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Coil
Calculations

LRC’s coil calculators are engineering tools designed to evaluate thermal performance, airflow, and physical characteristics for different coil applications.

CC Calculator

Condensing Coil

The CC (Condensing Coil) Calculator is used for refrigerant condensing applications where heat is rejected from the refrigerant to the surrounding air, most commonly in air-cooled condenser coils. It evaluates total and sensible heat transfer, leaving air temperatures, and condensing temperature while also accounting for airflow pressure drop, coil weight, and face area. This calculator is intended to support accurate condenser coil design, performance analysis, and validation under real operating conditions.

CW Calculator

Chilled Water Coil

The CW (Chilled Water) Calculator is designed for coils that cool air using chilled water supplied from a central chiller system. It analyzes key factors such as water flow rate, entering and leaving water temperatures, airside heat transfer, and pressure drop on both the air and water sides of the coil. This tool is commonly used for air handlers, fan coils, and hydronic cooling systems where precise control of cooling performance is required.

DX Calculator

Direct Expansion Coil

The DX (Direct Expansion) Calculator applies to evaporator coils where refrigerant expands directly within the coil to absorb heat from the air stream. It calculates total and sensible cooling capacity while evaluating refrigerant superheat, suction and liquid temperatures, and required airflow conditions. This calculator is typically used for air conditioning systems, refrigeration equipment, and heat pump evaporators.

HW Calculator

Hot Water Heating Coil

The HW (Hot Water) Calculator is intended for coils that heat air using hot water supplied by a boiler or heat exchanger. It evaluates water flow rates and temperature rise, resulting air temperature increase, heating capacity in BTU/hr, and coil pressure drop. This calculator supports both comfort heating and industrial air-heating applications where controlled heat delivery is essential.

SS Calculator

Steam Coil

The SS (Steam) Calculator is used for coils heated by steam, where thermal energy is transferred through the condensation of steam within the coil. It calculates heating capacity, steam consumption, leaving air temperatures, and air pressure drop. Steam coils are typically applied in industrial, institutional, and process-heating environments that demand high heat output and rapid response.

Standard Coils Calculator

Standard Coils

The Standard Coils Calculator allows users to select from LRC’s pre-engineered standard coil models rather than creating a fully custom configuration. It supports quick sizing and selection by referencing standard coil dimensions and validating expected performance. This tool streamlines the selection process for common applications where custom engineering is not required.

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LRC Coil Company is certified by NQA Global Assurance for Design, Manufacture, Inspection and Shipping of HVACR Equipment and is ISO 9001 Certified in the United States.

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