www.heatingandventilating.net


From the editor Put


schools first


T


his month six trade unions urged the Government to invest in helping schools tackle the growing issue of indoor air quality in classrooms. The impact on schools throughout the pandemic is well-documented, with scores of teachers and pupils being forced to miss valuable face to face time as a result of contracting COVID-19 or having to isolate. And recently the use of CO2 monitors has raised further alarm with teachers reporting levels of up to 1,500ppm in classrooms. It’s right therefore that the trade unions


want the Government to act to make air quality in schools a matter of priority. But it has to be the right action, and


there are fears that the Government’s pledge to supply 7,000 air purifiers for schools is nothing more than a sticking plaster on this critical issue. (See pg 7) When you consider that National


Education Union puts the number of UK classrooms at over 300,000, those fears may be well founded. So much learning has already been missed, so isn’t it time to put schools first? IAQ in schools and other commercial settings is a major focus in this issue of HVR. We are also featuring district heating, ductwork and low carbon buildings.


Heathe Ramsden, Edito Magazine Team Editor


Advertising Manager Business Director Artwork Editor


Circulation Curwood CMS Ltd


Heather Ramsden Sharon Holloway Jacqui Henderson Nic Mandeville


datateam@c-cms.com


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Welcome


Cutting edge heat & vent


CLIMATE NEUTRAL HEATING WITH HYDROGEN-OPERATED TUBE HEATERS


F


or years, the manufacturers of infrared heaters have been advertising the modernity and future viability of their technology. Now it’s believed, a


ground-breaking milestone has been achieved with the development of a 100% hydrogen-compatible tube heating system.


The challenge of hydrogen is the hydrogen itself


The Schwank Group has developed what it describes as an unrestricted H2-compatible tube heater. For this purpose, the Cologne R&D team led by Prof Dr. Friedhelm Schlösser equipped a Schwank tube heater with a completely new burner technology. Beforehand, the ignition and combustion


behaviour of hydrogen in a closed, small- volume systems was simulated on the computer system using complex calculation models. “As soon as the theoretical approaches


were transferred to the practical environment of the laboratory, it quickly became clear what makes the use of 100% hydrogen so difficult. “It is the nearly unpredictable behaviour of the fuel itself. What was deemed functional on the computer was no good in practice. “So, with a lot of intensive work and


countless live test series, we have developed the first functioning tube heater virtually from scratch,” says Prof Schlösser.


H2 as a logical step in the energy transition


At the European Hydrogen Days 2021 in Brussels, Schwank chief executive and head of R&D Prof Schlösser highlighted the importance and necessity of hydrogen for the envisaged energy transition. Like Prof Schlösser, many experts share the opinion that hydrogen is important in mastering the ambitious environmental goals of the coming years.


Below: The 100% hydrogen-capable tube heater from the R&D lab of Schwank. Torsten Stohler and Thomas Renner, the hydrogen development team, perform a final analysis of the consumption and emission values of the new burner before patenting


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www.heatingandventilating.net


February 2022


5


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