北京体彩网

VRV空调系统知识
文章来源:网络   编辑:旭峰机电   时间:2017.05.17
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一、VRV空调系统的原理和特点

北京体彩网vrv kongdiaoxitongshizaidianlikongdiaoxitongzhong,tongguokongzhiyasuojidezhilengjixunhuanhejinrushineihuanreqidezhilengjiliuliang,shishidimanzushineilengrefuheyaoqiudegaoxiaolvlengjikongdiaoxitong。qigongzuoyuanlishi:youkongzhixitongcaijishineishushixingcanshu、shiwaihuanjingcanshuhebiaozhengzhilengxitongyunxingzhuangkuangdezhuangtaicanshu,genjuxitongyunxingyouhuazhunzeherentishushixingzhunze,tongguobianpindengshouduandiaojieyasuojishuqiliang,bingkongzhikongdiaoxitongdefengshan、dianzipengzhangfadengyiqiekekongbujian,baozhengshineihuanjingdeshushixing,bingshikongdiaoxitongwendingdingzuozaizuijiagongzuozhuangtai。 


VRV 空调系统具有明显的的节能、舒适效果,该系统依据室内负荷,在不同转速下连续运行,减少了因压缩机频繁启停造成的能量损失;采用压缩机低频启动,降低了启动电流,电气设备将大大节能,同时避免了对其它用电设备和电网的冲击;具有能调节容量的特性,改善了室内的舒适性。 

vrv kongdiaoxitongjuyoushejianzhuangfangbian、buzhilinghuoduobian、jianzhukongjianxiao、shiyongfangbian、kekaoxinggao、yunxingfeiyongdi、buxujifang、wushuixitongdengyoudian。 


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二、VRV空调系统在工程设计中应注意的问题 

1、新风问题 

北京体彩网kongdiaoxitongzhong,xinfengliangshiyigehenzhongyaodejishucanshu,yeshidadaoshineiweishengbiaozhundebaozheng。muqianchangyongdexinfengchulifangshiyou: 

(1) shiyongzhuanyongdexinfengji,qishineijianxinfenggongkuangsheji,paiguanshutongchangwei6 paihuozhe8 pai,fengyayejiaogao,ranerjiagehengao,yibangongchengzhongjiaoshaocaiyong; 

(2用全热交换器处理新风。这种方式特别适合有排风要求的场合,如餐饮娱乐、会议室等。将室外新风经过全热交换器与室外排风进行热湿交换后送入室内,可以大人降低新风负荷,非常节能。然而,在工程设计需要注意新风口和排风口的布置一定要合理,尤其是有污染的场所,更要考虑新风和排风的交义污染问题,在国内使用时,由于大多数城市空气质量较差,积灰严重,过滤器易堵塞,要经常清洗过滤器。 

(3用风机箱将新风送至各个室内机,新风负荷由各个室内机负担。该方式系统简单,设计时风机箱也根据系统要求很容易选到合适的风压。过渡季节还可以作为通风换气机使用。但是未经过处理的新风直接接入室内机时,与新风单独处理的系统相比,室内机型号加大,噪音也增大,而且在室外空气湿度较大时,室内机可能会产生结露现象。 

北京体彩网youcikeyikanchuduiyuvrv kongdiaoxitongzuijishoudexinfengwenti,tongchangqingkuangxiadoutuijiancaiyongdisanzhongchulifangshi,jingjiheli,jiandanshiyong。erzaiyoupaifengyaoqiudechanghe,zeyouxiankaolvdierzhongfangshi。 

2、室内机选择问题 

(1) 北京体彩网某工程在较窄小的电梯厅选用了嵌入式四面送风的室内机; 

