Experimental study of a fog - atomizing evaporative cooler for compressor inlet air 壓氣機進(jìn)氣用霧化式蒸發(fā)冷卻器實驗研究
Then the pro ? models have been input into pro ? m , an automatic mesh generating software , to create the mesh system for numerical simulation . after defining some proper boundary condition , the flow analysis have been performed through the use of star ? d , a powerful cfd software . with some careful analysis of the simulation results and comparison of the two models , some guiding principles for the design optimization of the compressor inlet turning tubes have been concluded 論文主要工作包括:通過對壓氣機進(jìn)氣彎管幾何形狀的深入分析,利用三維建模軟件pro / e生成其三維幾何模型;利用網(wǎng)格自動生成工具pro - am ,根據(jù)pro / e生成的三維幾何模型生成了數(shù)值模擬所用的計算網(wǎng)格;對壓氣機進(jìn)氣彎管內(nèi)部流動進(jìn)行了詳細(xì)的氣動計算,對原進(jìn)氣彎管與新型進(jìn)氣彎管的計算結(jié)果做了對比分析,對其結(jié)構(gòu)的優(yōu)化設(shè)計提出了指導(dǎo)原則。
The design and research work on the inlet turning tube had been carried out mainly based on the experiment results and working experience . with the development of computational fluid mechanics ( cfd ) , it is quilt possible to simulate the flow inside the inlet turning tube accurately and get a better understanding of the flow phenomena in the flow field to guide the design , in this paper , detained simulations of the flow fields inside two different compressor inlet turning tubes have been presented 過去國內(nèi)對它的設(shè)計和研究主要借助于經(jīng)驗和利用實驗手段來進(jìn)行,本論文使用先進(jìn)的三維氣動計算技術(shù),借助功能強大的流場計算軟件,對壓氣機進(jìn)氣彎管內(nèi)部流動情況進(jìn)行了詳細(xì)和準(zhǔn)確的數(shù)值模擬,為壓氣機進(jìn)氣彎管的優(yōu)化設(shè)計提供更為準(zhǔn)確的理論依據(jù)及指導(dǎo)原則。
To improve the performance of ashp , an improved ashp system is presented . different from the original system , the new one can control the refrigerant flow rate by the sub - cooling of condenser and adjust the sup - heating of the compressor inlet vapor by the heater in accumulator . the simulation shows the new system not only has better dynamic characteristic of frost and defrost of ashp , but also has higher coefficient of performance 為改善空氣源熱泵機組的結(jié)霜除霜動態(tài)性能,提出了一種利用冷凝器過冷度來調(diào)節(jié)制冷劑流量,在氣液分離器里增加電熱裝置保持壓縮機進(jìn)口過熱度的改進(jìn)型系統(tǒng),結(jié)果表明這種改進(jìn)型系統(tǒng)不但可以改善系統(tǒng)的運行性能,同時能改善系統(tǒng)運行的經(jīng)濟(jì)性,為機組的技術(shù)升級和產(chǎn)品更新提供了一個新的途徑。