What are the advantages of solar water heaters? How to choose a solar water heater

Solar water heaters are not affected by building forms, and the components can be easily assembled and maintained. They are also very energy-saving and environmentally friendly. Especially in larger places, connecting and combining large solar heating systems is more stable, and the stability of the entire system will be greatly improved. Next, let's learn about other advantages of solar energy.

Contents of this article

1. What are the advantages of solar water heaters?

2. How to choose a solar water heater

3. How to choose the capacity of solar water heater

What are the advantages of solar water heaters?

1. In terms of appearance, it is in line with the appearance characteristics of the building, is not affected by the architectural form, and each component can be easily assembled and maintained.

2. Flat-plate solar water heaters have high thermal efficiency. The entire surface of the flat-plate solar water heater is exposed to the sun and can receive direct sunlight to the maximum extent.

3. The key component of the flat-plate solar water heater, the heat-absorbing plate, is made of metal, which can better withstand the pressure of water during transportation and installation, as well as during use.

4. In larger places, it is more stable to connect and combine large solar heating systems, and the stability of the entire system will be greatly improved.

How to choose a solar water heater

1. Check the quality of the vacuum tube. The vacuum tube is a key component of the water heater. When purchasing, you need to carefully observe the coating on the glass tube inside the vacuum tube. Its color is generally black, dark blue or dark gray. A good quality coating has uniform color, no scratches, no peeling or shedding on the film, no stones on the glass, and the support is placed properly and not loose.

2. Check the insulation layer and the inner tank. There is a layer of insulation material between the outer shell and the inner tank of the solar water heater, which plays a very critical role in the insulation of hot water. The service life of polyurethane insulation material can reach more than 10 years. The inner tank is where hot water is stored, and the thickness is about 0.5 mm.

3. Look at the solar water heater bracket. Design the bracket to support the collector and the insulation water tank. It is required to have a strong structure, high stability, wind and snow resistance, aging resistance, and no rust. The material is generally stainless steel, aluminum alloy or steel spraying.

4. Choose the capacity based on the number of people in the family. Choose the water tank capacity. Generally, the water consumption of a family for bathing is low: if the family water consumption includes the kitchen, the total water consumption can be estimated based on 40L per capita; the water temperature of a family solar water heater in winter is generally calculated at 50-60 degrees, and the water capacity of the water heater is converted. The actual purchase should also be determined based on the situation of the water heater.

How to choose the capacity of solar water heater

1. The capacity of an electric water heater is generally determined based on the number of family members, the size of the living area, and the meter circuit.

2. Closed electric water heaters generally have automatic temperature control devices. After turning on the water heater, the water temperature will not be lower than the specified temperature. The water heater has a large capacity and a long heat preservation time. It can be used by multiple people for continuous bathing. The water temperature is stable when using water. Water heaters below 15L are generally used for washing dishes and vegetables in the kitchen or washing faces and brushing teeth in the bathroom.

3. The water heater for bathing should have a capacity of more than 40L. For one person, a water heater with a capacity of 40-50L is suitable. For two people, a water heater with a capacity of 50-60L is suitable. For a family of three, a water heater with a capacity of 80-100L is suitable. For a family of more than three people, a water heater with a capacity of 120-150L is suitable.