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Method for determining mixing ratio of fluid, related method and device

A mixing ratio, fluid technology, applied to the device for measuring heat flow, automatic measurement technology determination, adjustable flow valve, water/glycol mixture field

Pending Publication Date: 2021-11-12
SIEMENS SWITZERLAND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Instead of automatically determining the mixing ratio, a manual, but error-prone approach requires input from the user

Method used

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  • Method for determining mixing ratio of fluid, related method and device
  • Method for determining mixing ratio of fluid, related method and device
  • Method for determining mixing ratio of fluid, related method and device

Examples

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Embodiment Construction

[0090] figure 1 Shown for determining the water / glycol mixture FL, H by means of the method according to the invention 2 Exemplary device 1 for measuring heat flow VS by method of mixing ratio of O. GLY. A pipe or a line section of, for example, a heating system is designated with reference number 2 . 2' designates the line section serving as the measuring line in which the measuring section MESS is located. In the measuring section MESS, an ultrasonic measuring device 3 with a first and a second ultrasonic transducer 31 , 32 is arranged. The measuring section MESS thus extends at least across the two ultrasound transducers 31 , 32 . The flow direction indicated by the arrow of the volume flow VS flowing in the line section 2 in this case runs parallel to the (line) center indicated by the dotted line. The volume flow rate VS is designated by the reference sign v and the average flow velocity by A, and the flow cross section of the line section 2 is designated by A. In th...

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PUM

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Abstract

The invention provides a method for determining a mixing ratio of fluit, a related method and device. The invention relates to the method for determining the mixing ratio R of a fluid comprising a mixture of at least two different fluids for a technical process in a device comprising: irradiating an ultrasonic signal with a transmission level along a measuring distance running inside a measuring section; measuring a receiving level of the ultrasonic signal at one end of the measuring distance; determining an ultrasonic attenuation of the ultrasonic signal attenuated by the fluid based at least on the transmission and receiving levels of the ultrasonic signal; measuring a temperature of the fluid flowing through the measuring section; and determining a mixing ratio of the at least two different fluids from the determined ultrasonic attenuation and from the measured fluid temperature. Furthermore, the invention relates to a device for executing the method of the invention and measuring a heat flow, and a heat flow measuring device.

Description

technical field [0001] The invention relates to the determination of the mixing ratio of a fluid, wherein the fluid is a mixture of at least two different fluids, in particular a water / glycol mixture. The mixture is intended for technical processes in installations or systems in particular heating, ventilation, air conditioning and refrigeration technology. A water / glycol mixture is typically used as the heat or cold transfer medium. In particular, the invention relates to the automatic measurement technique determination of the mixing ratio of the water / glycol mixture of the liquid flowing through the pipeline. [0002] Hereinafter, the mixing ratio of the water / ethylene glycol mixture is specified as the quotient of the volume fraction of ethylene glycol and the sum of the volume fractions of water and ethylene glycol. The quotient thus corresponds to the concentration of ethylene glycol and lies in the range from 0% to 100%. [0003] Furthermore, the invention relates to...

Claims

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Application Information

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IPC IPC(8): G01N29/032
CPCG01N29/032G01N2291/015G01N2291/0222G01N29/024G01N2291/0224G01N29/4436G01N29/326G01N29/4463G01N2291/02809G01N2291/102G01F1/668G01K17/10G01K11/24G05D11/132B01F23/452B01F23/4111G01N2291/106G01N29/4472
Inventor H·康拉德
Owner SIEMENS SWITZERLAND