Renewable Energy Utilization Using Underground Energy Systems (Lecture Notes in Energy, 84)

✍ Scribed by Paweł Ocłoń

• Publisher: Springer
• Year: 2021
• Tongue: English
• Leaves: 182
• Category: Library

✦ Synopsis

This book discusses heat transfer in underground energy systems. It covers a wide range of important and practical topics including the modeling and optimization of underground power cable systems, modeling of thermal energy storage systems utilizing waste heat from PV panels cooling. Modeling of PV pannels with cooling.

While the performance of energy systems which utilize heat transfer in the ground is not yet fully understood, this book attempts to make sense of them. It provides mathematical modeling fundaments, as well as experimental investigation for underground energy systems. The book shows detailed examples, with solution procedures. The solutions are based on the Finite Element Method and the Finite Volume Method. The book allows the reader to perform a detailed design of various underground energy systems, as well as enables them to study the economic aspects and energy efficiency of underground energy systems. Therefore, this text is of interest to researchers, students, and lecturers alike.

✦ Table of Contents

Introduction
Contents
Symbols
1 Renewable Energy Sources in Poland
References
2 Storage of Thermal Energy in the Ground
2.1 Storage of Thermal Energy in the Tank Thermal Energy Storage Method
2.2 Storage of Thermal Energy in the Pit Thermal Energy Storage Method
2.3 Storage of Thermal Energy in the Borehole Thermal Energy Storage Method
2.4 Thermal Energy Storage in Reinforced Concrete Energy Piles
2.5 Storage of Thermal Energy in the Aquifer Thermal Energy Storage Method
2.6 Storage of Thermal Energy in the Cavity Thermal Energy Storage Method
References
3 Solar-Assisted Heat Pumps
3.1 Solar-Assisted Ground Source Heat Pumps
References
4 Zero-Emission Building Heating System Using Thermal Energy Accumulation in the Ground
4.1 Concept of the System
4.2 Components of the System
4.2.1 PVT Panels with a Sun-Tracking System
4.2.2 Demonstration Installation of a Zero-Emission System with Heat Accumulation in the Ground
5 Mathematical Modelling of the Resheat System
5.1 Thermal Properties of the Ground
5.1.1 Thermal Conductivity of the Ground—the Campbell-De Vries Model
5.1.2 Soil Specific Heat
5.2 Modelling the Building Heating System with Heat Accumulation in the Ground
5.2.1 Calculation of the Heat Pump Coefficient of Performance
5.2.2 A Mathematical Model of RESHeat System with Heat Accumulation in Two Underground Tanks
5.2.3 Discretization of Energy Equation—Finite Volume Method
5.2.4 General Energy Balance Equations in the Cartesian Coordinate System
5.2.5 Results and Discussion
5.2.6 Analysis of the Impact of the Ground Thermophysical Properties on the Performance of the Heat Accumulation System
References
6 Resheat System Optimization
6.1 PSO Method Algorithm
6.2 Calculation Results
References
7 Modelling Heat Transfer in the PV Panel Cooling System
7.1 Numerical Modelling of the Temperature Distribution of PVT Panels
7.1.1 Model of Heat Exchange in PVT Panels
7.1.2 PV Panel Energy Balance Equation—The Cartesian System
7.1.3 PV Panel Energy Balance Equation—The Cylindrical System
7.1.4 Discretization of the Coolant Energy Equation—Finite Difference Method
7.2 Analysis of the Cooling System Operation
References
8 Economic Analysis
9 Advantages of the Resheat System Over Traditional Solutions
10 Optimization of Underground Power Cable Systems
10.1 Optimization Problem
10.2 Electric-thermal Model of the Considered UTL
10.3 Thermal Conductivity of the Computational Subdomains
10.3.1 Thermal Conductivity of Cable Layers
10.3.2 Thermal Conductivity of the Soil and Backfill Materials
10.4 Optimization Algorithm
10.4.1 Jaya Algorithm
10.4.2 Modified Jaya Algorithm
10.5 Results and Discussion
10.5.1 Performance Analysis of the Modified Jaya Algorithm
10.5.2 Material Cost Optimization and Thermal Performance Analysis for a 400 kV ULT
10.5.3 Thermal Performance of Different Backfill Materials Under Variable Loading
10.5.4 Thermal Performance of the UPCS Under Various Soil and Backfill Thermal Conductivities
10.6 Outline
References
Summary and Conclusions