ORNL Heat Pump Design Model

In the following pages, the input parameters for the heat pump specification data file are described. This file has the default name HPDATA.DAT.

To provide a comparison to earlier versions, changes from the Mark III version of the ORNL Heat Pump Design Model (HPDM) are identified by vertical change bars in the extreme leftmost column. Changes from the ORNL Mark IV (MODCON) version are denoted by forward slashes in the extreme leftmost column.

The new data file is free format and was designed to minimize changes necessary to update existing Mark III or Mark IV data sets. The one new line, Line 4, enables the user to specify the desired cooling or heating capacity. The remaining new input requirements are appended to existing lines. The options available to the compressor map, flow control, and line loss sections have been expanded. In the case of flow controls, if optional values are left blank or set to zero, default values will be used.

More details of the model changes since Mark III are described in the Mark IV (June 1991) and Mark V (July 1994) reports that accompany this description.

The compressor simulation can now use the standardized ARI ten-coefficient format described in ARI 540-91, Method For Presentation Of Compressor Performance Data. As these coefficients should be generally available from the compressor manufacturers, this is now the easiest—and usually the most accurate—method of representing compressors in the model.

If an ARI standardized ten-coefficient representation is not available or feasible (such as when the user has less than 10 compressor data points), six-coefficient curve-fit representations for the HPDATA file can be generated as an output file from the provided ORNL compressor map-fitting program. This output file can be imported into an existing heat pump model data set with minimal editing as given in the map-fitting program description sheets.

The user can now specify the diameter, length, and number of capillary tubes and short-tube orifices. TXV distributor nozzle and tube sizes and lengths are also user-selectable. Extra line pressure drop for ancillary components based on a nominal refrigerant flow rate is another new option.

In the present Mark V version, eight HFCs, three HCFCs, and one natural refrigerant are available using Downing or Martin-Hou equation-of-state representations. These include leading HFC azeotropic and near-azeotropic R-22 and R-502 alternatives—R-410A, R-507, and R404A. A variety of refrigerant naming conventions are allowed.

TITLE and OUTPUT DATA: First Line | HTITLE Descriptive title for heat pump system defined by this data set SAMPLE (maximum of 80 characters) New Line LPRINT Output switch to control the type and amount of printed results 1 | =-2, for minimum output from contour data generation front end, | no heat pump model output | =-1, for diagnostic output from contour data generation front end, | no heat pump model output =0, for minimum heat pump model output with only an energy input and output summary =1, for a summary of the system operating conditions and component performance calculations as well as the energy summary =2, for output after each intermediate iteration converges =3, for continuous output during intermediate iterations MODE and REFRIGERANT DATA: New Line NCORH Switch to specify cooling or heating mode 1 =1, for cooling mode =2, for heating mode =3, for dual mode (used in conjunction with contour data generation) / NR Refrigerant -- 12, 22, 114, 502, 134a, 32, 123, 124, 125, 22 / 143a, 152a, 290, 404A, 410A, and 507 (If NR is omitted, the default is R-22; / see following page for currently accepted input formats for refrigerant names: / either the refrigerant ID, the refrigerant number, or the listed alternative names, / except for those in parentheses, may be specified.) / FIXED CAPACITY OPTION: / / New Line / / ICAPFLAG Option for capacity scaling 0 / =0, for no capacity scaling / =1, for capacity scaling / / CAPACITY Desired output capacity (Btu/h), cooling or heating, 36000. / to be obtained by adjusting compressor displacement. / / EPSILON Acceptable tolerance on capacity (Btu/h). 