MCS 022: GROUND HEAT EXCHANGER LOOK-UP TABLES · 2014. 3. 13. · MCS 022: GROUND HEAT EXCHANGER LOOK-UP TABLES SUPPLEMENTARY MATERIAL TO MIS 3005 Issue 1.0 1! Issue 1.0 (02/09/2011)

Issue 1.0 (02/09/2011)

!

This Microgeneration Installation Standard is the property of Department of Energy and Climate Change (DECC), 3 Whitehall Place, London,SW1A 2HH.© DECC 2008

MCS 022: GROUND HEAT EXCHANGER LOOK-UP TABLES

SUPPLEMENTARY MATERIAL TO MIS 3005

Issue 1.0

1

!

Issue 1.0 (02/09/2011)

This standard has been approved by the Steering Group of the MCS.

This standard was prepared by the MCS Working Group 6 ‘Heat Pumps’.

REVISION OF MICROGENERATION INSTALLATION STANDARDS Microgeneration Installation Standards will be revised by issue of revised editions or a m e n d m e n t s . D e t a i l s w i l l b e p o s t e d o n t h e w e b s i t e a t www.microgenerationcertification.org

Technical or other changes which affect the requirements for the approval or certification of the product or service will result in a new issue. Minor or administrative changes (e.g. corrections of spelling and typographical errors, changes to address and copyright details, the addition of notes for clarification etc.) may be made as amendments.

The issue number will be given in decimal format with the integer part giving the issue number and the fractional part giving the number of amendments (e.g. Issue 3.2 indicates that the document is at Issue 3 with 2 amendments).

Users of this Standard should ensure that they possess the latest issue and all amendments.

2

http://www.microgenerationcertification.org

http://www.microgenerationcertification.org

Issue 1.0 (02/09/2011)

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.......................................................................................................................................1. BOREHOLE HEAT EXCHANGERS 41200 FLEQ run hours 51800 FLEQ run hours 62400 FLEQ run hours 73000 FLEQ run hours 83600 FLEQ run hours 9

2. HORIZONTAL GROUND HEAT EXCHANGERS 101200 FLEQ run hours 111800 FLEQ run hours 122400 FLEQ run hours 133000 FLEQ run hours 143600 FLEQ run hours 15

3. SLINKY GROUND HEAT EXCHANGERS 161200 FLEQ run hours 171800 FLEQ run hours 182400 FLEQ run hours 193000 FLEQ run hours 203600 FLEQ run hours 21

4. AMENDMENTS ISSUED SINCE PUBLICATION 22

TABLE OF CONTENTS

3

Issue 1.0 (02/09/2011)

1. BOREHOLE HEAT EXCHANGERS

4

Issue 1.0 (02/09/2011)

5.0

4.0

3.0

2.0

1.0

Ave

rage

gro

un

d t

he

rmal

co

nd

uct

ivit

y (

W/m

/K)

Mean ground temperature (oC)6.0 7.0 8.0 9.0 10.0 11.0 12.0 13.0 14.0 15.0

NE

Sco

tland

NW

Sco

tland

E S

cotla

nd

Bor

ders

W S

cotla

nd

Nor

ther

n Ire

land

Nor

th-e

aste

rnN

orth

-wes

tern

Mid

land

sW

ales

E P

enni

nes

W P

enni

nes

Eas

t Ang

liaS

outh

-eas

tern

Sou

ther

n

Sev

ern

Valle

y

Sou

th-w

este

rn

Tham

es V

alle

y

Mean annual air temperature for UK regions (oC)

21

37

33

28

24

41

37

32

27

47

42

36

30

52

47

40

33

57

51

43

36

62

56

47

39

67

61

51

42

72

65

55

45

77

69

59

Maximum power to be extracted per unit length of borehole heat exchanger (W/m) with 1200 FLEQ run hours

Conditions for use:Heat extraction only (inc. hot water)

