| 摘要 |
A low boiling refrigerant, which is vented from a heat exchange system, such as an air-conditioner, is transferred directly from the exhaust valve of the heat exchange system through a tube to a collecting cylinder or tank (15). The collecting tank (15) is submerged in a chemically activatable cold composition (41) positioned in a container (40) which is of a size sufficient to receive the cylinder or tank and hold the cold composition. The cold composition may, for example, contain therein a chemical blend of ammonium nitrate and urea. Upon dissolving the chemical blend in water, an endothermic reaction is initiated. As a result, the heat within the tank is absorbed therefrom by the chemically actived cold composition in the container causing the temperature and pressure inside of the tank to drop. This permits substantially all of the refrigerant in the heat exchange system to be transferred into the chilled tank (15). |
