Research on Green Power Dispatching Based on an Emergy-Based Life Cycle Assessment

Abstract

Environmental protection pressures and green energy strategies have created major challenges for a cleaner production of China’s coal-fired power generation. Although China’s electric power dispatching department has tried to prioritize clean energy, the current dispatching models lack environmental indicators related to coal-fired power generation. The main purpose of this paper is to provide a comprehensive environmental indicator for the cleanliness evaluation of coal-fired power plants. In this paper, the (Emergy-based Life Cycle Assessment) Em-LCA method is used to measure and analyze environmental related resource consumption, socio-economic investment, and emissions in the whole life cycle of coal-fired power plants. At the same time, based on the above three environmental impacts in the whole life cycle, this paper constructs the (Em-LCA based Cleaner Production Comprehensive Evaluation) ECPCE index to guide a green dispatching plan. By comparing the calculation results of the index, this paper finds that there are differences in the environmental advantages of different generating units in green dispatching, which are closely related to the process management of coal-fired power plants in production and the environment.

Systematic Design of Solvent Recovery Pathways: Integrating Economics and Environmental Metrics

“…The Emergy analysis quantifies three footprints, namely, renewable natural resources (R), nonrenewable natural resources (N), and imported resources (F). These footprints lead to the quantification of Emergy yield ratio (EYR), environmental loading ratio (ELR), and the Emergy Sustainability Index (ESI), which are the indicators for assessing the sustainable development of a system. ,− The total Emergy depicts the wealth of the system. The EYR, estimated by dividing the total Emergy by the imported resources, describes the economic dependence of the process on imports.…”

Environmental Performance Evaluation of New Type Thermal Power Enterprises Considering Carbon Peak and Neutrality

“…Reference [21] evaluates the environmental performance of 30 provincial-level administrative regions in China according to the ratio of thermal power generation, which inspires us to introduce indicators such as the ratio of new energy power generation and the ratio of new energy installed capacity into the environmental performance evaluation of new type thermal power enterprises. Reference [22] regards the consumption of environmentrelated resources, the level of environmental investment and the emission of pollutants in the whole life cycle of power generation enterprises as their main environmental output. Reference [23] considers that CO 2 , SO 2 , NOx, and PM2.5 are the bad outputs of the environment, and their emissions should be listed as key factors in environmental performance evaluation.…”

Assessing the sustainability of grass-based livestock husbandry in Hulun Buir, China

“…Además, muchas investigaciones cuantifican valores adicionales emergéticos, lo cual ha permitido alimentar una base de datos con estos valores. La caracterización de estos valores se realiza usando "transformicidades", las cuales son factores que evidencian los emJoules requeridos por Joules de algún bien o servicio, con lo cual a la hora de calcular la emergía por ejemplo de una corriente de aire, basta con conocer la energía que tiene y este valor se multiplica por el valor de transformicidad establecido, obteniendo así el valor de emergía; es decir, la energía requerida para producir dicha corriente de aire (Geng et al, 2010;T. Li et al, 2020;Panzieri et al, 2002).…”