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Method for reducing supercooling degree of water

A technology of supercooling and seawater, applied in chemical instruments and methods, heat exchange materials, ice making, etc., can solve the problems of increasing energy consumption of ice machines and reducing water supercooling, so as to reduce energy consumption and eliminate Subcooling degree and the effect of improving ice-making efficiency

Active Publication Date: 2019-11-22
ZHEJIANG OCEAN UNIV
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Problems solved by technology

[0004] The purpose of the present invention is to provide a method for reducing the degree of water supercooling aimed at the technical problem that the energy consumption of the ice maker increases due to the existence of the supercooling phenomenon in the fluidized ice preparation process, and to provide a method for reducing the degree of supercooling of water. By adding nano-chitosan to the water, effective reduce water subcooling

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  • Method for reducing supercooling degree of water
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  • Method for reducing supercooling degree of water

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Embodiment Construction

[0028] The technical solution of the present invention will be further described below through specific embodiments and accompanying drawings. Unless otherwise specified, the raw materials used in the examples of the present invention are commonly used raw materials in the art, and the methods used in the examples are conventional methods in the art.

[0029] The term "fluidized ice" in the present invention refers to a solid-liquid two-phase solution containing suspended ice crystal particles, wherein the ice crystal particles are tiny, with a diameter of no more than 1 mm, strong fluidity, and can be transported by pumps.

[0030] The term "water subcooling" in the present invention refers to the difference between the actual freezing temperature of water and the theoretical freezing temperature.

[0031] Water, including tap water, pure water, mineral water or sea water, can be divided into four stages theoretically when it cools down to form ice crystals, such as figure 1...

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Abstract

The invention relates to the technical field of ice making, in particular to a method for reducing the supercooling degree of water in the ice making process, and the method comprises the step of adding nano chitosan into water. The water can be one or more of tap water, pure water, mineral water and seawater.

Description

technical field [0001] The invention relates to the technical field of ice making, and relates to a method for reducing the degree of water supercooling in the ice making process. Background technique [0002] Fluidized ice has the advantages of small ice crystals, round particles, and easy access. It is used for rapid cooling of aquatic products without piercing the skin of aquatic products. It can effectively improve the quality of aquatic products and extend the shelf life. It has a wide range of applications in cold chain logistics. prospect. However, due to the supercooling phenomenon in the actual ice-making process, the actual ice-making temperature needs to be lowered below the theoretical temperature to start icing. Generally, the solution has a supercooling degree of 5.0-6.0°C, while the supercooling degree of seawater is even higher. As a result, the ice machine needs to work at an extremely low evaporation temperature, which increases energy consumption and hind...

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Application Information

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IPC IPC(8): C09K5/06F25C1/00
CPCC09K5/066F25C1/00
Inventor 沈思佳赵文琪韩志马庆文高军凯陈妍
Owner ZHEJIANG OCEAN UNIV
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