50. CHARGE INVENTORY / SUPERHEAT DATA: New Line ICHRGE Indicator for specifying charge inventory balance choice 0 =0, no charge balance -- charge to be determined; specify compressor inlet superheat, specify flow control requirements. =1, charge balance -- high-side determined; specify refrigerant charge, estimate compressor inlet superheat, specify flow control requirements. |* =2, charge balance -- low-side determined; | specify refrigerant charge, | specify compressor inlet superheat, | determine flow control requirements. SUPER Specified (if ICHRGE=0,2) or estimated (if ICHRGE=1) 20.0 refrigerant superheat (or quality) at the compressor shell inlet (F or negative of the desired quality fraction) REFCHG Specified system refrigerant charge (lbm) (5.882) (not needed if ICHRGE=0) | MVOID Switch to specify heat exchanger void fraction (slip) method 0 | for charge inventory calculations | | =0, default method -- Zivi void fraction model | with analytical solution | for a constant heat flux approximation | >0, various user-selected void fraction models | with variable heat flux effects | (which require slower numerical solutions) | -- mass-flow independent methods | =1, Homogeneous (no slip) | =2, Zivi | =3, Lockhart-Martinelli | =4, Thom | =5, Baroczy | -- mass-flow dependent methods | =6, Hughmark | =7, Premoli * | =8, Tandon | | CHARGE INVENTORY CALCULATIONAL DATA: | | New Line | | IMASS Switch for option to omit refrigerant charge calculations, 1 | only active for ICHRGE=0 case | =0, if charge calculations are to be omitted | =1, if charge calculations are to be made | | Compressor and Accumulator Geometry Values for Refrigerant Charge Calculations: | (not required if IMASS = 0 and ICHRGE = 0) | (if an accumulator is not used, set accumulator height ACCHGT to 0.0) | | VOLCMP Internal void space volume of compressor (cu. in.) 395.0 | | ACCHGT Height of accumulator (in.) 10.0 | | ACCDIA Internal diameter of accumulator (in.) 4.834 | | OILDIA Inner diameter of oil return hole J-tube (in.) 0.035 | UPPDIA Inner diameter of upper hole in J-tube (in.) 0.040 | | HOLDIS Vertical distance between holes (in.) 2.50 | | ATBDIA Inner diameter of J-tube (in.) 0.680 FLOW CONTROL DEVICE DATA: (the variables on this line depend on the type of flow control device selected) New Line Specified or Estimated Condenser Subcooling: | IREFC =0, for specified or estimated refrigerant subcooling 0 | at the condenser exit | | DTROC Specified (if ICHRGE=0,1) or estimated (if ICHRGE=2) 15.0 | refrigerant subcooling (or quality) at the condenser exit | (F or negative of the desired quality fraction) / Optional Italicized Entries To Override Default Flow Control Specifications / Used For Autosizing At Specified Subcooling / / Optional entries must follow DTROC on the same line, be separated by spaces / or commas and be entered as follows until all desired changes are made, / i.e., capillary tube input, short-tube-orifice input, TXV input, as needed / / Capillary Tube / NCAP, CAPL, default values of 1, 80. / / Short-Tube-Orifice / NORF, ORIFL, ORIFCD, default values of 1, 0.5, and 0.0, respectively / / Thermostatic Expansion Valve / STATIC, SUPRAT, SUPMAX, BLEEDF, NZTBOP, IDNZ, IDTB, XLTUBE / default values of 6.0, 11.0, 13.0, 1.15, 0.0, 4, 3, 30, respectively Thermostatic Expansion Valve: / (italicized entries are optional) IREFC =1, for a thermostatic expansion valve (TXV) 1 TXVRAT Rated capacity of the TXV (tons) 1.688 STATIC Static superheat setting for the TXV (F°) 6.0 SUPRAT TXV superheat at rating conditions (F°) 11.0 SUPMAX Maximum effective operating superheat (F°) 13.0 BLEEDF TXV bypass or bleed factor 1.15 NZTBOP Switch to omit TXV nozzle and tube pressure drop calculations 0.0 / =0.0, to include distributor nozzle and tube pressure drops / =1.0, to omit nozzle and tube pressure drop calculations / / IDNZ ID number (1-10) of the TXV distributor nozzle size (approx. tons 4 / of evaporator capacity) based on Sporlan Bulletin 20-10 (1975)

