Receivers

The receiver requires a minimum service charge which adds to the total tax and value, and also increases the complexity of the system. Therefore sinks to avoid many small systems. Typical receiver suitable for a large system is shown in Fig. 6.10 .

The receivers can also act as a pump-down reservoirs, and must be able to retain sufficient refrigerant to allow the evacuation of one vessel for maintenance, inspection or repair. They should never be more than 85%, with a swollen and security.

Sinks are usually made of steel, welded pipes, bottom, and are arranged horizontally. Small receivers can be vertical, for the convenience of the location. Drainage pipes from the condenser to the receiver should be of sufficient size and any horizontal tilt allows you to easily drainage. Shut-off valve in this line must not be in a horizontal from the condenser outlet, since the slight resistance of friction will cause the liquid back to the condenser. The pipe output of the receiver may be below or with the help of internal pipe can leave at the top. Valve invariably currently set.

Ammonia-receivers oil drum sweat, and the receiver will slope down and slightly to the side. Receivers pressure vessels covered by the provisions of EN378 and require appropriate safety pressure relief devices. In cases where there is no shut-off valve between the condenser and receiver, this protection can be installed on one or the other, ensuring the total volume is considered.

In practice, the receivers will work about one-sixth full during normal operation. Some funds are provided, as a rule, to denote the level of the liquid inside. For example:

1. External, vertical viewing glass, suitable template, self-closing stop-valves.
2. A number of sight glasses are organized at different altitudes in the shell.
3. Several viewing glasses, located on the same section and 45 upwards from the horizontal diameter. Light is shone through one and the observer, looking at the other.