DOE-2 Engineers Manual Version 2.1A - DOE-2.com

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The fuel consumption during the hours the furnace is operating is the same as for the fossil fuel boilers FUEL = CAPOP * HIRF * HIRCOR, where HIRF is the fuel input ratio at design (rated) load (input through keyword (FURNACE-HIR). HIRCOR is calculated from the part load ratio curve input by keyword FURNACE-HIR-FPLR. During the hours the furnace does not operate at all, the fuel consumption is simply FUEL = PILOT, where PILOT is the fuel consumption of the furnace pilot light and corresponds to the keyword FURNACE-AUX. This is to take into account any fuel consumption from a pilot light. If an electronic ignition device is used in place of a pilot, keyword FURNACE-AUX should be set to O. The electricity consumed is ELEC = CAPOP * EIR * PLR. Here the part load ratio, PLR, is used because it is assumed that furnace does not have any means of capacity reduction other than cycling on and off. In this case, PLR is equal to the fraction of the hour the furnace is operating. 2.2.2.1.3 Gas Domestic Hot-Water Heater (subroutine GASDHW) The simulation input/output can be illustrated as in Fig. V.6. The fuel consumption is calculated the same as for the fossil boilers FUEL = CAPOP * HIRDHW * HIRCOR, where HIRDHW is the fuel input ratio at design (rated) capacity (input through keyword DHW-HIR). HIRCDR is a function of the part load ratio and is calculated from the curve input by keyword DHW-HIR-FPLR. HIRCOR is valid for all part load ratios where 0 < PLR < MAX-RATIO. The electricity consumption is ELEC = CAPOP * EIR. V.23
Input Hot Water Heating Required SIZE MAX-NUMBER-AVAIL Economi c Data PLANT-PARAMETERS DHW-HIR Design Parameters Fossil Domestic or Process Hot Water Heater DHW-HEATER DHW-HEATER-FUEL Performance Parameters PART -LOAD-RATIO ELEC-INPUT-RATIO Output Fuel Consumed Electrical Power Consumed EQUIPMENT-QUAD DHW-HIR-FPLR Fig. V.5. Hot water heater simulation. In this algorithm, the electrical consumption is constant regardless of the load. The assumption is that the electricity is used by a water circulation pump that runs constantly. Note that the default for keyword ELEC-INPUT-RATIO is 0 for the DHW-HEATER. V.24
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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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Q = - [CFMZ * (TAVE - TC]) (I V. 3
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The specification of HEAT-SOURCE =
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Calculation Algorithms I. Simulate
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THMAX = TM - CONS(l) * ' and (I V.
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If, additionally, it is assumed tha
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6. Update the zone temperature and
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1. The Cooling Mode If PLRC is not
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nsystems CFMP = CFM , and L: ns ns=
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OA-CHANGES * PO = the larger of 60
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total zone heating coil energy cons
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QCS = the smaller of {[ * CVAL(COOL
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II. Simu 1 ate the central fl u i d
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3.2.3. Packaged Terminal Air-Condit
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where QHPT = * CVAL(HEAT-CAP-FT,DB
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lIW = CONS(Z) , the space latent e
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continuously. If no outside ventila
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3.2.4. Unit Heaters and Unit Ventil
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nzones = L (ZKW nz + ZFANKW nz ) *
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nzones QH = L ZQHnz * MULTIPLIER nz
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where ZQH = , if < 0.0 -- if > 0.
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For SYSTEM-TYPEs that do not allow
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thermostat action. an analogous equ
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Step 6. Update the History of the Z
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4.2. Furnace Simulation (subroutine
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would require solving all zone and
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RETURN-DELTA-T = the temperature ga
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TRC is then added to the set point
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D. If COOL-CONTROL = RESET, TC is c
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where WSURF A - B - C = (1.0 - CBF)
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In this control simulation, the ent
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4.4. Outside Air Control (subroutin
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4.5 Calculation of Fan Energy Consu
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and PLS PLR PWR S - no--=-- , for s
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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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Page 535 and 536: 2.2.3.5 2.2.3.6 TABLE OF CONTENTS (
Page 537 and 538: TABLE OF CONTENTS (Cont.) 3.2 Syste
Page 539 and 540: 1.2 Communication with Other Progra
Page 541 and 542: 1.3 Simulation Limitations 1. There
Page 543 and 544: 2. ALGORITHM DESCRIPTIONS This sect
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Page 548 and 549: 2.1.4. Effect of Temperature on Ene
Page 550 and 551: Keywords FORTRAN Variables TOT CAP
Page 552 and 553: is used in many of the equipment ro
Page 554 and 555: Keywords STM-BOILER-HIR HW-BOILER-H
Page 556 and 557: 2.2.2.1.1 Steam or Hot-Water Boiler
Page 558 and 559: This calculation assumes that the e
Page 563 and 564: The skin losses from the boiler are
Page 566 and 567: Keyword ABSORS-HIR ABSOR1-HIR ABSOR
Page 568: 2.2.3.2 Initial Calculations The ca
Page 571 and 572: where LOAD is the load on this type
Page 573 and 574: SIZE MAX-NUMBER-AVAIL Economi c Dat
Page 576 and 577: where AUXIKW is the additional elec
Page 578 and 579: RCAPi = f1 (CHWT,ECT = TTOWR). f1 i
Page 580 and 581: is The compressor load including an
Page 584: Keyword TWR-CELL MAX-GPM TWR-PUMP
Page 588 and 589: (b) If the desired water exit tempe
Page 590: The water flow rate has been set by
Page 593 and 594: It can be seen from Fig. V.12 that
Page 597: APP = TTOWR - TWBDES, where TWBDE5
Page 600: number of double bundle chillers +
Page 603 and 604: Step S. Determine the approach for
Page 605 and 606: The power is then equa 1 to the pow
Page 607 and 608: With the exception of heat recovery
Page 609 and 610: 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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