/ XLTUBE length of each distributor tube (inches) 30. / (There are as many distributor tubes as there are circuits in the evaporator.) Capillary Tube(s): / (italicized entries are optional) IREFC =2, for capillary tube(s) 2 / CAPD capillary tube inside diameter (in.) 0.1148 NCAP Number of capillary tubes in parallel 1 / CAPL Capillary tube length (in.) 80. Short Tube Orifice(s): / (italicized entries are optional) IREFC =3, for short tube orifice(s) 3 / refrigerant-specific correlations from Kim and O’Neal (1994) / used for R-22, R-134a, and R-12; for other refrigerants, / the R-22 correlations are assumed ORIFD Diameter of the short-tube orifice (in.) 0.0715 / 0.043 < ORIFD < 0.0676, within correlation range of model / NORF Number of short-tube-orifices in parallel 1 / ORIFL Length of short-tube-orifice (in.) 0.5 / 0.375< ORIFL 1.0, within correlation range of model / ORIFCD Chamfer depth of inlet to short-tube-orifice (in.) 0.0 / = 0.0, for a sharp-edged inlet / 0.0 < ORIFCD 0.02, for a chamfered inlet within correlation range of model ESTIMATES of the LOW- and HIGH-SIDE REFRIGERANT SATURATION TEMPERATURES: New Line TSICMP Estimate of the refrigerant saturation temperature 45.0 at the compressor shell inlet (°F) TSOCMP Estimate of the refrigerant saturation temperature 110.0 at the compressor shell outlet (°F) GENERAL COMPRESSOR DATA: New Line ICOMP Switch to specify which compressor submodel is to be used, 2 =1, for the efficiency-and-loss model (single-speed only) =2, for the map-based model (single- or variable-speed) | DISPL Total piston displacement for selected compressor (cu. in.) 3.024 | | CMPSPD Speed/frequency-determining-parameter for selected compressor -- | | Operating frequency ratio (relative to nominal frequency on Line 9.2), 1.0 | if value 5 and ICOMP= 2; | Operating drive frequency (Hz), (60.0) | if value > 5 and ICOMP= 2, | Synchronous compressor motor speed (rpm) (3600.) if ICOMP=1 and FLMOT is specified on LINE #9; Rated compressor motor speed (rpm) (3450.) if ICOMP=1 and FLMOT is to be calculated QCAN Compressor shell heat loss rate (Btu/h), 0.0 used if CANFAC is 0.0 CANFAC Switch to control the method of specifying 0.1 compressor shell heat loss rate, QCAN =0.0, to specify QCAN explicitly <1.0, to calculate QCAN as a fraction of compressor input power, POW, (i.e., QCAN = CANFAC * POW) | =1.0, QCAN is based on map submodel of CANFAC | (Map-based model only, Line 9.8) >1.0, to calculate QCAN from the relationship : QCAN = 0.90 * [1 - {motor * mechanical }] * POW, (only if ICOMP = 1) COMPRESSOR DATA FOR EFFICIENCY-AND-LOSS MODEL: (ICOMP=1) New Line VR Compressor actual clearance volume ratio 0.06 EFFMMX Maximum efficiency of the compressor motor 0.82 ETAISN Isentropic efficiency of the compressor 0.70 ETAMEC Mechanical efficiency of the compressor 0.80 New Line MTRCLC Switch to determine whether to calculate the 0 full load motor power (FLMOT) or to use the input value =0, to calculate FLMOT =1, to use the input value of FLMOT FLMOT Compressor motor output at full load (kW) ( ) | (not used if MTRCLC = 0) QHILO Heat transfer rate from the compressor inlet 300.0 line to the inlet gas (Btu/h), used if HILOFC=0.0 HILOFC Switch to determine internal heat transfer 0.0 from the high side to the low side, QHILO = 0.0, to specify QHILO explicitly < 1.0, to calculate QHILO = HILOFC * POW 1.0, to calculate QHILO = 0.03 * POW OR | MAP-BASED COMPRESSOR MODEL INPUT DATA : | (ICOMP=2, Preferred Alternative To Efficiency-Based Compressor Input, | Alternative input described on following pages) | MAP-BASED COMPRESSOR MODEL INPUT DATA: | | General Input Data (Frequency-Independent): | | New Line | | CTITLE Descriptive title for map-based compressor data MAP DATA | | New Line | MODEDT Switch indicating type of compressor data representation 3 | =1, six-coefficient biquadratic curve fits to compressor input power | and refrigerant mass flow rate | =2, six-coefficient biquadratic curve fits to compressor shell isentropic | and volumetric efficiencies / =3, ten-coefficient ARI 540-91 curve fits to compressor input power / and refrigerant mass flow rate | | ICMPDT Switch identifying drive efficiency level of base compressor data 2 | =0, first-generation inverter-driven induction-motor (IDIM) efficiency | =1, state-of-the-art IDIM efficiency | =2, ideal sine-wave-driven, induction motor (SWDIM) efficiency | =3, electronically-commutated motor (ECM) efficiency | | ICDVCH Switch choosing selected drive efficiency level 2 | (to convert base compressor