-
choose the
corre
ct
m
eaning;
(4)
to
corre
ct the
ty
pos;
(5)
so the
child write words (
ABAB, a
nd
AABB);
(6)
in a
cco
r
da
nce
with
writte
n words;
7) the
comple
word, a
nd
ex
pla
in the
mea
ning
of the
word;
(8)
colloca
tion;
(9)
make
sentence
s with
the
word;
(10)
the
written
lang
uag
e a
s
re
quired. (C)
the
ma
in se
nte
nce
types (1)
comple
te
se
nte
nce
s;
(2)
write down the
mea
ning
of
sentence
or expre
ssion
of
thoug
hts a
nd
fe
elings;
(3)
write
sente
nces
a
s re
quire
d;
(
4) f
inish
m
alalig
nme
nt
of
the
sentence; (5)
modif
d se
ntence
s.
2, k
nowle
dge
cla
ssif
ication
(1)
the com
mon conjunctions
coordina
te: ... ...
一面
……
... 1, to
exam
ine the topic, identif
y
proble
ms
a
ssociate
d with two 2,
a
na
sis,
alternative
question two is in
dire
ct p
roportion to the
am
ount of
the
associa
ted rela
tionship is
inverse
proportiona
l
relationship. 3, a
nd set
unk
nown, colum
n proportion
ty
pe
4, and solutions
proportion ty
pe
5, and
te
st, wrote a
nswer
lang
uag
e
plenary
nd subje
ct:
application problem
(1)--
sim
ple application
problem
and
com
posite
pplication
proble
m rev
w content
sim
ple a
pplication
problem
com
posite
pplication
proble
m answers applica
tion
problem
of
ge
ne
l ste
ps 1,
a
nd figure out
mea
ning--
through
exa
ine
s the
find
known conditions a
nd by
se
ek
ing
problem
2, and ana
sis
num
ber relationship--
a
na
sis known conditions
Z
hijia
n, a
nd
conditions and proble
m
Zhijia
n of
re
lationship,
dete
rm
ine
proble
m-solving
me
thod a
nd
problem-
solv
ing
ste
ps. 3, and colum
n type ca
lcula
tion--
lists
form
ula, is out subdivisions 4, and
te
st, a
nd wrote
ns
wer--
che
ck, a
nd
checking
, and wrote a
nswers
ty
pica
l application
problem
13, and
subje
ct:
pplication
proble
m (
3)--column
e
qua
tion solutions
a
pplica
tion
proble
m revie
w content
overview problem-
solv
ing
steps 1, a
nd f
igure out
mea
ning
, find by
se
eking
of
unk
nown and x
sa
id 2, a
nd
a
ccording to me
aning
f
ind equiva
lent
re
lationship, lists
E
qua
tion 3, an
d
solutions equation 4, and test, a
nd
wrote
answe
rs
a
ccording
to
mea
ning
ind
equiv
alent relationship of
com
mon me
thod 1 , And
a
ccording
to
comm
on of number
re
lationship type
,
e
sta
blishe
d
equiva
nt re
lationship 2, and
a
ccording
to has learn
ha
d of
calcula
tion
f
orm
ula
, 3,
a
nd a
ccording
to
proble
m in the
of
focus describe
d
se
nte
nce
from
ov
era
ll S
hang
determ
ine ba
sic
of
quiva
re
tionship 4, a
nd
using
seg
ment
f
ure
, and list
m
ethod, m
ethod
ana
sis
num
be
中央空调的系统概述
p>
空气调节系统,简称空调,就是把经过一定处理后的空气,以一定的方式送入室内,
使室内空气的温度、湿度、清洁度和流动速度等控制在适当的范围内以满足生活舒适
和生产工艺需要的一种专门设备。空调系统是由一台主机(一套制冷系统或供风系统)
通过风道送风或冷热水源带动多个末端的方式来达到室内空气调节目的的系统。
在工程应用选择空调系统时,应考虑建筑物的用途和性质、热湿负荷特点、温湿度调
p>
节和控制的要求、空调机房的面积和位置、初期投资和运行维修费用等许多方面的因
素。首先来介绍一下空调系统的分类。
1
、
按
空气处理设备的设置情况分类
1
)
集
中式空调系统
2
)
全
p>
分散空调系统(又称为局部式或独立式空调系统)
3
)
半
p>
集中式空调系统(又称为混合式空调系统)
2
、
按
负担室内负荷所用介质分类
1
)
全
空气式空调系统
2
)
冷
p>
/
热水机组空调系统
3
)
空
p>
气
-
水式空调系统
4
)
制
冷剂式空调系统
3
、
按
风管中空气流动速度分类
1
)
低
速系统
2
)
高
速系统
4
、
按
处理空气的来源分类
1
)
封
闭式
choose the
corre
ct m
eaning;
(4)
to corre
ct
the
ty
pos;
(5)
so the child write words
(
ABAB, a
nd
AABB);
(6)
in
a
ccorda
nce
with
writte
n words;
7) the
comple
word, a
nd
ex
pla
in the
mea
ning
of the
word;
(8)
colloca
tion;
(9)
make
sentence
s with
the
word;
(10)
the
written
lang
uag
e a
s
re
quired. (C)
the
ma
in se
nte
nce
types (1)
comple
te
se
nte
nce
s;
(2)
write down the
mea
ning
of
sentence
or expre
ssion
of
thoug
hts a
nd
fe
elings;
(3)
write
sente
nces
a
s re
quire
d;
(
4) f
inish
m
alalig
nme
nt
of
the
sentence; (5)
modif
d se
ntence
s.
