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8 results on '"Chen, Haiping"'

4. The performance analysis and evaluation of C-PV/T aided power generation system

Author

Zhang Xue-lei, Bu Yuegang, Zhang Heng, Liu Haowen, and Chen Haiping

Subjects
Engineering, Renewable Energy, Sustainability and the Environment, business.industry, 020209 energy, Electrical engineering, Energy Engineering and Power Technology, 02 engineering and technology, Solar energy, Power (physics), Fuel Technology, Electricity generation, Nuclear Energy and Engineering, Steam turbine, Distributed generation, 0202 electrical engineering, electronic engineering, information engineering, Fuel efficiency, Coal, Electricity, business, Process engineering
Abstract

Summary In this paper, a novel solar aided power generation (SAPG) hybrid system based on the structural characteristics of coal-fired power generation is established. In this system, the extraction steam of No.8 low pressure heater is replaced by the hot water coming from a concentration-photovoltaic/thermal (C-PV/T) module. The extraction steam returns into the steam turbine to do work, which increases the output power. And the electricity from the parallel C-PV/T module goes directly into the power grid, which increases the generated power. The C-PV/T module coupled with coal-fired power generation improves the solar energy efficiency and provides hot water. As a case study, the economic calculation is performed with actual operation data extracted from a 600-MW coal-fired unit. The results show that the total efficiency increased by 1.3%, the coal fuel consumption is lowered by 11 g/kW·h, and the investment recovery period is approximately 7 years. This study offers a theoretical support to the engineering demonstration.

Published
2017

7. Experimental study on water recovery and SO2 permeability of ceramic membranes with different pore sizes.

Author

Cheng, Chao, Zhang, Heng, and Chen, Haiping

Subjects
MEMBRANE permeability (Biology), HYDRAULICS, GAS flow, PORE size distribution, WATER temperature, WATER
Abstract

Summary: In this study, the water recovery performance from flue gas with ceramic membrane tubes of different pore sizes 30, 50, and 200 nm was experimentally studied. The effects of flue gas temperature, flue gas flow rate, water coolant temperature, and water coolant flow rate on the water recovery performance were analyzed. In addition, in the experimental study of SO2 permeability, the pH of the water coolant inlet and outlet was measured using a pH meter to analyze the SO2 permeability of ceramic membranes during the water recovery process. The results show that the water recovery performance of the 50 nm pore size ceramic membrane is better than that of the other two types of ceramic membrane in most cases. The maximum amount of reclaimed water and the highest water recovery rate are 4.82 kg/(m2·h) and 80.3%, respectively. Under the same SO2 concentration condition, the SO2 permeation flux of the 30 nm pore size ceramic membrane is smallest, and that of the 200 nm membrane is the largest. When the SO2/N2 mixed gas flow rate is 6 L/min, the SO2 permeation flux of the 30 and 200 nm membranes is 0.407 and 0.635 mmol/(m2·h), respectively. The ceramic membrane with smaller pore size can block more SO2 permeation, while the ceramic membrane with larger pore size can remove SO2 better. [ABSTRACT FROM AUTHOR]

Published
2020
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