Building temp. control method and system - predicts heat energy to be transferred between temp. control fluid and building load during predetermined time interval

摘要

Method of controlling the temperature in a building having a building heat transfer load, comprises (a) passing a temperature control fluid through the building to transfer heat energy between the fluid and the building load; (b) predicting the amount of heat energy required to be transferred between the fluid and the building load over a predetermined interval; (c)measuring the amount of heat energy in the fluid and determining the existing available energy to be transferred between the fluid and the building load; (d) varying the heat energy in the fluid during the predetermined interval at a point remote from the building load if the existing available energy to be transferred is less than the energy required to be transferred. Variation is done at a rate such that the total available energy to be transferred, as varied over the predetermined interval, is at least equal to the energy required to be transferred. The flow of the fluid is controlled so that the existing available energy to be transferred is dissipated at a rate proportional to the difference between the rate of transfer of energy between the fluid and the building load, and the rate of variation.