Product Overview:
The COIL – PMW165 is designed for heating dry interiors with a high heat output without the need for a fan. It is suitable for environments where construction height is not a limiting factor.

Specifications:

• Total Width: 420 mm
• Construction Height: 165 mm
• Length: 900 to 3000 mm

Usage Recommendations:
This coil is recommended for individual use in dry interiors that require higher heat output.

Temperature Equation:
The heat transfer rate (Q) is calculated using the formula:
Q = µ QN (tw - tA) / 50^m
Where:

• m = temperature exponent (1.3854)
• tW = mean heating water temperature
• tA = mean air temperature in the interior [ºC]
• QN = nominal heat transfer rate for a temperature difference of 50 ºC [W]
• µ = flow value coefficient (µ=1 for nominal flow values)

Heat Transfer Rate Data:
The document provides detailed tables showing the heat transfer rate (Q) for various lengths (900 mm to 3000 mm) and mean water temperatures (tW) at different mean air temperatures (tA). For example, at a length of 900 mm and a mean water temperature of 90ºC, the heat transfer rate is 823 W at a mean air temperature of 15ºC.

Key Observations:

• The heat transfer rate increases with the length of the coil and the mean water temperature.
• Higher mean air temperatures result in lower heat transfer rates for the same coil length and water temperature.