Analysis of Combined Ground-Source Heat Pump and Water Energy Storage System and its Economic Impact Factors

2014 ◽  
Vol 953-954 ◽  
pp. 771-774
Author(s):  
Xiao Ting Wu ◽  
Ling Xia Kong ◽  
Chun Mei Guo ◽  
Bin Hu

This paper makes an introduction of the working principle and the technical and economic benefits of the combined ground-source heat pump and water energy storage system. And then according to the characteristic of this system itself and its mode of operation, we can point out that the energy storage rate, the local policy of electricity price and the strategy of operation are the main factors which influent the economic characteristics of the system. Using the initial investment and the operation cost of the system as the economy evaluation index, we respectively analyze the influence of the above factors on the index. And wish the results of the analysis can provide reference on the design of this new type air-conditioning system.

2014 ◽  
Vol 1030-1032 ◽  
pp. 620-623
Author(s):  
Chao Li ◽  
Hua Su ◽  
Xiao Lu Gao

In the present work, an operational air-conditioning system combined with buried pipe ground source heat pump and ice storage (ABI) was designed according to the loading characteristic of one office building. Additionally, the system running process and working mode together with the operational strategy on both designing day and non-designing day were discussed in this paper. To satisfy the cooling demand as well as cut down the operational cost, operating modes on different occasions must be planned reasonably to better control the system while running.


2012 ◽  
Vol 252 ◽  
pp. 433-437
Author(s):  
Zhi Yang Yuan

The ground-source heat pump is a system which takes the shallow surface soil energy as the source of heating and cooling. The temperature of ground source is relatively stable throughout the year, which makes the ground-source heat pump have the higher operation efficiency compared with the traditional air-conditioning system.Study on the ground-source heat pump with properties of thermal dynamics used in heating and air comditioning by ecomomic analysis is still an important issue. In this paper, the ground-source heat pump and the traditional heating and air-conditioning system have been compared in terms of their economic competitiveness. Firstly, it is required to compare the ground-source heat pump with the traditional heating method in terms of the heating economy. Afterwards, it is necessary to compare the ground-source heat pump with the conventional electric refrigeration in terms of the air-conditioning economy. Finally, it is needed to conduct the comprehensive and economic analysis for the ground-source heat pump and the boilers and air conditioning, which includes four programs.


Processes ◽  
2019 ◽  
Vol 7 (1) ◽  
pp. 27 ◽  
Author(s):  
Zhongfu Tan ◽  
Hongwu Guo ◽  
Hongyu Lin ◽  
Qingkun Tan ◽  
Shenbo Yang ◽  
...  

The energy consumed by buildings makes up a significant part of total social energy consumption. The energy use rate of the traditional cooling and heating unit is low. A distributed cooling, heating, and power (CHP) system can achieve cascade use of energy and reduce the long-distance transportation of energy. Along with the wide use of ground-source heat pumps and energy storage technology, the combined cooling, heating, and power (CCHP) system coupled with a ground-source heat pump and energy storage technology is increasingly being used. Firstly, we proposed the construction of a CCHP system driven by distributed energy resources (DERs) including three subsystems of an electricity subsystem, a CCHP subsystem and an auxiliary heating subsystem as the object of study in this paper. Besides, with the goals of reducing carbon emissions, increasing energy efficiency, and minimizing system cost, a constraint mechanism based on the DOM-PSO (dynamic object method/particle swarm optimization) algorithm was applied. Finally, taking Tianjin Eco-City as an example, we used the PSO algorithm to analyze the operating characteristics of the cold and power cogeneration system under the uncertainty of the wind power output. The simulation results show that the joint optimization mode operation strategy can balance the results of different optimization modes by increasing the robust coefficient of wind power. Of all scenarios examined, the CCHP system coupled with the ground-source heat pump and energy storage technology performed best.


Energies ◽  
2018 ◽  
Vol 11 (8) ◽  
pp. 1991 ◽  
Author(s):  
Suyang Zhou ◽  
Yuxuan Zhuang ◽  
Wei Gu ◽  
Zhi Wu

It is anticipated that the penetration of “Green-Energy” vehicles, including Electric Vehicle (EV), Fuel Cell Vehicle (FCV), and Natural Gas Vehicle (NGV) will keep increasing in next decades. The demand of refueling stations will correspondingly increase for refueling these “Green-Energy” vehicles. While such kinds of “Green-Energy” vehicles can provide both social and economic benefits, effective management of refueling various kinds of these vehicles is necessary to maintain vehicle users’ comfortabilities and refueling station’s return on investment. To tackle these problems, this paper proposes a novel energy management approach for hybrid refueling stations with EV chargers, Hydrogen pumps and gas pumps. Firstly, the detailed models of EV chargers, Hydrogen pumps with electrolyte and hydrogen tank, the gas pumps with gas tank, renewable resources, and battery energy storage systems are established. The forecasting methodologies for renewable energy, electricity price and the traffic flow are also presented to support the hybrid refueling station modeling and operation. Then, a management approach is adopted to manage the refueling various kinds of vehicles with considerations of the refueling station profitability. Finally, the proposed management approach is verified under four different kinds of tariffs- Economy-7, Economy-10, Flat-rate, and Real-Time Pricing (RTP), finding that the proposed management approach has the best performance under RTP tariff. The economic assessment of the Energy Storage System (ESS) is also performed. It is found that the ESS can make the saving up to $127 per day. Different sizes of gas storage tank are compared in the final section as well. The result shows that increasing the size of the tank does not bring attractive extra benefits with the consideration of the investment on enlarging the tank size.


2012 ◽  
Vol 512-515 ◽  
pp. 1125-1128
Author(s):  
Liang Chen ◽  
Chao Zhang ◽  
Yong Li

Analyze economically and make evaluation of several investment projects of ground-source heat pump combining relevant economic evaluation methods. Compare this system with other conventional air conditioning systems in economic input to provide suggestions for applying and promoting the ground-source heat pump air-conditioning system.


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