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

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Keywords PROJECT-LIFE BLOCK MIN-PEAK-LOAD FORTRAN Var i ab 1 es E,CN Y1 Engineering Variables Tproject Tleft BLOK and/or Qblock UBLK(1, I, J) if BLOCK, COST method is used EMON ENPEAK UDATA(5,J) ENUSE XlI) X(2) YEAR PERIOD SHIFT Qmon Qp-mo Qpeak Qpeak-min Qused YR V.125 Description the length of the project in years the years remalnlng in the current overhaul or equipment replacement cycle the block of rently being energy units energy curprocessed in energy consumption in the units the energy will be billed in (therms, kwhs, gallons, etc.) monthly peak load in Btus peak load that occurred during the year in Btus the minimum peak load corresponding to a minimum demand surcharge energy consumption in Btus the present value of the equipment replacement costs incurred over the entire life cycle period the present value of the minor overhaul costs incurred over the entire 1 i fe cycle period the year in which an overhaul occurs the number of replacement cycle years in each or overhaul the fraction of a cycle that occurred prior to the current simulation period
2.3.1 Equipment Costs (subroutines COSTEQ and DEFALT) Subroutine COSTEQ calculates the life cycle costs of the equipment used in the simulation. Equipment life cycle costs include first costs, installation costs, annual maintenance, consumables exclusive of fuel (lubricants, etc.), minor overhauls, major overhauls, and replacement costs. If the user has cost data on one or more specific equipment units that he intends to simulate, the cost data should be entered directly using the keywords of the PLANT-EQUIPMENT command. If the user intends to allow the program to size equ i pment automatically and/or to calculate the equipment costs by default, he should examine the def aul t val ues of the REFERENCE-COSTS command and determi ne whether they are appropriate. (Note that the REFERENCE-COSTS defaults are out of date and most 1 i ke ly are not appropri ate. ) The REFERENCE-COSTS are used to cal cul ate the default costsof the various sizes of each equipment type input in the manner described in Sec. V.B.1 of the DOE-2.1A Reference Manual (Ref. 2). The calculation of default equipment costs is done in subroutine DEFALT. Subroutine COSTEQ is called at the end of the PLANT simulation once the equipment hours of operation for various equipment types and sizes is known. Additional data used in the life cycle calculations are entered under the PLANT-COSTS command. The algorithm assumes that the equ ipment us age has been calculated for an entire year and, as a result, the equipment costs will be meaningless for a RUN-PERIOD less than one year in length. Present value factors. The algorithm calculates equipment life cycle costs 1n terms of the1r present value. Several present value factors are precalculated for use in the life cycle calculations of the specific equipment units. The present value factor for labor costs is (V.I04) where IL is the labor inflation rate relative to general inflation (keyword LABOR-INFLTN) and A is the discount rate (keyword DISCOUNT-RATE). Similarly, the present value factor for materials is (V.I05) where 1M is the material inflation rate relative to general inflation expressed as a fraction (keyword MATERIALS-INFLTN/lOO). These factors are used to find the present value of an expense that occurs N yrs years in the future, as will be seen. The accumulative present value factors for labor and materials over the entire project life are given by the formulas V.126
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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
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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
Page 611: TFREZH is the fluid freezing point
Page 615 and 616: 500,000 MBtu of jacket heat will be
Page 617 and 618: a. If the tank has been defined in
Page 619 and 620: Equations (V.29) through (V.32) are
Page 621 and 622: The pumps are not explicitly define
Page 623 and 624: V ar i ab 1 eli s t: Keywords FORTR
Page 625: FORTRAN Engineering Keywords Variab
Page 629 and 630: The heat exchanger UA factor is ass
Page 631 and 632: Keyword FORTRAN Engineering Variabl
Page 633: FORTRAN Engineering Keyword Variabl
Page 638: The load that has just been allocat
Page 642 and 643: 2. RElCOM = where HIRNOMi correspon
Page 644 and 645: or ECOOLT or CAPA, whichever is sma
Page 647 and 648: priority on the generator heat. The
Page 649 and 650: g. The coupled absorption chiller l
Page 652 and 653: Step 8. Step 9. Step 10. Step II. S
Page 654 and 655: Step 34. Recalculate the excess ste
Page 656 and 657: where KAVQi : KAVi + 1. KAVi in tur
Page 658 and 659: 2.3 Economic Calculations Calculati
Page 660: Keywords UNIT INSTALLATION ESCALATI
Page 665: (V.llO) Cyclical Costs. The equipme
Page 669 and 670: Step 6 The cyclical cost coefficien
Page 671 and 672: Q * p-mo Qblock = M Fbill (U29) whe
Page 673 and 674: 4. CHAPTER V REFERENCES 1. J. J. Al
Page 675 and 676: 5. CHAPTER V INDEX (for non-solar e
Page 682 and 683: 1. DESCRIPTION OF THE LIFE-CYCLE CO
Page 686: 1.3 Cost Types In ooE-2, non-energy
Page 691: 1.5 Calculation of Investment Stati
Page 696 and 697: 1.6 Subroutine Deser iption RDESF R
Page 702: DAYLIGHTING CALCULATION IN DOE-2 Fr
Page 708: 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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