data) | =0, first-generation IDIM efficiency | =1, state-of-the-art IDIM efficiency | =2, ideal SWDIM efficiency | =3, ECM efficiency | | CSIZMT If > 0.0, nominal motor size for selected compressor (hp), (2.25) | used to determine relative motor loading | and resultant motor efficiency | | If < 0.0, (negative of) specified percentage of nominal loading -130.0 | at which the motor efficiency of the selected compressor | is to be evaluated, also (if CMPFRQ = CFRQNM) | the required motor size will be calculated (auto-sizing) | | CFRQNM Nominal frequency for selected motor rating (Hz) 60.0 | | CVLTNM Nominal voltage for selected motor rating (Volts) 230.0 | -- induction motors only | | CVLHZM Selected operating volts/Hertz ratio multiplier (range of 0.85 to 1.15) 1.0 | -- induction motors only | | General Input Data (Frequency-Independent) Continued: | | New Line | | NHZ Number of frequencies for which compressor-data curve-fits 1 | are available, | | DISPLB Base compressor displacement for compressor map (cubic inches) 3.024 | | SUPERB Base 'superheat' value for compressor map, | If 0, base superheat entering compressor (F°), 20.0 | If < 0, negative of return gas temperature into compressor (°F) (-65.0) | | CSIZMB Motor size for base compressor (hp) 2.25 | | CFRQNB Nominal frequency for base motor rating (Hz) 60.0 | | CVLTNB Nominal voltage for base motor rating (volts) 230.0 | -- induction motors only | | | MAP DATA AT SPECIFIED COMPRESSOR FREQUENCY (HZVAL): | | New Line | | HZVAL Compressor frequency value (Hz) for which map data follow 60.0 | | RPMVAL Nominal compressor speed at given frequency (rpm) 3450.0 | (used to determine nominal compressor motor torque) | | VLTVAL Compressor motor voltage (volts) at given frequency 230.0 | for which map data apply -- induction motors only | / (If MODEDT = 1 or 3) | POWADJ Adjustment factor to curve-fit for power at given frequency 1.0 | (set to 1.0 if value is omitted) | | XMRADJ Adjustment factor to curve-fit for mass flow rate at given frequency 1.0 | (set to 1.0 if value is omitted) | | (If MODEDT = 2) | ETIADJ Adjustment factor to curve-fit for isentropic efficiency at given frequency 1.0 | (set to 1.0 if value is omitted) | | ETVADJ Adjustment factor to curve-fit for volumetric efficiency at given frequency 1.0 | (set to 1.0 if value is omitted) | | ( If MODEDT = 1, Read The Following Two Lines) | | New Line | | CPOWER Coefficients for bi-quadratic fit to compressor power (kW) | as a function of compressor suction and discharge | saturation temperatures (°F), TSICMP and TSOCMP, | of the form -- | POWER(IHZ) = | CPOWER (1,IHZ) * TSOCMP 2 + ( ) | CPOWER (2,IHZ) * TSOCMP + ( ) | CPOWER (3,IHZ) * TSICMP 2 + ( ) | CPOWER (4,IHZ) * TSICMP + ( ) | CPOWER (5,IHZ) * TSOCMP * TSICMP + ( ) | CPOWER (6,IHZ) ( ) | | New Line | | CMASSF Coefficients for bi-quadratic fit | to compressor mass flow rate (lbm/hr) | as a function of compressor suction and discharge | saturation temperatures (°F),TSICMP and TSOCMP, | of the form -- | | XMR(IHZ) = | CMASSF (1,IHZ) * TSOCMP 2 + ( ) | CMASSF (2,IHZ) * TSOCMP + ( ) | CMASSF (3,IHZ) * TSICMP 2 + ( ) | CMASSF (4,IHZ) * TSICMP + ( ) | CMASSF (5,IHZ) * TSOCMP * TSICMP + ( ) | CMASSF (6,IHZ) ( ) | | (If MODEDT = 2, Read The Following Two Lines) | | New Line | | CETAIS Coefficients for bi-quadratic fit | to compressor shell isentropic efficiency | as a function of compressor suction and discharge | saturation temperatures (°F), TSICMP and TSOCMP, | of the form -- | ETAISN(IHZ) = | CETAIS (1,IHZ) * TSOCMP 2 + ( ) | CETAIS (2,IHZ) * TSOCMP + ( ) | CETAIS (3,IHZ) * TSICMP 2 + ( ) | CETAIS (4,IHZ) * TSICMP + ( ) | CETAIS (5,IHZ) * TSOCMP * TSICMP + ( ) | CETAIS (6,IHZ) ( ) | | New Line | | CETAVL Coefficients for curve fit | to compressor shell volumetric efficiency | as a function of pressure ratio PR and discharge pressure PD (psia) | of the form -- | ETAVOL(IHZ) = | CETAVL (1,IHZ) * (PR - 1.) + ( ) | CETAVL (2,IHZ) * (PR - 1.) * PD + ( ) | CETAVL (3,IHZ) * (PR - 1.) * PD * PD + ( ) | CETAVL (4,IHZ) ( ) | / ( If MODEDT = 3, Read The Following Two Lines) / / New Line / / CPOWER Coefficients for ten-coefficient ARI 540-91 representation / of compressor power (Watts) / as a function of compressor