What material is used for solar hot water pipes?

Solar water heaters.

There are also many options for installing water pipes, such as PPR water pipes, copper pipes, copper-plastic pipes (aluminum-plastic pipes), PVC pipes, iron pipes, and so on.

In fact, PPR water pipes are ideal for a variety of reasons. The reason is also very simple, first of all, a good PPR water pipe is very reliable in quality, which is completely comparable to copper pipe; There is also ** is more acceptable, much lower than copper pipes; It is also important to be healthy, without any rust and patina.

Note that the water pipe must be a 6 point. PPR water pipes are divided into cold water pipes and hot water pipes, the key is that the thickness of the pipe wall is different, it is recommended that everyone use hot water pipes to drain at home, the pipe wall is thicker, the quality is better, and the price is not much expensive.

Considering that the solar water supply and water pipes must be freeze-proof, that is to say, they cannot freeze and crack under normal circumstances, there are only three kinds of pipes on the market: real PEX cross-linked pipes, PERT pipes, and PB pipes.

At present, most of the market will use PEX as the upper and lower water pipes of solar energy, because it is frost-resistant, and it is relatively low, but in the past two years, many manufacturers have reduced their cross-linking degree in order to win the market, thereby reducing the cost, but at the same time, its frost resistance has also been greatly reduced, if used, it is recommended that you do not choose less than 140 yuan; Pert is frost resistant better than PEX, but the cost is relatively higher, so there are few solar energy on the market now; The PB pipe should be said to be the best antifreeze pipe on the market at present, and now many high-end floor heating projects are in use, of course, its cost is higher, and it cannot be promoted in the solar energy industry at present.

Therefore, it is recommended that you choose a good quality PEX cross-linked tube, provided that it is not cheap.

PPR can never be used as a solar water supply pipe, it can freeze and crack in a winter in the north (it can be used in the south), we have used the best, not the original.

Aluminum-plastic pipes are not good, Foshan Rifeng, Jinde have been used, the north and south of the Yellow River will be used for four or five years, and the northeast may be two or three years.

But indoors, for the sake of aesthetics, and the indoor temperature is also high, you can choose PPR or aluminum-plastic pipe.

There are two sections of solar water heating pipes, outdoor and indoor, and the requirements are different.

The outdoor one should withstand the double test of low temperature and high temperature, and it is best to choose a good one, and it is best to choose one coated with plastic on the outside of metal.

It is best to choose engineering plastics wrapped with metal mesh outside, and the temperature resistance should reach 90 degrees Celsius.

At present, the materials of solar water heating pipes on the market mainly include copper pipes, galvanized pipes, stainless steel pipes and other selling chain materials, and the advantages and disadvantages of these materials:

First of all, copper tube is one of the most widely used materials in solar water heaters, with good thermal conductivity and corrosion resistance, which can guarantee the quality and temperature of water. In addition, copper pipes also have good strength and durability, which is suitable for long-term use in solar water heating systems, but it is relatively expensive.

Secondly, galvanized pipe is also a commonly used solar water heating pipe material, and its advantages are mainly reflected in the relatively low level, which is easier for ordinary families to bear. Galvanized pipes also have high aging resistance and corrosion resistance, which is suitable for use in atmospheric environments, but the control of water quality and temperature and midstream is relatively inaccurate.

Finally, stainless steel pipe is a high-grade material in solar water heating pipes, which has good corrosion resistance and strength, and is suitable for use in high temperature and high pressure environments. The service life of stainless grinding and rolling steel pipe is long, which can meet the needs of long-term use, but it is relatively expensive.

In summary:The selection of solar water heating plumbing materials needs to be considered according to the actual situation, including factors such as budget, water quality and use environment. Although copper and stainless steel pipes are **high, they can ensure the stability of water quality and temperature, and are suitable for families who need high-quality water.

Although the galvanized pipe is lower, the control of temperature and water quality is simpler, and it is more suitable for some small families. In the end, you need to make the best choice according to your actual situation to ensure the good use effect and life of the solar water heater.

Choose the copper talk reputation tube

Copper pipe is a traditional solar water heating pipe material, which has good thermal conductivity and corrosion resistance. The inner wall of the copper pipe is smooth, which is not easy to attach impurities, and is also convenient for cleaning and maintenance. Stainless steel pipes have excellent high temperature resistance and corrosion resistance, and are also relatively strong and durable, but their thermal conductivity is relatively poor.

