Energy-saving and environment-friendly evaluation method for multi-energy complementary heating system

Abstract

The invention discloses an energy-saving and environment-friendly evaluation method for a multi-energy complementary heating system. The energy-saving and environment-friendly evaluation method comprises the following steps of (1) determining a temperature and a flow test point according to each heater combination mode and the operation mode to form a test scheme; (2) testing parameters in real time; (3) calculating the energy benefit of the system, and establishing a system energy benefit model; and (4) calculating the environmental benefit of the system, and establishing a system environmentbenefit model. According to the evaluation method, based on the multi-energy complementary heating system with a gas heating water heater and / or an air source heat pump and / or a solar water heating device as a heater, an energy-saving and environment-friendly performance evaluation index of the system is provided, and the calculation model is defined, so that the energy-saving and environment-friendly performance evaluation of any combination of the multi-energy complementary heating system is realized.

Description

technical field [0001] The invention belongs to urban heating systems, in particular to an energy-saving and environmental protection evaluation method for multi-energy complementary heating systems. Background technique [0002] With the acceleration of my country's urbanization process, the demand for heating and heating has grown rapidly. One of the very important trends is "from single energy to multi-energy complementary heating". While meeting the demand, energy conservation and environmental protection have become a measure of system energy consumption and environmental protection. The important factor of the effect, it is very important to evaluate it. [0003] In 2010, Liu Yin conducted an in-depth study on the thermal performance of the solar-air composite heat source heat pump system. According to the advantages and disadvantages of single air source heat pump, single solar heat pump and multi-heat exchanger switching solar-air dual heat source heat pump, he propos...

AI Technical Summary

Problems solved by technology

In 2017, Li Yonggang and others introduced the process and control strategy of the combined heating system of solar collectors, air source heat pumps and gas wall-hung boilers. In order to evaluate the performance of the system and each unit under different operating conditions, the system was tested. Proposed 8 test conditions and energy efficiency indicators. For the whole system, only the comprehensive evaluation index of system energy efficiency ratio was proposed, and the quantitative analysis of energy saving, environmental protection and emission reduction was not carried out in depth.

For the dual heat source system, the applied product standards mainly include: "Test Method for Thermal Performance of Domestic Solar Water Heating System with Auxiliary Energy" (GB / T 25967-2010), "Technical Conditions for Domestic Air Source Heat Pump Auxiliary Solar Water Heating System" (GB / T 23889-2009) and "Technical Regulations for Gas Heat Pump Air Conditioning System Engineering" (CJJ / T 216-2014); and the existing standards have insufficient research on the integrated evaluation indicators, which are mostly simple summations of individual heat sources and cannot There is no perfect comprehensive evaluation index and model for the mutual performance influence of the combination of real reaction heat sources

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