熱交換器性能以及應(yīng)用
- 發(fā)布時(shí)間：2020-06-24
- 發(fā)布者： 百度文庫(kù)
- 來(lái)源： 百度文庫(kù)
- 閱讀量：
板式熱交換器的性能主要取決于板片的材質(zhì)、數(shù)量及熱交換的面積，工藝，結(jié)構(gòu)緊湊性等。我們就先來(lái)說(shuō)板片。板片的材質(zhì)有碳鋼、不銹鋼、鋁及鋁合金、黃銅、蒙乃爾合金、鎳、鉬、鈦等，材質(zhì)不同，價(jià)格不同。使用廣泛的是不銹鋼，有的用戶(hù)需要處理含氯或其他腐蝕性介質(zhì)時(shí)，會(huì)采用耐腐性能好的鈦材質(zhì)，但價(jià)格很貴。
工程應(yīng)用中，熱負(fù)荷和工況是多種多樣的，板式熱交換器的版型和幾何尺寸的規(guī)格不同，價(jià)格差距明顯。其中密封墊片的承壓質(zhì)量和額外的工況配置都會(huì)增加成本。密封墊片主要是為了防止流體的外漏和兩流體之間內(nèi)漏，運(yùn)行中承受壓力、溫度及工作流體的侵蝕，因此要求具備良好的彈性，一般采用橡膠材質(zhì)，有丁晴橡膠、三元乙丙橡膠、氟橡膠、氯丁橡膠、硅橡膠及石棉纖維板。工況不同，使用材質(zhì)要求不同，價(jià)格也就參差不齊。額外配置包括根據(jù)用戶(hù)需求配置加熱、制冷、凈化、消聲等不同功能段的結(jié)構(gòu)。
另外板片的厚度通常在0.5~1.5㎜的范圍內(nèi)，按工況需要，選擇的厚度不同，價(jià)格也略微有些偏差。板片的波紋形式不同會(huì)對(duì)板式熱交換器的傳熱及流動(dòng)阻力有較大影響，根據(jù)不同工況場(chǎng)合使用不同的波紋板片，一般以人字形波紋板和水平平直波紋板為主，價(jià)格也會(huì)有所不同。當(dāng)生產(chǎn)上要求改變工藝條件和產(chǎn)量時(shí)，增減板片的數(shù)量或改變板片組裝流程通道形式，這些操作都會(huì)影響價(jià)格的高低。
In addition, the thickness of the plate is usually in the range of 0.5-1.5. According to the requirements of working conditions, the thickness of the plate is different, and the price is slightly deviated. The different corrugated forms of plate have great influence on heat transfer and flow resistance of plate heat exchanger. According to different working conditions, different corrugated plates are used. Generally, herringbone corrugated plates and horizontal straight corrugated plates are the main ones, and their prices are also different. When the production requirements change the process conditions and output, increasing or decreasing the number of sheets or changing the form of sheet assembly process channel, these operations will affect the price.
工程應(yīng)用中，熱負(fù)荷和工況是多種多樣的，板式熱交換器的版型和幾何尺寸的規(guī)格不同，價(jià)格差距明顯。其中密封墊片的承壓質(zhì)量和額外的工況配置都會(huì)增加成本。密封墊片主要是為了防止流體的外漏和兩流體之間內(nèi)漏，運(yùn)行中承受壓力、溫度及工作流體的侵蝕，因此要求具備良好的彈性，一般采用橡膠材質(zhì)，有丁晴橡膠、三元乙丙橡膠、氟橡膠、氯丁橡膠、硅橡膠及石棉纖維板。工況不同，使用材質(zhì)要求不同，價(jià)格也就參差不齊。額外配置包括根據(jù)用戶(hù)需求配置加熱、制冷、凈化、消聲等不同功能段的結(jié)構(gòu)。
另外板片的厚度通常在0.5~1.5㎜的范圍內(nèi)，按工況需要，選擇的厚度不同，價(jià)格也略微有些偏差。板片的波紋形式不同會(huì)對(duì)板式熱交換器的傳熱及流動(dòng)阻力有較大影響，根據(jù)不同工況場(chǎng)合使用不同的波紋板片，一般以人字形波紋板和水平平直波紋板為主，價(jià)格也會(huì)有所不同。當(dāng)生產(chǎn)上要求改變工藝條件和產(chǎn)量時(shí)，增減板片的數(shù)量或改變板片組裝流程通道形式，這些操作都會(huì)影響價(jià)格的高低。
In addition, the thickness of the plate is usually in the range of 0.5-1.5. According to the requirements of working conditions, the thickness of the plate is different, and the price is slightly deviated. The different corrugated forms of plate have great influence on heat transfer and flow resistance of plate heat exchanger. According to different working conditions, different corrugated plates are used. Generally, herringbone corrugated plates and horizontal straight corrugated plates are the main ones, and their prices are also different. When the production requirements change the process conditions and output, increasing or decreasing the number of sheets or changing the form of sheet assembly process channel, these operations will affect the price.
