Plumbing Radiant Manifold Flow Calculator

Audit actual radiant manifold port evidence and independent header meter, preserving missing ports/signed closure discrepancy; not summing assumed zone demands or distributing flow equally.

Description

A manifold closure audit distinguishes known port flows from missing evidence.

A manifold closure audit distinguishes known port flows from missing evidence. Header-minus-known flow remains signed.^[1]

The returned values include Known port flow liters minute, Unknown port count, Signed header minus known ports liters minute, Fully observed manifold closure. The How section below explains the calculation, input rules and interpretation.

When to use Plumbing Radiant Manifold Flow Calculator

Use Plumbing Radiant Manifold Flow Calculator when you need to evaluate the supplied records under the calculation and evidence rules below. No equal allocation, missing-flow extrapolation or assumed zone demands are supplied.

Prepare measured flows, pressures, temperatures or inventories with consistent units. For catalog tools, use independently verified capacities at the stated operating conditions and supply the explicit design demand.

How to use Plumbing Radiant Manifold Flow Calculator and understand its results

Prepare measured flows, pressures, temperatures or inventories with consistent units. For catalog tools, use independently verified capacities at the stated operating conditions and supply the explicit design demand.
Enter observedManifoldPortLitersMinute, manifoldPortEvidenceFlags, observedIndependentHeaderLitersMinute using the field table and calculation rules, then run the tool.
Read knownPortFlowLitersMinute, unknownPortCount, signedHeaderMinusKnownPortsLitersMinute, fullyObservedManifoldClosure. The explanation below defines the units, signs, ordering and any flags or placeholder values.
If the tool reports an input issue, correct the values and run it again. Apply the stated assumptions when interpreting a successfully returned result.

Input field	Meaning	Value type; see rules below	Requirement
observedManifoldPortLitersMinute	Observed manifold port liters minute	list of number	Required
manifoldPortEvidenceFlags	Manifold port evidence flags	list of number	Required
observedIndependentHeaderLitersMinute	Observed independent header liters minute	number	Required

Enter aligned nonempty nonnegative port flows and binary evidence flags, plus nonnegative independent header flow. Return known flow, missing-port count, signed discrepancy and a flag true exactly when every port is observed. The flag does not test numerical agreement.

known=sum(portFlow where evidence=1); discrepancy=header−known

Units, indexing, boundary conditions and exceptional cases are defined in the calculation rules above.

Output field	Meaning	Value type
knownPortFlowLitersMinute	Known port flow liters minute	number
unknownPortCount	Unknown port count	number
signedHeaderMinusKnownPortsLitersMinute	Signed header minus known ports liters minute	number
fullyObservedManifoldClosure	Fully observed manifold closure	boolean

json

{
  "input": {
    "observedManifoldPortLitersMinute": [
      1,
      2,
      3
    ],
    "manifoldPortEvidenceFlags": [
      1,
      0,
      1
    ],
    "observedIndependentHeaderLitersMinute": 5
  },
  "output": {
    "knownPortFlowLitersMinute": 4,
    "unknownPortCount": 1,
    "signedHeaderMinusKnownPortsLitersMinute": 1,
    "fullyObservedManifoldClosure": false
  }
}

Limitations and assumptions

No equal allocation, missing-flow extrapolation or assumed zone demands are supplied.

Numeric inputs, where present, must be finite. Follow the calculation-specific rules for overflow, underflow and exceptional cases. Numeric lists are limited to 10,000 entries; string lists to 128 strings of at most 128 characters each. The rules above may impose smaller limits. Missing required fields, extra fields, wrong value types and violations of the calculation rules are input errors. A successfully returned false flag is an evaluated outcome; its meaning is explained above.

Alternative or Complementary methods

Use Plumbing Hydronic Heating Flow Rate Calculator: Hydronic heat delivery depends on volumetric heat capacity and supply-return temperature difference. Parallel zone flow demands add. For a complementary task, use Plumbing Radiant Floor Heat Output Calculator: A linear floor-emission model uses surface-to-room temperature difference, area and an effective emission coefficient. Cooling remains negative.

References

Plumbing Radiant Manifold Flow Calculator — tool.io

Similar or alternative tools

Plumbing Hydronic Heating Flow Rate Calculator
Hydronic heat delivery depends on volumetric heat capacity and supply-return temperature difference. Parallel zone flow demands add.
Plumbing Radiant Floor Heat Output Calculator
A linear floor-emission model uses surface-to-room temperature difference, area and an effective emission coefficient. Cooling remains negative.