Sustainable buildings: passivhaus, low carbon design and NABERS | Pablo Gugel, Director of Sustainability

Now, having grown in size, they occupy two adjoining studios.

Longer office hours – in order to enable social distancing – will mean windows are typically open in the early morning.Heating systems will battle to heat buildings in the cool mornings, as the heat escapes out of open windows..

Sustainable buildings: passivhaus, low carbon design and NABERS | Pablo Gugel, Director of Sustainability

Unless we think carefully about our heating controls, heating bills could well go through the roof..But building occupiers will also need to balance the need to open the windows with safety security concerns, especially when there are periods of low or no occupancy.People on ground floors in largely empty offices may feel particularly vulnerable to intruders, for example.

Sustainable buildings: passivhaus, low carbon design and NABERS | Pablo Gugel, Director of Sustainability

And open windows or doors may pose a health and safety risk if there’s a chance people will walk into them.. There’s an equally complicated scenario for mechanically ventilated buildings.With heat recovery devices switched off and air flows turned up to the maximum, buildings will struggle to warm up in the early morning.

Sustainable buildings: passivhaus, low carbon design and NABERS | Pablo Gugel, Director of Sustainability

Once a building is up to temperature it may well overheat as the ‘coolth’ normally recovered from an office is being thrown away.

In summer, this means chillers will be operating at maximum capacity (often less efficient), and they may not be able to deliver the total cooling required.. To make the problem worse still, it’s recommended that recirculating cooling systems (fan coil units or passive chilled beams) are switched off in rooms that have limited fresh air, to limit the movement of airborne particles.I can make choices about what I do and buy and communicate those choices.

These actions get us to the 100s may be the 1,000s.To get further though I need to be involved in the leadership of change.

By leadership, I do not mean getting others to do things..I am talking about developing new, fresh leading ideas and using know-how, skill and energy to make things happen.