What is the solar jacuzzi?
The solar hot tub looks like a typical hot tub, but uses the sun's strength to maintain the desired water temperatures. The circulation pump extracts water from the bathtub and diverts the flow through specially designed solar thermal collectors. The panels make heat from the sun's rays and carry free energy to the water. After warming up the water returns to the spa. Pumps of solar hot bathtubs circulate water using conventional electricity or electric solar panels.
The hot tub heaters have either a flat plate or an evacuated tube construction. The thermal panels of the flat plate consist of a metal box and a glass upper part. Inside the box lies black tubing, not larger than about 0.4 inches (1 cm) in diameter, which performs sun rays and transfers heat to water. The evacuated tube panels contain a vacuum tube on a vacuum pipe in one or two other glass tubes. The outer tube contains a glycol that maintains and transmits heat to the water tube.
EvasThe ligament structures of the tubes are also contained in the frameable construction. The extra insulation value gives the system higher efficiency, because less heat escapes back to the environment. Home owners usually install hot tub heaters to the south of the house that is closest to the equator, where they get the most sunlight. The panels can be mounted, for example on the roof, angular shelves or fence, or can be placed on the ground.
manufacturers construct thermal water panels designed for heating hot bathtubs powered by sun in many sizes. The typical 80 -square -foot panel (7.43 square meters) provides up to 80,000 British thermal units (BTU) heating. One panel heats up 7,500 gallon (28,390 liter) solar jacuum. During the top sun hours, the solar thermal panel increases water temperature by up to 10 degrees Fahrenheit (12 degrees Celsius).
most effectiveThe solar whirlpool heating method includes a thermosyphonic system. Gravity, guide and convection circulate water through a thermal panel that heats and returns water to the spa without required mechanical pumps. Some systems use solar photovoltaic panels to supply electricity for direct current (DC) or alternating current (AC) pumps. One 68-watt solar panel generates enough energy to control the 12-volt DC pump. AC pump with one horsepower requires about 115 volts of electricity.
Although the DC pumps circulate only 3-5 gallons (11.35-18.9 liters) of water per minute, the water remains in the thermal panel longer, thus gaining a higher temperature. On the other hand, a solar hot tub equipped with AC pump moves with water at 60 gallons (2,271 liters) per minute. The water passes through the thermal panel faster, but increases the temperature by a slight fraction and must be constantly circulated.