Abstract

A radiative cooling system is built in Irbid-Jordan and utilized to cool and store fluids by direct radiation to the low effective sky temperature. The radiative cooling system is built to verify the validity of a mathematical model proposed to describe the system dynamic thermal behavior. The constructed radiative system has the ability to create a 15°C reduction in the mean temperature of a 120 l capacity storage tank using 0.6 m 2 radiative cooling panel over one night and under climate conditions that vary within the range of 28–55% for relative humidity and 16–27°C for ambient temperature, which are the average spring conditions of Irbid-Jordan (Latitude=32.5°N, Longitude=35.5°E). This implies that the system can emit 13 MJ/(m 2.night) to the sky. It is found that the theoretical and the experimental predictions of the proposed model are in a qualitative good agreement.

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