scholarly journals Economic Analysis of Heat Pump Recovery System for Circulating Water Waste Heat in Power Plant

2021 ◽  
Vol 256 ◽  
pp. 02011
Author(s):  
Ze Wang ◽  
Honghong Shen ◽  
Qunyin Gu ◽  
Daoyuan Wen ◽  
Gang Liu ◽  
...  
Keyword(s):  
Power Plant ◽  
Energy Saving ◽  
Heat Pump ◽  
Waste Heat ◽  
Heat Pumps ◽  
Water Saving ◽  
Absorption Heat Pump ◽  
Circulating Water ◽  
Cold Source ◽  
Heat Pump Unit

The use of heat pump technology to recover the waste heat of circulating water from the power plant instead of steam extraction for heating can not only improve the thermal efficiency of the unit and reduce the loss of cold source, but also has great advantages in energy saving. This paper uses absorption and compression heat pumps to recover the waste heat of circulating water in the power plant to study its energy-saving benefits. Under the same heating load, the economics of the two heat pumps are calculated and analyzed. The results show that the energy-saving benefits of absorption heat pump units are far greater than compression units. But in terms of water saving, the water saving capacity of the compression heat pump unit is higher than that of the absorption heat pump.

Application of Double-Used Absorption Heat Pump in Power Plants

2012 ◽  
Vol 542-543 ◽  
pp. 70-73 ◽  
Author(s):  
Xin Hui Cao ◽  
Guang Zhang ◽  
Xi Lun Wang ◽  
Yu Ning Zhang
Keyword(s):  
Power Plant ◽  
Energy Saving ◽  
Heat Pump ◽  
Power Plants ◽  
Waste Heat ◽  
Water Saving ◽  
Energy Utilization ◽  
Absorption Heat Pump ◽  
Quantitative Calculation ◽  
Steam Extraction

Absorption heat pump (AHP) heating in power plants in winter is an effective way to recover waste heat and make full use of energy. In this paper, quantitative calculation is taken to analyze the energy saving and economy efficiency of AHP heating in a power plant. The rate of energy utilization ηtp, the coal and water saving amount and the increased income of AHP heating are calculated. Results show AHP heating in power plants is superior to steam extraction heating both in energy saving and economy.

Influence of Temperature Parameter Change on Lithium Bromide Absorption Heat Pump Performance

2013 ◽  
Vol 291-294 ◽  
pp. 1670-1674
Author(s):  
Biao Li ◽  
Jiang Fan
Keyword(s):  
Power Plant ◽  
Heat Pump ◽  
Waste Heat ◽  
Lithium Bromide ◽  
Optimal Operation ◽  
Pump System ◽  
Absorption Heat Pump ◽  
Heat Pump System ◽  
Heat Pump Unit ◽  
The Impact

It is the new way of the thermal power plant energy conservation to recycling plant circulating water waste heat for heating with the heat pump technology. The recovery of low temperature waste heat is the background. And lithium bromide absorption heat pump is the object of this study. The impact of changes in temperature parameters on the performance of heat pump unit is analyzed. As a theoretical basis for the design of the heat pump system and power plant heat pump unit’s optimal operation provide a reference. The result provides a theoretical reference for the optimal operation of the heat pump system design and power plant heat pump units.

Research on the Heating Plan of Recovering Condensing Heat of Power Plant by Water Source Heat Pump Unit

2012 ◽  
Vol 608-609 ◽  
pp. 1241-1245
Author(s):  
Wei Qiu ◽  
Li Zhang ◽  
Qing Rong liu
Keyword(s):  
Power Plant ◽  
Heat Pump ◽  
Air Conditioning ◽  
Waste Heat ◽  
Water Source ◽  
Pump Unit ◽  
Air Conditioning System ◽  
Central Heating ◽  
Heat Pump Unit ◽  
Direct Discharge

This paper analyses the energy consumption of water source heat pump, shows that the performance coefficient of water source heat pump unit is directly related to the temperature of water resources, and discusses the feasibility of central heating by recovering condensing heat of power plant using water source heat pump unit. It analyzes the energy saving benefit of water source heat pump unit is significant compared with traditional heating. Using the technology recovers waste heat of power plant, which can not only decrease the energy waste on the direct discharge of waste heat and water, but at the same time, it is a new air conditioning system without environmental pollution.

