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Heat medium liquid

A heat medium and antifreeze technology, applied in heat exchange materials, additives, petroleum industry, etc., can solve the problems of increased foaming of heat medium liquid, inability to circulate heat medium liquid, and increasing the volume of heat release bodies, etc.

Inactive Publication Date: 2017-12-01
OSAKA GAS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The reduction of these heat transfers has the effect of suppressing wasteful heat dissipation in the circulation flow path and the effect of suppressing the temperature change of the heat generating body caused by the external air environment, but on the other hand, in the heat releasing body, due to heat transfer The required heat release efficiency decreases due to the decrease in heat, so there is a problem that the volume of the heat release body must be increased in order to obtain the same amount of heat release as in the past.
[0012] Furthermore, when the above-mentioned polymer or surfactant is used to reduce the flow friction resistance of the heat medium liquid, the foamability of the heat medium liquid increases, and even a small amount of air bubbles will cause the generation of cavitation in the pump, which is easy to Problems such as pump idling and heat medium fluid not circulating

Method used

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Examples

Experimental program
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Effect test

Embodiment 1）

[0079] A heat medium solution for a test was prepared by adding xanthan gum (manufactured by Sanjing Co., Ltd., a type of water-soluble polymer compound) to the reference heat medium so as to have a test concentration. With regard to this test heat medium liquid, the pressure loss P and the temperature increase T were measured in the same procedure as the above reference heat medium. The test concentrations were 10mg / L, 100mg / L, 1g / L, 10g / L, and 100g / L. express the result in figure 1 middle. exist figure 1 , under the downstream side pressure P and downstream side temperature T of each straight pipe section, the ratio (=P / P0, T / T0) of the downstream side pressure P0 and the downstream side temperature T0 of the reference heat medium is obtained as the pressure loss rate , Temperature rise rate, expressed in percentage.

Embodiment 2）

[0081] A heat medium solution for a test was prepared by adding poly(ethylene glycol)(propylene glycol) copolymer stearate (manufactured by Nikko Chemical Karls Co., Ltd.) to the reference heat medium so as to have a test concentration. With regard to this test heat medium liquid, the pressure loss P and the temperature increase T were measured in the same procedure as the above reference heat medium. express the result in figure 2 middle.

Embodiment 3）

[0083]A heat medium liquid for testing was prepared by adding a sulfonated tetrafluoroethylene polymer (Wako Pure Chemical Industries, Ltd., product name: Nafion 20) to the reference heat medium to obtain a test concentration. With regard to this test heat medium liquid, the pressure loss P and the temperature increase T were measured in the same procedure as the above reference heat medium. express the result in image 3 middle.

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Abstract

Provided is a heat medium liquid which achieves a good balance between low flow frictional resistance and high heat transfer efficiency, while being suppressed in foamability. This heat medium liquid contains an antifreeze liquid. In addition, as a flow friction modifier, at least one compound selected from the group consisting of water-soluble polymer compounds, poly(ethylene glycol) (propylene glycol) copolymer fatty acid esters, sulfonated tetrafluoroethylene polymers, amine oxide compounds, polyethylene glycol dicarboxylic acid esters, polypropylene glycol dicarboxylic acid esters and poly(ethylene glycol) (propylene glycol) copolymer dicarboxylic acid esters is added into this heat medium liquid.

Description

technical field [0001] The present invention relates to a heat medium fluid containing an antifreeze fluid. Background technique [0002] For example, in cold and hot water for air conditioning, a heat generating body (system) and a heat releasing body (system) are connected via a circulation flow path, and a heat medium liquid circulates through the circulation flow. In such a system, the pipes used to circulate the liquid (such as water) used as the refrigerant (heat medium liquid) may have a length of several kilometers or more, and the liquid transport power is quite large, and it can be said that the operation of the system About 60% to 70% of the cost. [0003] As an effective method for reducing the liquid transport power, a method of remarkably reducing flow frictional resistance using a heat medium liquid containing a viscoelastic polymer or an aqueous surfactant solution has been proposed. [0004] It is said that this is caused by dissolving a specific polymer o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K5/10C09K3/00C09K5/20
CPCC09K5/10C09K3/00C09K5/20C10M145/02C10M147/02
Inventor 岸本章池本沙希
Owner OSAKA GAS CO LTD
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