Impact of Boundary Conditions on a Groundwater Heat Pump System Design in a Shallow and Thin Aquifer near the River

Shu, Longcang; Wen, Zhang; Tao, Yuezan; Liu, Pei‐Gui

doi:10.3390/su9050797

Cited by 3 publications

(4 citation statements)

References 29 publications

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“…The composition of the envelope wall can be seen in Figure 2 and Table 1. Results related to similar issues have been published in recent years in [30][31][32][33].…”

Section: Nosupporting

confidence: 63%

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The Influence of the Initial Condition in the Transient Thermal Field Simulation Inside a Wall

Zozulák¹,

Vertaľ²,

Katunský³

2019

Buildings

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The envelope structures of buildings are exposed to heat-humidity conditions. The heat and humidity flow through these structures depends on the boundary conditions of the indoor and outdoor environments. This paper shows different initial conditions for the determination of temperature spread. The aim is to bring certain results of temperature calculated considering the initial conditions. When temperature changes, heat flow also rapidly changes. In certain specific cases, it is necessary to consider the initial conditions of temperature—for example; when transient energy simulations of real buildings are carried out. The reasons as to why it is necessary to consider the initial conditions, are shown in the examples of one-layer assemblies. The test walls exposed to the transient hygrothermal conditions are placed in the outdoor test cell. The cell has a stable temperature and relative humidity, and outdoor weather conditions change. The measured data on these walls and the calculated values of the temperatures in the wall structure, according to the different initial conditions, are compared. The average difference of the mean by the simulation and the measured values is significant. For a simulation time of about five days, the initial condition for calculating the temperature in the center of the masonry is necessary.

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“…The composition of the envelope wall can be seen in Figure 2 and Table 1. Results related to similar issues have been published in recent years in [30][31][32][33].…”

Section: Nosupporting

confidence: 63%

“…The composition of the envelope wall can be seen in Figure 2 and Table 1. Results related to similar issues have been published in recent years in [30][31][32][33]. The experiment was conducted on the (AAC) autoclaved aerated concrete and envelope structure from ceramic brick.…”

Section: Nomentioning

confidence: 69%

The Influence of the Initial Condition in the Transient Thermal Field Simulation Inside a Wall

Zozulák¹,

Vertaľ²,

Katunský³

2019

Buildings

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“…The response surface method (RSM), a statistical approach has been discussed by authors [61] with the help of the heat transfer and energy balance equation, mathematical models, EAHE (Earth to air heat exchanger) model considering three influential variables in the context of heating and cooling of buildings. Shu et al [62] investigated how the groundwater flow for geothermal development is being affected by boundary conditions in hilly areas. FEFLOW, a 3D heat water finite element based model was developed to study how boundary conditions affect the temperature fields and hydrodynamics of aquifers.…”

Section: Numerical Approachmentioning

confidence: 99%

Potential and Future Prospects of Geothermal Energy in Space Conditioning of Buildings: India and Worldwide Review

et al. 2020

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This paper presents modern trends in geothermal energy utilization, mainly focusing on ground source heat (GSH) pumps for space conditioning in buildings. This paper focuses on India along with a general review of studies around the world. Space conditioning of a building contributes to about 40–50% of the total energy consumed in buildings and has an adverse impact on the environment and human health. The India Cooling Action Plan (ICAP) estimates that the demand for electricity for heating and cooling of buildings will increase by over 700% in India at current levels by 2047 with an additional 800 GW of power generation capacity needed just to meet heating and cooling needs by 2050, of which about 70% is required for the residential sector only. It further intensifies as the demand for peak electric load sharply increases in summer because of the extensive use of building air conditioning systems. Researchers across the globe have tried different cooling systems and found that some systems can offer a certain amount of energy-efficient performance, and also occupant comfort. Therefore, this article examines the geothermal potential in buildings for space conditioning by critically reviewing experimental and numerical studies along with the future prospects of GSH pumps.

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“…In addition, the boundary and initial conditions are more important for the hydrodynamic field and temperature field. Therefore, it is necessary to study the strategies for effective utilization of geothermal energy in shallow aquifers, and the importance of boundary conditions has been researched for mass and energy transfer solutions Malecha, 2017a,2017b;Malecha and Malecha, 2014;Shu et al, 2017). Shallow geothermal resource exploitation not only has hydraulic and thermal effects on the environment but also induces physicochemical changes that can compromise the operability of installations (García-Gil et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Geothermal dynamic constraints of groundwater source heat pump system in shallow aquifers

et al. 2023

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Due to the temperature of shallow aquifers being affected by atmospheric temperature, groundwater source heat pumps (GWSHPs) become unstable and the operation efficiency of GWSHP is constrained. In the study, the coupling numerical simulation model of the groundwater flow field and temperature field is established based on the continuous monitoring results in an actual experimental site, and the water and thermal migration of shallow aquifer is simulated under the influence of the atmospheric environment. The influence of the dynamic change in ground temperature is analyzed on a GWSHP. The results indicated that the temperature of the shallow aquifer is affected by the external temperature, and the recharge temperature in the summer cooling period was 33°C, and that in the winter heating period was 6°C in the actual site, to avoid the occurrence of thermal penetration when there is a gap between the actual situation and the design situation, the single cooler can balance the insufficient cooling capacity in summer under the most unfavorable situation. The research results can also provide a reference for the development and utilization of geothermal energy resources in shallow aquifers.

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Impact of Boundary Conditions on a Groundwater Heat Pump System Design in a Shallow and Thin Aquifer near the River

Cited by 3 publications

References 29 publications

The Influence of the Initial Condition in the Transient Thermal Field Simulation Inside a Wall

The Influence of the Initial Condition in the Transient Thermal Field Simulation Inside a Wall

Potential and Future Prospects of Geothermal Energy in Space Conditioning of Buildings: India and Worldwide Review

Geothermal dynamic constraints of groundwater source heat pump system in shallow aquifers

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