Title:
METHOD FOR IMPROVING EFFICIENCY OF HEAT TRANSMISSION BY STEAM
Document Type and Number:
WIPO Patent Application WO/2023/276319
Kind Code:
A1
Abstract:
Provided is a method for improving the efficiency of heat transmission that can effectively improve the efficiency of heat transmission by steam in a low-pH steam system with a pH of less than 7. This method for improving the efficiency of heat transmission by steam is characterized in that a sarcosine compound is made to be present in the steam system with a pH of less than 7, during a step in which steam is introduced into a heat exchanger and an item to be heated is heated, or a step in which the steam is liquefied and condensed by being brought into contact with a cooling body. The sarcosine compound is preferably a long-chain sarcosine compound that is expressed by formula (I). Formula (I): R1C(=O)–N(CH3)–(CH2)n–COOR2 In formula (1), R1 is a C7-24 unsaturated or saturated straight-chain or branched hydrocarbon group, n is an integer from 0 to 2, and R2 is a hydrogen atom or a salt-forming group.
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Inventors:
WATANABE KAZUYA (JP)
KOIZUMI MASAKAZU (JP)
KOIZUMI MASAKAZU (JP)
Application Number:
PCT/JP2022/011876
Publication Date:
January 05, 2023
Filing Date:
March 16, 2022
Export Citation:
Assignee:
KURITA WATER IND LTD (JP)
International Classes:
C23F11/02; F26B21/00; F28B1/02; F28B1/06; F28F21/08
Foreign References:
| JP5332971B2 | 2013-11-06 | |||
| JP6506865B1 | 2019-04-24 | |||
| JP2019183380A | 2019-10-24 | |||
| JPH09264695A | 1997-10-07 | |||
| JP2012087213A | 2012-05-10 | |||
| JP2021110895A | 2021-08-02 |
Other References:
ICHIRO TANASAWA: "Seisan-kenkyu", vol. 30, June 1978, INSTITUTE OF INDUSTRIAL SCIENCE, article "Dropwise Condensation: The Way to Practical Applications", pages: 209 - 220
Attorney, Agent or Firm:
SHIGENO, Tsuyoshi et al. (JP)
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