Radiant cooling technologies are emerging in the European market. The dynamic building thermal analysis program ACCURACY has therefore been enhanced so as to calculate cooling loads and analyse annual energy consumption for rooms with cooled-ceiling climate systems. The program addresses the radiant effects of the ceiling panels on thermal comfort and cooling load dynamics. The program was validated against the measured dynamic response of a test room to step heating and step cooling. The underlying principles of the program are given. It is used to calculate the cooling load for an office room. This demonstrates the applicability and significance of the new method.
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