This is really weird.
- An object is defined with numerous properties
- The property is calculated and stored as a decimal value (2 places)
- I log the value to console to confirm and it is correct (561.77)
- After a few more calculations of other properties I log the same value (561.77, correct)
- When I log the full object, the property somehow rounded up to 562.
Why is it doing this?
The only thing I do is preset all of the object properties = NaN before I solve for each property.
Edit
OK heres the function...
function Airflows($data, isWarmSide) {
var $PROP = (isWarmSide) ? $data.Warm : $data.Cool;
var $AF = $PROP.Airflow;
var $BP = $PROP.Bypass;
var $HX = $PROP.Hx;
var af = $AF.scfm, bp = $BP.scfm, hx = $HX.scfm;
if (!isNaN($AF.scfm)) {
isSCFM = true;
}
else if (!isNaN($AF.acfm)) {
af = $AF.acfm;
bp = $BP.acfm;
hx = $HX.acfm;
isACFM = true;
}
else if (!isNaN($AF.lbsmin)) {
af = $AF.lbsmin;
bp = $BP.lbsmin;
hx = $HX.lbsmin;
isLbsMin = true;
}
else if (!isNaN($AF.lbshr)) {
af = $AF.lbshr;
bp = $BP.lbshr;
hx = $HX.lbshr;
isLbsHr = true;
}
else if (!isNaN($AF.lbshrw)) {
af = $AF.lbshrw;
bp = $BP.lbshrw;
hx = $HX.lbshrw;
isLbsHrw = true;
}
var HasBypass = (bp > 0 && !isNaN(bp) && typeof (bp) !== 'undefined');
//Check if the Bypass is 0
if (!HasBypass) {
$BP.scfm = 0;
$BP.acfm = 0;
$BP.lbsmin = 0;
$BP.lbshr = 0;
$BP.lbshrw = 0;
}
//We have bypass
else {
//Make sure the bypass is not greater entry flow
if (bp > af) {
$PROP.Errors.push(
{ obj: (($data.IsWarmSide) ? $AFB_W : $AFB_W), txt: "Bypass cannot be greater than entry flow." }
);
return $data;
}
}
var _GASES = $PROP.GasComposition;
var gas0 = (_GASES.length > 0) ? parseFloat(_GASES[0].num) : 99.502;
var gas1 = (_GASES.length > 1) ? parseFloat(_GASES[1].num) : 0.498;
let g = Math.round(parseFloat(gas0 + gas1) * 100) / 100;
var Tdry = $PROP.Tdb.F;
var lbwlba = $PROP.Humidity.LbwLba;
var alt = $PROP.Altitude.ft || 0;
var Pg = $PROP.Pg.inWC || 0;
var Pabs = $PROP.Pabs.psia || 14.696;
var PabsIsStd = Pabs == 14.696;
var NO_GAUGE = (Pg === 0);
var IS_SCFM = (!isNaN($AF.scfm));
var IS_ACFM = (!isNaN($AF.acfm));
var IS_LBSMIN = (!isNaN($AF.lbsmin));
var IS_LBSHR = (!isNaN($AF.lbshr));
var IS_LBSHRW = (!isNaN($AF.lbshrw));
var psfa = calcPSFA(alt);
var ALT_PRESS = (NO_GAUGE) ? psfa : Math.round(Pabs * 144 * 1000) / 1000;
var _p;
// Testing to see if a custom gas is used.
