Electronic Expansion Valves and Drivers

By Anonymous -
Technology
The ExV family valves manage refrigerant expansion through a variable valve port, created by a fixed calibrated opening and a canonical movable element.
The linear movement of the closing element is achieved trough the combined action of a stepper motor and a worm screw transmission, which produces precise and regular movement by minimising friction.
Control precision and stability are ensured by rotating elements supported by stainless steel ball bearings. The entire mechanism is very robust, thanks to the motor block suspended on harmonic steel springs, and a technopolymer chassis that guarantees high mechanical performance and light weight.
All this is made possible my careful construction, the use of quality materials, and a production process with final testing on each and every product, in accordance with the highest quality standards.

Performance
The care paid to the design and  production of our valves ensure market-leading performance:
  • high maximum operating pressure (Ps)
  • extended operating temperature range
  • operation guaranteed in both directions so as to simplify refrigerant circuit layout non reverse-cycle heat pumps and reduce installation costs: just the one valve is required, without needing to install non-return valves.
In addition, thanks to the effect combined of:
  • Teflon gasket for perfect tightness;
  • calibrated spring and extra closing steps to ensure tightness seal even with high pressure differentials;
  • ultracap to guarantee closing even in the event of blackouts.
ExV sistema is the only solution available on the market that can fully carry out the function of solenoid valve.

Energy saving and precision
The extended range of operation and precision in terms of control (from 10 to 100% of rated capacity) allows significant energy savings.

The extended control range of the ExV allows refrigeration unit operation with floating condensing pressure, significantly increasing compressor COP at medium and low room temperatures. This special function- only available with electronic expansion valves- brings considerable energy savings in all refrigeration applications.
ExV sistema provides excellent control performance, with a typical control curve that ensures, high control precision in all applications, even at low flow-rates. This feature is very useful in circuits featuring compressors managed by inverters, and in general on circuits with variable flow-rates.

Comments

Post a Comment

Popular posts from this blog

CAREL and the dreaded 'NO LINK' Screen!

By -
Image
CAREL and the dreaded 'NO LINK' Screen! Picture the scene, you've just downloaded a fresh new piece of software onto a controller but rather than the a new interface, you're met with a big fat 'NO LINK' message on the display. Or maybe you've just ran a factory reset to default settings and have come up against the same issue?  These are all possible causes for the common problem encountered by many of our customers, deemed the 'NO LINK' screen! (capitals for emphasis) As well as the two already mentioned, other common causes of the issue are a result of: A faulty connection between the Controller and the Display A faulty Controller  In any case, this issue is relatively simple to fix and our Managing Director, Stefano - having been in the Industry for 15+ years - has put together a video guide on how to do so. Watch the video below to see how to overcome the dreaded 'NO LINK' Screen!   www.i-acs.co.uk
Read more

The Future of HVAC Controls

By -
Image
For those who think that the new generation of innovative, automated HVAC control systems are a far-off thought, think again!  The new c.pCO Range by CAREL marks the arrival of their most intelligent range of controllers yet. Despite their compact design, the c.pCO Controllers are packed with new and exciting technologies offering a highly integrated solution to any kind of BMS System.  The versatile nature of the new standard controller (2 Ethernet, USB & RS485 Inputs Built In) opens doors to a wide range of communication protocols such as Modbus, BACNet,  HTTP, FTP  and loads more. The video below offers a detailed look into the new features and benefits of the c.pCO range. Worried about having to do a lot of work to replace older controllers? As if this wasn't enough, all c.pCO Controllers offer pin-to-pin compatibility with pCO5+, pCO5 and pCO3 controllers.  Get in touch now for more information! Peter Campbell Marketing
Read more

Remote management and communication solutions

By Anonymous -
Image
Systems of monitoring and supervision carry out a role key in the management incorporated of the systems HVAC/R. These are essential instruments for continuously and effectively controlling the status of field devices and recording temperature and events in compliance with HACCP regulations. They can perform scheduled actions (e.g. lights on/off, etc.) and optimise the organisation of maintenance operations through effective alarm management. The immediate signalling of alarms by SMS, e-mail and/or fax means the installation is always under control, while the remote system can be used to resolve several problems quickly, without need to go on-site, ensuring economic savings and faster response times. The system offers various reporting options, including standards-compliant print-outs at programmable times. In addition, critical situations can be highlighted relating to the trend in values such as temperature, pressure and power consumption, comparing values
Read more