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The scheme of new design.

A conventional HVAC-system combined with cooled ceiling (8)
and optional solar heat absorber (11).

Legend see below.

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© by IBS, Ingenieurbuero Schleifenbaum

Legend
  1 - cooling coil
   8 - cooled ceiling
     (surface temp. = 60-62 °F)		 15 - WC / restroom or general
       separate exhaust air
  2 - heating coil
  		  9 - boiler
  		16 - air plant
  3 - energy recovery
 10 - potable water storage
      (approx. 150 °F)		 17 - local heating or cooling coil
  4 - fans
 11 - solar heat absorber
       (optional)		 18 - local fan
  5 - chiller
 12 - low impulse displacement diffusers
       v_air max. = 40-75 ft/min (0,2-0,4 m/s)		 19 - bypass air - room to room
  6 - cold water storage
 13 - two - point regulation valve
  		20 - bypass air - inside air plant
  7 - heat exchanger
 14 - circulation pump