Question

Convert: a. Thermal conductivity value of 0.3 Btu/(h ft oF) to W/(m oC).

b. Surface heat transfer coefficient value of 105 Btu/(h ft^2 oF) to W/(m^2 oC)

Answer 1

Thermal conductivity value = 0.3 Btu/(h ft oF)

1 Btu/(h ft oF) = 1.7296 W/(m oK)

0.3 Btu/(h ft oF) = 0.3 x 1.7296 W/(m oK)

                          = 0.5189 W/(m oK)

                          = 0.5189 x 0.01 W/(cm oC)

                          = 0.5189 x 10^-3 W/(cm oC)

                           = 0.5189W/(m oC)

0.3 Btu/(h ft oF)   = 0.5189W/(m oC)

b)

105 Btu/(h ft^2 oF) to W/(m^2 oC)

1 Btu/(h ft^2 oF) = 5.67447 W/(m^2 oC)

105 Btu/(h ft^2 oF) = 105 x 5.67447 W/(m^2 oC)

                                = 595.819 W/(m^2 oC)