The Principle Of Short-Term Absorption System

On Fig. 17-3, ammonia mixed with water in a closed container or a generator. At the bottom, kerosene burner heats it. Heat from the burner drives ammonia, in the form of steam, from the mixture. This couple is forced to raise the pipe and through the condenser. This is immersed in water from a tank on top of the refrigerator.

Water has a cooling effect. This leads of ammonia vapours to return to liquid (condensate) at the generation of high pressure. This drops of liquid ammonia through a pipe into the receiver. From there he enters the evaporator. The evaporator is surrounded by a brine. Liquid receiver isolated to prevent the container from cold tire supply section, acting as the evaporator.

The process continues for a short time, while kerosene is used and the burner goes out. The absorber is cooled to room temperature. Meanwhile, ammonia evaporates at low temperature in the evaporator. This is because, as a generator is cooled, it tends to absorb ammonia vapors. In turn, this reduces the pressure and allows the liquid ammonia in the evaporator at a low temperature of boiling. This evaporation causes cooling effect or refrigeration equipment, necessary for the preservation of food compartment contents.

In other words: Heat from the burner drives the ammonia from the generator to the evaporator. This requires only a short time. Ammonia in the evaporator evaporates and goes back to the generator slowly over a period of 24 to 36 hours. Evaporation of ammonia in the evaporator produces a cooling effect.

The deepening in the upper part of the capacitor tank can be filled with water. This is done for efficiency, in a hot climate, or for processing additional large loads. The water will evaporate quickly and assistance cooling of the condenser.

The mechanisms of absorption are equipped with fuse plug. Fuse plug-releases charge of the mechanism, if the unit temperature becomes excessive. High temperatures will 175F 200F [79C to 93CI, as would be encountered in a fire.) This will prevent the mechanism from the explosion.