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where PLRH - QHP + QD (assuming the defrost ErR and the space heat mode - QHPT are approximately equal) and PLRCFM = RATED-CFM The total electrical energy consumption for this zone is the sum of the electrical consumption calculated by LOADS plus the compressor energy (including defrost), the electric resistance heat, and the fan energy consumptions ZKW = + {[QHPT * ErR + (Q + QD)] * O.000293} + [FC * * LSR(2)]. IV.164 (IV.489)
3.2.4. Unit Heaters and Unit Ventilators (subroutines UNITH and UNITV) These subrouti nes s imul ate the operat ion of unitary heaters and unitary ventilators (SYSTEM-TYPE = UHT or UVT). These are individual units located within each zone. These units have fans and heating coils. The unit ventilator, in addition, has a moveable outside air damper that is opened in response to a space temperature above the heating set point. Calculation Outline For each zone attached to this system, simulate the unit. A. Calculate the maximum cooling and heating rates. B. Calculate the hourly room air temperature and the hourly heat extraction/ addition rate (subroutine TEMDEV). C. Calculate the load on the heating coil and save all quantities that would be needed for a solar system simulation. Calculation Algorithms A. Calculate the maximum cooling and heating rates. For the unit heater, this is simple. This unit has no outside air capability and the fan cycles with the heat source to meet the heating load. Thus, at the top of the heating throttling range the unit is off, resulting in zero heat addition, and at the bottom of the range, the unit heater experiences full air flow and maximum heat addition equal to the design unit capacity plus fan heat gain. For the unit ventilator, the simulation is slightly more complex = 0.0 (IV.490) = + [CONS(l) * * SUPPLY-DELTA-T], or 0.0 if the fan or heating is scheduled to be off. The unit ventilator has an outside air damper that opens in response to a room temperature above the heating set point. The damper returns to its minimum position when the unit is in the heating mode. Additionally, when, because of NIGHT-CYCLE-CTRL, the unit has cycled on to hold a night setback temperature, the outs i de air damper is assumed to stay closed. This unit runs the fans continuously (when scheduled to be on) except during this night heating cycle. The mixed air temperature needs to be calculated. To do this, it is necessary to know the minimum quantity of outside ventilation air. When in the cooling mode, the unit ventilator uses 100 per cent outside air. Thus, the minimum supply air temperature (TCMINZ) and the resultant heat extraction rate «ERMAX» can be calculated IV.165
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DOE-2:ENGINEERS MP.NUAL .( Versi on
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ABSTRACT •...... ACKNOWLEDGMENTS
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TABLE OF CONTENTS (Cont.) Page 2.3.
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TABLE OF CONTENTS (Cont.) III. LOAD
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TABLE OF CONTENTS (Cont). 2.2 Equip
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2.3 TABLE OF CONTENTS (Cont.) Page
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ABSTRACT ••....• ACKNOWLEDGME
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ACK NOWLE DGMENTS This Engineers Ma
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DOE-2 STAFF PERSONNEL Principal Inv
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STATUS - MAY 1981 This edition of t
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SERVICE BUREAU MISSOURI McDonnell-D
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1.4 Volume IV - Engineers Manual Th
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4. CHAPTER I REFERENCES 1. D. A. Yo
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2.4 TABLE OF CONTENTS (Cont.) 2.3.4
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3. CURVE FIT. 4. CHAPTER II REFEREN
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These are the fundamental equations
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1.2 Outline of Algorithm Step 1 Let
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1.3 Description of the Subroutines
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2. WEIGHTING FACTORS by J. F. Kerri
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can be selected for use in 00E-2. T
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t o 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8
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In terms of Laplace transfer functi
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This infin ite sequence can be ch a
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The total energy in the pulse is no
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the outside air temperature, and Kv
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calculated from the wall response f
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This is the basis of the air-temper
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TABLE 11.6 LIGHTING DATA FOR WEIGHT
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In the sketch, Rc is the convective
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R' ! Ts Os Circuit A ROO 1 Circuit
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I -'- I + DOE-2 Values -- This Corr
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2.4. Weighting-Factor Subroutines i
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18. Count number of delayed surface
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4. Increment surface counter and in
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emainder, 0.4, to the other walls a
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2.4.S Subroutine WFMATG 2.4.8.1 Sum
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The \/0 \/1 \/2 - d1 WJ. - d(jl2 =
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N WFDDT = L Xi Y i' i=1 where N is
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TABLE 11.10 (Cant. ) Section II.2.3
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Program Variable FLRFUR FLRWT FR FR
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Program Var iab 1e PFA QFLOOR QSi Q
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has been simplified to ZX, etc. The
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5. CHAPTER II INDEX (Cont.)* Duhame
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5. CHAPTER II INDEX (Cont.)* solar.
