Experimental Study on the Radiant Cooling Load of Floor Based on the Radiant Time Series Method

摘要

A calculation method about the radiant cooling load of floor which is based on radiant time series (RTS) method is presented: With the use of radiant time factors, radiant cooling load can be easily calculated from the radiant heat gain. Based on experimental data of total heat gain and total cooling loads collected within 24-hours, radiant heat gain of floor can be calculated through convection and radiation separating method, using PRF/RTF Generator software to calculate the radiant time factor of floor;; the radiant cooling load of floor is calculated and compared with the measured values. The results for the 5 experimental conditions show that the radiant cooling load of floor peak error is less than 2.3% comparing with the value which is calculated by radiant time series method, and average error is not more than 3.2%. Its mean absolute error is 1.2% and 1.7% respectively. The experimental study indicated that convection and radiation separating method on wall could calculate the radiant cooling load of floor.