Changes

== Getting the Size Right ==

Like heating and air conditioning, you will find no easy answers when trying to calculate refrigeration requirements. Theory and practice based on experience are often apart. As a result, everyone tends to over estimate, which of course increases the energy needed. Conversely, under estimating leads to inadequate performance and frustration. Approaches differ. Some experts use guidelines, and then add a fudge factor; others use heat transfer calculations, and then add a fudge factor. Sigh, maybe we should just use fudge factors.