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Selection of equipment for an autonomous solar power plant

Selection of equipment for an autonomous solar power plant

Solar collectors are devices , which, with the help of a special “absorber” coating, collect thermal energy from sunlight and heat a non-freezing liquid - a coolant, which through a heat exchanger transfers thermal energy from the collector to the water in a boiler or in the bowl of a closed or open type swimming pool. In the practice of implementing systems with a solar collector, the following algorithm is very often used: solar system designed to heat swimming pool water. During the heating season, all thermal energy received from the sun is transferred to the heating system. In this way, the maximum efficiency of using the solar system is achieved. Such systems allow you to save up to 90% per year on heating the pool, up to 30% on the heating system, and up to 80% on hot water supply.

Advantages of heating pool water with a collector

Fast payback
Low operating costs
Possibility of heating water in the pool without using main heat sources
Easy installation of equipment
Do not require serious maintenance

Types of solar collectors

Depending on the period of use, solar solar systems are divided into two types: seasonal and year-round. Seasonal collectors have a simple design and are used only in the warm season, since the collector contains ordinary water, which freezes at sub-zero temperatures . All-season solar collector is ideal for year-round hot water supply, heating pool water or supporting a heating system. Such a system provides additional equipment: pump group, expansion tank, boiler, controller. Consequently, the cost of this system is higher.

Types of solar collectors

There are two types of solar collectors: flat and vacuum. The composition of flat solar collectors includes a housing, an absorber, a copper heat exchanger and thermal insulation. The design features of such devices make it possible to prevent overheating of the system by discharging excess heat at night. Conversion of sunlight into thermal energy in vacuum solar collectors</b > occurs thanks to vacuum tubes coated with a special coating. Vacuum is an ideal heat insulator, thanks to which heat losses are minimized, even in frosty weather.

The principle of operation of the solar system

Sunlight hits the collector, a special “absorber” coating absorbs and heats the non-freezing liquid - the coolant. Next, the coolant is pumped by a circulation pump through a pipeline made of stainless steel or copper. In this way, thermal energy is transferred from the collector to the consumer: the heating system, hot water supply or water pool.

The operating principle of solar collectors

It consists of the following: using a filtration pump, water from the pool is pumped through a collector, where it is directly heated. For the operation of suchsolar systems, a circulation pump, antifreeze liquid and a stainless steel or copper pipeline are not required. Such systems are designed for seasonal operation (April-October), are not intended for heating hot water supply and, in addition, such collectors are quite rare on the market.</span >

Solar system for heating a swimming pool

Solar system for heating a swimming pool any volume and hot water supply consists of: a vacuum or flat solar collector, a pumping station , expansion tank, hot water boiler, shut-off valves and pipeline. To select the correct solar collector for a pool, it is important to take into account the location of the pool, the frequency of its visits, as well as the required temperature. In order to ensure that the specified water temperature in the pool is maintained, it is necessary to correctly calculate the power of the solar system. Initial heating at the beginning of the season may require more energy than the solar system produces. However, it is inappropriate to calculate its power taking into account the primary heating.

Heat losses from the mirror of outdoor pools

Preliminary selection of a solar collector for a swimming pool can be made based on the summary table:

Pool protection level	Water temperature
Pool protection level	20℃	24℃	28℃
Coated	100W/m2	150W/m2	200W/m2
Uncoated, windproof	200W/m2	400W/m2	600W/m2
Uncoated, partially windproof	300W/m2	500W/m2	700W/m2
Uncoated, not protected (strong winds)	450W/m2	800W/m2	1000W/m2

Advantages of cooperation with Reneco

Buying in Ukraine a solar collector for heating water in the pool is not a problem nowadays.</span > To correctly select, accurately calculate and order the installation of such systems, just contact Reneco.

Advantages of using solar collectors

Efficiency
Environmentally friendly
Fire safety
Durability