// If the sum of Air and Water Vapor is 100 and if NOT Lbm/hr in the Gas Configuration selection
if (g == 100 && gas1 != 100 && getInt($data.GasConfiguration.GasAssignment) > 0) {
if (IS_SCFM) {
$AF.lbshr = Math.round(ConvertSCFMtoLbsHr(af, lbwlba));
$AF.lbsmin = Math.round(($AF.lbshr / 60) * 100) / 100;
$AF.lbshrw = Math.round(($AF.lbshr * parseFloat(1 + lbwlba)));
$AF.acfm = Math.round(ConvertLbsAirToACFM($AF.lbshr, Tdry, ALT_PRESS, lbwlba, _GASES));
if (HasBypass) {
$BP.lbshr = Math.round(ConvertSCFMtoLbsHr(bp, lbwlba));
$BP.lbsmin = Math.round(($BP.lbshr / 60) * 100) / 100;
$BP.lbshrw = Math.round(($BP.lbshr * (1 + lbwlba)));
$BP.acfm = Math.round(ConvertLbsAirToACFM($BP.lbshr, Tdry, ALT_PRESS, lbwlba, _GASES));
}
}
else if (IS_ACFM) {
$AF.lbsmin = 0.0000;
$AF.scfm = Math.round(ConvertFlowToSCFM($AF.acfm, Pabs, Tdry, lbwlba, "ACFM", PabsIsStd));
$AF.lbshr = Math.round(ConvertSCFMtoLbsHr($AF.scfm, lbwlba));
$AF.lbshrw = Math.round($AF.lbshr * parseFloat(1 + lbwlba));
if (isWarmSide) {
$data.Warm.Airflow.lbsmin = Math.round(($AF.lbshr / 60) * 100) / 100;
}
else {
$data.Cool.Airflow.lbsmin = (Math.round(($AF.lbshr / 60) * 100) / 100);
}
console.log("$AF.lbsmin: " + $AF.lbsmin);
console.log("$data.Cool.Airflow.lbsmin [0]: " + $data.Cool.Airflow.lbsmin);
if (HasBypass) {
$BP.scfm = Math.round(ConvertFlowToSCFM($BP.acfm, Pabs, Tdry, lbwlba, "ACFM", PabsIsStd));
$BP.lbshr = Math.round(ConvertSCFMtoLbsHr($BP.scfm, lbwlba));
$BP.lbsmin = Math.round(($BP.lbshr / 60) * 100) / 100;
$BP.lbshrw = Math.round(($BP.lbshr * (1 + lbwlba)));
}
}
else if (IS_LBSMIN) {
$AF.lbshr = Math.round($AF.lbsmin * 60);
$AF.lbshrw = Math.round($AF.lbshr * parseFloat(1 + lbwlba));
$AF.acfm = Math.round(ConvertFlowToACFM($AF.lbshr, alt, Tdry, lbwlba, "LBSHR", true));
$AF.scfm = Math.round(ConvertLbsAirToSCFM($AF.lbshr, 70, Pabs, lbwlba, null));
if (HasBypass) {
$BP.lbshr = Math.round($BP.lbsmin * 60);
$BP.lbshrw = Math.round(($BP.lbshr * (1 + lbwlba)));
$BP.acfm = Math.round(ConvertLbsAirToSCFM($BP.lbshr, Tdry, ALT_PRESS, lbwlba, null));
$BP.scfm = Math.round(ConvertLbsAirToSCFM($BP.lbshr, 70, ((NO_GAUGE) ? psfa : 14.696), lbwlba, null));
}
}
else if (IS_LBSHR) {
$AF.lbshrw = Math.round($AF.lbshr * parseFloat(1 + lbwlba));
$AF.lbsmin = Math.round(($AF.lbshr / 60) * 100) / 100;
$AF.acfm = Math.round(ConvertLbsAirToSCFM($AF.lbshr, Tdry, ALT_PRESS, lbwlba, null));
$AF.scfm = Math.round(ConvertLbsAirToSCFM($AF.lbshr, 70, ((NO_GAUGE) ? psfa : 14.696), lbwlba, null));
if (HasBypass) {
$BP.lbshrw = Math.round(($BP.lbshr * (1 + lbwlba)));
$BP.lbsmin = Math.round(($BP.lbshr / 60) * 100) / 100;
$BP.acfm = Math.round(ConvertLbsAirToSCFM($BP.lbshr, Tdry, ALT_PRESS, lbwlba, null));
