Several innovative technologies include: passive chilled sails; thermal storage using phase change material; a 100% outside air ventilation system with heat recovery of exhaust serving a raised floor ventilation
air distribution system; and heat recovery chillers tied to a high efficiency low temperature heating/high temperature cooling hydronic system.
Protection of occupants from exhaled infectious agents and floor material emissions in rooms with personalized and under floor ventilation
. HVAC&R Research 13(1):23-38.
The refurbishment consists of overhauling and repairing sash windows, sills and surrounds, under floor ventilation
to the west elevation of the building, re-rendering facades to the north and east elevations, modifications to the fire escape and work to cure dampness.
So maybe you can't afford the windmill, but you can afford to use bamboo flooring, you can afford to install a floor ventilation