INTRODUCTION

TECHNICAL DETAILS

SPECIFICATIONS

Reduction of filling capacity:

With the WITT HR & HS condensate is continuously expanded to the low pressure side. That means during normal operation nearly the entire refrigerant charge is stored on the low pressure side, whereby a high pressure receiver is unnecessary.

Safety:

Due to the mechanical design no wiring or additional controls are required. In the event of a power failure condensate is drained safely to the low pressure side, ensuring highest operational safety.

Energy-efficient:

Since refrigerant is always drained by the float whenever condensate accumulates, lower condensing temperatures can be utilized without a need to consider other control criteria. Compared to a system operating with traditional expansion valves there is neither a need for sub-cooling liquid nor superheating the suction gas. (Remark: energy savings of up to 13% are quite possible, i.e. with 5 K lower condensation temperature).

Stable plant operation:

Pressure fluctuations are avoided by continuous condensate drainage, guaranteeing stable operation of the whole system.

Reduction in maintenance cost:

During downtimes of the refrigeration system there will be slow pressure equalization when using float regulators with low pressure nozzles. Systems with only one compressor can be started from an unloaded condition without need for additional controls

CAPACITY CHART

* Refrigerant: NH3, T0 = -10 ° C, TC = + 35 ° C | ** Refrigerant: NH3, T0 = + 35 ° C, TC = + 75 °