Hello please can you help with the following questions.

(a) List the three modes of heat transfer which influence the heat loss of a double or triple-glazed window.

(b) Explain how a filling of argon gas rather than air improves the thermal performance of a double or triple-glazed window.

(c) Explain briefly what is meant by the term degree-days and what they are used for.

(d) A new low energy detached house is being constructed.

Table 2, below, gives the U-values and the areas of the building fabric elements.

Table 2 Element Area / m 2 U-Value / Wm*K Double glazed windows and 60 1.50 external doors Floor 90 0.20 Roof 90 0.14 External walls 140 0.16