Studies on Effect of Solar Collector Types for Low Temperature Hybrid Solar-biomass Thermal Power Plant

2014 ◽  
Keyword(s):  
Power Plant ◽  
Low Temperature ◽  
Thermal Power Plant ◽  
Solar Collector ◽  
Thermal Power

Exergetic Analysis of a Solar Thermal Power Plant

2013 ◽  
Vol 724-725 ◽  
pp. 156-162 ◽  
Author(s):  
Jing Qiu Wu ◽  
Dao Fei Zhu ◽  
Hua Wang ◽  
Yong Zhu
Keyword(s):  
Power Plant ◽  
Energy Saving ◽  
Heat Loss ◽  
Thermal Efficiency ◽  
Thermal Power Plant ◽  
Solar Collector ◽  
Thermal Power ◽  
Exergy Loss ◽  
Solar Thermal ◽  
Solar Thermal Power

The study of heat loss and exergy loss distribution in the power plant system plays a very important role in improving the efficiency of the system. In this paper, a dynamic simulation model of the 5MW solar thermal power system is established. Then, the simulation test with the actual data in a solar thermal power plant is carried out, and we analyze the heat and the exergy loss of the system. The results show that, the heat loss of the condenser is the largest, up to 72%. To increase the thermal efficiency of the system, the energy-saving research for the condenser should be pay attention to. The solar collector field has the most of exergy loss in the system, accounting for approximately 89%. From the exergy efficiency perspective, the solar collector system has huge potential for energy- saving. The thermal efficiency and exergy efficiency of a solar thermal power plant system increases as the load increases, full-load operation of the unit should be maintained as much as possible.

Design of a 200 kWe Solar Thermal Power Plant for Ontario

2008 ◽  
Author(s):  
Thomas A. Cooper ◽  
James S. Wallace
Keyword(s):  
Power Plant ◽  
Thermal Power Plant ◽  
Solar Collector ◽  
Thermal Power ◽  
Solar Thermal ◽  
Working Fluid ◽  
Small Scale ◽  
Computer Simulation Model ◽  
Night Time ◽  
Solar Thermal Power

A preliminary design and feasibility study has been conducted for a 200 kWe solar thermal power plant for operation in Ontario. The objective of this study is to assess the feasibility of small-scale commercial solar thermal power production in areas of relatively low insolation. The design has been developed for a convention centre site in Toronto, Ontario. The plant utilizes a portion of the large flat roof area of the convention centre to accommodate the collector array. Each power plant module provides a constant electrical output of 200 kWe throughout the year. The system is capable of maintaining the constant output during periods of low insolation, including night-time hours and cloudy periods, through a combination of thermal storage and a supplemental natural gas heat source. The powerplant utilized the organic Ranking cycle (ORC) to allow for relatively low source temperatures from the solar collector array. A computer simulation model was developed to determine the performance of the system year-round using the utilizability-solar fraction method. The ORC powerplant uses R245fa as the working fluid and operates at an overall efficiency of 11.1%. The collector is a non-concentrating evacuated tube type and operates at a temperature of 90°C with an average annual efficiency of 23.9%. The system is capable of achieving annual solar fractions of 0.686 to 0.874 with collector array areas ranging from 30 000 to 40 000 m2 and storage tank sizes ranging from 3.8 to 10 × 106L respectively. The lowest possible cost of producing electricity from the system is $0.393 CAD/kWh. The results of the study suggest that small-scale solar thermal plants are physically viable for year round operation in Ontario. The proposed system may be economically feasible given Ontario’s fixed purchase price of $0.42 CAD/kWh, but the cost of producing electricity from the system is highly dependent on the price of the solar collector.

Application of Low Low Temperature ESP Technology in Thermal Power Plant

2014 ◽  
Vol 1070-1072 ◽  
pp. 1481-1485 ◽  
Author(s):  
Yu Yun Fu ◽  
Ke Ma
Keyword(s):  
Power Plant ◽  
Low Temperature ◽  
Energy Saving ◽  
Flue Gas ◽  
Thermal Power Plant ◽  
Emission Reduction ◽  
Thermal Power ◽  
Dust Removal ◽  
Environmental Situation ◽  
Removal Technology

With the environmental situation becoming more and more serious, the dust removal technology in thermal power plant needs to be continually improved. Developed in recent years, the low cryogenic ESP technology can not only remove dust and most SO3 in flue gas, but also meet the needs of emission reduction and energy saving in coal-fired power plant, which means it is worthwhile to promote this kind of technology.