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III. LOADS SIMULATOR TABLE OF CONTE
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1.2 LOADS Relationship to the Rest
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Within the space loop, but outside
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2.2 Weather 2.2.1 Weather V ariab l
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1061 = the enthalpy of saturated wa
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2 • 3. So 1 ar Cal cu 1 at ion s
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The diffuse radiation for cloudy co
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Step 2 In Eq. (IIL8) the hour angle
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Step 6 10) , where Equation (IILI0)
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The clear sky value is then reduced
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1. A new coordinate system is defin
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then --> --> (V 3 - V 2 ) rV; -V; I
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Step 5. Transformation of the shadi
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2.5 Interior Loads 2.5.1 Interior H
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7. If the user has input a schedule
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PPN TZONER SV ISCHR The
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2.5.2 Calculation of Cooling Loads
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2.6. Heat Conduction Gain 2.6.1. He
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For a wall with no heat capacity, t
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Then, Q = QIN t * XSAREA = [XSQCMP
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and RA = C * UWI where UWI is the i
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where UW = l/(RO + RA + Rl), and th
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Steps 5 through 8 For < 8 and < 2
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2.7. Solar Incident On Surfaces Thi
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uilding, the amount of diffuse sola
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Program Variable SOLID DRGOLGE QDI
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Equation (111.37) is the same as Eq
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4. CHAPTER III INDEX (Cont.)* coord
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4. CHAPTER III INDEX (Cont.)* peopl
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4. CHAPTER III INDEX (Cont.)* so 1
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IV. SYSTEMS SIMULATOR TABLE OF CONT
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1. SYSTEMS OVERVIEW by James J. Hir
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1.3 Simulation of Heat and Moisture
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where Tsurf is the coil surface tem
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ErR PLR=lead 1.0 - - - - - - - - -
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In addition to the types of heating
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air will remain at the mlnlmUm unti
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load is calculated as discussed in
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B. Calculate the supply air and ret
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Otherwise, = the larger of (OA-CHA
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QHM1 = CVAL(HEAT-CAP-FT,DBT,TMZ). H
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= MAX-HEAT-RATE + (HEATING-CAPACITY
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If the user has specified COOLING-C
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(1) (2 ) where MAX-SUPPL Y-T = MIN-
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QHMI = CVAL{HEAT-CAP-FT,DBT,TMIN),
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it is possible to use TC and TMAX i
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3. SYSTEM SIMULATION ROUTINES 3.1 C
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This is the temperature that will b
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exhaust fan energy consumption, nzo
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nsystems CFMP = L ns=l TMP = CFM ,
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The mixed air controller set point
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COIL-BF-FCFM is a correction functi
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MIN-UNLOAD-RATIO is equal to 1. 0,
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ERMAXM = CONS(l) * CFMIN * «TNOW>
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D. Calculate the mixed air temperat
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WMM = [(1.0 + F) * WRMINJ - ow - (F
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If variable-air-volume control to t
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3.1.5 Ceiling Induction System (sub
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Because the baseboard heaters are a
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The specification of HEAT-SOURCE =
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1. The maximum supply air temperatu
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TH is less than the return air temp
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nsystems CFMP = L CFM ns ' and (IV.
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(1) MIN-SUPPLY-T and (2) TCMIN, as
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Page 402 and 403: The specification of HEAT-SOURCE =
Page 404 and 405: Calculation Algorithms I. Simulate
Page 406 and 407: THMAX = TM - CONS(l) * ' and (I V.
Page 408: If, additionally, it is assumed tha
Page 416 and 417: 6. Update the zone temperature and
Page 418: 1. The Cooling Mode If PLRC is not
Page 423 and 424: nsystems CFMP = CFM , and L: ns ns=
Page 425: OA-CHANGES * PO = the larger of 60
Page 428 and 429: total zone heating coil energy cons
Page 431: QCS = the smaller of {[ * CVAL(COOL
Page 438 and 439: II. Simu 1 ate the central fl u i d
Page 440 and 441: 3.2.3. Packaged Terminal Air-Condit
Page 443: where QHPT = * CVAL(HEAT-CAP-FT,DB
Page 446 and 447: lIW = CONS(Z) , the space latent e
Page 448: continuously. If no outside ventila
Page 455 and 456: nzones = L (ZKW nz + ZFANKW nz ) *
Page 457 and 458: nzones QH = L ZQHnz * MULTIPLIER nz
Page 459: where ZQH = , if < 0.0 -- if > 0.
