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Novel designs for improving the performance of hollow fiber membrane distillation modules

หน่วยงาน Nanyang Technological University, Singapore

รายละเอียด

ชื่อเรื่อง : Novel designs for improving the performance of hollow fiber membrane distillation modules
นักวิจัย : Yang, Xing , Wang, Rong , Fane, Anthony Gordon
คำค้น : DRNTU::Engineering::Environmental engineering::Water treatment.
หน่วยงาน : Nanyang Technological University, Singapore
ผู้ร่วมงาน : -
ปีพิมพ์ : 2554
อ้างอิง : Yang, X., Wang, R., & Fane, A. G. (2011). Novel designs for improving the performance of hollow fiber membrane distillation modules. Journal of Membrane Science, 384(1–2), 52-62. , 0376-7388 , http://hdl.handle.net/10220/10024 , http://dx.doi.org/10.1016/j.memsci.2011.09.007 , 173003
ที่มา : -
ความเชี่ยวชาญ : -
ความสัมพันธ์ : Journal of membrane science
ขอบเขตของเนื้อหา : -
บทคัดย่อ/คำอธิบาย :

Five types of novel hollow fiber module configurations with structured-straight fibers, curly fibers, central-tubing for feeding, spacer-wrapped and spacer-knitted fibers, have been designed and constructed for the direct contact membrane distillation (DCMD) process. Their module performances were evaluated based on permeation flux experiments, fluid dynamics studies, and tracer-response tests for flow distribution as well as process heat transfer analysis. The novel designs showed flux enhancement from 53% to 92% compared to the conventional module, and the spacer-knitted module had the best performance. The fluxes of all the modified configurations, except the structured-straight module, were independent of the feed flow velocity, and the modules with undulating membrane surfaces (curly and spacer-knitted fibers) were able to achieve more than 300% flux improvement in the laminar flow regime. The improved performance was attributed to the improved fiber geometries or arrangements that can provide effective boundary layer surface renewal and more uniform flow distribution, confirmed by the sodium chloride tracer response measurements. The heat transfer analysis underscores the advantage of the module with curly fibers with the least temperature polarization effect (temperature polarization coefficient = 0.81–0.65 at Tm= 303–333 K), which is favorable for enhancing permeation flux.

บรรณานุกรม :
Yang, Xing , Wang, Rong , Fane, Anthony Gordon . (2554). Novel designs for improving the performance of hollow fiber membrane distillation modules.
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
Yang, Xing , Wang, Rong , Fane, Anthony Gordon . 2554. "Novel designs for improving the performance of hollow fiber membrane distillation modules".
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
Yang, Xing , Wang, Rong , Fane, Anthony Gordon . "Novel designs for improving the performance of hollow fiber membrane distillation modules."
    กรุงเทพมหานคร : Nanyang Technological University, Singapore, 2554. Print.
Yang, Xing , Wang, Rong , Fane, Anthony Gordon . Novel designs for improving the performance of hollow fiber membrane distillation modules. กรุงเทพมหานคร : Nanyang Technological University, Singapore; 2554.