6m minimum borehole spacing. Only valid for boreholes arranged in a line; not applicable for a large number of systems in a small areaTable created assuming: 130mm borehole diameter; single U-tube; 32mm OD SDR-11, PE100 pipe with thermal conductivity = 0.420W/m/K; 52mm pipe centre-pipe centre

shank spacing; 25% Mono Ethylene Gylcol thermal transfer fluid; Re > 2500 in the borehole active elements; thermally enhanced grout with thermal conductivity = 2.4W/m/KAssumptions result in borehole thermal resistance = 0.1 m.K/W at 12oC mean ground temp. and 2.5W/m/K average ground thermal conductivity

Re

com

me

nd

ed

val

ue

s an

d r

an

ges

of

the

rmal

co

nd

uct

ivit

y

for

dif

fere

nt

rock

typ

es

(W/m

/K)

48

83

74

63

0.5

Cla

y/si

lt (d

ry)

3.4

Gra

nite

0.4

Sand

(dr

y)

2.4

Sand

(w

ater

-sat

urat

ed)

Cla

y/si

lt (w

ater

-sat

urat

ed)

1.7

Cla

ysto

ne, s

iltst

one

(inc.

slat

es a

nd s

hale

s)

2.2

Sand

ston

e

2.3

5

Issue 1.0 (02/09/2011)

5.0

4.0

3.0

2.0

1.0

Ave

rage

gro

un

d t

he

rmal

co

nd

uct

ivit

y (

W/m

/K)


NE

Sco

tland

NW

Sco

tland

E S

cotla

nd

Bor

ders

W S

cotla

nd

Nor

ther

n Ire

land

Nor

th-e

aste

rnN

orth

-wes

tern

Mid

land

sW

ales

E P

enni

nes

W P

enni

nes

Eas

t Ang

liaS

outh

-eas

tern

Sou

ther

n

Sev

ern

Valle

y

Sou

th-w

este

rn

Tham

es V

alle

y


18

34

30

25

21

38

34

28

24

43

38

32

26

48

42

35

29

52

47

39

31

57

51

42

34

62

55

46

36

67

59

49

39

72

63

53

Re

com

me

nd

ed

val

ue

s an

d r

an

ges

of

the

rmal

co

nd

uct

ivit

y

for

dif

fere

nt

rock

typ

es

(W/m

/K)

41

77

68

56

0.5

Cla

y/si

lt (d

ry)

3.4

Gra

nite

0.4

Sand

(dr

y)

2.4

Sand

(w

ater

-sat

urat

ed)

Cla

y/si

lt (w

ater

-sat

urat

ed)

1.7

Cla

ysto

ne, s

iltst

one

(inc.

slat

es a

nd s

hale

s)

2.2

Sand

ston

e

2.3

6





Issue 1.0 (02/09/2011)

5.0

4.0

3.0

2.0

1.0

Ave

rage

gro

un

d t

he

rmal

co

nd

uct

ivit

y (

W/m

/K)


NE

Sco

tland

NW

Sco

tland

E S

cotla

nd

Bor

ders

W S

cotla

nd

Nor

ther

n Ire

land

Nor

th-e

aste

rnN

orth

-wes

tern

Mid

land

sW

ales

E P

enni

nes

W P

enni

nes

Eas

t Ang

liaS

outh

-eas

tern

Sou

ther

n

Sev

ern

Valle

y

Sou

th-w

este

rn

Tham

es V

alle

y


16

31

27

22

18

35

31

25

21

40

35

29

23

44

39

32

25

48

43

35

27

53

46

38

30

57

50

41

32

62

54

44

34

66

58

47

Re

com

me

nd

ed

val

ue

s an

d r

an

ges

of

the

rmal

co

nd

uct

ivit

y

for

dif

fere

nt

rock

typ

es

(W/m

/K)

37

71

62

51

0.5

Cla

y/si

lt (d

ry)

