Key Features

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Ease of Operation

Where the economy and flexibility is the primary requirement, our units can be controlled by a single operator with simple manual operation. Operators are quick to draw a parallel with ammonia compressor systems, and adapt easily to absorption systems.

In larger plants, operation is automatic with three control loops.

	Evaporator feed control.
	Absorber level control.
	Steam regulation for capacity control

Flexible load / temperature operation

Like compressor units, Ammonia absorption units can be turned down on load for lower evaporator temperatures. But the comparison ends here.

Unlike compressors, AAR units can compensate for fluctuations in cooling water temperature and load fluctuations, simply by increasing the heat supplied. For example; take a unit designed for 20TR, -5^oC, 130^oC steam, 32^oC cooling water.

An load of 25TR will drop the temperature to about 0^oC, in both compressor and absorption units, other conditions being the same. But lifting the steam temperature to about 140^oC would restore -5^oC, at 25TR load. This flexibility is not available with compressors.

Characteristic features of Guha AAR Systems

	Simple gravity reflux feed without pure ammonia pump.
	Skid-mounted, pre-assembled installation cuts down erection and commissioning time to a matter of days.
	Our fool-proof rectifier design ensures low L/G ratio, allowing lower turn-down ratios and high operating efficiency. Other packed tower designs suffer from fouling, thermal cracking and channeling. That can be catastrophic, leading to water carry-over to evaporator, and plant shut-down.
	Low ammonia hold-up in our units ensures low hazard operation.
	Standard multi-stage boiler feed water pumps, with standby, ensure ease of maintenance and reliability.
	Implements latest GAX and solution cooled absorbers for maximum energy utilization.
	Cooling water is provided on the tube side for easy, mechanical cleaning.