Geothermal Heat Pump

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  • Topic: Geothermal power, Geothermal heating, Geothermal heat pump
  • Pages : 13 (2694 words )
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  • Published : April 18, 2008
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Project – I
DESIGN OF GEOTHERMAL HEAT PUMP

A Project Report Submitted By
Peter Galimutti (2474762)
Neeraj Pastakia (2462895)
Balasubrahmanyam Vanum (2474858)
(MCE 622: Energy Conversion)
MASTER OF SCIENCE IN
MECHANICAL ENGINEERING
Fall 07

Under the esteemed guidance of
Dr.Earnest N.Poulous
(Associate Professor)

DEPARTMENT OF MECHANICAL ENGINEERING
FENN COLLEGE OF ENGINEERING
CLEVELAND STATE UNIVERSITY

ABSTRACT
To address energy problems in the very near future, especially in the area of heating and air-conditioning of building structures, it is proposed that a geothermal system be designed with emphasis on the residential application of heating and cooling. The proposed design will be using a single central reservoir cylindrical in shape which will be stored approximately 50 feet underground. The transfer of heat to or from the central reservoir will be achieved through a piping system connected to a special Freon evaporator installed above around in conjunction with glycol working fluid media. A directional valve will be provided to reverse the movement of the refrigerant to create the heating and cooling cycles.

The proposed geothermal energy system is basically a ground heat pump intended to replace currently used piping systems buried in extension ground trenches. The proposed underground central reservoir system will reduce the amount of excavation required by currently used systems, ground surface areas, and thereby the overall installation costs, and reduces the potential for an environmental mishap due to rupturing of the piping.

In this project software called SINDA/FLUINT has been used to design a geothermal system. SINDA is primarily intended for designing and analyzing thermal systems represented in electric analog, lumped parameter form. This software can solve both finite difference and finite element equations. The FLUINT is the most advanced one dimensional thermal/hydraulic code available for solving arbitrary fluid flow networks without presuming the application.

TABLE OF CONTENTS

ABSTRACT . . . . . . . . . . . . . . . . . 2

I. INTRODUCTION . . . . . . . . . . . . . . 4

II. Technical Report . . . . . . . . . . . . . 8

III. Calculations and SINDA/FLUINT Program . . . . . . 13

IV. Results and discussions . . . . . . . . . . 23

V. Conclusion . . . . . . . . . . . . . . 28

VI. References . . . . . . . . . . . . . . 31

________________________________________
LIST OF FIGURES
Figure Page

1.Geothermal Reservoir . . . . . . . . . . . 5
2.Space/District heating. . . . . . . . . . . 6
3.Power Generation. . . . . . . . . . . . . 7
4.Heat Pump in winter . . . . . . . . . . . 10
5.Heat Pump in summer. . . . . . . . . . . . . 10 6.Schematic Diagram of proposed Geothermal system . . . . . 11 7.Thermodynamic Cycle . . . . . . . . . . . . 12 8.Top view of physical model of GHP . . . . . . . 14 9.R-C Network of the physical model . . . . . . . 15

INTRODUCTION

I. Introduction

Geothermal Energy

Geothermal power is energy generated by heat stored beneath the Earth's surface.The heat from the earth's core continuously flows outward. It transfers (conducts) to the surrounding layer of rock, the mantle. When temperatures and pressures become high enough, some mantle rock melts, becoming magma. Then, because it is lighter (less dense) than the surrounding rock, the magma rises (convects), moving slowly up toward the earth's crust, carrying...
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