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熱泵用螺紋管換熱器實驗平臺的設計+CAD圖紙

時間:2019-06-14 22:24來源:畢業論文
本實驗臺是針對現有中國熱泵市場上新興的螺紋管換熱器的換熱性能測試而設計的。在海水養殖、泳池等需要恒溫的場所通常會使用熱泵機組對水加熱或制冷。由于水中含有大量的氯離

摘要:本實驗臺是針對現有中國熱泵市場上新興的螺紋管換熱器的換熱性能測試而設計的。在海水養殖、泳池等需要恒溫的場所通常會使用熱泵機組對水加熱或制冷。由于水中含有大量的氯離子,對不銹鋼、銅等傳統材料有嚴重腐蝕性,通常使用鈦作為換熱器材料。由于鈦價格昂貴,熱泵廠商為了降低成本,都盡力提高換熱器的換熱效率,減少金屬耗量,將鈦光管壓制成具有螺紋的螺旋管就是眾多舉措之一。但由于螺紋管螺距、螺深、螺紋形狀都對換熱器的換熱性能和阻力損失產生影響,螺紋管應用雖廣,但無論生產者還是使用者對于螺紋管的換熱性能和其影響因素都不了解,工程應用通常是選取較大的余量以確保產品性能,這造成了較大浪費,本實驗臺就是測試不同工況下,螺紋管的螺距、螺深、螺紋形狀都對換熱器的換熱性能和阻力損失的影響關系,同時也提供熱泵用其他種類換熱器的換熱系數和壓力損失的參數。36253
畢業論文關鍵詞:熱泵;螺紋管;換熱器;實驗
The Design of the Test Platform for the Thread Tube Heat Exchanger Used in the Heat Pump
Abstract:This experimental platform was designed for the test of heat exchanger made of screwed-pipe which is used in Chinese heat pump market. Water need to be heating or cooling in the occasion of sea culture or swimming pool, in which, heat pump system will be used. Heat exchanger works in that environment usually made of titanium, because there are much of the chloride ion and it will corrosion Stainless steel or copper. They all want improve the efficiency of heat transfer, in order to reduce the amount of Ti , because it is too expensive to use like Stainless steel. Screwed pipe is one of the most ways. But heat transfer performance and the pressure loss will be influenced by pitch, the depth of screw and thread form, thus, no matter Producers or users have no idea which parameter is the best. And when they use it they always make big allowance to ensure the availability of their product, it makes too much waste. This test platform is aimed to know the Relationship between heat transfer performance ,the pressure loss and pitch, the depth of screw ,thread form. Meanwhile, it offer the test for Heat transfer coefficient and pressure loss of other heat exchanger.

源¥自%六^^維*論-文+網=www.aftnzs.live


Keywords:  heat pump;screwed pipe;heat exchanger;experiment
目  錄
摘  要    1
Abstract    2
目  錄    3
1  緒論    1
2  初步設計    3
2.1功能分析    3
2.1.1測試換熱器水流的阻力特性、氟利昂的流動阻力特性    3
2.1.2不同制冷劑在同種工況下的換熱效果    3
2.1.3同種制冷劑不同流速下的換熱效果和阻力特性    4
2.1.4水的不同流速對換熱效果的影響    4
2.1.5不同換熱器在各種工況下的換熱能力的對比    4
2.2結構設計    5
2.2.1針對“測試換熱器水流的阻力特性、氟利昂的流動阻力特性”    4
2.2.2針對“不同制冷劑在同種工況下的換熱效果”    5
2.2.3針對“同種制冷劑,不同流速下的換熱效果和阻力特性”    6
2.2.4針對“水的不同流速對換熱效果的影響”    6
2.2.5針對“不同換熱器在各種工況下的換熱能力的對比”    7
2.2.6整體設計草圖    8
2.3細節設計    9
2.3.1溫度計安裝設計    9
2.3.2壓力表的安裝    9
2.3.3流量計安裝----渦街流量計    10 熱泵用螺紋管換熱器實驗平臺的設計+CAD圖紙:http://www.aftnzs.live/jixie/20190614/34614.html
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