Heat exchangers freon / gas to liquid - BA-68-F series

Plate Heat Exchanger Gas Liquid - Ba-68-F Nordic Tec

Plate Heat Exchangers - designed for use with gas-liquid media - also known as Freon heat exchangers.

Nordic Tec's Freon plate heat exchangers ( FPHE ) from the Ba-68-F series are based on a plate of 526x119mm. With these dimensions, every single plate of the device provides a heat exchange surface area of approximately 0.068m². These plates are typically corrugated to enhance heat transfer efficiency, traditionally - in this question the solution is similar to traditional BPHE.

The gas-liquid plate heat exchanger Ba-68-F is conventionally equipped with two flow channels for media. The first channel is designated for Freon, gas, refrigerant, etc. It is easily identifiable by its characteristic gas connections, designed for brazing, which are 7/8" tubes.

The second channel is intended for liquid media, typically water or a glycol-water solution, at least in heat pump solutions. It has a standard external thread in a 1" size.

The most significant structural feature of the Freon heat exchangers Ba-68-F, distinguishing them from traditional liquid-liquid plate heat exchangers, is their increased resistance and durability under high pressure. As we know, Freon and similar media tend to operate at much higher pressures than the typical 20-30 bar. The working pressure for gas-liquid models is specified at max. 45 bar, with each unit undergoing pressure tests at a level of 60 bar. Maximal allowable working pressure of 4.5 MPa is enough to service most of the heat pumps freon applications or similar ones.

Gas heat exchangers from this series can also be equipped with optional thermal insulation, available for purchase together with the heat exchanger.


The key design features of the Nordic Tec Ba-68-F refrigerant-water heat exchanger series

The most important design feature of the Ba-68-F refrigerant-water heat exchangers - distinguishing them from traditional liquid-liquid plate heat exchangers, is their increased resistance and durability to high pressure. As we may know, refrigerants and similar media tend to operate at much higher pressures than conventional 20-30 bars. The max. working pressure of gas-liquid heat exchanger is specified at 45 bars, with pressure testing of each unit at 60 bars and over 60 bar.

Heat exchangers for refrigerants used in heat pumps, air conditionners and similar units - from this series can also be equipped with thermal insulation, which can be optionally purchased together with the heat exchanger.

Examples of heat exchangers from this series include:

We invite you to explore our full range of products.

The Ba-68-F plate heat exchanger as a refrigerant condenser

A refrigerant condenser is a device - essentially a heat exchanger - but it can be a plate heat exchanger or a model of another type. The purpose of a refrigerant condenser is to condense - that is to liquefy gas. Specifically - this is used to condense gas/refrigerant, for example, in heat pumps - so that the refrigerant releases its heat and transfers it to the surroundings or another medium. If we use the Ba-68-F plate heat exchanger as a refrigerant condenser, we can transfer its heat to a liquid, which we will then use in the heating system of our home. This is how a heat pump works - and it can be said that in some situations, a heat exchanger and a refrigerant condenser can be synonymous (although not always).

How does a refrigerant condenser work? | How do plate heat exchangers for refrigerants work?

The transfer of heat in plate heat exchangers occurs through the cooling of the refrigerant of a heat pump as it undergoes condensation, which is the process of liquefaction. When the refrigerant is warm and in a gaseous state - upon contact with cold water from the 2nd channel of the plate heat exchanger, it begins to release heat and transition into a liquid state. The heat then transfers to the second medium of the plate heat exchanger, which is water or a water-glycol mixture.

In this way, the refrigerant condenser - sometimes also referred to as a condenser - is practically indispensable. Ba-68-F heat exchangers are designed as refrigerant condensers for heat pumps and can operate with various types of refrigerants, practically with any refrigerant used in air conditioning or heat pumps.

Plate heat exchangers Ba-68-F - what design features allow them to serve as heat pump or air conditioning condensers?

Not every plate heat exchanger is suitable for use as an air conditioning or heat pump condenser. Ba-68-F models undergo a longer and more robust vacuum brazing process, allowing them to be certified for higher pressures than traditional heat exchangers for liquid media.

Ba-68-F plate refrigerant condensers are approved for pressures up to 45 bar. Refrigerant (simply put - the coolant used in air conditioning or heat pumps) tends to undergo rapid pressure spikes (which are dangerous for traditional liquid media heat exchangers) - reaching very high pressures exceeding 35-40 bar when temperatures reach 40-50 degrees Celsius. For this reason regular heat exchangers can not be used as refrigerant condensers of heat pump - a specific model certified for gas media and high pressures is required.

Ba-68-F plate heat exchangers are precisely designed for this purpose - they are intended to serve as heat pump condensers (including DIY heat pumps from air conditioning units). They have a working pressure of up to 45 bar - while each unit of this condenser undergoes pressure tests exceeding 60 bar before being approved for use.


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