3.4

Gra

nite

0.4

Sand

(dr

y)

2.4

Sand

(w

ater

-sat

urat

ed)

Cla

y/si

lt (w

ater

-sat

urat

ed)

1.7

Cla

ysto

ne, s

iltst

one

(inc.

slat

es a

nd s

hale

s)

2.2

Sand

ston

e

2.3

7





Issue 1.0 (02/09/2011)

5.0

4.0

3.0

2.0

1.0

Ave

rage

gro

un

d t

he

rmal

co

nd

uct

ivit

y (

W/m

/K)


NE

Sco

tland

NW

Sco

tland

E S

cotla

nd

Bor

ders

W S

cotla

nd

Nor

ther

n Ire

land

Nor

th-e

aste

rnN

orth

-wes

tern

Mid

land

sW

ales

E P

enni

nes

W P

enni

nes

Eas

t Ang

liaS

outh

-eas

tern

Sou

ther

n

Sev

ern

Valle

y

Sou

th-w

este

rn

Tham

es V

alle

y


14

29

25

20

16

32

28

23

18

37

32

26

21

41

36

29

23

45

39

32

25

49

43

35

27

53

46

38

29

58

50

40

31

62

53

43

Re

com

me

nd

ed

val

ue

s an

d r

an

ges

of

the

rmal

co

nd

uct

ivit

y

for

dif

fere

nt

rock

typ

es

(W/m

/K)

33

66

57

46

0.5

Cla

y/si

lt (d

ry)

3.4

Gra

nite

0.4

Sand

(dr

y)

2.4

Sand

(w

ater

-sat

urat

ed)

Cla

y/si

lt (w

ater

-sat

urat

ed)

1.7

Cla

ysto

ne, s

iltst

one

(inc.

slat

es a

nd s

hale

s)

2.2

Sand

ston

e

2.3

8





Issue 1.0 (02/09/2011)

5.0

4.0

3.0

2.0

1.0

Ave

rage

gro

un

d t

he

rmal

co

nd

uct

ivit

y (

W/m

/K)


NE

Sco

tland

NW

Sco

tland

E S

cotla

nd

Bor

ders

W S

cotla

nd

Nor

ther

n Ire

land

Nor

th-e

aste

rnN

orth

-wes

tern

Mid

land

sW

ales

E P

enni

nes

W P

enni

nes

Eas

t Ang

liaS

outh

-eas

tern

Sou

ther

n

Sev

ern

Valle

y

Sou

th-w

este

rn

Tham

es V

alle

y


14

29

25

20

16

32

28

23

18

37

32

26

21

41

35

29

22

45

39

32

24

49

43

34

26

53

46

37

28

57

49

40

30

61

53

43

Re

com

me

nd

ed

val

ue

s an

d r

an

ges

of

the

rmal

co

nd

uct

ivit

y

for

dif

fere

nt

rock

typ

es

(W/m

/K)

32

66

57

46

0.5

Cla

y/si

lt (d

ry)

3.4

Gra

nite

0.4

Sand

(dr

y)

2.4

Sand

(w

ater

-sat

urat

ed)

Cla

y/si

lt (w

ater

-sat

urat

ed)

1.7

Cla

ysto

ne, s

iltst

one

(inc.

slat

es a

nd s

hale

s)

2.2

Sand

ston

e

2.3

9





Issue 1.0 (02/09/2011)

2. HORIZONTAL GROUND HEAT EXCHANGERS

10

Issue 1.0 (02/09/2011)

