Cold storage frost severely restricted its economy

to solve this problem

chemical adsorption dehumidification frost prevention technology has been paid great attention. Some kind of composite adsorbents have been made comparing metal halide which has great water adsorption capacity with molecular sieve

which has good heat and mass transfer properity

and is easy to shape. Moisture adsorption performance testing system has been constructed suitable for material under low temperature. A great many of tests have been made. The moisture adsorption capacity and rate of a variety of materials in -5℃

-10℃

-15℃ have been given. It is shown that the adsorption performance of compound adsorbent was obviously improved compared with pure molecular sieve. 13X molecular sieve dipping solution concentration 20% of NaBr had better amount of moisture adsorption and rate

less loss in the process of composition

low cost

which could be used in cold storage dehumidification system as a composite adsorbent.