Q2. How have the thermal gradients been found in the sample?
High thermal gradients in the 597 sample have been found experimentally and through detailed modelling [27], in direct 598 contradiction with the use of the lumped parameter model.
Q3. How many variables can affect the convective heat transfer coefficient?
As a result of these boundary layer and velocity 590 variations, the convective heat transfer coefficient can vary by up to a factor of three 591 between the top and bottom of the tube.
Q4. How many DSC samples can be run at a time?
In addition DSC can be very expensive and running one sample 59 at a time, using a proposed scan rate of 0.5 K.min-1 for PCMs [19], can become 60 extremely time consuming.
Q5. What are the main reasons for the proliferation of alternative methods?
65Unfortunately the simplicity of the measurement and the lack of a standardized 66 methodology have led to a proliferation of alternatives and adaptations [21-27], both 67 in terms of the setup used and the manner in which the data is employed to obtain the 68 final property values [28].
Q6. What is the logical assumption to make in order to compute equation (19)?
Practically however, in order to compute equation (19) an 287 assumption must be made whether to calculate the two temperature gradients in the 288 equation at the same point in time or when the temperatures are equal.
Q7. How many DSC samples are required to obtain representative results?
the small size of 57 DSC samples, typically 10-50 mg, makes obtaining representative results for 58 composites difficult.
Q8. How many W.m-2.K-1 is the convective heat transfer coefficient?
For this case the convective heat transfer coefficient is assumed to be 15 575 W.m-2.K-1 in accordance with the average, measured natural convection values.
Q9. How can the T-history method be used to determine the heat loss of a sample?
In conjunction their 77 validity will be assessed based on a key assumption of the T-history method: the 78 suitability of the natural convection heat transfer coefficient of the reference material 79 to accurately represent the heat loss experienced by the sample.