Thermal response testing instrument for quickly responding heat transfer performance of buried heat exchangers

Abstract

The invention relates to a thermal response testing instrument for quickly responding the heat transfer performance of buried heat exchangers, which comprises a host computer (10); the host computer (10) is connected with a controller element (20); the controller element (20) is respectively connected with a pressure difference transducer (30), a temperature transducer (40) and a flow transducer (50) through interfaces; the pressure difference transducer (30), the temperature transducer (40) and the flow transducer (50) are connected to a pipeline of a system; and one end of a water circulating pump (60) is connected with a variable power thermal accumulation barrel (70) or a variable power ice accumulation barrel (80), and the other end of the water circulating pump (60) is connected with a buried heat exchanger to be detected. The thermal response testing instrument achieves the summer or winter operational effect of a practical ground source heat pump system.

Description

technical field [0001] The invention relates to a thermal response testing instrument, in particular to the mechanical structure of the thermal response testing instrument. Background technique [0002] The thermal response test instrument is a kind of equipment for testing and investigating the heat transfer performance of the buried heat exchanger to be installed or installed, to obtain the basic data of the soil heat transfer performance, and to provide scientific basis for the design of the buried heat exchanger in accordance with. Design a reasonable buried heat exchanger or solar heat collection system, develop renewable energy (geothermal energy or solar energy), and promote the development and application of renewable energy in my country to save building energy consumption and ease my country's energy pressure. [0003] The thermal response test instrument for rapid response to the heat transfer performance of buried heat exchangers can accurately test the heat tra...

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Problems solved by technology

[0007] (1) With only the heating function, it can only detect the parameters of the buried heat exchanger in summer, but the operating parameters in winter cannot be detected;

[0008] (2) The power of the heater is gradually increased in stages, it cannot be adjusted linearly, and it cannot truly reflect the heat transfer capacity of the buried heat exchanger;

[0009] (3) The installation of the electric heater in the water tank has potential safety hazards, and the temperature distribution of the circulating water in the water tank is uneven;

[0010] (4) The detection data points are limited, and the temperature distribution on the vertical height of the U-shaped tube wall of the buried heat exchanger cannot be detected, which cannot meet the design parameters of the real buried heat exchanger

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