winter draft 中文意思是什麼
winter draft
解釋
冬季吃水-
This thesis chiefly analyzes the problem of exchanging heat quantity and the methods of the improvement of cooling tower in power station, compares and analyses the advantages and disadvantages of it. this thesis will discuss how to prevent natural - draft counter - flow wet cooling tower from freezing in winter, and compute the areas of draught deflectors
本文針對自然通風逆流式冷卻塔冬季運行時的防凍處理，及預防結冰所應採取的措施進行研究和計算，提出以增加或減少擋風板的高度來控制出塔水溫的方法，並對其進行計算分析。 -
Through having done field surveys in the campus of chongqing university, this paper tested classroom indoor and outdoor climate parameters in june, july and september of 2005, it used questionnaire to acquire subjects ’ thermal sense, draft sense and humidity sense in classroom each month, and programmed composition to compute predicted mean vote and compared pmv with the field testing results of mean thermal sensation vote. it is discovered that pmv is overvalued the college student ’ thermal sensation in chongqing. it finds that people in chongqing adapt to the typical summer hot and winter cold sweltering weather
對重慶地區高校教室的現場調查，測試了重慶大學2005年六月、七月和九月教室室內外熱環境參數，通過採用問卷主要掌握了受測對象教室里的冷熱感、氣流感和潮濕感，通過編製程序求得預測平均熱感覺評價pmv的值，比較pmv和問卷調查得到的平均熱感覺mtsv ，發現pmv預測值高估了重慶地區高校學生的熱感覺，這里的人群對重慶這種夏熱冬冷地區比較典型的悶熱氣候具有一定的熱適應性，對現場問卷調查的結果進行分析，得出了室內空氣溫度、氣流速度、相對濕度與人體主觀感覺之間的回歸曲線，發現重慶地區高校學生熱中性時的空氣溫度為25 . 5 ， fanger根據歐美人群調查得到的公式計算出的預測熱感覺為中性時的空氣溫度為25 . 0 ，兩者相差0 . 5 。 -
Freeze of natural draft counter - flow cooling tower in winter and its treatment
自然通風逆流式冷卻塔冬季結冰原因及處理
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