公开(公告)号：JPH01252875A

公开(公告)日：1989-10-09

申请号：JP7839288

申请日：1988-03-31

Applicant: AGENCY IND SCIENCE TECHN

Inventor： KOSAKA MINEO ,  ASAHINA TADASHI ,  TAJIRI KOJI ,  SHIRAYANAGI ITARU

IPC: F25B15/00 ,  B01D53/26 ,  C09K5/00 ,  C09K5/04

Abstract: PURPOSE:To obtain an excellent vapor absorbing performance in a absorbing medium and make it possible to use it stably by using a medium to absorb vapor which includes at least one kind of nitrate selected from nitrates of alkali metal and nitrates of alkaline earth metal. CONSTITUTION:As a vapor absorbing medium the water solution of a nitrate of alkali metal, water solution of alkaline earth metal, and the water solution of a mixture of a nitrate of alkali metal and nitrate of alkaline earth metal are used. As a nitrate of alkali metal lithium nitrate, sodium nitrate, and potassium nitrate are, for instance, used. As a nitrate of alkaline earth metal calcium nitrate, magnesium nitrate, strontium nitrate, etc. are, for instance, used. Those nitrates are used individually or in a combination of more than two nitrates. The vapor absorbing medium in the invention has not only an excellent vapor absorbing capability but also a very low corrosiveness for metal materials and it is used preferably as a working medium for vapor absorbing in a chemical heat pump of absorption type, its refrigerator, etc.