Evaluation of thermal imbalance of ground source heat pump systems in residential buildings in China

2020 ◽  
Vol 13 (3) ◽  
pp. 585-598 ◽  
Author(s):  
Mingyang Qian ◽  
Da Yan ◽  
Jingjing An ◽  
Tianzhen Hong ◽  
Jeffrey D. Spitler
Keyword(s):  
Heat Pump ◽  
Residential Buildings ◽  
Ground Source Heat Pump ◽  
Ground Source ◽  
Thermal Imbalance

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.

Advances in Ground Source Heat Pump Systems Applied in Most Areas of China: A Review

2014 ◽  
Vol 716-717 ◽  
pp. 805-808 ◽  
Author(s):  
Xin Wang ◽  
Hong Liu ◽  
Di Di Xue
Keyword(s):  
Heat Pump ◽  
Heat Pumps ◽  
Ground Heat Exchanger ◽  
Ground Source Heat Pump ◽  
Heat Accumulation ◽  
Ground Source ◽  
Heating Load ◽  
The Difference ◽  
Thermal Imbalance ◽  
System Operating

Because of the advantage on energy saving and environmental sustainable development, the ground source heat pump (GSHP) system has received the widespread attention and application in recent years.However,the difference between cooling load in summer and heating load in winter is obvious in most areas of our country,so it can cause the heat accumulation around ground heat exchanger,which will result in degradation of system performance and increment of system operating costs.To solve the problem of thermal imbalance,it is necessary to research the soil temperature field around the buried pipes in the process of system operation.This paper begins with a review of the studies about the ground source heat pump systems.This is followed by a review of various methods of enhancing the performance of heat pumps based on the thermal imbalance.And then,this paper shows some studies about ground source heat pump systems based on the groundwater seepage.

Potential of ground source heat pump systems in cooling-dominated environments: Residential buildings

Geothermics ◽  
2015 ◽  
Vol 57 ◽  
pp. 104-110 ◽  
Author(s):  
Mohamad Kharseh ◽  
Mohammed Al-Khawaja ◽  
Muhannad T. Suleiman
Keyword(s):  
Heat Pump ◽  
Residential Buildings ◽  
Ground Source Heat Pump ◽  
Ground Source

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.

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.

Evaluation of Ground Source Heat Pump Energy, Demand, and Greenhouse Potential in Colorado Residential Buildings

2010 ◽  
Author(s):  
Daniel Studer ◽  
Moncef Krarti
Keyword(s):  
Heat Pump ◽  
Energy Demand ◽  
Residential Buildings ◽  
Pump Energy ◽  
Hvac Systems ◽  
Heat Pumps ◽  
Ground Source Heat Pump ◽  
Ground Source Heat Pumps ◽  
Vertical Well ◽  
Ground Source

This paper summarizes the results of a detailed energy analysis carried out for a typical Colorado residence using three different HVAC systems for 10 distinct locations in Colorado. The HVAC systems considered in the analysis include: • 78% efficient furnace with a 13 SEER air conditioner; • Vertical well ground source heat pump with a heating COP of 3.5 and a cooling EER of 17.1; • Slinky ground source heat pump with a heating COP of 3.5 and a cooling EER of 17.1. The results of the analysis indicate that relative to the conventional systems, ground source heat pumps (GSHPs) offer several benefits including lower annual energy costs, electrical peak demand, and carbon emissions. However, GSHPs use more electrical energy use. Specifically, it was found that relative to a 78 AFUE furnace / 13 SEER AC system, in all locations both GSHPs, vertical well and slinky, show on average a 41.2% increase in electricity use, a 10% decrease in energy cost, a 4.5% decrease in CO2 emissions, and a 16.8% average decrease in peak summer electric demand.

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