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Panel Radiator
Design Manual
Panel Radiator Design Manual | 12.2009
Technical specifications are subject to change without prior notice
Example:
Compute the output of a Model 21 20” x 59”
radiator with an average water temperature of 140°F
(60°C) in the radiator and a room temperature of 70°F
(21°C).
Solution:
Listed output = 7,000 Btu/hr (See Table 9)
∆T = 140 - 70 = 70°F: Conversion Factor = 0.569 (See
Table 9) Adjusted output = 0.569 x 7,000 = 3,983 Btu/hr.
Comment: The effect of the ambient room temperature is
already accounted for in the conversion factors listed in
Table 9. Figure 10 contains the performance curves for
Model 22 radiators showing the output per linear foot of
radiation for the different heights as a function of supply
temperature.
Different curves are shown based on a 18°F (10°C) and
36°F (20°C) temperature drop through the radiator and a
68°F (20°C) room temperature.
Example:
A room requires 12,000 Btu/hr with 6 ft of
available space. Maximum supply temperature is 170°F
(77°C). What model(s) can be used for this application?
Solution:
Required heat output per foot = 12,000/6 =
2,000 Btu/hr per linear foot. Check Figure 10 at 170°F
(77°C) supply temperature and 2,000 Btu/hr Output:
Model 22:
Use 24” high with about 18°F (10°C) ∆T drop.