suction and discharge saturation temperatures (°F), / TSICMP and TSOCMP, / of the form -- / / POWER(IHZ) = / CPOWERA (1,IHZ) + 275.57071 / CPOWERA (2,IHZ) * TSICMP + -21.546331 / CPOWERA (3,IHZ) * TSOCMP + 25.208069 / CPOWERA (4,IHZ) * TSICMP**2 + -0.29343623 / CPOWERA (5,IHZ) * TSOCMP * TSICMP + 0.48438260 / CPOWERA (6,IHZ) * TSOCMP**2 + -0.15513997 / CPOWERA (7,IHZ) * TSICMP**3 + -0.00033087510 / CPOWERA (8,IHZ) * TSOCMP * TSICMP**2 + 0.00098385545 / CPOWERA (9,IHZ) * TSICMP * TSOCMP**2 + -0.00036841937 / CPOWERA(10,IHZ) * TSOCMP**3 0.00020905216 / / New Line / / CMASSF Coefficients for ten-coefficient ARI 540-91 representation / of compressor mass flow rate (lbm/hr) / as a function of compressor suction and discharge / saturation temperatures (°F),TSICMP and TSOCMP, / of the form -- / / XMR(IHZ) = / CMASSFA (1,IHZ) + 29.000366 / CMASSFA (2,IHZ) * TSICMP + 3.4896154 / CMASSFA (3,IHZ) * TSOCMP + 5.5909472 / CMASSFA (4,IHZ) * TSICMP**2 + 0.058079902 / CMASSFA (5,IHZ) * TSOCMP * TSICMP + 0.041391749 / CMASSFA (6,IHZ) * TSOCMP**2 + -0.066189520 / CMASSFA (7,IHZ) * TSICMP**3 + 0.00019594388 / CMASSFA (8,IHZ) * TSOCMP * TSICMP**2 + -0.00016566363 / CMASSFA (9,IHZ) * TSICMP * TSOCMP**2 + -0.00021479024 / CMASSFA(10,IHZ) * TSOCMP**3 0.00020337809 / / | (Repeat The Preceding 3 Lines For Each Compressor Frequency, IHZ=1, NHZ) | | Compressor Shell Heat Loss Correlation : / (This Line Is Only Included If QCAN = 1.0 Under General Compressor Data) | | New Line | | CQCAN Coefficients of quadratic fit to compressor shell heat loss | as a function of compressor dischargesaturation temperature (°F) | of the form -- | CANFAC = | CQCAN (1) * TSOCMP + -1.704E-02 | CQCAN (2) * TSOCMP 2 + 5.610E-05 | CQCAN (3) 1.314E+00 INDOOR UNIT DATA: New Line Indoor Operating Conditions: TAIII Air temperature entering the indoor unit (°F) 80.0 RHII Relative humidity of the air entering the indoor unit 0.50 | New Line | | Indoor Blower: | | FRQIDF Operating frequency parameter for indoor blower — | | if 5, operating frequency ratio relative to nominal given by FRQNMI 1.0 | if > 5, operating frequency (Hz) (60.0) | | FRQNMI Nominal indoor blower frequency (Hz) 60.0 | | QANMI Nominal air flow rate (cfm) 1200. | | SIZMTI ECM blower motor sizing parameter — | (SIZMTI is only used if ICHIDF=3) | | > 0.0, nominal blower motor size (hp), (0.33) | used to determine relative motor loading | and resultant ECM efficiency | | < 0.0, (negative of) percentage of nominal loading -75.0 | at which the ECM efficiency is to be evaluated, | also -- if FRQIDF = FRQNMI -- | the required motor size will be calculated (auto-sizing) | | FANEFI Fan / fan-motor efficiency parameter — | | 1.0, specified fixed value of separate or combined | efficiencies of fan and/or drive: | (those values not explicitly specified by FANEFI | will be calculated based on ICHIDF selection) | | If ICHIDF < 0, specified value of (0.30) | combined fan / fan-motor efficiency | | If ICHIDF 0, specified fan-only efficiency; 0.45 | | FANEFI... >1.0, directly-specified power (watts) of reference drive (293.0) | at nominal air flow rate (if available measured | power is not at selected nominal cfm, then ratio | the measured power by cube of cfm ratio), | at reference inlet air temperatures | of 70°F heating and 80°F cooling | | IRFIDF Integer switch to identify reference drive type -1 | if FANEFI is used to specify nominal fan power | (only used if FANEFI > 1.0) | | < 0, No reference drive type to be used, | gives a constant implicit drive efficiency with speed | | 0, Nominal input power is referenced to choice of following drives -- | (drive efficiency will vary with speed) | = 0, specifies a first-generation IDIM drive | = 1, specifies a state-of-the-art IDIM drive | = 2, specifies an ideal SWDIM drive | = 3, specifies an ECM drive | | ICHIDF Integer switch for choosing selected drive type: -1 | For use in combination with given FANEFI values | (If FANEFI 1.0) | or | For conversion from reference IRFIDF values | to selected ICHIDF drive type | (If FANEFI > 1.0) | | < 0, drive efficiency assumed constant as explicitly | or implicitly given by FANEFI | (If IRFIDF < 0 and FANEFI > 1.0, | ICHIDF will be automatically set to -1) | | 0, drive efficiency