IMI Hydronics brings intelligence to controlling systems

Published:  02 June, 2016

IMI Hydronics, PICV, Commissioning, balancing

IMI Hydronics has created a solution to the problems caused by inaccurate control technology in heating or cooling systems. TA-Modulator is a highly precise pressure-independent balancing and control valve. It is used with a range of digitally configurable actuators, TA-Slider, to deliver the exact amount of energy to ensure perfect comfort and reduced energy costs.

Among the problems prevented are uncomfortable temperature oscillations, noisy systems and expensive energy bills.

Temperature fluctuations and high energy consumption are often caused by oversized or undersized control valves, overflows or underflows, incorrectly set-up pumps and inadequate control valves that only deliver the necessary flow to reach the desired temperature and keep it stable.

Energy demand and flow rate do not have a linear relationship for cooling and heating coils. For an output of 50%, a flow rate of just 20% is required. Most air-conditioning systems are sized for a few peak days in a year, so a flow rate of 100% is rarely required. Indeed, HVAC coils can operate at 25% flow for most of the year.

The TA-Modulator has been designed using a valve with a uniquely shaped, patent-pending EQM characteristic. This enables it to accurately make the minimal corrections to the flow to keep the desired temperature stable. The valve has a 600% longer working stroke than linear valves at the same flow rate, so it can control flow down to almost zero.

TA-Modulator can measure both pressure and true flow through the valve, so it is easier to adjust pumps to minimise energy costs or locate and rectify any errors or malfunctions in the system.

Depending on the application, the valve can be controlled using the digital-actuator range TA-Slider or the thermal actuator range EMO. TA-Slider actuators are fully digitally configurable by smartphone or PC; they can be used in all systems, with or without bus communication.

For more information on this story, click here: June 2016, 104

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