Info

(WNW)

* f v (S)

Practical Operation;

Number of units used in the past: Number of units currently in use:

one none

Periods of Operation;

The dryer was used only on an experimental basis from 1960 to 1964. Drying Data;

Quantities dried: 1 cubic meter of red oak planking per charge

Drying time: approximately 40 days to dry to 15 percent moisture content (oven'dry basis)

Operating Conditions:

The fan was operating during daylight hours only. The mean daily temperatures within the dryer were 5° to 12°C above outdoor temperatures (see table 1). During mid-afternoons, the temperature differences were considerably higher, sometimes as much as 27,5°C.

TABLE 1 - TEMPERATURES WITHIN THE SOLAR-HEATED PREDRYER AND OUTDOORS AND SOLAR RADIATION DURING THE DRYING OF 4/4 RED OAK

Average Temperatures

Drying Periods I

Weather

Recorded

.. Recorded

.Difference-]

Solar Radiation

0 0

Post a comment