994), it introduces this new measure to investigate the effects of China’s carbon emissions during 2004–2016, using the spatial econometric model and the differential generalized method of moments. We find that China’s carbon emissions show significant spatial correlation characteristics and interregional diffusion, which indicates that regional coordinated cooperative governance is key to carbon emission mitigation in China, and that China’s two-way FDI coordinated development has presented a significant braking effect on carbon emissions during the research period. Furthermore, we decompose the effects of the two-way FDI on carbon emissions into three parts. This decomposition shows that the scale effect is positive, while both the composition and the technique effects are negative. The technique effect essentially dominates the emission reduction induced by the coordinated development of the two-way FDI.


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