Analysis on Circulating Water Heat Utilization Technology in Thermal Power Plants

2013 ◽  
Vol 753-755 ◽  
pp. 2727-2730
Author(s):  
Jian Tao Liu ◽  
Xiao Cheng Ma ◽  
Kun Kun You ◽  
Jian Xing Ren ◽  
Yong Wen Yang
Keyword(s):  
Power Unit ◽  
Heat Pump ◽  
Power Plants ◽  
Waste Heat ◽  
Thermal Power ◽  
Water System ◽  
Water Source ◽  
Circulating Water ◽  
Heat Utilization ◽  
Circulating Water System

The thermal power unit is the major unit in Chinas power supply. Circulating water has large low-temperature waste-heat which can be recycled. The principles of water source heat pump technology is analyzed, characteristic of circulating water system in thermal power unit is studied. Then two kinds of connection methods between circulating water system and water source heat pump (WSHP) are presented.

Study on the Comprehensive Program of Heat Pump Technology Recycling Thermal Power Plants Circulating Water Heat

2013 ◽  
Vol 313-314 ◽  
pp. 759-762
Author(s):  
Yun Feng Ma ◽  
Yan Xiang Liu ◽  
Tao Ji
Keyword(s):  
Heat Pump ◽  
Power Plants ◽  
Waste Heat ◽  
Thermal Power ◽  
Heating System ◽  
Hot Water ◽  
Thermal Power Plants ◽  
Domestic Hot Water ◽  
Circulating Water ◽  
Central Heating

In order to fully recycle power plant’s circulatingwater heat, improve the thermal efficiency and protect the environment, thispaper designs the comprehensive scheme of heat pumptechnology recycling power plant’s circulating water heat, including theboiler mae-up water pre-heating system, the central heating circulatingsystem and the domestic hot water circulating system, which not only run at thesame time but also function independently. Even in non-heating seasons,the waste heat of circulating water can be utilized fully. It is worthmentioning that this paper puts forward to install climate compensationdevice in the central heating system, which can perform intelligent district timesharing control to meet different users’ needs.

Economic Analysis of Water Source Heat Pump Using Thermal Power Plant Circulating Water Waste Heat

2014 ◽  
Vol 672-674 ◽  
pp. 1600-1603
Author(s):  
Tian Yu Sun ◽  
Jian Zhang ◽  
Qing Yang Wang ◽  
Jian Xing Ren
Keyword(s):  
Power Plant ◽  
Heat Pump ◽  
Thermal Power Plant ◽  
Power Efficiency ◽  
Waste Heat ◽  
Thermal Power ◽  
Water Source ◽  
Low Grade ◽  
Circulating Water ◽  
Water Waste

Using water-source heat pump for recovering waste heat of thermal power plant circulating water, mining of low grade heat energy. It can improve the power efficiency of comprehensive energy, but also can reduce the evaporation cooling water, the heat and moisture discharge to the environment. It has the economic, social and environmental benefits are very remarkable. Through the analysis of 600MW thermal power unit circulating water waste heat and calculation of water source heat pump heating, the feasibility of the water source heat pump technology in the recovery of power plant circulating water waste heat can be obtained.

Circulating Water Resistance Characteristics of the Thermal Power Plant

2012 ◽  
Vol 614-615 ◽  
pp. 573-576
Author(s):  
Yong Li ◽  
Jing Li
Keyword(s):  
Power Plant ◽  
Water Flow ◽  
Characteristic Curve ◽  
Thermal Power ◽  
Water System ◽  
Computation Method ◽  
Long Distance ◽  
Circulating Water ◽  
Circulating Water System ◽  
Curve Intersection

The measurement method of the power plant circulating water flow was investigated. When the characteristics of the circulating water system was calculated through characteristic curve intersection, circulating water pumps were generally assumed to be in parallel and the resistance of main pipes was ignored. In addition, the circulating water flow of each unit was considered equivalent. This method was accurate only when the distance of main pipe and circulating water pump is shorter. Therefore, the hydraulic computation method combining with pipe network has been proposed with the long distance condition. This method calculates accurately the circulating water flow of each unit. This research lays the foundation for the optimum vacuum calculation of the whole plant.

scholarly journals Energy Saving Analysis of Circulating Water Waste Heat Recovery from Water Source Heat Pump

2019 ◽  
Vol 295 ◽  
pp. 052016
Author(s):  
Chuang Ma ◽  
Jianxing Ren ◽  
Fangqin Li ◽  
Xin Hou ◽  
Haijun Feng ◽  
...  
Keyword(s):  
Energy Saving ◽  
Heat Pump ◽  
Heat Recovery ◽  
Waste Heat Recovery ◽  
Waste Heat ◽  
Water Source ◽  
Circulating Water ◽  
Water Waste

scholarly journals Heat Supply for the Power-Biological Complex from TPP and NPP

2021 ◽  
Vol 2096 (1) ◽  
pp. 012150
Author(s):  
E Burdenkova
Keyword(s):  
Power Plant ◽  
Nuclear Power Plant ◽  
Heat Supply ◽  
Nuclear Power ◽  
Power Plants ◽  
Environmental Problem ◽  
Waste Heat ◽  
Thermal Power ◽  
Thermal Power Plants ◽  
Circulating Water

