A solar accumulator is a reservoir that separates the energy supply from the energy capture. That is, because we will not always need energy at the moment of solar radiation, the compiler is entrusted to store this energy to supply it when needed.
When the system needs, for example, domestic hot water the accumulator supplies this hot water and replaces it with cold water that comes from the network. The cold water will pass through the circuit of solar collectors exposed to solar radiation and increase its heat energy. The hot water returns to the accumulator for when it is needed.
The solar accumulator, which is made up of a metal tank made of synthetic material and insulated, incorporates one or two heat exchangers to its installation, maximizing its safety to avoid the risk of leakage and loss of energy.
The accumulator is in vertical position. In this way, temperature stratification is executed more easily and effectively, so it is not necessary that the entire tank is at the set temperature. With this vertical position of the accumulator a greater efficiency of the solar collectors is obtained, and the thermal losses due to the thermodynamics of the elements are avoided again.
Types of solar compulators
The size of the installation is the most important element to choose one type of accumulator or another.
For small or medium-sized structures, it is usual for the tank itself to also contain drinking water. On the other hand, in installations of large and complex dimensions, it is essential that other intermediate inertial deposits are gradually established, in order to store in them the thermal energy that will later be transferred to the solar accumulator.
In addition, depending on whether the heat exchangers are outside or located inside the condenser, we can obtain other variants. If the tank does not have the built-in exchanger, the water is heated outside, while if it is included inside, both the water accumulation and its subsequent temperature rise are produced inside the same tank.
Accumulators for photovoltaic solar energy
It consists of several batteries connected together in series or in parallel.
Last review: February 21, 2018Back