AIR CONDITIONING
Sinergy and Energy Saving
Clivet Sinergy is a modular system aimed at integrating solar energy with heating and air conditioning. This report from Clivet examines the pros and cons of combining photovoltaic panels with an energy storage system.
A
nyone who has installed a photovoltaic system on the roof of their home or business will be familiar with the
advantages. It provides independence from the power grid (or at least reduces dependence), especially in summer, producing clean energy and reducing electricity bills. However, while the system operates at full capacity during summer, the same cannot be said for the colder months. To benefi t from the sun’s free energy in winter, it’s advisable to combine your photovoltaic system with an energy storage system.
How do these energy storage systems work? Before explaining their operation, let’s delve
into the types of energy storage systems that can be used with photovoltaic systems. They are specialised batteries designed to optimise the system’s energy production and reduce electricity consumption. The primary function of these energy
storage systems, also known as accumulators, is to store excess energy for later use. A photovoltaic system consists of panels
that produce electricity in direct current and an inverter that transforms it into alternating current, enabling immediate use (direct self-consumption). Excess energy produced but not used is fed into the power grid. However, an energy storage system allows you to defer self-consumption, avoiding any energy waste and maximising the benefi ts of the entire production system. In general, a photovoltaic system with an
energy storage system operates according to these simple steps: ■ Morning: The produced energy is consumed on-site, with any surplus stored in the batteries.
■ Afternoon: The energy storage system reaches its maximum capacity, and excess energy is fed into the power grid.
■ Evening: With the absence of the sun, the system stops producing energy. The electricity
stored in the batteries can then be used.
■ Night: Once the stored electricity is depleted, electricity from the power grid is utilised.
Energy storage systems for businesses: yes or no? As previously discussed, the storage system is
suitable for a photovoltaic system in a home or apartment building, enabling the use of solar-generated electricity in the evening or at night. But is this system also a suitable solution for businesses? The answer is yes, as long as the company’s energy needs don’t align with the times when the photovoltaic system generates most of its energy. For instance, if a company requires energy on weekends or consumes a signifi cant amount during the evening or at night, installing an energy storage system would certainly be a great way to reduce its energy bills.
Heat pumps
By installing photovoltaic panels, clean, renewable energy can be generated to meet business needs. Combining this with an energy storage system further reduces dependence on the power grid by using the stored energy when the plant is inactive. So, why not use this stored energy to power a heat pump, providing a business with an excellent heating and air conditioning system, as well as a domestic hot water supply? Heat pumps require electricity, accounting for approximately 25% of their energy needs. However, the remaining 75% of the energy required to operate them comes from renewable sources such as outside air, groundwater, or underground heat. When combining the heat pump with a
photovoltaic system, you can power it with the free energy produced by the solar panels, avoiding the consumption of fossil fuels typically used by boilers and making the entire system even more environmentally friendly.
30 October 2023 •
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