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

Abstract

An energy-saving and environment-friendly evaluation method for a multi-energy complementary heat supply system comprises the following steps that (1) determining temperature and flow test points according to the combination mode and the operation mode of heaters, and forming a test scheme; (2) testing parameters in real time; (3) calculating system energy benefits, and establishing a system energy benefit model; and (4) calculating system environmental benefits, and establishing a system environmental benefit model. Based on a multi-energy complementary heat supply system taking a gas heatingwater heater and / or an air source heat pump and / or a solar water heating device as heaters, system energy-saving and environment-friendly performance evaluation indexes are provided, a calculation model is defined, and energy-saving and environment-friendly performance evaluation of the multi-energy complementary heat supply system of any combination is achieved.

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 / T25967-2010), "Technical Conditions for Domestic Air Source Heat Pump Auxiliary Solar Water Heating System" ( GB / T23889-2009) 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, most of which are simple summations of individual heat sources, which cannot truly reflect There is no perfect comprehensive evaluation index and model for the mutual performance influence of heat sources after combination

Images