Ψυκτικός Κύκλος 07_ebook.pdf

2007-2013

,

, /

1. ............................................................................................... 1 2. ............................................................................................... 28 3. , (Split Units) ...................................................................................................................... 28 4. ..................................................................................... 28

| 1

1.

,

,

.

o

o (condenser)

o

o (evaporator)

, ,

, (

),

.

.

| 2

1:

| 3

.

:

, ,

.

(

).

.

Q+ Q =Q

Q =

,

(..) ,

(..) .

2:

| 4

,

.

, , , ,

.

.

3:

4:

| 5

(condenser)

.

Q

. Q .

, ,

,

(

-h Mollier).

(

)

, , .

.

( ..).

(

), (

). ,

.

( ).

( )

, .

,

.

| 6

, ,

(- ..)

.

5:

6:

| 7

.

.

,

.

(split, room ..)

0,4mm1,4mm

,

.

,

,

.

7:

| 8

,

,

.

.

.

,

...

( 450C)

00C, ;

, ,

, ,

. ( 75% 25% - flash gas).

, ,

,

.

8:

| 9

.

.

,

,

.

.

.

( )

.

(,

)

.

(

).

| 10

9: (orifice)

| 11

(evaporator)

(evaporator)

(- .). ,

.

.

.

.

, ,

,

( ),

( )

(superheat).

, ,

... ( ).

, ,

( ,

, ).

,

,

.

| 12

10:

11:

| 13

Mollier (- P-H)

Mollier

-h,

,

.

:

,

,

(

).

,

( ) .

,

:

, Kg/cm2 Atm

S.I.(), BAR Pa

Lb/in2 P.s.i.

.

(

) Kg

. . 00C

, .

| 14

,

00C.

. :

Kcal/Kg

S.I. Kj/kg

B.t.u/Lb

,

Mollier (. ).

Mollier

. :

, .

.

. :

, ,

.

. :

.

.

.

.

, .

. : , ,

,

| 15

.

90%-10% 10% -90% -

.

.

12: -h

| 16

.

,

.

,

.

. ,

-

.

. (s)

1 Kg

10. . :

Kj/kg0K, Kcal/Kg0K

. M3

1Kg (M3/Kg).

.

1 Kg 1 M3 (M3/kg).

-h,

.

| 17

-

.

o

o

o

o

:

o

o .

( )

1,5bar 12bar,

.

Q=300-

200=100KJ/KG.

w.

w=100KJ/KG

,

.

,

.

| 18

H

KJ/KG

12

1

200 300

p

bar

,

q .

,

.

,

,

.

13:

| 19

, .

,

.

,

.

,

w,

,

.

q.

... q

.

q= ... (q)+ (w)

| 20

H

KJ/KG

12

1

200 300

Wq

80

p

bar

( ),

( ).

.

, ,

. (

)

, .

12bar 1bar.

14:

| 21

H

KJ/KG

12

1

200 300

80

P

BAR

.

, ,

, ,

,

15:

| 22

,

q

.

, ( )

.

, ,

,

( ).

- .

, ...q

,

.

Q = 200-80=120 KJ/Kg

| 23

H

KJ/KG

12

1

200 30080

P

BAR

q

...

16:

| 24

H

KJ/KG

12

1

200 300

Wq

80

P

BAR

-h

,

.

, . .

( ),

.

, ,

.

, (i.s.o.

..).

17:

| 25

Mollier :

.

,

.

( ),

.

. ,

.

.

.

, .

,

. , , ,

.

, ...

,

| 26

H

KJ/KG

12

1

200 300

Wq

8050

P

BAR

,

.

(C.O.P)

.

C.O.P.

.

18:

| 27

, q (..) w ( ),

,

-h.

:

C.O.P=q/w=120/100=1,2

.

C.O.P.= /

, Q , .

Q=q(...) m

m ( Kg/h)

m V M3/h

, ,

Kg/M3 Mollier.

() ,

, .

=W( ) m

.

| 28

2.

,

.

, (

),

, (ASH RAE -

, CECOMAF -

) .

:

30C - 7 0C

-120C -180C

-240C -

320C.

:

, 5,5 22,1 , (

.

,

().

| 29

.

. :

7 cm 4 cm

9 cm 5 cm

: 3*** 4****.

3*** -18 o 4* * * * -24o.

:

( )

( )

| 30

()

30C 70C .

.

- 120C

-240C. ,

.

,

, .

-200C,

.

-40C- 00C

30C- 70C.

.

| 31

( ).

1.

.

2.

. ,

.

3. ,

, ,

.

.

.

,

.

( ).

200 btu/h-1000 btu/h.

.

,

.

, , ,

.

| 32

, ,

, , (NO

FROST).

,

.

.

,

.

.

,

. ,

| 33

,

.

(),

,

.

.

.

:

19: ,

| 34

. ,

.

(

) 1/3 - 3/8. R12 (

), R 134a

R600 (), R12 .

R134a

20% , 20%.

, .

, , ,

,

.

20:

| 35

.

( -

)

.

(

, ).

( )

( ).

Schrader, service ,

.

.

.

15C 22C

21:

| 36

.

, ,

, ,

.

22:

| 37

( )

.

:

( )

.

:

1.

2.

3.

23:

| 38

. :

1/9 7ft* 0,030 (0,75mm)

1/3 15ft 0,049(1,25mm)

* (1ft 0,304m)

:

( , L

(. ).

,

.

.

,

,

.

| 39

,

, (

) . .

.

, ,

.

.

:

gel

gel

.

1/12 3/4 .

. 1000C.

| 40

.

. .

()

.

.

. ,

.

,

.

,

.

