Frenger Systems have completed a number of high profile projects in Australia, including The Bond, Sydney, Australia's first building to achieve a 5-star energy usage rating. The benefit of Frenger's Carat radiant/convective passive cooling beams have been proven through project testing undertaken for all projects currently supplied.

See the 'Why Choose Carat' and 'Application & Design Data' documents to see how well suited Frenger's Carat chilled beam is for Australian projects.

Below are some of Frenger's recent Australian projects. Materials for the project "George Street, Sydney", "USYD Central" and "One Lend Lease, Melbourne" are currently under manufacture for delivery in the summer.

For more information about our Carat Product please click here

Frenger has now completed the design, manufacture and supply of approximately 3½ kilometers of Multiservice Chilled Beams for the prestigious Council Headquarters in Edinburgh.

The building has adopted many of the most current “Green building” initiatives including Frenger’s latest-generation Carat radiant/convective cooling technology.

The Multiservice beams are finished in silver and have been supplied in single lengths up to 6.1m (the extremely lightweight nature of Carat has made this possible) with integrated direct and indirect lighting modules.

Further images will follow on completion of the project.

Regula Secura provides optimised operation and security against condensation

A well-known disadvantage of waterborne systems is that the operating temperature of the water circuit should be above the dew point, considering the risk of condensation precipitation. The problem is well-known to Frenger and therefore we have now solved it once and for all. We've developed a condensation control for chilled beams. The condensation control is called Regula Secura.

In the event of condensation of the supply water pipe, the "on/off" control valve temporarily stops the water flow through the chilled beam. The protection provided by Regula Secura is individual for each chilled beam. This provides high security against water damage caused by condensation. The condensation control also ensures optimal performance from the chilled beam, even with water temperatures below the dew point. The cooling effect drops when the water temperature is below the dew point, since Regula Secura controls the beam with the on/off function.

Using Regula Secura on all chilled beams increases the protection against condensation. Only beams with moisture precipitation are shut down until the condensation has desiccated, leaving other beams functioning as normal. This is particularly beneficial in room environments with varying temperatures or where there is a risk of outside moisture entering the room through open windows for example.

Function of Regula Secura
Regula Secura controls the output signal to the actuator and only operates when there is a signal to the actuator to open the valve. Regula Secura is fitted with a sensor on supply water pipe of the chilled beam. When the sensor detects condensation on pipe, Regula Secura closes the valve until the condensation has desiccated. Regula Secura is compatible with electronic controls such as Regula Mono, Regula Duo or any other equipment using ON/OFF actuators, NC (normally closed) 24V AC. The function means that if there is no electricity the valves are closed.

Operation of Regula Secura
Frenger have conducted a series of representative tests to determine the effectiveness of the Regula Secura condensation control strategy. We have determined that the chilled beams can be supplied with cool water below the dew point and still maintain acceptable space conditions. Referring to Diagram 1:

b) The chilled beam is effectively "switched off" for approximately 15 minutes in every hour. The moisture on the supply water pipes evaporates due to the increased ability of the warmer air to contain moisture.

c) The supply water pipe is now free of moisture, the control valve opens and water flow commences. The beam very quickly reaches maximum capacity and the room temperature is brought down to the design condition within approximately 25 minutes of the beam "switching off". The beam operates for another 60-90 minutes before the cycle commences again.

It can be seen that during our tests the beam operates effectively up to 4K below dew point whilst maintaining the desired space condition within a tolerance of +1.6K. This feature can be used to increase the relative cooling capacity of the product or to provide a contingency against unexpected increases in RH levels.

Tests were carried out on our Professor active chilled beam and without our Drypac™ coil coating. More information is available in our booklet "Integrated Controls", which can be downloaded from our website.

Frenger have been awarded a million pound contract for the supply of multi Service chilled Beams (MSCB's) for the prestigious New Council Building in Edinburgh "CEC Edinburgh" project.

The client’s specification required a beam with excellent cooling properties that incorporated direct and indirect lighting with integrated PIR sensors to preserve energy, all enclosed within an aesthetically pleasing architectural casing.

Full scale climatic testing at Frenger’s Derby BSRIA calibrated test Laboratory is currently underway to test the air velocities directly below the 'Passive' MSCB fitted with a convective only cooling coil with a duty of 378 W/m.

Frenger are one of the very first radiant heating manufacturers to test products to EN14037. This is the new homogenised European standard for the capacity measurement of ceiling-mounted LTHW radiant heating panels.

Why do we need EN14037?
Before the introduction of EN14037 there was - believe it or not - no dedicated testing protocol for the testing of such products. In fact, in the UK we have adapted "radiator" test standards (BS3528 and BS EN 442) for the purpose of assessing radiant heating panel capacity.

For various reasons (not least the inconsistencies in heating data published in manufacturer's literature) the introduction of EN14037, if widely used will ensure comparable heating panel performance data between manufactures.

How does EN14037 determine heat capacity?
A testing takes place in a 4m x 4m x 3m chamber where all 6 internal surfaces are cooled down. A 3m x 0.6m test sample is suspended from the soffit at a height of 2.5m. The panel is supplied with hot water at 3 different temperatures. Radiant temperature measurements are taken with a Black Globe sensor at 0.75m above FFL. Air temperature measurements are taken within the occupied zone (at heights of 0.25m, 0.75m, and 2m). In this way the ability of the panel to heat the space is measured. (Note: the reference temperature is defined as the average of: