Experimental　research　on　the　crystallization　process　of　the　gas　hydrate　HCFC141b　is　performed　for　this　paper.　The　influences　of　different　proportions　of　calcium　hypochlorite　or　benzenesulfonic　acid　sodium　salt　on　the　crystallization　process　are　studied.　The　results　show　that　the　degree　of　subcooling　of　formation　is　obviously　decreased,　and　the　formation　rate　of　the　gas　hydrate　is　greatly　accelerated　by　adding　reasonable　proportions　of　the　additives.　The　degree　of　subcooling　of　formation　decreases　0.78　degrees　C　by　adding　benzenesulfonic　acid　sodium　salt　of　0.03%,　and　the　formation　rate　of　the　gas　hydrate　increases　0.2　g/s　by　adding　calcium　hypochlorite　of　0.08%.　In　the　cool　storage　system,　clathrate　hydrates　can　be　formed　effectively,　and　thermal　energy　can　be　stored　efficiently.　When　adding　benzenesulfonic　acid　sodium　salt　of　0.03%,　the　cold　energy　stored　is　4.74　MJ,　and　the　cool　storage　density　is　206.07　MJ/m(3).　The　performance　of　this　cool　storage　system　can　meet　the　needs　of　practical　air　conditioning　engineering.　(c)　2006　Elsevier　Ltd.　All　rights　reserved.