| Title |
The Study on the Performance Characteristics due tothe Degree of Superheat in NH3 Refrigeration System(III) |
| Keywords |
CFC ; 염화불화탄소 ; HCFC ; 염화불화탄화수소 ; Degree of superheat ; 과열도 ; Con-densing pressure ; 응축압력 |
| Abstract |
Recently, production and use of freon substances are restrained due to deple-tion of ozone layer and grobal warming. In this aspect of environmental problems, the best solution is to use the natural refrigerant such as ammonia. Thus, this study is to find the optimal operating conditions by comparing the performance between the shell and tube type and shell and disk type heat exchangers using the ammonia refrigerant, and to verify the su-periority of the shell and disk type heat exchanger that is not used in field of refrigeration and air conditioning. Finally, this study shows that the shell and disk type heat exchanger is applicable to the ammonia refrigeration system, and this system minimizes the refrigerant charge and installation space. |