Mean ground temperature (oC)6.0 7.0 8.0 9.0 10.0 11.0 12.0

NE

Sco

tland

NW

Sco

tland

E S

cotla

nd

Bor

ders

W S

cotla

nd

Nor

ther

n Ire

land

Nor

th-e

aste

rnN

orth

-wes

tern

Mid

land

sW

ales

E P

enni

nes

W P

enni

nes

Eas

t Ang

liaS

outh

-eas

tern

Sou

ther

n

Sev

ern

Valle

y

Sou

th-w

este

rn

Tham

es V

alle

y


11

12

14

17

17

20

20

24

22

28

25

31

28

34

4.3

12

8.7

5.3

15

11

6.5

19

14

7.5

22

16

8.6

25

19

9.7

28

21

10

31

23

6.5 8.0 10 12 14 16 17

3.2

2.0

0.8

Gro

un

d t

he

rmal

co

nd

uct

ivit

y (

W/m

/K)

4.0

2.8

1.2

2.4

0.4

1.6

3.6

0.50.4

2.4

Sand

(w

ater

-sat

urat

ed)

Cla

y/si

lt (d

ry)

Sand

(dr

y)

1.7

Cla

y/si

lt (w

ater

-sat

urat

ed)

Re

com

me

nd

ed

val

ue

s an

d r

an

ges

of

the

rmal

co

nd

uct

ivit

y

for

dif

fere

nt

rock

typ

es

(W/m

/K)

Maximum power to be extracted per unit length of horizontal ground heat exchanger (W/m) with 1200 FLEQ run hours


0.75m minimum pipe spacing (d > 0.75m)Pipe depth between 0.8m and 1.2m

Table created assuming 25mm OD SDR 11 pipeTable created assuming a relationship between the mean monthly temperature swing and annual mean ground temperature

11

Issue 1.0 (02/09/2011)


NE

Sco

tland

NW

Sco

tland

E S

cotla

nd

Bor

ders

W S

cotla

nd

Nor

ther

n Ire

land

Nor

th-e

aste

rnN

orth

-wes

tern

Mid

land

sW

ales

E P

enni

nes

W P

enni

nes

Eas

t Ang

liaS

outh

-eas

tern

Sou

ther

n

Sev

ern

Valle

y

Sou

th-w

este

rn

Tham

es V

alle

y


7.7

9.5

10

13

12

15

14

18

16

21

18

23

20

26

2.8

8.7

6.2

3.4

11

7.9

4.2

14

9.7

4.9

16

11

5.6

19

13

6.3

20

15

6.8

23

16

4.5 5.5 6.9 8.1 9.4 11 12

3.2

2.0

0.8

Gro

un

d t

he

rmal

co

nd

uct

ivit

y (

W/m

/K)

4.0

2.8

1.2

2.4

0.4

1.6

3.6

0.50.4

2.4

Sand

(w

ater

-sat

urat

ed)

Cla

y/si

lt (d

ry)

Sand

(dr

y)

1.7

Cla

y/si

lt (w

ater

-sat

urat

ed)

Re

com

me

nd

ed

val

ue

s an

d r

an

ges

of

the

rmal

co

nd

uct

ivit

y

for

dif

fere

nt

rock

typ

es

(W/m

/K)





12

Issue 1.0 (02/09/2011)


NE

Sco

tland

NW

Sco

tland

E S

cotla

nd

Bor

ders

W S

cotla

nd

Nor

ther

n Ire

land

Nor

th-e

aste

rnN

orth

-wes

tern

Mid

land

sW

ales

E P

enni

nes

W P

enni

nes

Eas

t Ang

liaS

outh

-eas

tern

Sou

ther

n

Sev

ern

Valle

y

Sou

th-w

este

rn

Tham

es V

alle

y


6.0

7.6

7.7

10

9.4

12

11

14

12

16

14

18

15

20

2.1

6.9

4.7

2.5

9.0

6.0

3.1

11

7.4

3.6

13

8.7

4.1

14

10

4.6

16

11

5.0

18

12

3.4 4.2 5.2 6.1 7.1 8.2 8.8

3.2

2.0

0.8

Gro

un

d t

he

rmal

co

nd

uct

ivit

y (

W/m

/K)

