พ่วงเจริญชัย [1] ทำการทดลองการจำลอง

Charoen Chai-trailer [1] try to model heat transfer inside tube heat by Panel methodology elements for a night light distribution, the temperature at the location of the replica of the heat pipe Panel, size 80 x 350 x 282.5 mm. Look inside the tube of a group of vertical overlap diameter 10 mm the model boundary conditions. Given the temperature at the entrance to 20°, 25°, 30° and 35°, respectively. The section within the surface layer of the model determine the temperature heat pipe Panel, fixed at 50°, 60°, 70° and 80°, respectively. The surrounding wall insulated (heat loss) from the results of research, it was found that the temperature is increased, respectively, and had consistently and increasingly, over time, the value of the model's internal temperature will be constant. After that, no matter how much time it will be added to the value of the temperature of different positions within the model will not change. Miyagi Prefecture and the Board [4] tested heat transfer in parallel channel with flow through the fins triangle. The performance of heat transfer in parallel channel with flow through the fins triangle where heat transfer at constant (constant heat flux) this consider a project about the proportion of the height of the cooling fins per pitch (e/D) will have a value of 0.125, 0.187 and 0.25 to put plate alignment, indentation, and fins, and there is a constant equal to the stage Pittsburgh, 20 mm, as in Picture 2.1.From the experiments, it was found that an increase of the proportion of the height, spacing sheets of triangular fins per channel in parallel. (E/D) is equal to 0.125, 0.187 and 0.25 can increase performance and 2.28 2.32 at 1.58, place the plate in a fin. Best holder plate fins can enhance the indent is 1.62, 2.25 and 2.28 respectively. Summary of experiments that heat transfer even more. West Cross pressures that occur, there is the increased value. Currency Board [5] lost and try to heat transfer in a smooth flow through parallel with fins placed photos with heat transfer constant (Constant Heat Flux) will be taken into account in proportion to the height of fins per distance heating pad (e/D), and formatting the plate fins that influence coefficients. Heat transfer coefficients (Nusselt Number) and friction (Friction factor), with the scope of study of the figures, from the ray-Nold (Reynold Number) range between 500 – 3000 in proportion to the height of parallel channels spaced fins per plate (e/D) is equal to 0.20, 0.25 0.33 to organize plates, flanges, paste and indent and fixed phit stage equal to 40 mm according to the image 2.2.From the experiments, it was found that the placement of a rectangular-shaped fins V, heat transfer increases over fins, a widely deployed straight. (The transverse rib) increases in proportion to the height of parallel channels spaced fins per sheet (e/D) Can improve heat transfer, but the pressures surrounding the fall happened to be increased as well. [6] and the density Board made an experiment study on heat transfer in circular tubes with heat transfer, increased. But the pressure fell to straddle that happen to be increased as well. หนาแน่น และคณะ [6] ทำการทดลองการศึกษาการถ่ายเทความร้อนในท่อกลมที่มีการติดตั้งชุดสร้างความปั่นป่วนและการไหลหมุนวน การถ่ายเทความร้อนจากการสอดใส่กรวยวงแหวนสร้างความปั่นป่วนและการไหลหมุนวน การถ่ายเทความร้อนจากการสอดใส่กรวยวงแหวนสร้างความปั่นป่วนร่วมกับแผ่นบิดสร้างการไหลหมุนวนในท่อกลมโดยให้ความร้อนคงตัว ในการทดลองกรวยแหวนจะสอดใส่ตลอดความยาวท่อทดสอบที่มีขนาดเส้นผ่านศูนย์กลางที่รูทางเข้าและทางออกเท่ากับ 46 มิลลิเมตร (D) ในการทดลองได้สอดใส่แผ่นบิดตลอดความยาวท่อที่ทำมาจากแผ่นเหล็กบาง 1มิลลิเมตร และนำมาบิดที่ระยะพิตช์ 2 ค่า คือ y = (p/w) = 3.75 และ 7.5 ตามลำดับ ใช้อากาศในการไหลและทดสอบในช่วงตัวเลขเรย์โนลด์ (Re) เท่ากับ 6000 -26000 ซึ่งจากการทดลองมีผลทำให้อากาศภายในท่อเกิดความปั่นป่วนและการไหลหมุนวนทำให้ชั้นชิดผิวบางลงและหน่วงการไหลในท่อยาวนานขึ้นจึงทำให้ค่าการถ่ายเทความร้อนในรูปของตัวเลขนัสเซลท์ (Nu) เพิ่มขึ้นเมื่อเปรียบเทียบกับท่อเปล่าประมาณ 2 ถึง 4 เท่า ขณะที่ค่าความเสียดทานสูงขึ้นเช่นเดียวกัน จากการทดลองพบว่าการสอดใส่กรวยวงแหวนร่วมกับแผ่นบิดที่ระยะ บิดแคบสุดที่ y=3.75 จะให่ค่าตัวเลขนัสเซลท์สูงสุดและมากกว่าระยะบิด y= 7.5 โดยเฉลี่ยเท่ากับ 12% From the research in the past mainly focus on installing the fins (Ribs) styles to enhance the heat transfer of heat exchanger, but what is the probability that occurs in the abdomen, which is supposed to occur is less because it is being wasted driving. As a result, expenses for system installation and more. In order to obtain the flow rate of the fluid nature of the work required. Therefore, this project focusing on the heat exchanger plates, Groove erosion within the heat exchanger to reduce friction value from the use of fins, such as the heat exchanger plates (Plate Heat Exchanger), but still have the ability to have good cooling by a battle between their trial sa aluminum aluminum roll Groove erosion phases etc.

