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

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The water flow rate has been set by the chi llers, and the fans must be opera ti ng at fu 11 speed, if the temperature is fl oati ng above the set poi nt. The rating factor is, therefore: AREA Fr = gpm • The range has been set by the chillers (heat rejection / lbs water flow) and the wet-bulb temperature is known. The approach can be found from the performance charts, or by an equation fitted to the charts: The leaving water temperature is then TTOWR = TWb + Ap. 30 10 9 8 7 6 5 0.2 0.3 0.4 60° Wet Bulb Chart 0.6 0.8 LO 2.0 Rating Factor 3.0 4.0 5.0 6.0 7.08.0 10.0 Fig. V.II. Cooling Tower Performance Chart for TWb = 60"F. V.53
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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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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
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
Page 546 and 547: --- 0:: ...J ..E:...o:: J: PLR --0
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 560 and 561: The fuel consumption during the hou
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 592 and 593: Rating factor Fr - The curves used
Page 594: was developed. This can be rearrang
Page 599 and 600: There are several variables that ar
Page 602 and 603: Step 3. The range (temperature drop
Page 604 and 605: ARCELL * MAX-NUMBER-AVAIL RF = GPM
Page 606 and 607: 3. us ing the hot tank to store exc
Page 608 and 609: Keyword HEAT-SUPPLY RATE HTANK-EN
Page 610 and 611: simulates the supply and demand lin
Page 614 and 615: the EQDEM array is simply a record
Page 616 and 617: 2.2.5.1 Design Calculations (subrou
Page 618 and 619: algorithm, although they are discus
Page 620 and 621: HTGAVE19 corresponding to the stora
Page 622 and 623: The water flow rate through the spa
Page 624 and 625: FORTRAN Engineering Keywords Variab
Page 628 and 629: where EELEC is the electrical load
Page 630 and 631: FORTRAN Engineering Keyword Variabl
Page 632 and 633: Keyword FORTRAN Engineering Variabl
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3. There are both absorption and co
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where E1Rcomp is the electric input
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Step 3. Free Cooling. If the genera
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or where CCOMP * RELCOM * RHTGEN =
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CAPC2 is the design capacity of the
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Step 21. Recalculate the steam turb
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Step 4. If there are no gas turbine
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TABLE V.I EXAMPLE OF EQUIPMENT COMB
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Keywords LABOR MIN-MONTHL Y-CHG MIN
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Keywords PROJECT-LIFE BLOCK MIN-PEA
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and FAL FL * (1 e - FL ) = 1 FL (1
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Step 2 The number of cycles in the
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Step 2 is If a uniform cost appl ie
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Step 7 The yearly charges for each
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5. CHAPTER V INDEX (for non-solar e
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5. CHAPTER V INDEX (for non-solar e
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S. CHAPTER V INDEX (for non-solar e
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VI. ECONOMICS SIMULATOR TABLE OF CO
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These quantities are calculated by
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1.4.6 Major overhaul cost Major ove
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1.5.3 Total life-cycle cost savings
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I 2. CHAPTER VI REFERENCES 1. "Li f
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, DAYLIGHTING CALCULATION IN DOE-2
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(a) light from sky passes through w
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2.3 Daylight Factors The following
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Sun height' 60° Sun height' 80° F
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Table 3 Monthlx Average AtmosE:herl
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Table 4 Monthll Average AtmoBE:heri
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Table 6 Recommended Maximum Dayligh
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7. Calculate daylight factors. The
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( 3) Construct unit vector along ra
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i. End of Sun Azimuth LooE. j. End
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