Energy Effiency Evaluation Method Of Solar Water Heating System

The issue of energy and environment is closely related to the increase of country’s strength and people’s health level, the development of economic makes a big difference to energy. To adjust the energy structure of our country with the rapid development, the strategic stage should be promoted as soon as possible, one hand, it is necessary to improve energy utilization rate with the new technology, on the other hand to promote renewable energy, and increase the application of new clean energy.To encourage the development of solar energy in life, the organization entrust project tracking evaluation for relevant units which are installed solar water heating system. There are some reasons that the tracking measurements are short-term, this system efficiency evaluation has the characteristics of time-consuming, uncontrolled weather conditions, the number of projects and limited qualification assessment institutions, long-term monitoring can get more accurate results, but usually the actual measurement only test the short-term in the engineering that leads to the universality lack of data, rigorous of evaluation method is particularly important.In this paper, the research content are as follows:First of all, the literature can tell us that understand the solar system and the research status of energy efficiency assessment; analyze the solar water heating system help us to complete the classification of the hot water system; establish the mathematical model of heating system combined with the existing evaluation methods. Then, on the basis of the guidelines for the renewable energy construction application demonstration project evaluation, establish the method of system thermal performance testing and energy efficiency evaluation.And also point out the need to test parameters and calculation methods. To establish the simulation model of solar water heating system based by the principle of conservation of energy.The solar water heating system simulation results are analyzed, the result is that the solar radiation with linear positive correlation is related to the heat of solar system and the collection efficiency is stable. Analyze the questions of the existing evaluation methods combined with simulation results to summarize solutions.The evaluation result can provide a reference for solar water heating system and other related projects about energy efficiency evaluation in the future.