Generally speaking, high-quality solar water heating pipe materials need to have the following characteristics: first, good heat preservation, which can effectively prevent the water temperature from dropping; Second, it is resistant to high temperature, able to withstand long-term high temperature irradiation, and is not easy to age; the third is corrosion-resistant, which can withstand the corrosion of water quality; Fourth, it has good pressure resistance and can withstand the impact of water pressure.

Generally, the commonly used materials for solar water heating pipes include galvanized steel pipes, stainless steel pipes, copper pipes, etc. Among them, galvanized steel pipes are cheap, but easy to rust; Stainless steel pipes are durable and corrosion-resistant, but they are high; The thermal conductivity of copper pipes is good, but the price is also high.

OK. 2. Use solar water heaters, gas water heaters and circulating pumps in series.

The outlet pipe of the solar water heater is connected to the inlet of the gas water heater after passing through the circulating pump, and the outlet pipe of the gas water heater is connected to the household hot water pipe network. The end of the domestic hot water pipe network is connected to the return pipe of the solar water heater. When the sun is full and the water temperature of the solar water heater is high, turn off the power and gas source of the gas water heater (do not close the water valve), and the domestic hot water system uses the hot water supplied by the solar water heater without energy consumption.

When the sunlight is insufficient or there is no sunlight, and the water temperature of the solar water heater is low, turn on the gas water heater to heat, and the fire power can be adjusted according to the temperature of the inlet water of the gas water heater, which is more energy-saving.

Answer: There are many options for installing water pipes in solar water heaters, such as PPR water pipes, copper pipes, copper-plastic pipes (aluminum-plastic pipes), PVC pipes, iron pipes, etc. In fact, PPR water pipes are ideal for a variety of reasons. The reason is also very simple, first of all, a good PPR water pipe is very reliable in quality, which is completely comparable to copper pipe; There is also ** is more acceptable, much lower than copper pipes; Another important point is that it is healthy, without any rust and copper.

See the detailed answer.

You take a look at the pro.

Ask a question [awsl].

Hello dear, I am happy to serve you and answer your questions, mine is as follows: Yes, now they are all using PPR tubes. The PPR pipe can be used as the hot water pipe of the solar water heater completely.

As a new type of water pipe material, PPR pipe has a unique advantage, it can be used as both cold water pipe and hot water pipe. The interface of the PPR pipe adopts hot melt technology, and the pipes are completely integrated together, so once the installation pressure test is passed, it will not be like the aluminum-plastic pipe that will age and leak after a long time. Pros:

**Moderate, stable performance, heat-resistant and insulation, corrosion-resistant, smooth inner wall without scaling, safe and reliable pipeline system, non-permeable, service life up to 50 years.

What is the function of the tube in the solar water heater Hello dear, I am glad for your question: The vacuum tube of the solar water heater mainly plays the role of absorbing heat and keeping warm The vacuum tube has the role of absorbing heat energy. Vacuum tubes are generally composed of vacuum glass tubes.

After the water absorbs heat in the vacuum tube and heats up, the hot water above enters the water tank, and at the same time, the coarse cold water in the water tank enters the middle and lower part of the vacuum tube to form a natural circulation. When the ambient temperature is relatively low, the thermal efficiency of the delayed vacuum tube is higher than that of the yard peiyou, which is due to the good thermal insulation performance of the vacuum tube itself and is not afraid of freezing, so it is suitable for the ambient temperature of 0°. Cons:

Seals that do not have a blowdown function and vacuuming are easily damaged.

OK. The line of anti-freezing and thermal insulation of solar water heater pipes is electric heat tracing, which is also what we call "solar electric heat tracing". It can be left in for a long time, but it is recommended not to use it for a long time, so please turn off the power supply.

Unless you are very confident in the quality of your products, the model of installation and use, and so on. When installing solar electric heat tracing, please use leakage protection or air switches, and do a good job of waterproof, moisture-proof and insulation measures.

OK. 1. Use insulation pipes made of low transmission materials, such as foam materials, rubber and plastic materials, etc., to isolate internal and external heat transfer and play a role in heat preservation.

2. Large-scale solar water heaters (mainly hot water projects and heating projects) are mainly used for electric heating and insulation in addition to using thermal insulation pipes to avoid long-term power outages and freezing and damaging pipelines.

3. Large-scale solar water heaters (mainly hot water projects and heating projects) adopt circulating insulation, which is also one of the commonly used methods. When the temperature of the pipeline is too low, the hot water in the tank is circulated in the pipeline through the circulation of the circulating pump, which plays the role of heat preservation and anti-freezing.