4.0

2.8

1.2

2.4

0.4

1.6

3.6

0.50.4

2.4

Sand

(w

ater

-sat

urat

ed)

Cla

y/si

lt (d

ry)

Sand

(dr

y)

1.7

Cla

y/si

lt (w

ater

-sat

urat

ed)

Re

com

me

nd

ed

val

ue

s an

d r

an

ges

of

the

rmal

co

nd

uct

ivit

y

for

dif

fere

nt

rock

typ

es

(W/m

/K)





13

Issue 1.0 (02/09/2011)


NE

Sco

tland

NW

Sco

tland

E S

cotla

nd

Bor

ders

W S

cotla

nd

Nor

ther

n Ire

land

Nor

th-e

aste

rnN

orth

-wes

tern

Mid

land

sW

ales

E P

enni

nes

W P

enni

nes

Eas

t Ang

liaS

outh

-eas

tern

Sou

ther

n

Sev

ern

Valle

y

Sou

th-w

este

rn

Tham

es V

alle

y


4.9

6.3

6.2

8.3

7.6

10

8.8

12

10

14

11

15

12

17

1.6

5.7

3.8

1.9

7.4

4.8

2.4

8.9

5.9

2.8

10

6.9

3.2

12

8.0

3.6

13

9.0

3.9

15

9.9

2.7 3.3 4.1 4.8 5.6 6.5 6.9

3.2

2.0

0.8

Gro

un

d t

he

rmal

co

nd

uct

ivit

y (

W/m

/K)

4.0

2.8

1.2

2.4

0.4

1.6

3.6

0.50.4

2.4

Sand

(w

ater

-sat

urat

ed)

Cla

y/si

lt (d

ry)

Sand

(dr

y)

1.7

Cla

y/si

lt (w

ater

-sat

urat

ed)

Re

com

me

nd

ed

val

ue

s an

d r

an

ges

of

the

rmal

co

nd

uct

ivit

y

for

dif

fere

nt

rock

typ

es

(W/m

/K)





14

Issue 1.0 (02/09/2011)


NE

Sco

tland

NW

Sco

tland

E S

cotla

nd

Bor

ders

W S

cotla

nd

Nor

ther

n Ire

land

Nor

th-e

aste

rnN

orth

-wes

tern

Mid

land

sW

ales

E P

enni

nes

W P

enni

nes

Eas

t Ang

liaS

outh

-eas

tern

Sou

ther

n

Sev

ern

Valle

y

Sou

th-w

este

rn

Tham

es V

alle

y


4.2

5.4

5.3

7.2

6.3

8.7

7.3

10

8.3

11

9.1

13

10

14

1.4

4.8

3.2

1.6

6.4

4.1

2.0

7.6

4.9

2.3

8.8

5.7

2.5

9.9

6.5

2.9

11

7.2

3.2

12

7.9

2.3 2.8 3.4 3.9 4.5 5.1 5.6

3.2

2.0

0.8

Gro

un

d t

he

rmal

co

nd

uct

ivit

y (

W/m

/K)

4.0

2.8

1.2

2.4

0.4

1.6

3.6

0.50.4

2.4

Sand

(w

ater

-sat

urat

ed)

Cla

y/si

lt (d

ry)

Sand

(dr

y)

1.7

Cla

y/si

lt (w

ater

-sat

urat

ed)

Re

com

me

nd

ed

val

ue

s an

d r

an

ges

of

the

rmal

co

nd

uct

ivit

y

for

dif

fere

nt

rock

typ

es

(W/m

/K)





15

Issue 1.0 (02/09/2011)

3. SLINKY GROUND HEAT EXCHANGERS

16

Issue 1.0 (02/09/2011)

Maximum power to be extracted per unit length of slinky ground heat exchanger trench (W/m) with 1200 FLEQ run hours


