{"id":8099,"date":"2021-04-30T13:05:19","date_gmt":"2021-04-30T11:05:19","guid":{"rendered":"https:\/\/www.tempco.it\/blog\/?p=8099"},"modified":"2021-04-30T13:05:19","modified_gmt":"2021-04-30T11:05:19","slug":"chocolate-pattern-on-plates-of-heat-exchangers","status":"publish","type":"post","link":"https:\/\/www.tempco.it\/blog\/en\/8099\/chocolate-pattern-on-plates-of-heat-exchangers\/","title":{"rendered":"Chocolate pattern on plates of heat exchangers"},"content":{"rendered":"

Let\u2019s talk about Chocolate pattern<\/strong>, which in our sector means talking about plate heat exchangers<\/strong><\/a>. One of the mostly asked questions we receive is what is the best configuration of the connections<\/strong> distribution on plate heat exchangers.<\/p>\n

Plate heat exchangers of latest generation have for the majority parallel connections<\/strong>, which means primary fluid on the right and secondary fluid on the left, or viceversa. Since a few years ago there were also exchangers with crossed connections<\/strong>. We are then very often asked if crossed connections, on the perspective of the distribution of the fluid within the plate<\/strong>, is not better than parallel ones.<\/p>\n

In fact it can be natural to think crossed connections are better than parallel ones, when looking at the design of a plate and at how plate heat exchangers do work<\/a>. Just because, especially with large sized plates and maybe with lower flow rates of the fluids, the distribution doesn\u2019t happen on the overall thermal transfer surface of the plate<\/strong> but only on the side where connections are.<\/p>\n

Clearly, having crossed connections it doesn\u2019t happen, because the fluid gets automatically distributed upon the whole surface of the plate.<\/p>\n