(2某工程在吊顶下面安装吊式明装的室内机,不妥,应选用嵌入式双面或四面送风的室内机。

(3某工程某个面积很大的厅,选用数台四面送风的室内机,实际选用暗装风管式的室内机不但可节省初投资,还可以更灵活配合内装修布置送风口达到使用目的。

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3、室外机耗电量问题 

vrv kongdiaochanpinyangbenzhongtigongdeyasuojishugonglvbunengdangzuoyasuojidehaodianliang,liangzhezhijiancunzaizhedianjidexiaolv,yibanwei0.8。

4、室内外机的匹配问题 

shijigongchengzhong,youqishizhongxiaoxinggongcheng,tongyicengpingmianzhongyouduozhongshiyonggongnengfangjian,qishiyongshijianyebutong,erqiemianjiyejiaoxiao(ru:xiaohuiyishi、jiedaishi、baojian、xiaocantingdeng),yaoshixiankongdiaoxitongdehuafenjiubijiaokunnan,jishinengzuojianerxitongyeshifenfuza。ruguocaiyongvrvkongdiaoxitongyishangwentijiujiandanle,erqiechongfendetixianchutajinenglinghuobuzhi,younengjieshengpingchangyunxingfeiyongdetedian。jiranbabutonggongnenghebutongshiyongshijiandefangjianhezaitongyigekongdiaoxitongzhong,neime,jiucunzaishineihelipipeiwenti,zheijiuxuyaokaolvtongshishiyongxishudewenti,tongshishiyongxishuduoshaoshijutiqingkuangerding,danshishineijiheshiwaijiderongliangbijibunengdiyu50%,yebunengchaoguo130%。 

5、室外机的布置问题 

shiwaijidebuzhiyingmanzuxiashuyaoqiu:jinfengtongchangbuganrao,paifengshunchangbuhuiliu。zhiyouzuohaozheixiecainengbaozhengshiwaijidechanlengliang(reliang)。shiwaijibuzhizaiwuding、yangtaihedimianshang,qianmianliangzhongzuofajuduo,liangzhedouyouyouquedian: 

北京体彩网shiwaijibuzhizaicengdingshi,youdian:wudingjiaokongkuang,paifengshunchang,rekongqihenkuaidesanfadaogaokongqu。quedian:jinfengquzhe,dangzhongduoshiwaijibuzhizaitongyiwudingshi,jinfengquzheqieganraoduo。shiwaijibuzhizaiyangtaishangshiyoudian:jinfengshunchang。quedian:paifengbuchang,cunzaihuiliuxianxiang,dangshutaichuizhibuzhishi,rongyixingchengxiamianshiwaijidepaifengbeishangmianshiwaijixiruzuoweijinfeng,yingxiangjizuchanlengliang(reliang)。 

6、凝结水管的安装问题 

北京体彩网vrv kongdiaobufenshineijizidainingjieshuipaishengbeng,zheijishejidailaijidadefangbian。shijishangchengzhongningjieshuiguandezhangduyingjinliangduan,bingyaoyou0.01depodu,yimianxingchengguanneiqizu,paishuibuchang。ruguoningjieshuiguanpoguanbugoushi,kezhiyigepaishuishengchengguan。shengchengguandegaoduyingxiaoyugezhongxinghaoningjieshuipaishenggaodudeguidingzhi。shengchengguanjuguanshineijiyingxiao300mm。 

7、制冷剂的问题 

由于VRV 空调系统的管道接头较多,增加了制冷剂泄漏的可能性,且系统的内容积过大,增大了制冷剂充灌量,因此空调机安装的房间要求设计成:在出现制冷剂泄漏时,其浓度不会超过极限值。以制冷剂R410A 为例,它没有毒性和易燃性,但是当浓度上升时却存在窒息危险。其极限浓度计算方法是:制冷剂总量(千克)/安装室内机房间的最小容积(立方米)≤浓度极限(千克/立方米)用于一拖多的制冷剂的浓度极限为0.3 千克/立方米。浓度可能超过极限值的房间,与相邻房间要有开口,或者安装跟气体泄漏探测装置连锁的机械通风设备。

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zhu:zhuanzaiyuhulianwang