3m minimum trench spacing (d ≥ 3m)Mean slinky depth between 0.8m and 1.2m

Table created assuming 32mm OD SDR 11 pipePipe length to trench length ratio, Rpt ≥ 4. For a 900mm slinky diameter this corresponds to a maximum 1250mm slinky pitch Table created assuming a relationship between the mean monthly temperature swing and annual mean ground temperature


NE

Sco

tland

NW

Sco

tland

E S

cotla

nd

Bor

ders

W S

cotla

nd

Nor

ther

n Ire

land

Nor

th-e

aste

rnN

orth

-wes

tern

Mid

land

sW

ales

E P

enni

nes

W P

enni

nes

Eas

t Ang

liaS

outh

-eas

tern

Sou

ther

n

Sev

ern

Valle

y

Sou

th-w

este

rn

Tham

es V

alle

y


40

49

50

62

59

74

68

86

77

97

85

107

93

118

15

45

32

18

57

40

22

67

48

25

78

55

28

87

63

32

96

70

34

106

77

24 29 35 40 46 52 56

3.2

2.0

0.8

Gro

un

d t

he

rmal

co

nd

uct

ivit

y (

W/m

/K)

4.0

2.8

1.2

2.4

0.4

1.6

3.6

0.50.4

2.4

Sand

(w

ater

-sat

urat

ed)

Cla

y/si

lt (d

ry)

Sand

(dr

y)

1.7

Cla

y/si

lt (w

ater

-sat

urat

ed)

Re

com

me

nd

ed

val

ue

s an

d r

an

ges

of

the

rmal

co

nd

uct

ivit

y

for

dif

fere

nt

rock

typ

es

(W/m

/K)

17

Issue 1.0 (02/09/2011)



3m minimum trench spacing (d ≥ 3m) Mean slinky depth between 0.8m and 1.2m



NE

Sco

tland

NW

Sco

tland

E S

cotla

nd

Bor

ders

W S

cotla

nd

Nor

ther

n Ire

land

Nor

th-e

aste

rnN

orth

-wes

tern

Mid

land

sW

ales

E P

enni

nes

W P

enni

nes

Eas

t Ang

liaS

outh

-eas

tern

Sou

ther

n

Sev

ern

Valle

y

Sou

th-w

este

rn

Tham

es V

alle

y


28

35

34

45

41

53

47

61

52

69

58

76

63

84

9.8

32

22

11

40

27

14

47

32

16

54

37

18

61

42

20

67

47

21

73

51

16 19 23 26 30 34 36

3.2

2.0

0.8

Gro

un

d t

he

rmal

co

nd

uct

ivit

y (

W/m

/K)

4.0

2.8

1.2

2.4

0.4

1.6

3.6

0.50.4

2.4

Sand

(w

ater

-sat

urat

ed)

Cla

y/si

lt (d

ry)

Sand

(dr

y)

1.7

Cla

y/si

lt (w

ater

-sat

urat

ed)

Re

com

me

nd

ed

val

ue

s an

d r

an

ges

of

the

rmal

co

nd

uct

ivit

y

for

dif

fere

nt

rock

typ

es

(W/m

/K)

18

Issue 1.0 (02/09/2011)






NE

Sco

tland

NW

Sco

tland

E S

cotla

nd

Bor

ders

W S

cotla

nd

Nor

ther

n Ire

land

Nor

th-e

aste

rnN

orth

-wes

tern

Mid

land

sW

ales

E P

enni

nes

W P

enni

nes

Eas

t Ang

liaS

outh

-eas

tern

Sou

ther

n

Sev

ern

Valle

y

Sou

th-w

este

rn

Tham

es V

alle

y


21

27

26

34

30

40

35

47

39

52

43

57

47

63

7.0

24

16

8.2

30

20

9.9

36

24

11

41

28

13

46

31

14

50

35

15

55

38

12 14 17 19 22 25 27

3.2

2.0

0.8

Gro

un

d t

he

rmal

co

nd

uct

ivit

y (

W/m

/K)

