A two-port envelope model for building heat transfer

摘要: Abstract A zone envelope thermal model is derived from first principles, based on the exact two-port solution to heat conduction equation. single set of matrices, one for each frequency interest, used describe behaviour total envelope. The matrices must be computed once a particular and cooling loads various conditions, or passive response, can then obtained. method same principles underlying CTF method. However, transfer function calculated whole by combining individual walls, after simplification room interior network. coefficients walls forming are not required. Except radiation, completely easy implement. It also numerically efficient. For load prediction, an implementation in domain, prime factor FFT algorithm convenient. time domain simulation with active control, easily obtained transforming Z-domain. This represents modern problem, which convenient implement object oriented computer programming languages.