The solar water heating system includes solar collector, circulation system, control system, auxiliary energy system, heat storage system, support frame and other parts. So far, the combination of solar water heating systems and residential building exteriors in China has roughly gone through four stages of development. 1. Rural housing alone installation China’s solar water heating
At present, building energy consumption has accounted for about 30% of social energy consumption, of which the energy consumption required for domestic hot water preparation accounts for a large part. The application of solar water heating system in residential buildings can be used to prepare domestic hot water and reduce the use of conventional energy,
Connection of collector Since solar heating generally requires a collector of tens of square meters, and each collector module generally only has a few square meters, each solar collector system must be installed as a solar collector array. Different arrangements have an impact on the flow rate and heat exchange of each collector, and have
Forced circulation solar hot water system The forced-circulation solar hot water system is to install a water pump on the pipeline between the collector and the storage tank as the circulating power of the water in the system; at the same time, the useful energy of the collector is collected by heating the water and
Natural circulation solar water heating system refers to a system that uses solar energy to make the heat transfer working medium in the system naturally circulate and heat between the collector and the storage tank or between the collector and the heat exchanger. The power of the system circulation is the thermosiphon effect caused by
The international standard ISO9459 proposes a scientific classification method for solar water heating systems, which is classified according to the 7 characteristics of solar water heating systems. Each feature can be divided into 2~3 types, thus forming a rigorous solar hot water system classification system, as shown in Table 1. 1. The first feature represents
The device that absorbs solar radiation and transfers the generated heat energy to the heat transfer medium is called a solar collector, which is a key component of various solar water heating systems. The solar collectors currently used in China can be roughly divided into two categories: flat-plate solar collectors and evacuated tube solar collectors.