4.0

2.8

1.2

2.4

0.4

1.6

3.6

0.50.4

2.4

Sand

(w

ater

-sat

urat

ed)

Cla

y/si

lt (d

ry)

Sand

(dr

y)

1.7

Cla

y/si

lt (w

ater

-sat

urat

ed)

Re

com

me

nd

ed

val

ue

s an

d r

an

ges

of

the

rmal

co

nd

uct

ivit

y

for

dif

fere

nt

rock

typ

es

(W/m

/K)

19

Issue 1.0 (02/09/2011)



3m minimum trench spacing (d ≥ 3m) Mean slinky depth between 0.8m and 1.2m



NE

Sco

tland

NW

Sco

tland

E S

cotla

nd

Bor

ders

W S

cotla

nd

Nor

ther

n Ire

land

Nor

th-e

aste

rnN

orth

-wes

tern

Mid

land

sW

ales

E P

enni

nes

W P

enni

nes

Eas

t Ang

liaS

outh

-eas

tern

Sou

ther

n

Sev

ern

Valle

y

Sou

th-w

este

rn

Tham

es V

alle

y


16

22

20

27

24

32

27

38

31

42

34

46

37

51

5.3

19

13

6.3

24

16

7.5

28

19

8.5

33

21

9.6

37

24

11

40

27

12

44

30

9.0 11 13 15 17 19 21

3.2

2.0

0.8

Gro

un

d t

he

rmal

co

nd

uct

ivit

y (

W/m

/K)

4.0

2.8

1.2

2.4

0.4

1.6

3.6

0.50.4

2.4

Sand

(w

ater

-sat

urat

ed)

Cla

y/si

lt (d

ry)

Sand

(dr

y)

1.7

Cla

y/si

lt (w

ater

-sat

urat

ed)

Re

com

me

nd

ed

val

ue

s an

d r

an

ges

of

the

rmal

co

nd

uct

ivit

y

for

dif

fere

nt

rock

typ

es

(W/m

/K)

20

Issue 1.0 (02/09/2011)






NE

Sco

tland

NW

Sco

tland

E S

cotla

nd

Bor

ders

W S

cotla

nd

Nor

ther

n Ire

land

Nor

th-e

aste

rnN

orth

-wes

tern

Mid

land

sW

ales

E P

enni

nes

W P

enni

nes

Eas

t Ang

liaS

outh

-eas

tern

Sou

ther

n

Sev

ern

Valle

y

Sou

th-w

este

rn

Tham

es V

alle

y


14

18

17

23

20

27

22

32

25

35

28

39

31

43

4.3

16

10

5.0

20

13

6.0

24

15

6.8

27

17

7.7

30

20

8.7

33

22

9.3

37

24

7.2 8.6 10 12 14 16 17

3.2

2.0

0.8

Gro

un

d t

he

rmal

co

nd

uct

ivit

y (

W/m

/K)

4.0

2.8

1.2

2.4

0.4

1.6

3.6

0.50.4

2.4

Sand

(w

ater

-sat

urat

ed)

Cla

y/si

lt (d

ry)

Sand

(dr

y)

1.7

Cla

y/si

lt (w

ater

-sat

urat

ed)

Re

com

me

nd

ed

val

ue

s an

d r

an

ges

of

the

rmal

co

nd

uct

ivit

y

for

dif

fere

nt

rock

typ

es

(W/m

/K)

21

Issue 1.0 (02/09/2011)

Issue Number: Amendment Details: Date:

1.0 First issue 02/09/2011

4. AMENDMENTS ISSUED SINCE PUBLICATION

22

Documents

MCS 022: GROUND HEAT EXCHANGER LOOK-UP TABLES · 2014. 3. 13. · MCS 022: GROUND HEAT EXCHANGER LOOK-UP TABLES SUPPLEMENTARY MATERIAL TO MIS 3005 Issue 1.0 1! Issue 1.0 (02/09/2011)