$BP.scfm = Math.round(ConvertLbsAirToSCFM($BP.lbshr, 70, ((NO_GAUGE) ? psfa : 14.696), lbwlba, null));
}
}
else if (IS_LBSHRW) {
$AF.lbshr = Math.round($AF.lbshrw / parseFloat(1 + lbwlba));
$AF.lbsmin = Math.round(($AF.lbshr / 60) * 100) / 100;
$AF.acfm = Math.round(ConvertLbsAirToSCFM($AF.lbshr, Tdry, ALT_PRESS, lbwlba, null));
$AF.scfm = Math.round(ConvertLbsAirToSCFM($AF.lbshr, 70, ((NO_GAUGE) ? psfa : 14.696), lbwlba, null));
if (HasBypass) {
$BP.lbshr = $BP.lbshrw;
$BP.lbsmin = Math.round(($BP.lbshr / 60) * 100) / 100;
$BP.acfm = Math.round(ConvertLbsAirToSCFM($BP.lbshr, Tdry, ALT_PRESS, lbwlba, null));
$BP.scfm = Math.round(ConvertLbsAirToSCFM($BP.lbshr, 70, ((NO_GAUGE) ? psfa : 14.696), lbwlba, null));
}
}
}
//Else we have a Custom Gas Selection
else {
/*
Notes:
- We need to DISABLE Humidity
- The Water Vapor gas changes Airflow MASS FLOW RATES
- Air and Water Vapor gases change Humidity
- If Custom Gas, then the Humidities() function will need the ability to solve ALL Humidities (ie: assume all Humidity inputs are NaN)
- A Humidity Change should trigger an Airflow Change (to solve for Mass Flow Rates)
*/
var Mode = getInt($data.GasConfiguration.GasAssignment);
//If we do not have two gases selected OR WaterVapor is equal to 1 OR Mode is Lbm/hr then WE DONT HAVE AIRWATER_ON
var AIRWATER_ON = !(_GASES.length != 2 || _GASES[1].num == 1 || Mode === 0);
//Determine the Pressure Type we are using (are we calculating pressure using altitude, or using absolute pressure)
var PRESS = (Pg === 0) ? Pabs : alt;
//If not lbm/hr
if (Mode > 0) {
if (!isNaN($AF.scfm)) {
$AF.lbshr = Math.round(ConvertToLbsAir($AF.scfm, Tdry, 14.696, _GASES));
$AF.lbshrw = $AF.lbshr;
$AF.lbsmin = Math.round(($AF.lbshr / 60) * 100) / 100;
$AF.acfm = Math.round(ConvertLbsAirToACFM($AF.lbsair, Tdry, PRESS, $PROP.Humidity.LbwLba, ((AIRWATER_ON) ? null : _GASES)));
//Set Bypass
if ($BP.scfm > 0) {
$BP.lbshr = Math.round(ConvertToLbsAir($AF.scfm, Tdry, 14.696, _GASES));
$BP.lbshrw = $BP.lbshr;
$BP.lbsmin = Math.round(($BP.lbshr / 60) * 100) / 100;
}
else {
$BP.scfm = 0;
$BP.acfm = 0;
$BP.lbshr = 0;
$BP.lbshrw = 0;
$BP.lbsmin = 0;
}
}
}
}
console.log("$data.Cool.Airflow.lbsmin [1]: " + $data.Cool.Airflow.lbsmin);
if (HasBypass) {
$HX.scfm = ($AF.scfm - $BP.scfm);
$HX.acfm = ($AF.acfm - $BP.acfm);
$HX.lbsmin = ($AF.lbsmin - $BP.lbsmin);
$HX.lbshr = ($AF.lbshr - $BP.lbshr);
$HX.lbshrw = ($AF.lbshrw - $BP.lbshrw);
}
else {
$HX.scfm = $AF.scfm;
$HX.acfm = $AF.acfm;
$HX.lbsmin = $AF.lbsmin;
$HX.lbshr = $AF.lbshr;
$HX.lbshrw = $AF.lbshrw;
}
console.log("$data.Cool.Airflow.lbsmin [2]: " + $data.Cool.Airflow.lbsmin);
$data.Cool.Airflow.lbsmin = Math.round($data.Cool.Airflow.lbsmin * 100) / 100;
console.log("--- showing data ---");
console.log($data);
return $data;
}