Abstract This work is devoted to the problem of utilization of waste heat from condensers of thermal power plants and nuclear power plants. The waste heat of the condensers of TPPs and NPPs, together with the circulating water, enters the environment, causing its thermal pollution. The use of this heat in an energy-biological complex, for example, in fisheries, increases their efficiency and solves an environmental problem. Compared to ordinary ponds, this energy complex has an almost year-round increase in biomass and accelerated maturation of producers. The article presents a developed methodology that makes it possible to assess the effectiveness of such a fishery. Calculations using this method were carried out for a fish farm raising sturgeons on the basis of the waste heat of a nuclear power plant with a VVER-1200 reactor and a K-1200-6.8/50 turbine

Economic Analysis of the Absorption Heat Pump in Supercritical Unit

2013 ◽  
Vol 291-294 ◽  
pp. 1666-1669
Author(s):  
Yun Li ◽  
Kai Song
Keyword(s):  
Low Temperature ◽  
Heat Pump ◽  
Power Plants ◽  
Waste Heat ◽  
Lithium Bromide ◽  
Environmental Benefits ◽  
Absorption Heat Pump ◽  
Practical Applications ◽  
Circulating Water ◽  
Central Heating

As an effective energy-saving device, the heat pump is environmentally friendly and advantageous in the recovery of low-temperature and middle-temperature waste heat. So it is increasingly being used in practical applications. The circulating water which is produced by power plants has a large number of low-temperature waste heat. It will bring huge economic and environmental benefits by using heat pump technology to recover those waste heat energy. The application of the heat pump in supercritical unit is discussed as the example of central heating project using waste heat in a power plant. And the basic principle of absorption heat pump is introduced. The economy, energy conservation and environmental benefits of lithium bromide absorption heat pump are also analyzed when it is used in 600MW supercritical unit.

Application Studies of Fuzzy Control on Adding Medicament in Circulating Water Treatment

2012 ◽  
Vol 466-467 ◽  
pp. 328-331
Author(s):  
Xin Li Chi ◽  
Sheng Lin ◽  
Xi Chang Han ◽  
Da Ren Wang
Keyword(s):  
Fuzzy Control ◽  
Power Plants ◽  
Fuzzy Inference ◽  
Control Method ◽  
Water System ◽  
Circulating Water ◽  
Fuzzy Input ◽  
Actual Operation ◽  
Pure Delay ◽  
Circulating Water System

Considering the control problem of circulating water system in the power plants with pure delay, inertia, and sensitivity to the environmental temperature, this paper applies the fuzzy algorithm to adding medicament control in circulating water system. The main procedure of fuzzy control algorithm consists of fuzzification, fuzzy inference and defuzzification. The fuzzy input and output variables are chosen as seven classes. Then, according to the actual operation situations and the expert experiences, the fuzzy rules are determined in the form of table. The effectiveness of the proposed fuzzy control method is proved by some practical examples.

scholarly journals Selection of Heat Pump Capacity Used at Thermal Power Plants under Electricity Market Operating Conditions

Energies ◽  
2021 ◽  
Vol 14 (1) ◽  
pp. 226
Author(s):  
Milana Treshcheva ◽  
Irina Anikina ◽  
Vitaly Sergeev ◽  
Sergey Skulkin ◽  
Dmitry Treshchev
Keyword(s):  
Electric Power ◽  
Heat Pump ◽  
Heat Load ◽  
Power Plants ◽  
Thermal Power ◽  
Heat Pumps ◽  
Operating Conditions ◽  
Energy Resources ◽  
Thermal Power Plants ◽  
Maximum Heat

The percentage of heat pumps used in thermal power plants (TPPs) in the fuel and energy balance is extremely low in in most countries. One of the reasons for this is the lack of a systematic approach to selecting and justifying the circuit solutions and equipment capacity. This article aims to develop a new method of calculating the maximum capacity of heat pumps. The method proposed in the article has elements of marginal analysis. It takes into account the limitation of heat pump capacity by break-even operation at electric power market (compensation of fuel expenses, connected with electric power production). In this case, the heat pump’s maximum allowable capacity depends on the electric capacity of TPP, electricity consumption for own needs, specific consumption of conditional fuel for electricity production, a ratio of prices for energy resources, and a conversion factor of heat pump. For TPP based on combined cycle gas turbine (CCGT) CCGT-450 with prices at the Russian energy resources markets at the level of 2019, when operating with the maximum heat load, the allowable heat pump capacity will be about 50 MW, and when operating with the minimum heat load—about 200 MW.

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