Heat Transfer Control Mechanism in a Vertical Ground Heat Exchanger: A Novel Approach | Chapter 4 | Fundamental Research and Application of Physical Science Vol. 5

 In order to be dramatic maximise the temperature of the ground heat exchanger (GHE), this affiliate presents a mathematical model of the performance of heat transfer between the liquid inside upright underground geothermal pipes and the encircling ground.  The GHE is a crucial component of the GHPS and plays a key act in utilizing the earth’s heat energy by trading heat with the ground on account of its real contact. Most benefits from the earth’s thermal strength can be accomplished when the GHE is well-designed, containing in terms of arrangement, installation position, borehole heat exchanger capacity, and depiction factors, that ensure that the GHE’s profit temperature reaches the ground temperature.The heat transfer machine between the flowing water inside the vertical U-hose pipe and the surrounding sediments is as follows: through broadcast, the heat transfers from the grout to the external pipe wall and from the exposed to the inner pipe obstruction, and by convection from the central pipe wall to the flowing water. The model was implemented in MATLAB utilizing an ordinary differential equating (ODE) solver. The results reveal that the satisfactory range of the water velocity for Oakland University’s GHE was middle from two points 0.35 and , which guaranteed that the heat pump whole delivered the correct temperature to specify the Human Health Building (HHB) with a easy temperature however the season. The suggested water speed ranges in vertical alone U-tube pipes with diameters of De , De , and De  are 'tween 0.33 and  to , and 0.38 to , respectively. In the future, the study expects controlling this nonlinear structure at several functional points, controlling each point individually, and switching middle from two points these controllers using the alone controller block to control it in a more excellent manner along allure trajectory.

Author(s) Details:

Khaled Salhein,
Department of Electrical and Computer Engineering, School of Engineering and Computer Science, Oakland University, Rochester, MI 48306, USA.

C. J. Kobus,
Department of Electrical and Computer Engineering, School of Engineering and Computer Science, Oakland University, Rochester, MI 48306, USA.

Mohamed Zohdy,
Department of Electrical and Computer Engineering, School of Engineering and Computer Science, Oakland University, Rochester, MI 48306, USA.

Please see the link here: https://stm.bookpi.org/FRAPS-V5/article/view/10647