Discussion of Ground Source Heat Pump System Heat Balance in Severe Cold Area

2014 ◽  
Vol 507 ◽  
pp. 475-479
Author(s):  
Xin Dai ◽  
Lu Liu
Keyword(s):  
Heat Pump ◽  
Heat Balance ◽  
Comprehensive Analysis ◽  
Ground Source Heat Pump ◽  
Soil Factors ◽  
Pump System ◽  
Heat Pump System ◽  
Ground Source ◽  
Cold Area ◽  
Thermal Imbalance

This template comprehensive analysis of the causes of soil heat balance, heat balance of soil caused by the results, heat balance of soil factors influence, several domestic thermal imbalance of soil heat balance and common measures to solve the problem, for the future of the soil source heat pump system design for the constructive suggestion.

Study on Ground Source Heat Pump System of Combined Office and Residential Building in Hot Summer and Warm Winter Region

2013 ◽  
Vol 732-733 ◽  
pp. 564-570 ◽  
Author(s):  
Ying Ning Hu ◽  
Ya Zhao Liu ◽  
Jun Lin ◽  
Yan Wang
Keyword(s):  
Heat Pump ◽  
Heat Balance ◽  
System Performance ◽  
Residential Buildings ◽  
Residential Building ◽  
Ground Source Heat Pump ◽  
Pump System ◽  
Heat Pump System ◽  
Warm Winter ◽  
Ground Source

A ground source heat pump system of combined office and residential buildings in hot summer and warm winter region is introduced. The system performance is studied through the experiment, and the performance of underground heat balance is analyzed by TRNSYS. The results show the superiority and applicability of the ground source heat pump system.

Experimental Study on a Ground Source Heat Pump System in Cold Area

2011 ◽  
Vol 71-78 ◽  
pp. 2566-2571 ◽  
Author(s):  
Yi Liu ◽  
Ya Xuan Wang ◽  
Ya Ning Zhang
Keyword(s):  
Experimental Study ◽  
Heat Pump ◽  
Operation Time ◽  
Ground Source Heat Pump ◽  
Pump System ◽  
Heat Pump System ◽  
Ground Source ◽  
Cold Area

Experiment of a ground source heat pump system in cold area is studied in this paper. The results indicate that when the operation time increases to 100 hours, COPHP (COP of the heat pump) and COPSYS (COP of the system) decrease from 3.54 and 2.63 to 2.53 and 1.92, respectively. The average values of COPHP and COPSYS are 3.1 and 2.3, respectively. COPHP and COPSYS with 2 compressors at work are 11% and 12.2% higher than COPHP and COPSYS with 4 compressors at work, respectively. The average COPSYS with inverters is 6.42% higher than the COPSYS without inverters.

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

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.

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

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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