Energy Efficiency Testing of Ground Source Heat Pump System and Discussion of Fault Diagnosis

Baoji “Shigu • Tian Xi Tai”, “Shigu • Sun City” ground source heat pump energy station system is an important energy supply project in Shigu. In this paper, we systematically introduce the design of green building and ground-source heat pump system, points of construction process, pre-cooling station technology, EMC economic model in detail. In addition, the ground source heat pump system of the project was tested in the field to analyze and evaluate the running performance of the system. We hope our research can provide some reference and help to the practitioners.

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Impact of ventilation rates on indoor thermal comfort and energy efficiency of ground-source heat pump system

Sustainable Cities and Society ◽

10.1016/j.scs.2017.11.014 ◽

2018 ◽

Vol 37 ◽

pp. 154-163 ◽

Cited By ~ 44

Author(s):

Yelin Deng ◽

Zhuangbo Feng ◽

Jian Fang ◽

Shi-Jie Cao

Keyword(s):

Energy Efficiency ◽

Thermal Comfort ◽

Heat Pump ◽

Ground Source Heat Pump ◽

Pump System ◽

Heat Pump System ◽

Indoor Thermal Comfort ◽

Ground Source ◽

Ventilation Rates

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A Simplified Ground Thermal Response Model for Analyzing Solar-Assisted Ground Source Heat Pump Systems

10.32920/ryerson.14638875.v1 ◽

2021 ◽

Author(s):

Jamie P. Fine ◽

Hiep V. Nguyen ◽

Jacob Friedman ◽

Wey H. Leong ◽

Seth B. Dworkin

Keyword(s):

Heat Pump ◽

Lifetime Cost ◽

Array Size ◽

Solar Array ◽

System Failure ◽

Ground Source Heat Pump ◽

Pump System ◽

Heat Pump System ◽

Ground Source ◽

Thermal Imbalance

Ground source heat pump systems that are installed in areas with heating or cooling dominant seasons, or in buildings with utilization characteristics that lead to a disparity in demand, often encounter challenges related to ground thermal imbalance. This imbalance can lead to long-term ground temperature changes and may cause premature system failure. This paper focuses on combining a ground source heat pump system with a solar thermal array, with the goal of eliminating the effect of ground thermal imbalance, and minimizing system lifetime cost. A thermal mass ground heat transfer model is combined with a time-stepping model to analyze the system for a variety of solar array sizes. The details associated with this modelling technique are presented, and case studies are provided to illustrate the results of the calculations for three different buildings. It is shown that increasing the solar array size can offset ground thermal imbalances, but increasing the array size also results in a larger initial system cost. An economic analysis is then carried out to determine the system lifetime cost as a function of this solar array size, and an optimal array size from an economic perspective was found. The result of the study shows that hybridizing a ground source heat pump system with a solar array produces a viable system from a technical and economic standpoint, can be used to avoid premature system failure, and can reduce system lifetime cost.

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Parametric Study of Ground Source Heat Pump System for Hot and Humid Climate

Volume 4: Energy Systems Analysis, Thermodynamics and Sustainability; Combustion Science and Engineering; Nanoengineering for Energy, Parts A and B ◽

10.1115/imece2011-63681 ◽

2011 ◽

Cited By ~ 1

Author(s):

Jiang Zhu ◽

Yong Tao

Keyword(s):

Heat Pump ◽

Pump Energy ◽

Residential Building ◽

Simulation Software ◽

Ground Source Heat Pump ◽

Humid Climate ◽

Pump System ◽

Heat Pump System ◽

Ground Source ◽

Future Work

The U-tube sizes and varied thermal conductivity with different grout materials are studied based on the benchmark residential building in Hot-humid Pensacola, Florida. In this study, the benchmark building is metered and the data is used to validate the simulation model. And a list of comparative simulation cases with varied parameter value are simulated to study the importance of pipe size and grout to the ground source heat pump energy consumption. The simulation software TRNSYS [1] is employed to fulfill this task. The results show the preliminary energy saving based on varied parameters. Future work needs to be conducted for the cost analysis, include the installation cost from contractor and materials cost.

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A Simplified Ground Thermal Response Model for Analyzing Solar-Assisted Ground Source Heat Pump Systems

10.32920/ryerson.14638875 ◽

2021 ◽

Author(s):

Jamie P. Fine ◽

Hiep V. Nguyen ◽

Jacob Friedman ◽

Wey H. Leong ◽

Seth B. Dworkin

Keyword(s):

Heat Pump ◽

Lifetime Cost ◽

Array Size ◽

Solar Array ◽

System Failure ◽

Ground Source Heat Pump ◽

Pump System ◽

Heat Pump System ◽

Ground Source ◽

Thermal Imbalance

Ground source heat pump systems that are installed in areas with heating or cooling dominant seasons, or in buildings with utilization characteristics that lead to a disparity in demand, often encounter challenges related to ground thermal imbalance. This imbalance can lead to long-term ground temperature changes and may cause premature system failure. This paper focuses on combining a ground source heat pump system with a solar thermal array, with the goal of eliminating the effect of ground thermal imbalance, and minimizing system lifetime cost. A thermal mass ground heat transfer model is combined with a time-stepping model to analyze the system for a variety of solar array sizes. The details associated with this modelling technique are presented, and case studies are provided to illustrate the results of the calculations for three different buildings. It is shown that increasing the solar array size can offset ground thermal imbalances, but increasing the array size also results in a larger initial system cost. An economic analysis is then carried out to determine the system lifetime cost as a function of this solar array size, and an optimal array size from an economic perspective was found. The result of the study shows that hybridizing a ground source heat pump system with a solar array produces a viable system from a technical and economic standpoint, can be used to avoid premature system failure, and can reduce system lifetime cost.

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Study on energy efficiency evaluation and influencing factors of ground source thermal energy management system operation

Thermal Science ◽

10.2298/tsci191208123f ◽

2020 ◽

Vol 24 (5 Part B) ◽

pp. 3319-3227

Author(s):

Chun Fu ◽

Xiaoxia Zhao

Keyword(s):

Energy Efficiency ◽

Heat Pump ◽

Pump Energy ◽

Ground Source Heat Pump ◽

Ground Source ◽

Energy Efficiency Evaluation ◽

Set Up ◽

Feasible Solutions ◽

Testing Instruments ◽

The Impact

The paper combines the testing work of ground source heat pump systems, discusses the installation, use methods and test errors of various testing instruments, combines the field test experience, gives the main points of ground source heat pump energy efficiency testing, and according to the problems encountered during the test. The faults with high frequency are analyzed, and the methods of fault diagnosis and troubleshooting are given. This paper uses the ground-source heat pump experimental platform to set up multiple sets of experimental schemes to study the impact of factors such as pipe diameter, single and double U, and flow rate on system energy efficiency. At the same time, it combines engineering cases to ?large flow small temperature difference?, ?imbalance? phenomenon is analyzed, and feasible solutions and suggestions are given. By analyzing the energy efficiency and benefits of actual engineering of multiple ground source heat pump systems, the paper concludes that ground source heat pump systems have a wider application prospect in a certain area of Hubei.

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