Presents the on - off control mode of refrigerating machine by supply and return water temperature difference and load proportion with an example 摘要以具體的工程實例介紹了利用供回水溫差和機組負荷百分數(shù)進行機組臺數(shù)啟停控研究制的方法。
Presents two common heat recovery methods for water cooling chillers . recommends the control scheme by monitoring the return water temperature . presents two design schemes for chilled water systems 摘要介紹了兩種常見的水冷冷水機組熱回收方式。推薦采用熱水回水溫度控制方案。介紹了冷水系統(tǒng)的兩種設(shè)計方案。
The hvac system did not work well in yifu library of beijing university of technology , so we have a local investigation . finally we found out the reason for “ cold in winter and hot in summer ” . in may eighth , we tested the temperature of reading room 、 office ; supply and return water temperature ; water flow and the velocity of fan coil units . we simulate the library with energyplus , which is developed by u . s . a , compared the simulation results with the true temperature and they anastomosed well . on the basis of good simulation results , we simulate the hot day in summer and the cold day in witer and get the temperature of the reading room and the office 于空調(diào)系統(tǒng)開啟的條件下測試了館內(nèi)各功能房間的溫度;供、回水溫度及流量;風機盤管的出風速度。又運用美國新一代能耗分析軟件energyplus對當日館內(nèi)的溫度進行模擬,將模擬值與實測值進行比較,驗證兩者基本吻合。進一步模擬出夏季與冬季設(shè)計日圖書館內(nèi)各功能房間的室內(nèi)溫度,作為分析依據(jù)。