Abstract
Providing optimal operating conditions is one of the major challenges for effective heating or cooling systems. Moreover, proper adjustment of the heat transfer fluid is also important from the viewpoint of the correct operation, maintenance, and cost efficiency of these systems. Therefore, in this paper, a detailed review of recent work on the subject of conventional and novel heat transfer fluid applications is presented. Particular attention is paid to the novel nanoparticle-based materials used as heat transfer fluids. In-depth comparison of environmental, technical, and economic characteristics is discussed. Thermophysical properties including thermal conductivity, specific heat, density, viscosity, and Prandtl number are compared. Furthermore, the possible benefits and limitations of various transfer fluids in the fields of application are taken into account.
Highlights
Providing optimal operating conditions is one of the major challenges for effective heating or cooling systems
Samylingam et al [158] showed that MXene/silicon oil NFs reached an increase in thermal efficiency of about 16%, a flow rate of 0.07 kg/s, and a growth of heat transfer coefficient (HTC) of about 9% compared to the Al2O3-water heat transfer fluid
State-of-the-art analysis led to the conclusion that conventional fluids are being displaced by novel materials, mainly nanofluids
Summary
Providing optimal operating conditions is one of the major challenges for effective heating or cooling systems. The possibility of using a given HTF in a specific heat transfer system is determined by its thermal properties, i.e., those that are taken into account in the calculations of heat transfer systems. These are density, kinematic, and dynamic viscosity in the operating temperature range, specific heat, thermal conductivity, and Prandtl number [2]. A priority trend in heat exchange technology is the search for compounds and the creation of fluid compositions that have the desired combination of key physicochemical properties to solve unconventional problems Economic features such as the availability and low cost of HTFs should be taken into account.
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