computed using choice of following drives -- | (drive efficiency will vary with speed) | = 0, specifies a first-generation IDIM drive | = 1, specifies a state-of-the-art IDIM drive | = 2, specifies an ideal SWDIM drive | = 3, specifies an ECM drive | DDUCT Indoor duct sizing parameter — If > 0, equivalent diameter of each of 6 identical air ducts (in.) (6.0) -- each with an equivalent length of 100 ft | If 0, (negative of) specified external pressure drop of duct system -0.15 | -- independent of specified air flow rate or fan speed | (Note: DDUCT is not used in fan power calculations if FANEFI > 1.0) FIXCAP House heating load (Btu/h), optional, used to calculate 0.0 the necessary backup resistance heat in the heating mode New Line Indoor Heat Exchanger Configuration: AAFI Frontal area of the coil (sq. ft.) 3.802 NTI Number of refrigerant tube rows in the direction of air flow 4.0 NSECTI Number of equivalent, parallel refrigerant circuits in heat exchanger 6.0 WTI Spacing of the refrigerant tubes in the direction of air flow (in.) 0.625 STI Spacing of the refrigerant tube passes 1.00 perpendicular to the direction of air flow (in.) RTBI Total number of return bends in heat exchanger (all circuits) 104.0 New Line Indoor Heat Exchanger Configuration (cont.): FINTYI Switch to specify the type of fin surface, 2.0 = 1.0, for smooth fins = 2.0, for general wavy (sinusoidal) or zig-zag (corrugated) fins -- using multipliers to smooth fin equations = 3.0, for general louvered (simple-strip) fins -- using multipliers to smooth fin equations | = 4.0, for specific zig-zag fin designs | = 5.0, for specific louvered (simple-strip) fin designs FPI Fin pitch (fins/in.) 13.0 DELTAI Fin thickness (in.) 0.010 DEAI Outside diameter of the refrigerant tubes (in.) 0.3325 DERI Inside diameter of the refrigerant tubes (in.) 0.3085 XKFI Thermal conductivity of the fins (Btu/hr-ft-~F) 128.3 XKTI Thermal conductivity of the tubes (Btu/hr-ft-~F) 225.0 HCONTI Fraction of the default computed contact conductance 100.0 between the fins and tubes | New Line | | Fin Patternation Data for Indoor Coil: | / If FINTYI < 4.0, input dummy parameters to skip line. / / NDUM Dummy integer 0 / / XDUM Dummy real 0.0 / | If FINTYI = 4.0, | | NFPZGI Number of fin patterns per row of tubes in flow direction (integer) 2 | | FPDZGI Fin pattern depth (in) 0.045 | | If FINTYI = 5.0, | | NSLVI Number of strips in an enhanced zone (integer) (4) | | XLSLVI Length of enhanced louvered zone (mm) (8.0) | | XWSLVI Width of single strip in flow direction (mm) (2.0) | | New Line | | Heat Transfer and Pressure Drop Multipliers for Indoor Coil : | | HTRMLI Refrigerant-side heat transfer multiplier 1.0 | | PDRMLI Refrigerant-side pressure-drop multiplier 1.0 | | HTAMLI Air-side heat transfer multiplier 1.0 | | PDAMLI Air-side coil pressure-drop multiplier 1.0 | | CABMLI Air-side system pressure-drop multiplier 1.0 | OUTDOOR UNIT DATA: New Line Outdoor Operating Conditions: TAIIO Air temperature entering the heat exchanger (F) 82.0 RHIO Relative humidity of the air entering the heat exchanger 0.40 | New Line | | Outdoor Fan: | | FRQODF Operating frequency parameter for outdoor fan — | | if 5, operating frequency ratio relative to nominal given by FRQNMO 1.0 | if > 5, operating frequency (Hz) (60.0) | | FRQNMO Nominal outdoor fan frequency (Hz) 60.0 | | QANMO Nominal air flow rate (cfm) 3000.0 | | SIZMTO ECM blower motor sizing parameter — | (SIZMTO is only used if ICHODF=3) | | > 0.0, nominal blower motor size (hp), (0.25) | used to determine relative motor loading | and resultant ECM efficiency | | < 0.0, (negative of) percentage of nominal loading -75.0 | at which the ECM efficiency is to be evaluated, | also -- if FRQODF = FRQNMO -- | the required motor size will be calculated (auto-sizing) | | FANEFO Fan / fan motor efficiency parameter — | | 1.0, specified fixed value of separate or combined | efficiencies of fan and/or drive: | (those values not explicitly specified by FANEFO | will be calculated based on MFANFT / ICHODF selections) | | If MFANFT = 0 and ICHODF < 0, specified value of (0.21) | combined fan / fan motor efficiency | | If MFANFT = 0 and ICHODF 0, (0.35) | specified fan-only efficiency | | If MFANFT = 1 