Controller Type 210 by International Energy Agency This is a very simple component that calculates the set point temperature for the boiler and the three-way valve and the mass flow rates of water. tset boiler = 66.81 - 1.368 * tout tset 3way valve = 61.81 - 1.368 * tout total mass flow rate = 613 * 14 / 3600 * Lamda column mass flow rate = 613 / 3600 * Lamda INPUTS : 1 Outside temperature 2 On/off switch (lamda) PARAMETERS : NONE OUTPUTS : 1 Boiler set point temperature 2 Three way valve set point temperature 3 On/off switch 4 Total mass flow rate 5 Mass flow rate in each column Ref: IEA ANNEX 17:BEMS Synthesis Report Univ. of Stuttgart June 27, 1991 AN17-910627-01