Whole-year performance detection method for ground source heat pump system

Abstract

The invention provides a whole-year performance detection method for a ground source heat pump system. The method comprises the following steps: step 1, calculating extreme values of cold and hot loads of a building and annual operation time distribution proportions of a system under different load rate intervals; step 2, calculating the real-time hourly load of the building according to the outdoor temperature at the current detection moment; step 3, calculating a system operation load rate according to the extreme value of the cold and hot load of the building and the real-time hourly load of the building, and updating the operation cumulative duration; step 4, calculating system operation energy efficiency ratios under different load rate intervals according to system inlet and outlet water temperatures, flows and equipment power consumption; step 5, judging whether the operation cumulative time length is greater than a preset time length or not, and if yes, executing the step 6; and step 6, outputting the average energy efficiency ratio of the system, and calculating the annual comprehensive energy efficiency ratio according to the annual operation time distribution ratio and the average energy efficiency ratio of the system under different load rate intervals. The system operation effect can be scientifically evaluated according to the annual operation performance parameters of the system.

Description

technical field [0001] The invention relates to the technical field of HVAC ground source heat pump systems, in particular to a method for detecting the annual performance of the ground source heat pump system. Background technique [0002] With the advancement of science and technology and economic development in the human world, energy has become the material basis for human survival and development. With the rapid development of economy and society and the continuous growth of population, the demand for energy is increasing, while the continuous exploitation and consumption of non-renewable energy such as fossil resources, and the reduction of reserves have made the contradiction between energy supply and demand increasingly prominent. Ground source heat pump system as A clean renewable energy source is widely used. [0003] According to the "Renewable Energy Building Application Demonstration Project Evaluation Guidelines" and "Renewable Energy Building Application Engi...

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Problems solved by technology

[0004] By comparing the performance detection methods of the existing ground source heat pump system, it is concluded that the existing detection methods mostly test and evaluate the single state point of the system operation, and cannot effectively evaluate the system's annual operation state

To make a comprehensive evaluation of the annual operating conditions of the ground source heat pump system, it is necessary to install an energy consumption monitoring system for the entire system, which often brings huge investment. Therefore, many projects that use ground source heat pump systems do not install energy consumption monitoring systems. Detection Systems

However, the ground source heat pump system cannot be evaluated reasonably and effectively, and users do not know how well the ground source heat pump system works, which restricts the popularization and application of the ground source heat pump system.

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