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Just right for CO2: BITZER WGC gas coolers
The BITZER WGC is a new family of liquid-cooled heat exchangers with several sizes and lengths which can typically be used in commercial and light industrial refrigeration. This heat exchanger concept can be used as a gas cooler, a heat recovery exchanger or a condenser – all in transcritical CO2 applications. One WGC model can thus operate in different modes within the same system, depending on the working conditions of the moment.
Shells and tubes for good reason
WGC heat exchangers are based on the shell-and-tube design which is highly resistant to both mechanical and thermal fatigue. In comparison with other heat exchanger technologies, this design offers notable advantages for installations in water-cooled CO2 refrigeration systems – especially when the system has a medium or large capacity of more than 250 kW. One single WGC can replace up to three brazed plate heat exchangers, making the system less complex to install. Furthermore, they offer high thermal efficiency thanks to their counterflow design.
Customised to individual needs
Every BITZER WGC can be customised in terms of shell diameter, tube length (up to 5.5 metres), number of tubes and baffle arrangement. Customisation follows the respective project’s needs, selections, quotations and technical data. In all cases, CO2 flows on the pipe side, while the secondary liquid (water or brine) flows on the shell side.
As a gas cooler, the WGC has a capacity range of between 30 and 1,000 kW. The WGC models have received CE approval for pressure vessels, according to the EU Pressure Equipment Directive 2014/68/EU.
As an independent specialist for refrigeration and air conditioning technology, BITZER is present all over the world: with products and services for refrigeration, air conditioning and process cooling as well as transport, BITZER ensures optimum temperature conditions for trade in goods, industry processes and indoor climate control – always considering highest possible energy efficiency and quality. BITZER is represented all over the world with 72 sites in 37 countries, including its sales companies and production facilities. Trade and service partners included, the BITZER network of manufacturing, development and sales extends to almost all countries in the world. In 2019, 3,800 employees generated a turnover of €808 million; expenditure for research and development totalled €46 million.
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