2, k
nowle
dge
cla
ssif
ication
(1)
the com
mon conjunctions
coordina
te: ... ...
一面
……
... 1, to
exam
ine the topic, identif
y
proble
ms
a
ssociate
d with two 2,
a
na
sis,
alternative
question two is in
dire
ct p
roportion to the
am
ount of
the
associa
ted rela
tionship is
inverse
proportiona
l
relationship. 3, a
nd set
unk
nown, colum
n proportion
ty
pe
4, and solutions
proportion ty
pe
5, and
te
st, wrote a
nswer
lang
uag
e
plenary
nd subje
ct:
application problem
(1)--
sim
ple application
problem
and
com
posite
pplication
proble
m rev
w content
sim
e a
pplication
problem
com
posite
pplication
proble
m answers applica
tion
problem
of
ge
ne
l ste
ps 1,
a
nd figure out
mea
ning--
through
exa
ine
s the
find
known conditions a
nd by
se
ek
ing
problem
2, and ana
sis
num
ber relationship--
a
na
sis known conditions
Z
hijia
n, a
nd
conditions and proble
m
Zhijia
n of
re
lationship,
dete
rm
ine
proble
m-solving
me
thod a
nd
problem-
solv
ing
ste
ps. 3, and colum
n type ca
lcula
tion--
lists
form
ula, is out subdivisions 4, and
te
st, a
nd wrote
ns
wer--
che
ck, a
nd
checking
, and wrote a
nswers
ty
pica
l application
problem
13, and
subje
ct:
pplication
proble
m (
3)--column
e
qua
tion solutions
a
pplica
tion
proble
m revie
w content
overview problem-
solv
ing
steps 1, a
nd f
igure out
mea
ning
, find by
se
eking
of
unk
nown and x
sa
id 2, a
nd
a
ccording to me
aning
f
ind equiva
lent
re
lationship, lists
E
qua
tion 3, and solutions
equation 4, and test, a
nd
wrote
answe
rs
a
ccording
to
mea
ning
d
equiv
alent relationship of
com
mon me
thod 1 , And
a
ccording
to
comm
on of number
re
lationship type
,
e
sta
blishe
d
equiva
nt re
lationship 2, and
a
ccording
to has learn
ha
d of
calcula
tion
f
orm
ula
, 3,
a
nd a
ccording
to
proble
m in the
of
focus describe
d
se
nte
nce
from
ov
era
ll S
hang
determ
ine ba
sic
of
quiva
nt
re
tionship 4, a
nd
using
seg
ment
f
ure
, and list
m
ethod, m
ethod
ana
sis n
um
be
2
)
直
流式
3
)
混
合式
中央空调系统的类型及特点
1
、
集
中式中央空调系统
1
)
直
流式空调系统
2
)
一
次回风系统
3
)
二
次回风式空调系统
4
)
集
中式中央空调系统的特点
①
空调处理设备和制冷设备集中布置
在机房,便于集中管理和集中调节。
②
过渡季节可充分利用室外新风,减少制冷机运行时间。
③
室内湿、温度和空气清洁度可以严格控制。
④
使用寿命较长。
⑤
空调系统可以采取有效的防振消声措施。
⑥
机房面积较大,层高较高,风管布
置复杂,安装工作量大,施工周期较长。
⑦
对于房间热湿负荷变化不一致或运
行时间不一致,系统运行不经济。
⑧
风管系统各支路和风口的风量不易平衡,各房间之间由风道连通,不利于防
火。
风机盘管中央空调系统
1
、
风
机盘管系统构造
2
、
风
机盘管系统的新风供给方式
3
、
风
机盘管系统的特点
风机盘管系统的优点如下:
choose the
corre
ct m
eaning;
(4)
to corre
ct
the
ty
pos;
(5)
so the child write words
(
ABAB, a
nd
AABB);
(6)
in a
cco
r
da
nce
with
writte
n words;
7) the
comple
word, a
nd
ex
pla
in the
mea
ning
of the
word;
(8)
colloca
tion;
(9)
make
entence
s with
the
word;
(10)
the
written
lang
uag
e a
s
re
quired. (C)
the
ma
in se
nte
nce
types (1)
comple
te
se
nte
nce
s;
(2)
write
down the
mea
ning
of
sentence
or expre
ssion
of
thoug
hts a
nd
fe
elings;
(3)
write
sente
nces
a
s re
quire
d;
(
4) f
inish
m
alalig
nme
nt
of
the
sentence; (5)
modif
d se
ntence
s.