and ICHODF < 0, (0.60) | specified drive efficiency | | FANEFO Fan / fan motor efficiency parameter (continued) — | 1.0 | If MFANFT = 1 and ICHODF => 0, 0.00 | specified value is ignored, | model calculates both fan and drive efficiencies | | >1.0, directly-specified power (watts) of reference drive 220.0 | at nominal air flow rate (if available measured | power is not at selected nominal cfm, then ratio | the measured power by cube of cfm ratio), | at reference inlet air temperatures | of 47°F heating or 95°F cooling | | IRFODF Integer switch to identify reference drive type -1 | if FANEFO is used to specify nominal fan power | (only used if FANEFO > 1.0) | | < 0, No reference drive type to be used, | gives a constant implicit drive efficiency with speed | | 0, Nominal input power is referenced to choice of following drives -- | (drive efficiency will vary with speed) | = 0, specifies a first-generation IDIM drive | = 1, specifies a state-of-the-art IDIM drive | = 2, specifies an ideal SWDIM drive | = 3, specifies an ECM drive | | ICHODF Integer switch for choosing selected drive type: -1 | For use in combination with given FANEFO values | (If FANEFO 1.0) | or | For conversion from reference IRFODF values | to selected ICHODF drive type | (If FANEFO > 1.0) | < 0, drive efficiency assumed constant as explicitly | or implicitly given by FANEFO | (If IRFODF < 0 and FANEFO > 1.0, | ICHODF will be automatically set to -1) | | 0, drive efficiency computed using choice of following drives -- | (drive efficiency will vary with speed) | = 0, specifies a first-generation IDIM drive | = 1, specifies a state-of-the-art IDIM drive | = 2, specifies an ideal SWDIM drive | = 3, specifies an ECM drive MFANFT Switch for using static efficiency vs specific speed 0 for the efficiency of the outdoor fan — =0, specified value of FANEFO is used MFANFT... =1, curve fit for fan static efficiency is used -- with fan motor efficiency either specified by FANEFO or calculated internally (should not be chosen if FANEFO > 1.0) New Line Outdoor Heat Exchanger Configuration: AAFO Frontal area of the coil (sq. ft.) 14.713 NTO Number of refrigerant tube rows in the direction of air flow 1.0 NSECTO Number of equivalent, parallel refrigerant circuits in heat exchanger 3.0 WTO Spacing of the refrigerant tubes in the direction of air flow (in.) 0.866 STO Spacing of the refrigerant tube passes 1.00 perpendicular to the direction of the air flow (in.) RTBO Total number of return bends in heat exchanger (all circuits) 21.0 New Line Outdoor Heat Exchanger Configuration (cont.): FINTYO Switch to specify the type of fin surface, 2.0 = 1.0, for smooth fins = 2.0, for general wavy (sinusoidal) or zig-zag (corrugated) fins -- using multipliers to smooth fin equations = 3.0, for general louvered (simple-strip) fins -- using multipliers to smooth fin equations | = 4.0, for specific zig-zag fin designs | = 5.0, for specific louvered (simple-strip) fin designs FPO Fin pitch (fins/in.) 20.0 DELTAO Fin thickness (in.) 0.005 DEAO Outside diameter of the refrigerant tubes (in.) 0.395 DERO Inside diameter of the refrigerant tubes (in.) 0.371 XKFO Thermal conductivity of the fins (Btu/hr-ft-°F) 128.3 XKTO Thermal conductivity of the tubes (Btu/hr-ft-°F) 225.0 HCONTO Fraction of the default computed contact conductance 100.0 between the fins and tubes Fin Patternation Data for Outdoor Coil: | New Line | / If FINTYO < 4.0, input dummy parameters NDUM and XDUM to skip line as for indoor coil. | | If FINTYO = 4.0, | | NFPZGO Number of fin patterns per row of tubes in flow direction (integer) 2 | | FPDZGO Fin pattern depth (in.) 0.045 | | If FINTYO = 5.0, | | NSLVO Number of strips in an enhanced zone (integer) (4) | | XLSLVO Length of enhanced louvered zone (mm) (8.0) | | XWSLVO Width of single strip in flow direction (mm) (2.0) | New Line | | Heat Transfer and Pressure Drop Multipliers for Outdoor Coil : | | HTRMLO Refrigerant-side heat transfer multiplier 1.0 | | PDRMLO Refrigerant-side pressure-drop multiplier 1.0 | | HTAMLO Air-side heat transfer multiplier 1.0 | | PDAMLO Air--side coil pressure-drop multiplier 1.0 | | CABMLO Air--side system pressure-drop multiplier 1.0 CONFIGURATION OPTIONS DATA: New Line MCMPOP