This paper introduces the thermal conductivity instrument for low temperature frozen soil,including the design and development of cryogenic waters system, refrigeration system,temperature control system,temperature measurement system and data acquisition system.

The exploring experience of human body s physical extremity in cryo-water;

This paper introduces the operation method of low temperature cooling water system in coking plant of Jinan iron and steel groupThrough analysis on factors of influencing producing cold quantity of refrigerator,consisted of steam pressure,cooling water temperature,vaccum degree,water quality,etc,and process improvement the single operation of refrigerator has been achineved in summer.

Review on production of fresh meat by cryogenic cooling and freeze preservation;