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中央空调的系统概述

作者:高考题库网
来源:https://www.bjmy2z.cn/gaokao
2021-02-09 22:43
tags:

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2021年2月9日发(作者:价签英文)


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中央空调的系统概述



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


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





空气处理设备的设置情况分类



1





中式空调系统



2





分散空调系统(又称为局部式或独立式空调系统)



3





集中式空调系统(又称为混合式空调系统)



2





负担室内负荷所用介质分类



1





空气式空调系统



2





/


热水机组空调系统



3






-


水式空调系统



4





冷剂式空调系统



3





风管中空气流动速度分类



1





速系统



2





速系统



4





处理空气的来源分类



1





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


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m rev


w content sim


e a


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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


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rm


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solv


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nswers ty


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l application problem


13, and subje


ct:


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nd wrote


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< p>
2





流式



3





合式



中央空调系统的类型及特点



1





中式中央空调系统



1





流式空调系统



2





次回风系统



3





次回风式空调系统



4





中式中央空调系统的特点





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。





过渡季节可充分利用室外新风,减少制冷机运行时间。





室内湿、温度和空气清洁度可以严格控制。





使用寿命较长。





空调系统可以采取有效的防振消声措施。





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。





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。





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





机盘管系统构造



2





机盘管系统的新风供给方式



3





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




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。





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。





与全空气系统比较,节省空间。





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。





机组分散设置,维护管理不便。





过渡季节不能使用全新风。





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。





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。



变风量中央空调系统



1





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。





只能改变系统总送风量的变风量空调系统





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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