Multifunctional wide flow single-phase convective heat exchange test device

Abstract

The invention discloses a multifunctional wide flow single-phase convective heat exchange test device. The device comprises the following four parts: a circulating water system, an electric heating system, a measurement system and an experimental section. The circulating water system consists of two parts, namely a hot water circulating system and a cold water circulating system; the electric heating system mainly consists of an electric heater and a corresponding control system; the measurement system comprises a temperature measurement system, a flow measurement system, a pressure difference measurement system and a corresponding data acquisition system; and the experimental section is formed by connecting a tubular heat exchanger and a tube bundle heat exchanger in parallel. The device has a simple structure, and is flexile and convenient to operate; the adopted equipment is small in volume, small in number and high in measurement precision; and single-phase convective heat exchange and flow resistance test of a heat transfer pipe and the tube bundle heat exchanger are integrated, and the heat transfer properties and flow resistance properties of the heat transfer pipes of different shapes and different geometric dimensions and the heat exchangers of different pipe arrangement modes can be tested and researched within wide reynolds number ranges of a laminar area, a transition area and a turbulence area.

Description

technical field [0001] The invention relates to a single convection heat transfer test device, in particular to a multifunctional wide flow single convection heat transfer test device, which belongs to the technical field of heat transfer and enhanced heat transfer. Background technique [0002] With the deepening of the world's energy crisis, the efficient utilization and transformation of energy has become an important issue facing the sustainable development of society. With the introduction of the concept of "energy saving", people's requirements for the compactness, high efficiency and low cost of heat exchange equipment are getting higher and higher. In recent years, people have researched and developed many enhanced heat exchange tubes, such as threaded grooved tubes, corrugated tubes, flat tubes, and micro-finned tubes. How do these enhanced heat exchange tubes perform? Do heat exchangers made with these reinforced tubes have a higher heat transfer capacity than ex...

AI Technical Summary

Problems solved by technology

The relevant test systems currently on the market can only be used for teaching and demonstration, and cannot meet the requirements of scientific research tests

From the published patent designs, there are few test devices for heat transfer and resistance performance research of heat exchangers with water as the medium, and the research objects are single (only for "plate-fin heat exchangers", patent application No.: 200810093929.8)

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