Graduation Year

2024

Document Type

Thesis

Degree

M.S.C.H.

Degree Name

MS in Chemical Engineering (M.S.C.H.)

Degree Granting Department

Chemical, Biological and Materials Engineering

Major Professor

D. Yogi Goswami, Ph.D.

Committee Member

Venkat Bhethanabotla, Ph.D.

Committee Member

John N. Kuhn, Ph.D.

Keywords

Energy Free Cooling, Passive Daytime Cooling, Radiative Cooling

Abstract

This thesis investigates passive daytime radiative cooling (PDRC), aiming to enhance cooling efficiency for building applications. The study addresses the pressing need for effective and cost-efficient cooling solutions to mitigate global warming and reduce energy consumption. The research begins with a detailed literature review, tracing the evolution of radiative cooling materials and identifying existing research gaps. Experimental investigations involved testing various coatings, including combinations of aluminium phosphate, sodium silicate, polyvinylidene fluoride (PVDF), and wollastonite. Among the tested configurations, an acrylic-based coating incorporating barium sulphate (BaSO4) and calcium carbonate (CaCO3) was found to maintain temperatures around ambient levels under intense solar irradiation.

These findings provide valuable insights into the performance of different PDRC materials and highlight the effectiveness of the acrylic-based coating in achieving cooling performance that overcame the absorbed solar radiation and maintained the surface temperature comparable to ambient temperatures. This work contributes to the ongoing development of PDRC technologies for practical, large-scale applications in building cooling.

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