flow into tubing 21 pass through the cooling coil 22 and exit through tubing 25 through the thermodynamic process known as forced convection the warm air is cooled by heat transfer through the cooling coil 22 and the heat is carried away by the cold water supply the cold water then returns to cold water riser 15 the second story of the building demonstrates two alternative heat extraction devices number 27 is a connective cooling coil and numbers 28 are two radiant cooling panels the cold water enters the convective cooling coil through tube 26 and cools the thin material of the convector this cool material cools the surrounding air of the coil which grows heavier and drops from the coil this draws warmer air in to the top of the convective cooler as the process continues warmer water leaves through tubing 30 this process continues as long as control valve 29 is in the open condition when sufficient cooling has been achieved control valve 29 will then close a similar process is shown on the other side of the second story of the building shown in fig1 the second story is 42 of the building 40 shown in fig1 the heat extraction device shown here are radiant panels which absorb radiant energy from surrounding space again these panels become operational when cold water flows through tube 26 into the radiant panels cooling them below the temperature of the surrounding space warmth radiates in from surrounding objects heating the cold water as it passes through the panel the water then leaves through conduit 30 whenever control valve 29 is in the open position several unique piping features are also illustrated in fig1 first is the flow metering automatic shut off valve.