A model of groundwater seepage and heat transfer for single-well ground source heat pump systems
نویسندگان
چکیده
In China, for the limitation of land, many buildings intending to utilize ground source heat pump systems install “single-well” systems, which drill only one well for both the pumping and reinjection of the groundwater. A model of groundwater seepage and heat transfer for single-well ground source heat pump systems has been established and validated against the experiment conducted in Denmark. In a unitary homogenous confined aquifer, the analytic seepage solution has been derived. Moreover, equations of steady drawdown, seepage velocity, quasi-steady time and hydraulic effective radius are achieved. Results show that groundwater seepage can achieve steady state quickly. In addition, the thermal performance of groundwater and aquifer on a case study in Beijing, China has been simulated. The simulation indicates that the large thermal effective radius (far to 40 m), which is much larger than that of ground-coupled heat pump, makes one single-well accommodate large space heating and cooling loads. 2011 Elsevier Ltd. All rights reserved.
منابع مشابه
Determining the optimal size of a ground source heat pump within an air-conditioning system with economic and emission considerations
One of the most challenging issues in modern-day building energy management involves equipping the buildings with more energy efficient facilities. In this paper, a hybrid system for cooling/heating for a residential building is developed and optimized. The system consists of a ground source heat pump (GSHP) as well as an electric chiller (EC) and boiler. The model is implemented in MATLAB ...
متن کامل01 The conceptual design of the photovoltaic solar thermal collector hybrid system and the ground source heat pump to provide electricity, heating and cooling a residential building focusing on technical, economic and environmental parameters.
This paper attempts to present and compare four solar assisted ground source heat pump combined systems with series and parallel layouts and direct and indirect heat exchange in Zahedan in order to supply part of the electricity demand for equipment and selling surplus electricity to the grid as a source of project financing and revenue generation for residents, moreover, fulfill the region's n...
متن کاملAssessment and Deployment of Ground Source Heat Pump for Air Pollution Reduction in Tehran, Iran
The use of renewable energies, especially in metropolises has led to a reduction in environmental pollution and greater access to clean, renewable and sustainable energy. This paper evaluates the effectiveness of a national plan adopted by the Tehran city council for reducing air pollutions. This plan is designed to increase the share of renewable energies in residential buildings. This study a...
متن کاملSimulation and prediction of conditions for effective development of shallow geothermal energy
A geothermal heat exchanger system is mathematically quantified, and simulated and modeled to understand heat transfixion and strata deformation caused by groundwater exploitation via groundwater heat pump systems. This is done to determine the requirements and parameters governing the development of shallow geothermal energy in an efficient and safe manner. The model takes into account the gro...
متن کاملHeat Transfer Modeling of the Ground Heat Exchangers for the Ground-Coupled Heat Pump Systems
Ground-coupled heat pump (GCHP) systems have been gaining increasing popularity for space air conditioning in buildings due to their reduced energy and maintenance costs. The efficiency of GCHP systems is inherently higher than that of the traditional options because it utilizes the ground which maintains a relatively stable temperature all the year round as a heat source/sink. Compared with tr...
متن کامل