: :

m3/kg

kcal/kg

= (kg) ( 1kg ) (kg)/ =0.622(Ps/Pt-Ps) :30C ,60% ? 4.241 kPa 60% 0.6x4.241=2.545 :30C , = (kg)/ (kg) =0.622(Ps/Pt-Ps)=0.0160 kg/kg

PV=RT ? 24C 20% 24C R=287 T=k V=0.85 m3/kg dry

0.7 0.2 0.1

2 1

*h1+W1hf=h2+W2hf

SHF=SH/(SH+LH)

OA

MA

SA

REA EA RA

: : : 25 C 50% 25 C 80% ? 25 C 40% ? 28 C 50% ? 23 C 50% ?

(1).OARA (1).OARA (2).MA() (2).MA() (3).RSHF (3).RSHF RA (4).RSHFRA (4).RSHFRA RSHF 90% 90%LA (5).LAMA (5).LAMA MA GSHF GSHF GSHF

GSHF=

32.2 18.5 h A - h5 = h3 h5 42 18.5

= 0.58

RSHF=0.73 RSHF=QRS/(QRS+QRL)

GSHF=0.58

22WB

60%RH o 1

h3=42 15.2WB 3 3 52%RH o

hA=32.2

=Qoa/Qrea=(15.7)

h5=18.5 90 GSHF 90 90

o 3 =23/12=1/(1+5.7)=1/6.7 2 A

5

o 4

o 50%RH

20DB

28DB

21.2DB

1 1 2 2 (T1*QOA+T2*QREA)/(QOA+QREA)

10

(1).?(L/h *539)/860 =

1. OA , RA 2. MA DB % RH DB

3. 4. SA 5.GSHF DB

6., 7.RSHF SA 8. MA SA

(1).?(L/h *539)/860 = (2) RSHF (3) MA (4) LA

(appatus dew point)mA ()

BF=??? mA adp

RA RSHF

RA SA MA OA

GSHF

(appatus dew point)mA ()

BF=??? mA adp

(1) ---- (2)

RSHF SA

30m*40m*2.5m 25000 kcal SHF =0.88 1?? ? 2??? 3 NFB? MS? ?

? ?

--- H=MST ----

NFB MS

OA EA REA

MA

SA RA

: 8kw 40C , :6kw 13C 24 C , 3kw ? ? =8/(40-24)(1)=0.5 kg/s H=MSDT =6/(24-13)(1)=0.55 kg/s SADT=3/(0.55)(1)=5.45 Tsa=24-5.45=18.55 Wc(13)(1)+ Wh(40)(1)= 0.55(18.55)(1) Wh=0.113 kg/s 1.8 kw 3kw+1.8= Wh=0.55-Wc

Wc=0.437 kg/s 4.8kw