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Denmark's largest hospital cuts ventilation costs
Denmark's largest heated hospital complex faces enormous energy challenges. The 280,000 m² facility spends over 100 million kroner per year on electricity, water, and heating. Ventilation represents the largest operational expense.
This comprehensive retrofit addressed critical infrastructure challenges through systematic fan replacement. Phase one replaced 35 fans while maintaining full integration with legacy ventilation systems from the 1950s and 1960s. Results delivered immediate operational improvements.
Analysis confirms return on investment periods decrease proportionally with fan capacity. ZerAx® installations achieve ROI periods of less than twelve months.
Technical solutions
Legacy systems operated at 40% efficiency. The replacement systems deliver 90% efficiency ratings. Advanced engineering eliminates operational noise, permitting removal of acoustic dampening systems and reducing overall resistance.
The lifecycle cost analysis demonstrates that whilst initial investment costs remain higher than competing products, operational savings offset this premium rapidly. Integration capacity proved critical because the systems needed seamless compatibility with existing infrastructure. Service guarantees provided comprehensive support throughout the system lifetime, adding further value beyond the immediate efficiency gains.
Hospital infrastructure operates under complex variable demand protocols that challenge conventional ventilation systems. Surgical departments require significantly higher ventilation capacity than administrative areas, creating uneven load distribution. Seasonal variations add further complexity to system management requirements. The capacity expansion over multiple decades stressed the 60-year-old infrastructure beyond original design specifications, so breakdown risk increased with aging equipment requiring constant maintenance interventions.
Our-efficiency systems reduced operational pressure while maintaining full capacity requirements across all zones.
The hospital monetises CO2 reduction credits through energy partnerships. Management invested proceeds in specialised consulting services to identify additional optimisation opportunities. Results support programme expansion across remaining facilities.
Given the planned relocation to new facilities in 2018, investment decisions focused on rapid ROI projects. The short payback period made the ventilation retrofit financially viable despite the impending facility transition.
34 %
energy reduction402 tonnes
CO2 saved per year<1 year
return on investment34% energy reduction, 402 tonnes CO2 saved
The comprehensive retrofit delivered measurable environmental and financial results across the hospital's ventilation infrastructure.
34% energy reduction, 402 tonnes CO2 saved
The comprehensive retrofit delivered measurable environmental and financial results across the hospital's ventilation infrastructure.
