Liquid Cooling Heat Loss Calculator

Detailed Description

This calculator estimates the heat removed by liquid cooling systems, using flow rate, liquid density, inlet and outlet temperatures, specific heat, and a correction factor. The algorithm is suitable for modeling cooling losses in industrial furnaces, ovens, and similar systems, for liquids other than water.

The calculation follows a top-down approach:

1. Total Heat Loss - Calculate heat removed by liquid based on flow rate, density, specific heat, and temperature rise

Note

If the cooling liquid is water, use the Water Cooling Heat Loss Calculator instead for more accurate water property calculations.

Total Liquid Cooling Heat Loss

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Total heat loss due to liquid cooling.

The heat loss is calculated by multiplying the liquid flow rate, density, specific heat, temperature rise, and correction factor. The factor of 60 converts from gallons per minute to gallons per hour.

\begin{equation}\label{eq:liquid-cooling-heat-loss} Q_\text{cool} = FR \cdot 60 \cdot \rho_{l,lb/ft^3} \cdot SH \cdot \Delta T \cdot CF\end{equation}

Symbols

\(Q_\text{cool}\)	Liquid cooling heat loss \([\unit{ \btu\per\hour}]\)
\(FR\)	Liquid flow rate \([\unit{ \gallon\per\minute}]\)
\(60\)	Minutes per hour (GPM to GPH conversion) - see physics::conversions::kMinutesPerHour \([\unit{ \unitless}]\)
\(\rho_{l,lb/ft^3}\)	Liquid density \([\unit{ \pound\per\cubicFoot}]\)
\(SH\)	Specific heat of liquid \([\unit{ \btu\per\pound\degreeFahrenheit}]\)
\(\Delta T\)	Temperature rise (outlet - inlet) \([\unit{ \degreeFahrenheit}]\)
\(CF\)	Correction factor \([\unit{ \unitless}]\)

Note

For heat losses due to gas cooling see Gas Cooling Heat Loss Calculator.

See also

Perry's Chemical Engineers' Handbook; NIST Engineering Statistics

physics::conversions::kMinutesPerHour for time conversion

Modules
	Liquid Cooling Heat Loss Formula
	Total heat loss due to liquid cooling.

Files
file	liquid_cooling_heat_loss.h

Namespaces
namespace	liquid_cooling_heat_loss
	Calculates heat loss due to liquid cooling in process heating equipment.

Functions
double	liquid_cooling_heat_loss::totalHeatLoss (double flow_rate, double density, double initial_temperature, double outlet_temperature, double specific_heat, double correction_factor)
	Calculates the total heat loss due to liquid cooling in process heating equipment.

Function Documentation

totalHeatLoss()

double liquid_cooling_heat_loss::totalHeatLoss	(	double	flow_rate,
		double	density,
		double	initial_temperature,
		double	outlet_temperature,
		double	specific_heat,
		double	correction_factor
	)

This function computes the heat loss removed by a cooling liquid, based on flow rate, liquid density, initial temperature, outlet temperature, specific heat, and a correction factor. The calculation assumes no phase change and uses sensible heat only.

Parameters

[in]	flow_rate	Cooling liquid flow rate \([\unit{\gallon\per\minute}]\)
[in]	density	Liquid density \([\unit{\pound\per\cubic\foot}]\)
[in]	initial_temperature	Initial/inlet liquid temperature \([\unit{\degreeFahrenheit}]\)
[in]	outlet_temperature	Outlet liquid temperature \([\unit{\degreeFahrenheit}]\)
[in]	specific_heat	Specific heat of liquid \([\unit{\btu\per\pound\per\degreeFahrenheit}]\)
[in]	correction_factor	Correction factor \([\unit{\unitless}]\)

Returns

Total heat loss \([\unit{\btu\per\hour}]\)

See also

• Liquid Cooling Heat Loss Formula