Generic selectors
Exact matches only
Search in title
Search in content
Generic selectors
Exact matches only
Search in title
Search in content

Circulation dynamics

Thermal dynamics are not as scary as you might think, lets see how they work inside your machine
The heat exchanger inside your machine is designed to perform two simple task in ensuring the brewing water is of the correct temperature of around 85-95 degrees Celsius  for you chosen beans.

Its first task is to circulate water around the group head and maintain the correct brewing temperature, 
Secondly, it has to heat up any fresh water coming into the group head to the correct temperature.

Both these task are carried out by the machine manufacture designing the system with the correct size and gauge of materials used in the heat exchanger and also the flow restriction in the group head.
As the system works on the principle of heat transfer, you will understand that any build up of scale inside the system will effect the brewing temperature of the water coming out of the group head.

Regular checks on the brewing water temperature will give you an indication of any potential issues and show that the filtration system needs attention.

How it works

heat exchanger

The heat exchanger inside your machine is contained inside the main boiler and consist of a tube that runs through the boiler. As the water inside the boiler heats up to operating temperature, heat is then transferred through to the walls of the tube and into the water held inside the heat exchanger.

As the the water temperature inside the heat exchanger increases, it naturally rises towards the group head, in the same way hot air rises. The group head is quite a heavy lump of brass, which causes this water to cool down as it circulates inside the group head.

Once the water temperature in the group head starts to fall, this cooler water then drops back down the return pipe and is returned into the bottom of the heat exchanger, ready for the process to repeat.
Terms & Conditions
Copyright © 2020 - Design & Build by route56solutions

Web Site Disclaimer

Website Usage Disclaimer

By using the content you find on you agree that the information contained in this website is for your general information and guidance purposes only, faults and operation procedures are generic to all traditional espresso machines and as such can only offer general guidance only.

Espresso machines contain water, steam pressure and electrics, and any reliance you place on information gained is therefore strictly at your own risk. If in any doubt whatsoever you are advised to contact a qualified engineer.

In no event will we be liable for any loss or damage including without limitation, indirect or consequential loss or damage, or any loss or damage whatsoever arising from loss of data or profits arising out of, or in connection with, the use of this website.

Through this website you are able to link to other websites which are not under the control of this site. We have no control over the nature, content and availability of those sites. The inclusion of any links does not necessarily imply a recommendation or endorse the views expressed within them.

While we endeavour to keep the information up to date and correct, we make no representations or warranties of any kind, express or implied, about the completeness, accuracy, reliability, suitability or availability with respect to the website or the information, products, services, or related graphics contained on the website for any purpose.