In the name of god

energy and exergy analysis of

geothermal heat pump

Supervisor : Dr. Ali Sarreshtehdari

Student : Mohammad Kalami

DirectoryGeothermal Heat Pump

introduction

Geothermal energy

Exergy analysis

introduction

Limitation of fossil fuel

No carbon emissions

Relatively cheaply

Control Temperature and humidity

4

v

Geothermal energy

Magma

Use of geothermal energy

Heating (buildings,greenhouse,melting of snow,...)

Power plant

5

6

47°

42°37°

42°

57°52°

62°

67°

72°

Range of temperatures in different regions of the United States

Geothermal heat pump

0° 30° 60° 70° 80°

Depth

6ft

13ft

20ft

26ft

7

HeatHeat

Up to 80% of the cooling and heating needs of a

building can readily come free from the constant

temperature of the earth. We’re just moving it.

Heatingcooling

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Heating and cooling systems

Ground Loops

Heat Pumps

Heat Distribution Systems

9

Horizontal vertical

closed Loop Geothermal Systems

10

Ground Loops

Open Loop Geothermal System

11

12

Heat Pumps

13

Heat Distribution Systems

Air

Water-to water unit

Cold

warm

Hotwater tank

Water to air distribution system

Water to water distribution systems

1

2

3

Exergy analysis of geothermal heat pump

Exergy efficiency η=

Exergy loss coefficient d =

Exergy loss ratio λ =

Thermodynamic perfect degree εcom =

Exergy loss ΔEox = Ʃ Eo xin - Ʃ Eo xout

- Qo (1 - ) + Woin

14

7 8

= ( - ) + (1- ) =

= =

=

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[1] Egg J., Clark H.B.;"Geothermal HVAC,Green Heating and Cooling", Copyright by The McGraw-Hill Companies, 2011,United States

[2] Fan R., Jiang Y., Yao Y., Shiming D., Ma Z.;" A study on the performance of a geothermal heat exchanger under coupled heat conduction and groundwater advection", Energy 32,2007.

مدل سازي و بهينه سازي فني و اقتصادي سپهر و نیرومند، بهزاد؛"،صنایع [3] .1386پمپ گرمايي با مبدل زميني افقي"،ششمین همایش ملی انرژی،

REFERENCES

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Thank you for your attention

The finest steel has to go through the hottest fire...