A cooling water pipe wall heat exchange coefficient testing device and testing method
A technology of heat exchange coefficient and cooling water pipe is applied in the field of testing the heat exchange coefficient device of cooling water pipe wall, which can solve problems such as incompatibility, and achieve the effects of low cost, easy garbage disposal and simple structure
Inactive Publication Date: 2018-04-03
HOHAI UNIV
View PDF3 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
J.-K. Yang, Y. Lee, J.-K. Kim. Heat transfer coefficient in flow convection of pipe-cooling system in massive concrete. JAdv Concr Technol, 9 (1) (2011), pp. 103–114. Use a new device to calculate the heat exchange coefficient. The total length of the water pipe is only 1 meter. When this device is used, the surface temperature is controlled to a certain value, which is not in line with the actual situation.
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0026] The present invention will be further described below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solution of the present invention more clearly, but not to limit the protection scope of the present invention.
[0027] Such as figure 1 and figure 2 As shown, a cooling water pipe wall heat exchange coefficient testing device is characterized in that it includes a sandbox 1, a cooling water pipe 2, a temperature probe 4, a heating rod 3 and a thermometer, and the sandbox 1 is a length × width A standard cuboid with a height of 1.7×1.2×0.83m is the main frame of the device. The 60-meter-long cooling water pipes inside the sandbox are evenly arranged in 5 layers in a serpentine shape, and the horizontal and vertical spacing of the cooling water pipes are 16.5× 16.5cm, the heating rods 3 are 24 in total, evenly laid in the middle of two layers of water pipes, a total of 4 layers, the horizontal and vertic...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a cooling water pipe wall heat exchange coefficient testing device, which is characterized by comprising a sandbox, a cooling water pipe, a temperature probe and a heating rod. Heating rods are arranged between the water pipes, and temperature probes are arranged at intervals from the inlet of the cooling water pipes; the device and method for testing the heat exchange coefficient of the cooling water pipe wall according to the present invention can be set by the sandbox, the cooling water pipe, the temperature probe and the heating rod. The heat exchange coefficient of the water pipe wall under the conditions of different materials, different water temperatures and flow rates can be obtained by recycling this device. The temperature probes are arranged at intervals at the inlet. If the probes are found to be damaged, they can be replaced in time without affecting the test.
Description
technical field [0001] The invention relates to a device for testing the heat exchange coefficient of a cooling water pipe wall, in particular to a sandbox for testing the heat exchange coefficient of a water pipe wall in which sand is used instead of concrete. Background technique [0002] After the self-cooling water pipe was applied in the American concrete dam-Hoover gravity arch dam in the 1930s, it was found that it could significantly reduce the maximum temperature inside the concrete. Later, because of its flexibility, adaptability and versatility, it has been widely used in the construction of concrete dams in various countries. [0003] The cooling effect of the water pipe is related to many factors, among which the more important is the relationship between the heat exchange coefficient of the water pipe and its material and the temperature and flow rate of the cooling water. Their values will affect the size of the concrete stress field during the construction ...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): G01N25/20
Inventor 强晟别亚静沈振中
Owner HOHAI UNIV