Design strategy for low energy ventilation and cooling of health buildings, -
Stringent new NHS targets for new-build acute hospital energy consumption range between the 'best' minimum of 35 to 55 Gj/100m3 pa. Current performances ranges between 60-100 Gj/100m3 pa with very few notable exemptions, presenting a huge challenge.
This theoretical and abstracted diagram for a new 200 bed acute hospital achieves 38 Gj/100m3 pa on current climate data.
The design is resilient to warming summers until 2050. Conventional hospitals will require mechanical cooling after 2020/25 to deliver to current overheating criteria.
The simulations assume no change in medical equipment heat outputs, but this is clearly urgently required.