SIMPLIFIED METHOD FOR UNDERGROUND HEAT TRANSFER CALCULATION

摘要

A simplified heat transfer calculation method forrnunderground buildings is developed. The method isrnbased on the results from the ITPE method and isrnsuitable for seasonal heat loss calculation. Thernsimplified method consists of a set of equations forrnestimating the monthly total heat flow between anrnunderground building and ground as a function of arnwide range of variables such as building dimensions,rninsulation configurations, and soil thermal properties.rnThe equations are designed to accept continuouslyrnvariable input values. The simplified methodrnpredictions are tested against the ITPE results. Thernagreement between the correlations and the ITPErnmethod is found to be within 10 percent for annualrnmeans, amplitude, and phase angle of total buildingrnheat loss.