6ES5465-3AA13模塊2023

6ES5465-3AA13;
6ES5465-3AA13現(xiàn)貨；
6ES5465-3AA13供應(yīng)。

空調(diào)系統(tǒng)設(shè)計首先是根據(jù)室外氣象參數(shù)和室內(nèi)空調(diào)設(shè)計參數(shù)計算冷負(fù)荷，按分區(qū)結(jié)構(gòu)特點，根據(jù)產(chǎn)品樣本選擇相應(yīng)的設(shè)備，組合成一個系統(tǒng)。但空調(diào)系統(tǒng)絕大部分時間是在不滿負(fù)荷的情況下工作。在不滿負(fù)荷工作的控制方式不合理，系統(tǒng)能效比會大大降低。現(xiàn)在空調(diào)系統(tǒng)在運行調(diào)節(jié)方式上，風(fēng)水系統(tǒng)主要是閥門（手動、自動閥門調(diào)節(jié)），主機(jī)利用卸荷方式，而這些方式是犧牲了阻力能耗來適應(yīng)末端負(fù)荷要求，造成運行成本居高不下。


　　若采用變頻控制，能量的傳遞和運輸環(huán)節(jié)控制為變水量（VWV）和變風(fēng)量（VAV），使傳遞和運輸耦合并達(dá)到溫差置換，其動力僅為其它控制系統(tǒng)的30～60%，而且節(jié)能是雙效的，因為對制冷主機(jī)的需求能耗同時下降。主機(jī)采用變頻節(jié)能控制，保持設(shè)計工況下的制冷劑運動的物理量（如溫差、壓力等）變化，節(jié)能較其它調(diào)荷方式明顯，如約克（YORK）的YT型離心式冷水機(jī)組，配置變頻機(jī)組在部分負(fù)荷下能效比可降至0.2kw/冷噸，可見變頻控制方式在空調(diào)系統(tǒng)中應(yīng)用前景十分廣闊。



　　1. 兼聽則明，偏信則暗。(宋司馬光資治通鑒)
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