NUMERICAL INVESTIGATION OF HEAT TRANSFER AND PRESSURE DROP OF CROSS-FLOW WOVEN WIRE MESH HEAT EXCHANGER
Usama, E., Abd el Aziz, N., aboelsoud, W., Mohammed, A. (2020). NUMERICAL INVESTIGATION OF HEAT TRANSFER AND PRESSURE DROP OF CROSS-FLOW WOVEN WIRE MESH HEAT EXCHANGER. EKB Journal Management System, 15(57), 1157-1168. doi: 10.21608/auej.2020.120381
Eslam Usama; Nabil Abd el Aziz; Walid aboelsoud; Ahmed Mohammed. "NUMERICAL INVESTIGATION OF HEAT TRANSFER AND PRESSURE DROP OF CROSS-FLOW WOVEN WIRE MESH HEAT EXCHANGER". EKB Journal Management System, 15, 57, 2020, 1157-1168. doi: 10.21608/auej.2020.120381
Usama, E., Abd el Aziz, N., aboelsoud, W., Mohammed, A. (2020). 'NUMERICAL INVESTIGATION OF HEAT TRANSFER AND PRESSURE DROP OF CROSS-FLOW WOVEN WIRE MESH HEAT EXCHANGER', EKB Journal Management System, 15(57), pp. 1157-1168. doi: 10.21608/auej.2020.120381
Usama, E., Abd el Aziz, N., aboelsoud, W., Mohammed, A. NUMERICAL INVESTIGATION OF HEAT TRANSFER AND PRESSURE DROP OF CROSS-FLOW WOVEN WIRE MESH HEAT EXCHANGER. EKB Journal Management System, 2020; 15(57): 1157-1168. doi: 10.21608/auej.2020.120381

NUMERICAL INVESTIGATION OF HEAT TRANSFER AND PRESSURE DROP OF CROSS-FLOW WOVEN WIRE MESH HEAT EXCHANGER

Journal of Al-Azhar University Engineering Sector
Article 22, Volume 15, Issue 57, October 2020, Page 1157-1168  XML PDF (489.9 K)
Document Type: Original Article
DOI: 10.21608/auej.2020.120381
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Authors
Eslam Usama; Nabil Abd el Aziz; Walid aboelsoud; Ahmed Mohammed
Mechanical power Engineering Department, Faculty of Engineering, Ain Shams University, Cairo, Egypt.
Abstract
In this paper, the insertion effect of a woven wire mesh to cross flow heat exchanger will be studied under steady state laminar flow conditions. 3-D numerical model was developed for the bare heat exchanger and the other wire mesh modules. The mesh wire diameter is 2.5 mm, porosity of 0.75, permeability of 10-10 and layer-to-layer spacings of (3,5,10,15,20 and 25 mm). Air flows with velocity range up to 3.5 cm/s through rectangular duct of 50 cm X 25 cm with inlet temperature of 25oC before it is heated with corrugated water tube (19 mm in diameter) with hot water inlet velocity of 1 m/s and temperature of 50 oC. The thermal and hydraulic performance were evaluated. Results showed that an enhancement in overall heat transfer coefficient was achieved of 250 % for the 3 mm spaced module while the air pressure drop increases significantly.
  
فی هذا البحث یتم دراسة تأثیر إدماج شبکة نحاسیة علی مبادل حراری تحت ظروف سریان ثابت صفائحی. و من اجل ذلک تم عمل نموذج ثلاثی الإبعاد للمبادل الحراری.قطر سلک الشبکة النحاسیة ( ٥,۲) مم و المسامیة تساوی ( ٧٥,۰) و نفاذیة تساوی        (۱۰-۱۰) متر۲ والتباعد بین طبقات الشبکة النحاسیة یتراوح من( ۳) إلى  (۲٥) مم. یسری الهواء بسرعة أقصاها ( ٥, ۳) سم\ثانیة خلال مسار ( ٥۰ سم فى ۲٥ سم) بدرجة حرارة ۲٥ درجة مئویة بینما تسری المیاه داخل أنبوبة معرجة ( ۱۹ ) مم بسرعة ( ۱) متر\ثانیة بدرجة حرارة (٥۰) درجة مئویة .تم تقییم الأداء الحراری والهیدرولکی و أظهرت النتائج تحسین یصل إلی( ۲٥۰) % فى معامل انتقال الحرارة الکلی للشبکة النحاسیة ذات التباعد ۳ مم.
 

Highlights

Cross Flow Heat Exchanger, Woven Wire Mesh, Porous Materials, Laminar

                          Flow, and Single Row.

 

مبادل حراری, سلک من شبکة نحاسیة, مواد مسامیة, سریان صفائحی , وصف واحد

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