Method for calculating equivalent design capacity of solar heating system

Abstract

The invention discloses a method for calculating equivalent design capacity of a solar heating system, and the method comprises the following steps of: step 1: inputting historical actually measured meteorological data and thermal parameters of a building, and using the EnergyPlus software to perform computer simulation to obtain the building heating load; step 2: calculating and obtaining the area and the auxiliary heat source capacity of a solar thermal collector; step 3: adjusting the auxiliary heat source capacity in the heating system by a dichotomy; step 4: evaluating the equivalent design capacity of the solar heating system; and step 5: calculating, converging and juding to obtain the equivalent design capacity of the final solar heating system. The method provided by the inventioncan calculate the equivalent design capacity actually provided by the solar heating system under the condition of considering weather uncertainty, and reduce the auxiliary heat source capacity according to the calculated equivalent design capacity under the premise of ensuring the energy demand of users, and improve the economic benefits of the system.

Description

technical field [0001] The invention relates to the field of solar simulation analysis, in particular to a method for calculating equivalent design capacity of a solar heating system. Background technique [0002] As the demand for renewable energy increases year by year, its share in global total energy consumption is expected to increase from 7.1% in 2015 to 13% in 2040. Renewable energy makes it possible to replace traditional energy. However, due to the uncertainty caused by real-time output changes, the capacity planning of some renewable energy faces challenges. Therefore, an accurate assessment of the value of resource capabilities is crucial for the long-term planning of the system. [0003] In the process of capacity planning and design of the solar heating system, the engineering design manual is generally used for calculation. For example, in GB50495-2009 "Technical Specifications for Solar Heating and Heating Engineering", the average solar radiation on the dayl...

AI Technical Summary

Problems solved by technology

If the system capacity after adding solar energy is not properly evaluated and the capacity that this part of solar energy can provide is ignored, the initial design of the actual energy supply system will be too large and the initial investment will increase.

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