Application of PTFE Heat Exchanger in Low Temperature Waste Heat of Big Coal-Fired Power Plants

2015 ◽  
Vol 789-790 ◽  
pp. 503-507 ◽  
Author(s):  
Wen Peng Hong ◽  
Hui Zhang
Keyword(s):  
Heat Exchanger ◽  
Power Plant ◽  
Low Temperature ◽  
Thermal Power Plant ◽  
Power Plants ◽  
Waste Heat ◽  
Rapid Development ◽  
Thermal Power ◽  
Power Plant Boiler ◽  
Plant Boiler

With the rapid development of the national economy, the use of low-temperature heat in thermal power plant boiler can not be ignored.Although low temperature economizer is widely used in low-temperature waste heat recovery of thermal power plant boiler, the problems of corrosion and fouling are very significant.New type PTFE heat exchanger filled with high thermal conductivity properties can replace the existing metal heat exchanger, fundamentally solve the problems of corrosion and fouling, meet the future development of the thermal power plant, and realize the energy recycling to maximize the benefit of energy.

scholarly journals Comparative analysis of possibilities for raising the efficiency in thermal power plant by utilisation of waste heat energy

2016 ◽  
Vol 20 (6) ◽  
pp. 2171-2181
Author(s):  
Vladimir Mijakovski ◽  
Vangelce Mitrevski ◽  
Tale Geramitcioski
Keyword(s):  
Power Plant ◽  
Low Temperature ◽  
Thermal Power Plant ◽  
Waste Heat ◽  
Thermal Power ◽  
Heat Energy ◽  
Economic Feasibility ◽  
Energy Utilization ◽  
Temperature Heat ◽  
Basic Power

The possibility to use flue gases waste heat for increasing the efficiency of thermal power plant (TPP) explained in this work refers to lignite fired TPP-Bitola in Macedonia (3x233 MW installed electric capacity). Possibility to utilize low-temperature heat energy at the plant?s cold end is also considered in the analysis. Specific fuel consumption is used as an analysis and comparison parameter. Its reduction, compared to the basic power unit ranges between 0.4% and 3.4%. An analysis presenting economic feasibility of the low-temperature heat energy utilization concept for two different refrigerants used in the heat pump is also presented.

scholarly journals Performance Evaluation of a Novel Thermal Power Plant Process with Low-Temperature Selective Catalytic Reduction

Energies ◽  
2020 ◽  
Vol 13 (21) ◽  
pp. 5558
Author(s):  
Seongil Kim ◽  
Taeyoung Chae ◽  
Yongwoon Lee ◽  
Won Yang ◽  
Sungho Hong
Keyword(s):  
Power Plant ◽  
Low Temperature ◽  
Selective Catalytic Reduction ◽  
Thermal Power Plant ◽  
Process Model ◽  
Catalytic Reduction ◽  
Thermal Power ◽  
Gas Cleaning ◽  
New Process ◽  
Plant Process

We present the concept of a novel thermal power plant process in conjunction with low-temperature selective catalytic reduction (SCR). This process can be employed to achieve modern standards for NOx emissions and solve problems related to post-gas cleaning processes, such as thermal fatigue, catalyst damage, and an increase in differential pressure in the boiler. Therefore, this study is aimed at evaluating the performance of a novel flue-gas cleaning process for use in a thermal power plant, where a low-temperature SCR is implemented, along with the existing SCR. We developed a process model for a large-scale power plant, in which the thermal power plant was divided into a series of heat exchanger block models. The mass and energy balances were solved by considering the heat transfer interaction between the hot and cold sides to obtain the properties of each material flow. Using the process model, we performed a simulation of the new process. New optimal operating conditions were derived, and the effects that the new facilities have on the existing process were evaluated. The results show that the new process is feasible in terms of operating stability and cost, as well as showing an increase in the boiler thermal efficiency of up to 1.3%.

Nonlinear Trend Analysis of Mill Fan System Vibrations for Predictive Maintenance and Diagnostics

2012 ◽  
Vol 58 (4) ◽  
pp. 351-356
Author(s):  
Mincho B. Hadjiski ◽  
Lyubka A. Doukovska ◽  
Stefan L. Kojnov
Keyword(s):  
Power Plant ◽  
Trend Analysis ◽  
Thermal Power Plant ◽  
Power Plants ◽  
Thermal Power ◽  
Balkan Peninsula ◽  
Predictive Maintenance ◽  
Nonlinear Trend ◽  
The Subject ◽  
The Given

Abstract Present paper considers nonlinear trend analysis for diagnostics and predictive maintenance. The subject is a device from Maritsa East 2 thermal power plant a mill fan. The choice of the given power plant is not occasional. This is the largest thermal power plant on the Balkan Peninsula. Mill fans are main part of the fuel preparation in the coal fired power plants. The possibility to predict eventual damages or wear out without switching off the device is significant for providing faultless and reliable work avoiding the losses caused by planned maintenance. This paper addresses the needs of the Maritsa East 2 Complex aiming to improve the ecological parameters of the electro energy production process.

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