Method for refrigerating

Claim 1

A REFRIGERATION METHOD FOR AN ENCLOSED SPACE COMPRISING: PROVIDING A POOL OF LIQUEFIED GAS CONTAINED IN AN INSULATED VESSEL LOCATED IN SAID ENCLOSED SPACE; CONTINUOUSLY DISCHARGING EVAPORATED GAS FROM THE POOL OF LIQUEFIED GAS CONTAINED IN SAID INSULATED VESSEL INTO THE ENCLOSED SPACE, LIMITING THE HEAT PASSING FROM THE ATMOSPHERE OF THE ENCLOSED SPACE THROUGH THE INSULATED CONTAINER INTO THE LIQUIEFIED GAS TO VALUE GENERALLY INSUFFICIENT TO PROVIDE THE NEEDED REFRIGERATION; PASSING SAID GAS INTO HEAT EXCHANGE RELATION WITH THE ATMOSPHERE IN SAID SPACE BEFORE DISCHARGING SAID GAS INTO SAID ATMOSPHERE; CONTINUOUSLY SENSING THE TEMPERATURE OF SAID ENCLOSED SPACE; SELECTIVELY DIRECTING AT LEAST A PORTION OF THE HEATED GAS THROUGH SAID VESSEL TO INDIRECTLY HEAT THE LIQUEFIED GAS POOL, IN RESPONSE TO SENSING A RISE IN TEMPERATURE IN THE SPACE ABOVE A SELECTED VALUE THEREBY ACCELERATING EVAPORATION OF THE LIQUEFIED GAS AND PROVIDING THE NEEDED REFRIGERATION TO LOWER THE TEMPERATURE OF THE SPACE OF THE SELECTED VALUE; AND AGAIN DISCHARGING SAID GAS DIRECTLY INTO THE SPACE WITHOUT RECIRCULATION OF ANY SIGNIFICANT PORTION THEREOF TO THE VESSEL, IN RESPONSE TO SENSING A TEMPERATURE OF SAID SPACE AT THE SELECTED VALUE.