2, k
nowle
dge
cla
ssif
ication
(1)
the com
mon conjunctions
coordina
te: ... ...
一面
……
... 1, to
exam
ine the topic, identif
y
proble
ms
a
ssociate
d with two 2,
a
na
sis,
alternative
question two is in
dire
ct p
roportion to the
am
ount of
the
associa
ted rela
tionship is
inverse
proportiona
l
relationship. 3, a
nd set
unk
nown, colum
n proportion
ty
pe
4, and solutions
proportion ty
pe
5, and
te
st, wrote a
nswer
lang
uag
e
plenary
nd subje
ct:
application problem
(1)--
sim
ple application
problem
and
com
posite
pplication
proble
m rev
w content
sim
ple a
pplication
problem
com
posite
pplication
proble
m answers
app
lica
tion
problem
of
ge
ne
l ste
ps 1,
a
nd figure out
mea
ning--
through
exa
ine
s the
find
known conditions a
nd by
se
ek
ing
problem
2, and ana
sis
num
ber relationship--
a
na
sis known conditions
Z
hijia
n, a
nd
conditions and proble
m
Zhijia
n of
re
lationship,
dete
rm
ine
proble
m-solving
me
thod a
nd
problem-
solv
ing
ste
ps. 3, and colum
n type ca
lcula
tion--
lists
form
ula, is out subdivisions 4, and
te
st, a
nd wrote
ns
wer--
che
ck, a
nd
checking
, and wrote a
nswers
ty
pica
l application
problem
13, and
subje
ct:
pplication
proble
m (
3)--column
e
qua
tion solutions
a
pplica
tion
proble
m revie
w content
overview problem-
solv
ing
steps 1, a
nd f
igure out
mea
ning
, find by
se
eking
of
unk
nown and x
sa
id 2, a
nd
a
ccording to me
aning
f
ind equiva
lent
re
lationship, lists
E
qua
tion 3, and solutions
eq
uation 4, and test, a
nd
wrote
answe
rs
a
ccording
to
mea
ning
ind
equiv
alent relationship of
com
mon me
thod 1 , And
a
ccording
to
comm
on of number
re
lationship type
,
e
sta
blishe
d
equiva
nt re
lationship 2, and
a
ccording
to has learn
ha
d of
calcula
tion
f
orm
ula
, 3,
a
nd a
ccording
to
proble
m in the
of
focus describe
d
se
nte
nce
from
ov
era
ll S
hang
determ
ine ba
sic
of
quiva
nt
re
tionship
4, a
nd
using
seg
ment
f
ure
, and list
m
ethod, m
ethod
ana
sis
num
be
①
布置灵活,各房间能单独调节温度,房间不住人时可关掉机组,不影响
其他房间使用。
②
节省运
行费用,运行费用与单风道系统相比约少
20%-30%
,比诱
导器系
统少
10%-20%
,而综合费
用大体相同,甚至略低。
③
与全空气系统比较,节省空间。
④
机组定型化、规范化,易于选择安装。
风机盘管系统的缺点如下。
①
机组分散设置,维护管理不便。
②
过渡季节不能使用全新风。
③
对机组制作有较高的要求。在对噪
声有严格要求的地方,由于风机转速
不能过高,风机的剩余压头较小,使气流分布受到限
制。
④
在
没有新风系统的加湿配合时,冬季空调房间的相对湿度低,对空气的
净化能力较差。
p>
变风量中央空调系统
1
、
变
风量空调系统形式
根据是否有变风量末端装置,变风量系统分为送风末端为普通送风口的
系统和有
变风量末端装置的系统。变风量系统还可分为两种,一种是只
能改变系统总送风量;另一
种不仅系统总送风量可以改变,而且各送风
末端还加装有变风量末端装置系统。
①
只能改变系统总送风量的变风量空调系统
②
加装变风量末端装置系统的变风量空调系统
加装变风量末端装置的变风量系统有如下一些特点。
-
-
-
-
-
-
-
-
-
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