介質損失角 的英文怎麼說
中文拼音 [jièzhísǔnshījiǎo]
介質損失角
英文
dielectric loss angle-
Test methods for determining electrical properties of electric cables and wires. dielectric dissipation factor measurement
電線電纜電性能試驗方法介質損失角正切試驗The electric field distributions of cleanness and covered with snow, the electric field variety of covered with ice, and the break down electric strength of covered with snow and ice were analyzed. the affect of the angle of medium loss for insulation performance was analyzed
對冠雪絕緣子與清潔（無雪）絕緣子的電場分佈作了比較；分析了覆冰后電場分佈的變化；對覆冰、冠雪時的擊穿場強進行了分析；還分析了介質損失角正切對絕緣性能的影響等。According to the academic analysis of insulation, this paper expatiates the examination ways of electric power insulates, such as shaking - watch, the direct current withstand voltage and measure leakage current, alternating current withstand voltage, measure dielectric loss angle, on - line inspections etc., to be used to direct the installations and debugging of electrical engineering
通過絕緣介質的理論分析，闡述了電氣設備絕緣檢查通常的搖表檢查，直流耐壓及漏泄電流的測量，交流工頻耐壓，介質損失角的測量，在線檢測等方法，以用來指導電氣工程施工的安裝和調試。The bigger the diameter, the high the heat efficiency, but the weak the temperature increasing ability, length has less effect on the heat efficiency, tilt angle has less effect on the flow field and temperature field while it is larger than 30 degree, vacuum degree and emissivity have great effect on the flow field and temperature field while there is a great temperature difference between the liquid in the tube and the surroundings, the furring has less effect on the heat transfer but should be cleaned up in 3 - 5 years because of poor water quality, the higher the solar flux or the more the temperature difference between the liquid and the surrounding, the more the heat loss and the lower the heat efficiency
分析了各種因素對太陽能真空集熱管流場和溫度場的影響。直徑越大，熱效率越高，但升溫能力弱；長度對熱效率影響不大；傾斜角度大於30后，自然對流已經能夠充分進行，考慮以能夠吸收到最大太陽輻射為主；真空度和發射率對熱效率和溫度場影響很大，尤其是在介質溫度與環境溫度差異比較大時；水垢對傳熱影響較小但由於水質的問題應該被3 5年清洗一次；太陽輻射強度越大，介質溫度與環境溫度差異越大，熱損失越大，效率越低； 4分享友人