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VAV Terminal Box Minimum Airflow & Reheat Coil Capacity Calculator

Easily calculate and compute vav terminal box minimum airflow & reheat coil capacity calculator with accurate equations, live formulas, and expert guidance.

Calculated Result
2.66 kW

Required Reheat Coil Capacity

Required Reheat Coil Capacity

2.66 kW

Reheat Capacity Kw

2.66

Reheat Capacity Btu H

9072

Min Airflow Cfm

240

Delta T F

35

2.66 — kW

Calculation Breakdown

  1. Applied FormulaSizes terminal reheat hydronic/electric coils in Variable Air Volume (VAV) distribution systems based on minimum airflow turndown and supply air temper drop.Q_{\text{reheat}} = 1.08 \cdot \text{CFM}_{\min} \cdot (T_{\text{dis}} - T_{\text{pri}}), \quad \text{CFM}_{\min} = \text{CFM}_{\max} \cdot \text{MinTurndownPct}

VAV Box Reheat Capacity Metric Output

Interactive visualization based on your current inputs

Calculated Value
0.00.71.32.02.7Required Reheat Coil Capacity

What Is the VAV Terminal Box Minimum Airflow & Reheat Coil Capacity Calculator?

This tool computes vav terminal box minimum airflow & reheat coil capacity calculator with high precision arithmetic.

How Does the VAV Terminal Box Minimum Airflow & Reheat Coil Capacity Calculator Work?

Sizes terminal reheat hydronic/electric coils in Variable Air Volume (VAV) distribution systems based on minimum airflow turndown and supply air temper drop.

VAV Terminal Box Minimum Airflow & Reheat Coil Capacity Calculator Formula & Variables

The core mathematical equation utilized by this calculator is expressed as:

Qreheat=1.08⋅CFMmin⁡⋅(Tdis−Tpri),CFMmin⁡=CFMmax⁡⋅MinTurndownPctQ_{\text{reheat}} = 1.08 \cdot \text{CFM}_{\min} \cdot (T_{\text{dis}} - T_{\text{pri}}), \quad \text{CFM}_{\min} = \text{CFM}_{\max} \cdot \text{MinTurndownPct}

Sizes terminal reheat hydronic/electric coils in Variable Air Volume (VAV) distribution systems based on minimum airflow turndown and supply air temper drop.

How to Use the VAV Terminal Box Minimum Airflow & Reheat Coil Capacity Calculator

  1. Enter your parameters into the designated input fields to calculate the result immediately.

Step-by-Step Example Calculation

VAV Terminal Box Minimum Airflow & Reheat Coil Capacity Calculator Example

Input Values:

maxAirflowCfm:800
minTurndownPct:30
primaryAirTempF:55
dischargeAirTempF:90
Worked Steps: Sample evaluation based on standard reference conditions.

Understanding Your Result

The calculated primary figure indicates the optimal or required kW.

Factors That Affect the Result

  • Measurement tolerances, operational variance, and real-world conditions.

When Should You Use This Calculator?

  • Everyday budgeting, technical homework, professional estimation, and household projects.

Assumptions & Limitations

  • Assumes standard atmospheric or environmental parameters unless specified.

Frequently Asked Questions

Calculation Accuracy & Reference Note

Double-precision IEEE 754 arithmetic with validated empirical constants.

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