Page 465 and 466: For SYSTEM-TYPEs that do not allow
Page 467 and 468: thermostat action. an analogous equ
Page 470 and 471: Step 6. Update the History of the Z
Page 472 and 473: 4.2. Furnace Simulation (subroutine
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Page 478: RETURN-DELTA-T = the temperature ga
Page 481: TRC is then added to the set point
Page 485 and 486: D. If COOL-CONTROL = RESET, TC is c
Page 487 and 488: where WSURF A - B - C = (1.0 - CBF)
Page 489 and 490: In this control simulation, the ent
Page 491: 4.4. Outside Air Control (subroutin
Page 494 and 495: 4.5 Calculation of Fan Energy Consu
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4.7 Calculation of Humidity Ratio (
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6. CHAPTER IV INDEX* air handler, c
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6. CHAPTER IV INDEX* (Cont.) coolin
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6. CHAPTER IV INDEX* (Cont.) econom
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6. CHAPTER IV INDEX* (Cont.) four p
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6. CHAPTER IV INOEX* (Cant.) multiz
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6. CHAPTER IV INDEX* (Cant.) packag
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6. CHAPTER IV INDEX* (Cont.) packag
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6. CHAPTER IV INDEX* (Cont.) packag
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6. CHAPTER IV INOEX* (Cont.) packag
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6. CHAPTER IV INDEX* (Cant.) supply
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6. CHAPTER IV INDEX* (Cont.) two-pi
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6. CHAPTER IV INDEX* (Cont.) unitar
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6. CHAPTER IV INDEX* (Cont.) variab
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2.2.3.5 2.2.3.6 TABLE OF CONTENTS (
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TABLE OF CONTENTS (Cont.) 3.2 Syste
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1.2 Communication with Other Progra
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1.3 Simulation Limitations 1. There
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2. ALGORITHM DESCRIPTIONS This sect
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--- 0:: ...J ..E:...o:: J: PLR --0
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2.1.4. Effect of Temperature on Ene
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Keywords FORTRAN Variables TOT CAP
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is used in many of the equipment ro
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Keywords STM-BOILER-HIR HW-BOILER-H
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2.2.2.1.1 Steam or Hot-Water Boiler
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This calculation assumes that the e
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The fuel consumption during the hou
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The skin losses from the boiler are
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Keyword ABSORS-HIR ABSOR1-HIR ABSOR
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2.2.3.2 Initial Calculations The ca
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where LOAD is the load on this type
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SIZE MAX-NUMBER-AVAIL Economi c Dat
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where AUXIKW is the additional elec
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RCAPi = f1 (CHWT,ECT = TTOWR). f1 i
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is The compressor load including an
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Keyword TWR-CELL MAX-GPM TWR-PUMP
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(b) If the desired water exit tempe
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The water flow rate has been set by
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It can be seen from Fig. V.12 that
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APP = TTOWR - TWBDES, where TWBDE5
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number of double bundle chillers +
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Step S. Determine the approach for
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The power is then equa 1 to the pow
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With the exception of heat recovery
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where TOTCAP19 is the heat storage
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TFREZH is the fluid freezing point
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500,000 MBtu of jacket heat will be
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a. If the tank has been defined in
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Equations (V.29) through (V.32) are
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The pumps are not explicitly define
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V ar i ab 1 eli s t: Keywords FORTR
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FORTRAN Engineering Keywords Variab
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The heat exchanger UA factor is ass
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Keyword FORTRAN Engineering Variabl
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FORTRAN Engineering Keyword Variabl
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The load that has just been allocat
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2. RElCOM = where HIRNOMi correspon
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or ECOOLT or CAPA, whichever is sma
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priority on the generator heat. The
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g. The coupled absorption chiller l
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Step 8. Step 9. Step 10. Step II. S
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Step 34. Recalculate the excess ste
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where KAVQi : KAVi + 1. KAVi in tur
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2.3 Economic Calculations Calculati
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Keywords UNIT INSTALLATION ESCALATI
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2.3.1 Equipment Costs (subroutines
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(V.llO) Cyclical Costs. The equipme
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Step 6 The cyclical cost coefficien
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Q * p-mo Qblock = M Fbill (U29) whe
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4. CHAPTER V REFERENCES 1. J. J. Al
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5. CHAPTER V INDEX (for non-solar e
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1. DESCRIPTION OF THE LIFE-CYCLE CO
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1.3 Cost Types In ooE-2, non-energy
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1.5 Calculation of Investment Stati
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1.6 Subroutine Deser iption RDESF R
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DAYLIGHTING CALCULATION IN DOE-2 Fr
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1. Introduction DAYLIGHTING CALCULA
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a b c Fig. 2. Window with diffusing
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Fig. 5. Sun height' 20° Sun height
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, ¢sun ¢sun,deg L z y altitude of
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New York Ci ty, NY .34 .33 .40 .54
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The background luminance, L b , is
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(1) One or more coordinates of the
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specified. ( 4) Print error message
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where GILSK and GILSU are the illum
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• 3. A shade is left open if the
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