Switch for adding compressor can heat loss to air in the outdoor coil 2 =0, heat loss not added to outdoor air =1, heat loss added to air before crossing the outdoor coil =2, heat loss added to air after crossing the outdoor coil MFANIN Switch for adding heat loss from the indoor fan to air stream, 2 settings are similar to those for MCMPOP MFANOU Switch for adding heat loss from the outdoor fan to air stream, 2 settings are similar to those for MCMPOP REFRIGERANT LINES DATA: New Line / Heat Transfer And Additional Pressure Drop in Refrigerant Lines : QSUCLN If > 0, rate of heat gain in the compressor suction line (Btu/h); 0.0 If < 0, the negative of the desired temperature rise (-10.) in the suction line (F°) QDISLN Rate of heat loss in the compressor discharge line (Btu/h) 0.0 QLIQLN Rate of heat loss in the liquid line (Btu/h) 0.0 / The following are optional values that can be added to the previous line. / / DPSLN Additional suction line pressure drop at nominal mass flow (psia) 0.0 / / DPDLN Additional discharge line pressure drop at nominal mass flow (psia) 0.0 / / DPLLN Additional liquid line pressure drop at nominal mass flow (psia) 0.0 / / XMRNOM Nominal mass flow rate for above pressure drops (lbm/hr) 0.0 / (at a given mass flow rate, these added pressure drops are proportional / to [flow / nom. flow]1.8 ) New Line Lines Between Coils and from Reversing Valve to Coils: DLL Inside diameter of the liquid line (in.) 0.2885 XLEQLL Equivalent length of the liquid line (ft.) 30.0 DLRVIC Inside diameter of the vapor line between the reversing valve 0.7260 and the indoor coil (in.) XLRVIC Equivalent length of the vapor line between the reversing valve 30.0 and the indoor coil (ft.) DLRVOC Inside diameter of the vapor line between the reversing valve 0.7260 and the outdoor coil (in.) XLRVOC Equivalent length of the vapor line between the reversing valve 2.0 and the outdoor coil (ft.) New Line Lines from the Reversing Valve to the Compressor: DSLRV Inside diameter of the suction line from the reversing valve 0.7260 to the compressor inlet (in.) XLEQLP Equivalent length of the low-pressure line from the reversing valve 5.0 to the compressor inlet (ft.) DDLRV Inside diameter of the discharge line from the compressor outlet 0.4760 to the reversing valve (in.) XLEQHP Equivalent length of the high-pressure line from the compressor outlet 2.0 to the reversing valve (ft.) | SOLUTION CONVERGENCE CRITERIA : | | New Line | | Iteration Convergence Parameters : | (if set to zero or a blank line, the following defaults will be used) | | AMBCON Convergence parameter for the iteration on evaporator inlet air 0.20 | temperature (°F) | | CNDCON Convergence parameter for the iteration on condenser exit subcooling 0.20 | (or on exit quality * 200) -- used when IREFC = 0 on Line 6 (F°); | also the quantity {2 * CNDCON} is used as the convergence parameter | for the charge balancing iteration when ICHRGE =2 | | FLOCON Convergence parameter for iteration on refrigerant mass flow rate 0.20 | -- used when IREFC › 0 on Line 6 (equivalent F°), | value is specified as if it were in degrees F and is scaled | internally (by 1/20th) to give a mass flow convergence factor | | EVPCON Convergence parameter for iteration on evaporator exit superheat (F°), 0.50 | (or on exit quality * 500); | Also the quantity {2 * EVPCON} is used as the convergence parameter | for the charge balancing iteration when ICHRGE =1 | | CONMST Convergence parameter for iterations on 0.003 | evaporator tube wall temperatures in subroutine EVAP | and dew-point temperature in subroutine XMOIST (F°) | | CMPCON Convergence parameter for iteration on suction gas enthalpy 0.05 | in the efficiency-and-loss compressor model (Btu/lbm) -- | only used when ICOMP = 1 on Line 8 | | TOLH Tolerance parameter used by refrigerant routines 0.001 | in calculating properties of superheated vapor | when converging on a known enthalpy value (Btu/lbm) | | TOLS Tolerance parameter used by refrigerant routines 0.00005 | in calculating properties of superheated vapor | when converging on a known entropy value (Btu/lbm/°R)

IDTB	1	2	3	4	5
Tube OD (in)	5/32	3/16	1/4	5/16	3/8

IDNZ	1	2	3	4	5	6	7	8	9	10
Nozzle Size (tons)	1	1.5	2	2.5	3	4	5	6	8	10