Page 4 - Climalife_Contact_15_EN

4 | REPORT | February 2019 | Climalife contact #15
The floating HP module allows the high pressure setting to be adjusted according to the outside temperature, in order to alter the speed of the condenser fans. The objective is to reduce the energy consumption of an installation by 15-20%. This module is also eligible for CEE incentives (Energy Saving Certificates) in France.
What kind of improvements can we expect
in the near future?
M. L. : Since the acquisition by the Dehon Group, Matelex development has been driven by the desire to meet the growing needs of the market by leveraging the group's global presence. This fits with the Dehon Group’s commitment to developing solutions that help reduce the envi- ronmental impact of refrigeration installations. This commitment includes fluid substitution, leak detection and installation energy management.
Today we are continuing to develop the DNI and its modules and we also benefit from feedback from our customers. A major player in the supermarket sector of France, for example, has achieved a 70% reduction in leaks over the last 3 years by installing the DNI on all of its installations.
Beyond using leak detection to reduce refrig- erant usage for HFC installations, resulting in cost savings, we are moving towards a global solution for optimising installations with CO2. For example, although the cost of the fluid is lower, real-time monitoring and alerts make it possible to improve installation performance, avoid breakdowns and thus minimise the risk of operating losses, which can be very costly.
In a nutshell, what is the advantage of leak detection using an indirect method compared to a direct method?
F. W. : The indirect method makes it possible to meet regulatory obligations for installations containing quantities greater than or equal to 500 tCO2 eq. ("F-Gas" EU Regulation No. 517/2014). The method also makes it possible to halve the frequency of manual leak detection saving time and cost because the leak detection can be quite time consuming.
With direct detection, one leak can conceal another this may mean waiting for the next manual leak detection schedule or if bad enough may cause a
Exterior temperature Fluid subcooling
Fluid outlet temp.
HP pressure sensor
system failure due to refrigerant loss. With the DNI, a quick recalculation allows you to be notified of a second possible leak.
Devices such as the DNI that alert the operator in the event of a leak make it possible to react very quickly, with information on the leak rate and the potential loss to hand.
Several thousand DNIs have already been installed all over the world (including China, Spain, France, Italy, Hungary, Germany, Belgium, Tunisia, Morocco and Romania).
Strain gauge