Abstract

Three combinations of cloths were evaluated for the protective effects of different kinds of clothings in cold environments. Table 1 shows tile components of tile three models of clothings. A prototype was made by putting a sheet of vinyl at the middle layer of raw cotton in a fabric-quilt cloths. A glove mannequin was covered by each of these cloths. The globes contained 1,000 cc of hot water about 40 degrees C. Tele-thermisters were fixed in order to check the temperature of cloths space and water temperature for evaluation of caloric-loss and climate of clothings. Results are summarized as follows : 1) Without wind, there is no significant difference of air temperatures between ski-parka and quilt wear clothing. 2) The prototype with vinyl sheet best protects against wind, the next is the ski-parka. Quilt-wear protects the least. 3) It is well-known that a working-clothing needs not have any separate liners nor outers. 4) For innermost layer of a clothing preventing cold, a cotton-fabrics is recommended and a water-proof cloths for outer layer. 5) Heat-loss was calculated from the cooling degrees of water. Calorie-loss was 910ca1/m2/hr. when bared, but with the prototype of vinyl sheets the calorie-loss was 350cal/m2/hr. (38.5% of bared). Quilt-wear and ski-parka were 380(41.8%) and 440 cal/m2/hr. (48.4%) respectively.