WITT - commercial and industrial refrigeration equipment
Leading supplier of industrial refrigeration
WITT has a global reputation as a proven leading supplier with stocks of high-quality refrigerant pumps and highside float regulators. We also supply custom-fit separator solutions, including top-quality, compact pumping stations, evaporator units with plate-in-shell heat exchangers and CO2-cascades for refrigeration plant manufacturers.
Our product philosophy for separator stations has a clear customer focus: high efficiency through reduced assembly time and reduced on-site costs for refrigerant plant manufacturers.
Saving energy, protecting the environment
Our product development always prioritises energy efficiency and protecting the environment. That is why WITT favours natural refrigerants like ammonia (NH3) and carbon dioxide (CO2) since its inception. These refrigerants offer our customers ecological benefits and save them energy.
Using natural refrigerants to protect the environment and promoting sustainable management of refrigeration equipment are important priorities for us, which is why we are active members of the following organisations and initiatives
The majority of industrial refrigeration circuits today consist of pumped refrigeration systems with forced circulation. For this end-users and refrigeration contractors need refrigerant pumps that can meet high quality, safety and efficiency requirements.
WITT refrigerant pumps are specially designed, tested and produced for use in refrigeration plants. Their outstanding long life make them some of the most reliable refrigerant pumps on the market today. Unlike pumps for the chemical industry that are also used in the refrigeration industry, WITT refrigerant pumps are impressively easy to install, they do not have hidden extras needed, and they can be used over the full capacity range and across a broad range of operating temperatures.
In industrial refrigeration systems the refrigerant is expanded from the high-pressure side to the low-pressure side with expansion devices (expansion).
Refrigeration systems generally work with different pressure levels. To remove heat from the heated (evaporating) refrigerant and condense it, a compressor transports the refrigerant gas from the surge drum to a condenser by increasing the pressure. Upon heat exchange with the warmer ambient temperature, the refrigerant is condensed and reaches an expansion device.
Collecting refrigerant and efficient separation.
In a refrigeration system the refrigerant must be stored and its liquid and gas phases separated (separation). Pressure vessels with integrated separation equipment are used for this purpose. Receivers for refrigerant are also needed at locations of the refrigeration system.
Refrigerant storage, efficient separation, refrigerant pumping or heat exchange.
In a refrigeration system the refrigerant must be stored and its liquid and gas phases separated (separation). Pressure vessels with integrated separation equipment are used for this purpose. Receivers for refrigerant are also needed at locations of the refrigeration system.
Compressors in refrigeration systems need sufficient lubrication with appropriate refrigerant oil. Some oil is always carried over with the refrigerant into the refrigeration system - even the latest compressors cannot avoid this.
To prevent the oil is not causing capacity losses, i.e. blocking heat exchanger surfaces, it needs to be removed from the refrigeration cycle. By occupying the evaporator surfaces with refrigerant oil, the COP of the system drops by approx. 3% per Kelvin.
