?? direct.dat
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1FAN OR PUMP
5 0 3 2 14
2W: mass flow rate of fluid
5N: fan or pump rotational speed
3Ti: inlet fluid temperature
3To: outlet fluid temperature
7E: power consumption
#
1a1: 1st pressure coefficient
2a2: 2nd pressure coefficient
3a3: 3rd pressure coefficient
4a4: 4th pressure coefficient
5a5: 5th pressure coefficient
6e1: 1st efficiency coefficient
7e2: 2nd efficiency coefficient
8e3: 3rd efficiency coefficient
9e4: 4th efficiency coefficient
10e5: 5th efficiency coefficient
11D: diameter (m)
12Mode: air=1, water=2
13flow network index which flow branch belongs to
14order index of flow branch in the network
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2CONDUIT 1(DUCT OR PIPE)
11 1 4 1 5
2W: fluid mass flow rate
3Ti: fluid inlet temperature
3Ta: ambient temperature
3To: outlet fluid temp (same as 1st output)
3To: outlet fluid temp (same as 4th input)
#
1hi*A: inside heat transfer coeff * area (kW/C)
2ho*A: outside heat transfer coeff * area (kW/C)
3Cm: thermal capacitance of conduit material (kJ/C)
4V: volume (m3)
5Mode: 1=air, 2=water, neg=detailed, pos=simple dynamics
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3CONTROL SIGNAL INVERTER (1)
0 0 1 1 2
4C1: input control signal
4Co: output control signal
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1multiplier (-)
2offset (-)
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4FLOW MERGE (FOR WATER/DRY AIR)
0 0 4 1 0
2W1: inlet mass flow rate 1
2W2: inlet mass flow rate 2
3T1: inlet temperature 1
3T2: inlet temperature 2
3T3: outlet temperature
#
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5DAMPER OR VALVE
1 0 1 0 6
4C: relative position of damper or valve
#
1Ko: flow resistance, damper/valve open [1000/(kg m)]
2Rammda: leakage parameter (-)
3Wf: weighting factor: 0=exp., 1=lin., or 0 < Wf < 1
4Mode: 0=closed if C=0; 1=closed if C=1
5flow network index which flow branch belongs to
6order index of flow branch in the network
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6FLOW SPLIT
1 0 0 0 5
#
1K: flow resistance of branch 1 [1000/(kg m)]
2K: flow resistance of branch 2 [1000/(kg m)]
3flow network index which this unit belongs to
4order index of flow branch 1 in the network
5order index of flow branch 2 in the network
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7TEMPERATURE SENSOR
3 1 2 1 3
3Ti: input temperature
4Co: sensor output (modified by gain and offset)
4Co: sensor output (modified by gain and offset)
#
1Tau: sensor time constant (sec)
2To: temperature offset (c)
3Tg: temperature gain (c)
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8PROPORTIONAL-INTEGRAL (PI) CONTROLLER
3 2 4 2 4
4Cf: controlled variable
4Cs: set point for controlled variable
4I: integral part of ctrl signal (same as OUT(1))
4C: output control signal (same as OUT(2))
4I: integral portion of control signal
4C: output control signal
#
1Kp: proportional gain (-)
2Ki: integral gain (-)
3Tau: controller time constant (sec)
4mode : +1 = error=(meas-set) ; -1 = error=(set-meas)
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9LINEAR VALVE WITH PNEUMATIC ACTUATOR
6 1 2 2 6
4C: control variable from controller
4Ca: actuator relative position (same as OUT(1))
4Ca: actuator relative position
4Cs: valve stem relative position
#
1K: flow resistance [1000/(kg m)]
2Tau: actuator time constant (sec)
3Rammda: leakage parameter (-)
4hys: hysteresis parameter (-)
5flow network index which flow branch belongs to
6order index of flow branch in the network
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10HOT WATER COIL MODEL
0 2 6 2 3
2Wa: air mass flow rate
3Tai: inlet air temperature
3Tao: outlet air temperature (same as OUT(1))
2Ww: water mass flow rate
3Twi: inlet water temperature
3Two: outlet water temperature (same as OUT(2))
3Tao: outlet air temperature
3Two: outlet water temperature
#
1UA: overall heat transfer coeff * area (kW/C)
2Vol: water side volume of coil (m3)
3Tauc: capacitive term of coil time constant (sec)
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11HOT WATER TO AIR HEATING COIL
11 3 7 3 6
2Wa: air mass flow rate
3Tai: inlet air temperature
3Tao: outlet air temperature (same as OUT(1))
2Ww: water mass flow rate
3Twi: inlet water temperature
3Two: outlet water temperature (same as OUT(2))
3Td: dummy temperature (same as OUT(3))
3Tao: outlet air temperature
3Two: outlet water temperature
3Td: dummy temp (used internally for air temp.)
#
1a: coeff for air side heat transfer correlation (-)
2b: exponent for air side heat transfer correlation (-)
3c: coeff for water side heat transfer correlation (-)
4d: exponent for water side heat transfer correlation (-)
5Vol: water side volume of coil (m3)
6Cm: capacitance (mass * sp. heat) of coil material (kJ/C)
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12COOLING OR DEHUMIDIFYING COIL
12 3 8 6 19
2Ww: water mass flow rate
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