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- Experimental study on the density of graphene nanofluid: effects of concentration, temperaturePublication . Vilão, G.; Soares, F.; Ramos, C.A.; Iglesias, T.P.(Introduction) Thermal and physical properties of fluids are crucial factors in the design and development of heat transfer equipment that operates with high efficiency. These properties determine how effectively a fluid can transfer heat, how it behaves under different temperatures and pressures, and its overall performance in heat exchange processes. The density of fluids is an essential physical-chemical property that plays a vital role in mass and heat transfer. The experimental values of the density compared to the initial models existing in the literature present significant deviations, this difference increasing with the increase of the volume fraction. The most used model for calculating density is the mixture model of Pak and Cho [1], however, this equation is still an approximation. As the density of the nanofluid is affected by numerous factors, one of which is the shape and size of the nanoparticle, we will present the study considering this factor [2].