, ,

.

,

.

.

| 41

,

up top.

.

.

, ,

.

,

.

.

(),

, ..

.

,

.

,

.

| 42

, ,

, .

.

.)

.

, ( S p l i t U n i t s )

| 28

3. , (Split Units)

,

,

. -,

( ),

.

,

:

-

,

.


| 29

,

, ,

,

. , ,

.

-

. ,

, .

24:


| 30

, ,

,

.

, .

,

,

. ,

,

.

25:


| 31

,

. ,

.

,

.

, ,

, , bar, .. ,

, .

26:


| 32

,

2,0 6,0

kW.

, ,

.

,

(. ). ,

27:


| 33

.

:

( ,

)

, ,

. , ,

.

,

(). ,

,

,

.

,

(. ).

:

(ON/OFF)


| 34

(, , ,

, )

(. )

:

( )

( 1.9),

(rotary) (scroll)

(screw) ,

.

,

,

.


| 35

, .

,

, ,

bypass .

/ :

, / "" ""

"

" "" . , /

, .

.

,

,

, .

(.. ), /

, ,

,

.

,

. ..

.


| 36

1. ( ),

- ( ).

,

. , ,

.

2. ( )

( ). ,

.

3. .

28:


| 37

) . ,

.

"",

,

, . ,

.

,

,

, ,

.

29:


| 38

. ,

(. ) ,

. ,

.

,

.

(.. , ),

.

, 2,20 m

,

,

. ,

,

.

,

,


| 39

. ,

. ,

. ,

,

, ,

(. ).

,

. ,

(. ).

,

,

(. ),

.

.

(1, 2, 3, 4, ...)


| 40

,

, .

,

,

,

.

, (. ),

. ,

service .

, service ,

, .

,

. ,

.

, ,

,

.

, .

,

( ). ,


| 41

,

.

, ,

, . ,

5 m, 30 gr

.

, ,

' .

,

.

,

.

,

, . ,

:

1. ,

. ,

,

.

2.

, (.

)


| 42

3. ,

. ,

, ,

.

4. (0 bar

),

.

.

,

30:


| 43

.

, .

.

,

, .

| 28

4.

, .

.

, ,

. ,

:

, . ,

:

:

,

| 29

(, , , ).

, ,

.

,

,

:

,

, .

,

.

.

,

,

, .

,

:

( ).

.

.

| 30

.

.

, .

,

.

, ,

,

. ,

, .

,

(/) .

,

.

(Fan Coils FCUs)

(), .

| 31

31: Fan Coil

32: ,

| 32

Fan Coil Units FCUs ( ).

,

.

FCUs ,

, ,

.

, ,

.

FCUs ,

, CFM (1 L/s = 2,13 CFM). 200,

300, 400, 600, 800, 1000 1200 CFM.

FCU .

FCUs, (.. FC20,

FC30) L/s.

Fan Coils

, ,

. ,

FCUs ( ), (

), .

| 33

Fan Coil

Fan Coil :

. FCUs,

.

,

. FCU

, .

.

Fan Coil

. FCUs

33: FCU ,

| 34

,

, .

,

.

.

, FCU.

(On Off),

.

FCU, (

) ,

.

()

,

,

:

| 35

.

,

AHU ( Air Handling Units),

. ,

, .

,

.

, ,

,

() .

, .

.

34:

| 36

, , ,

.

, ,

.

,

.

35: ,

| 37

, ,

. ,

( )

,

( ).

,

.

:

( )

36:

| 38

( ),

.

(. ).

.

,

, .

. (Spray)

| 39

( ),

, ,

.

, , .

.

37:

| 40

.

,

.

, .

.

,

.

38:

| 41

. ,

() .

. ,

.

, .

,

.

75 % 90 % .

, .

0,8 m 0,12 mm.

| 42

, :

, ,

,

.

| 43

.

. ,

.

(splitters),

.

.

, ,

.

.

.

( )

:

. .

.

, .

.

| 44

, ,

.

,

.

:

()

| 45

(),

. ,

.

:

39:

| 46

1. :

.

6-10 m/s. ,

10-12 m/s.

. 12 m/s.

,

25 m/s.

,

.

10 m/s

7-9 m/s,

12 m/s 9-11 m/s.

2. , :

. 100 mm

.

. 100-170 mm

.

. 170-300 mm

300 mm ( ).

, .

, , ,

. ,

| 47

.

.

,

.

40:

| 48

. ,

(1:1), (

, )

.

,

, :

, ,

.

,

,

( ).

(Fan

Coils) ().

| 49

,

,

,

.

,

(FCUs ).

,

.

, ,

() (FCUs)

41:

| 50

,

Fan Coils , .

( )

9mm,

.

.

,

.

.

,

.

.

(FCUs).

FCUs

FCUs FCU

FCUs.

| 51

,

.

.

,

,

.

,

.

,

.

(Fan Coils) , ,

.

FCU

, . FCU

,

, .

| 52

.

:

(, FCUs)

| 53

:

(Chiller )

(, FCUs)

( )

42:

| 54

43:

| 55

,

,

.

:

- ( - )

- ( - )

- ( - )

,

.

| 56

,

, (COP~2.6)

.

,

.

44:

| 57

,

, (

).

,

, ,

.

45:

| 58

.

.

, COP 4

5,5. , 1kWh 4 5,5 kWh

.

46:

| 59

()

,

.

, .

18-22C. COP

47:

| 60

4 4,5 - (

2-2,5).

1. 2. 3. , (Split Units)4.

Ψυκτικός Κύκλος 07_ebook.pdf

Documents

Transcript of Ψυκτικός Κύκλος 07_ebook.pdf