6.  AN EXPLANATION OF HOW the McKee FLUIDIZED GLAZING & CLADDING  SYSTEM WORKS,

With reference to Figure 3  ; The basic Power / Energy flow diagram.
It should be noted that Figure 3  is not a fluid flow diagram, its purpose is to show the directional flow of power / energy amongst the various subsystems i.e. the facades and the ambient, the cool & warm energy stores, and the building interior, the room.
For the explanation it is assumed that the system has been and is in an ongoing working situation in June.

1  During the night the valve Vf has been switched to the cool store Msc and Va to A, the stores and the fluid distribution valves all to position B, all facades together and  to  the heat exchanger Hxfs.
Thus energy has been extracted from the cool store Msc resulting in its temperature falling to Tsc (min) normally to less than 12 C

2  If during the night the room temperature Tr required to be maintained at TR (21C) the valve Vr would have been set to B and energy from the Warm store Msw would be transferred via Vfr to the heat exchanger HXr in the room. Thus maintaining Tr and reducing the temperature, Tsw,  of Msw .

Or of course if Tr had been too high the valve Vr would be set to A and energy transferred from the room via HXr, Msc to the facades and ambient.

3  After sun rise and of course if conditions are appropriate i.e. increasing facade fluid temperature, the most suitable facades are switched to Hxfs  so that cooling of the cool store may continue .  The remaining facades switched to Hxfr and to transfer energy to the warm store Msw  and /or the room heat exchanger (if required).

Once the energy of the warm store has been replenished the FDV's are set to A (energy is not being transferred to Hxfs or Hxfr) thus mixing the fluids of the facades  DISSIPATE any further absorption of solar energy over the total facade area. (maximum facade fluid temperature in this mode will not be more than about 4 deg. C above ambient temperature ; normally well below human blood temperature)

4  By switching the valve Vr to the cool store Msc  and to the room heat exchanger Hxr any internal energy within the building i.e. solar gain plus energy from people & equipment may be transferred from the room via the heat exchanger HXr to the energy store Msc which is at a considerably lower temperature than Tr the room temperature. Thus during the day the temperature of the cool Store Msc will gradually rise, the rate of rise being determined by the heat capacity of Msc and the rate of energy input to it from the room.

Thus the temperature of the room may be kept very close to the desired temperature TR (21deg.C)

5  During the late afternoon the temperature Tsc of the cool store Msc will approach TR as the internal energy of the building is transferred to Msc. Whenever the appropriate conditions prevail the valve Vf maybe switched to B, Va to B and or some or all  FDV  to HXfs.

Of course, if required Vr may still be switched to A thus continuing to cool the room via HXr.

6  If the room temperature tends to fall then water flow to HXr may be stopped or Valve Vr may be switched to B to transfer energy from the warm store Msw to the room.

7  When the temperature  Tsc of the cool store Msc has reached its minimum allowed the flow Ffs and the solar fluid flow to the facades  may be stopped.

8  To cope with extreme conditions the heat pump HP may be used to actively cool the cool store Msc and to pump the heat into the warm store Msw or to the facades via appropriate heat exchangers,  such a heat pump would be working at a high coefficient of performance (CoP) and therefore the electrical input to it will be relatively small.