Brahmans trailers [1] conducted simulations of heat transfer tubes within the panel heating method by Finite Element. To find the temperature distribution at various positions. A replica of the heat pipe panel size. 80x282.5x350 mm. The group of inner tubes arranged in a horizontal overlap diameter 10 mm, the model boundary conditions. The temperature at the inlet is equal to 20 degrees, 25 degrees, 30 degrees and 35 degrees respectively, the model determines the temperature on the surface of the panel casing provides constant heat at 50 degrees, 60 degrees, 70 degrees. 80 degrees respectively insulated by the wall. (No heat loss), the results showed that temperatures will increase the value, respectively, and the rates are rising steadily. And over time, the temperature of the interior of the model is constant. After that, no matter how much more time will be added. However, the temperature at different locations. Internal models are unchanged
Ma Jun Kun et al [4] conducted heat to flow through channels parallel with triangular fins. To optimize heat transfer in a parallel flow channels with triangular fins. The heat transfer constant (constant heat flux), this project considering the ratio of the height of the fins to distance heating (e / D) is equal to 0.125, 0.187 and 0.25 Deployment fins are placed. directly opposite each other Pitt and is still equal to 20 mm in 2.1 images
from the experiment. The increase of the ratio of height triangle fin spacing on a sheet of parallel channels (e / D) is equal to 0.125, 0.187 and 0.25 can optimize 1.58, 2.28 and 2.32 at the plate fin in line. The fins placed opposite each other can optimize 1.62, 2.25 and 2.28 respectively hypothesis that. The heat even more. The pressure drop occurs, they have increased as well,
the currency fell et al [5] The experiment of heat transfer in laminar flow through channels parallel with fins placed V-shaped with heat. Static (Constant Heat Flux) education will be considered. The ratio of fin height to distance plates (e / D) and formatting fins affecting coefficient. Heat transfer (Nusselt Number) and coefficient of friction (Friction factor) The scope of the study, the number Ray Arnold (Reynold Number) range between 500-3000 proportion height fin the distance plate channel. Parallel heat (e / D) is equal to 0.20, 0.25, 0.33, organize and fins placed opposite each other. Pitts and Mike constant equal to 40 mm by 2.2 images
from the experiment. The V-shaped arrangement of rectangular fins to transfer heat more than the placement of the cross fin (transverse rib) an increase in the ratio of fin height to distance plate. Parallel channels (e / D) can be optimized to increase heat transfer. But the pressure drop that occurs, there will be increased as well,
and the density [6] conducted a study of heat transfer in a tubular heat exchanger to increase. But the pressure drop occurred. There is increasing as well,
and the density [6] conducted a study of heat transfer in a circular pipe installation kit creates turbulence and swirling flow. Heat from the implant cone ring creates turbulence and swirling flow. Heat from the implant cone ring created a stir with twisted sheet flow generated by the rotation of the tubular heat stabilizers. In experiments cone ring implant length tube with a diameter of the hole entrance and exit is 46 mm (D) in the experimental implant sheets twisted length pipe made ​​from sheet steel 1 mm and lead. The twist at the second pitch is y = (p / w) = 3.75 and 7.5 respectively in the air flow and test the Ray Reynolds number (Re) 6000 -26 000 of which were from there. The air inside the pipe caused a stir and flow spiral makes up the skin and delay the flow in the pipe longer, so the heat in the form of numbers Nasser Celt (Nu) increase compared to the pipe. is about two to four times as high as the friction. The results showed that the implant cone ring with narrow twisting term sheet twists at y = 3.75 to the maximum number Nasser Celt and more twisted-term average of y = 7.5. 12%
of research in the past focused mostly equipped with fins (Ribs) ways to enhance the heat transfer of heat exchangers. But what followed was the friction that occurs. This is what should happen to a minimum due to the power consumption of power. The cost of installing the system and more. To get the flow rate of fluid required by the nature of such work
, this project is focused on the heat exchanger plate grooving internal heat exchanger to reduce the friction of the fins as air. Plate heat exchangers (Plate Heat Exchanger) but still has the ability to heat well. EDUCATION Experimental between aluminum sheet and aluminum tumbled another term.

Prosperous [] victory Trailer 1 experiment modeling of heat transfer in heat pipe panel by finite element method. To find the temperature distribution at various locations. In the model of the heat pipe panel size 80x282.5x350 mm. With the characteristics of the inner tubes is the sort 10 overlap diameter mm The boundary condition model. The temperature at the entrance of the equals 20 degrees, 25 degrees,