Heat Integration of Absorption Heat Pump in a Milk Powder Dairy

2000 ◽  
Author(s):  
Jens Møller Andersen
Keyword(s):  
Heat Pump ◽  
Waste Heat ◽  
Cooling System ◽  
Milk Powder ◽  
Electricity Consumption ◽  
Heat Pumps ◽  
Heat Integration ◽  
Absorption Heat Pump ◽  
Absorption Cooling ◽  
Absorption Cooling System

Abstract Heat integration with absorption heat pumps requires investigation of many types of plant designs. In this article, it is concluded that in many cases high temperature absorption systems for heat recovery are more economically feasible than absorption systems for cooling purposes. The conclusion is based on a project where the scope was to investigate technical and economical possibilities for heat integration of an absorption heat pump in a milk powder plant. The first idea behind the project was to use the waste heat from the rejected air to drive an absorption cooling system to reduce the electricity consumption for cooling proposes. The model of the plant was based on simulations as a background for a time averaged COP model. It was concluded that an absorption system for generating low temperature steam is more feasible.

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.

Application Research on Power Plant Heat Pump Regenerative Thermal System

2012 ◽  
Vol 608-609 ◽  
pp. 965-968
Author(s):  
Xiao Qian Zhang ◽  
Guang Zhang
Keyword(s):  
Power Plant ◽  
Heat Pump ◽  
Waste Heat ◽  
Fuel Efficiency ◽  
Coefficient Of Performance ◽  
Thermal System ◽  
Application Research ◽  
Coal Consumption ◽  
Circulating Water ◽  
Pressure Cylinder

To recycle waste heat from circulating water, the model of the power plant heat pump regenerative thermal system is put forward, and the indexes of the system are analyzed. It is indicated in the specific case that the absorption heat pump has an advantage over the compression heat pump. Using the extraction steam of the low pressure cylinder as its driving heat source, economize on coal can be realized in the condition that the coefficient of performance(COP) of the heat pump is above the critical COP. For the case of the compression heat pump, the fuel efficiency is improved a little, but on the other hand, as the station service power is increased, the power supply coal consumption is increased too.

The use of low-temperature secondary energy resources using heat transformers in non-ferrous metallurgy

2020 ◽  
Vol 13 (2) ◽  
pp. 97-104
Author(s):  
S. A. Prishchepova ◽  
I. A. Sultanguzin ◽  
A. Sh. Alimgazin ◽  
I. V. Evseenko ◽  
A. V. Fedyukhin ◽  
...  
Keyword(s):  
Power Plant ◽  
Heat Pump ◽  
Thermal Power Plant ◽  
Waste Heat ◽  
Thermal Power ◽  
Energy Resources ◽  
Low Grade ◽  
Pump Unit ◽  
Nickel Production ◽  
Heat Pump Unit

The concepts of developing efficient and reliable schemes for the use of waste heat of low-potential energy resources in heat transformers (HT) are considered. Examples of using HT in several non-ferrous metallurgy plants in Russia and Kazakhstan are given: the production of nickel, zinc and ferroalloys. In the case of nickel production, two schemes are proposed for consideration: for summer and winter modes. The main object of study is a nickel production scheme using a lithium bromide absorption chiller (AbCh). Recycled water is the main source of utilized low-grade waste heat for AbCh. The cold obtained in AbCh is necessary for the technological process. The basic parameters were calculated under various extreme conditions, the energy effect of the modernization of the circuit was estimated, and equipment was selected. Studies have shown the feasibility of introducing AbCh into circuits with a large amount of waste heat. Low-grade heat utilization of nickel production using heat pump unit (HPU) in winter allows to obtain heat energy for heating water from the heating network and raw water for feeding the boiler house of a thermal power plant.Another example of HT use is a heat pump unit (HPU) in the production of zinc and ferroalloys. HPU is designed to heat feed water before chemical water purification and at the same time “cool down” the circulating water, which is then used on a series of electrolysis, replacing purchased artesian water. In winter, the heat produced at HPU is used for heating, ventilation and hot water supply, which allows to dispense with the services of a third-party thermal power plant.

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