Tag Archives: pressurized solar water heater

Copper plate concept of financial

Plate and vacuum tube solar collector

In China, the flat panel solar water heater is experiencing a very different situation with other countries, are in rapid development of China\\ s solar water heater market, flat panel solar water heater market share actually falling instead of rising, in a small market, almost were forced out of their own existence is difficult even to maintain, just south of the water project in a certain degree of application.

Study whether its flat-panel solar water heater market in southern China Sung corner of the reasons I think are as follows: 1. Not antifreeze, is difficult to apply in the northern region; (2) The maximum water temperature is low, it is considered \"low efficiency\"; 3 price expensive and costly. We summarize its shortcomings, can be expressed in six words: fear of cold, inefficient and expensive.

The first reason is because most manufacturers are using flat plate solar collector panels directly through the cold water pipe to the water heating method, this method without circulating pumps, water heating and then increased based on the principle of circulating the water to be heated, this method is indeed very simple and cheap, but it is not a good way: it causes the dirt collector efficiency is very low and the rapid formation, and because the plate is an ordinary pipe flow of water, a little persistence in some low temperature, extremely easy to cause water to freeze and expand, so that the collector tube completely scrapped, so the process form, the flat panel solar water heater can only be used in the South, and because of scale and other reasons, it is also very short life – despite and vacuum tube solar energy it is not less than life, but at every turn and in the Western world compared to 40 years of life too trivial.

Water natural circulation solar water heater should never have been there: just because you can save a circulating pump and some refrigerant, flat-plate collector on the lost efficiency, life and frost resistance, the costs are too heavy, it is worth too , this point is worth re-consider the.

For the second question, it is equally absurd logic: \"The maximum water temperature is lower,\" will lead collectors\\ efficiency is low, \"it? From the perspective projection of the sun, the actual vacuum tube solar light-receiving area, in any case can not be compared with the flat-plate collector, flat solar collector efficiency must be higher than on natural solar vacuum tube: necessary because the interval between the vacuum tube, void between the two sandwich vacuum gap, and the glass tube itself inevitably surface reflection, vacuum tube solar collector efficiency can not be done very, flat plate solar collectors, if a little good to do some vacuum tube collector heat absorbing device, to achieve the flat-plate collector with an area of ??65%, it is a good.

In the case of poor water circulation, due to the vacuum tube collector heat better than flat-plate collector, so it may be higher than the water temperature is a lot of flat-plate collector, but we must not forget that the temperature and heat are two a concept: lighter flame temperature than the water temperature high vacuum more than 800 ? can be achieved, but relative to the ambient temperature, its heat is not great: a lighter to heat the entire issue, even in the case of 100% efficiency , was only able to make 10 kg of water rise 3 ? only, as long as the collector to the heat transferred out in a timely manner, the collector efficiency of flat solar water heater to be much higher, so we can say, flat-plate collector efficiency is lower than the vacuum tube collector, is a completely wrong and absurd conclusions.

The third solar panel problem may be more important than others, due to extensive use of non-ferrous metals, the cost of flat-plate collector is higher than the vacuum tube collectors, in this case, the solar panel manufacturers have embarked on a lower the cost of the road, and even go some way off. They tried every way to reduce the amount of copper, the copper collector made thinner, leading to its thickness has not been referred to as copper, but should be known as the copper foil; copper tube wall thickness is continually decreased, only to bear several kilograms of pressure to maintain the liquid inside the tube will not leak; the same time do everything possible to aluminum instead of copper; these efforts to reduce costs, make solar panel this all-powerful in the world, monarchs of the world\\ s energy-saving products in China has been to almost forgotten the point.

Solar panel manufacturers in China, almost all embarked on the road such a vicious circle, that is, to reduce costs – thinning of copper – performance – lower prices … Many manufacturers of copper, has thin to less than 0.15mm , in large part to the loss of a brass plate collector heat transfer ability, which is caused by flat panel solar collector performance \"actually\" as the main vacuum tube solar collectors.

As the collector plate is too thin, even the excellent thermal conductivity of copper, the thermal conductivity has also been inadequate: in the collector plate parallel to the water\\ s edge of the area, panels absorb the sun\\ s heat conduction do not have enough channels to brass, large part of the way to the outside world Youyi radiation and radiation losses, if copper thickness of 0.15mm, then the width of each meter-long, while the average copper collector plate from a distance of 30mm, each 1 ? temperature of the heat capacity only: Q = (398 × 33.33) / 6666.67 = 1.99 watts.

In the flat plate solar collectors in, there is movement and friction components, thermal insulation box and glass cover so that copper has been well protected, as long as some little copper material processing, you can make the collector plate core greatly extend the life, even up to 100 years of life, it is possible to achieve this and the vacuum tube, but more than ten years of life more than the really big difference, flat-plate collector can be more efficient, frost resistance and better, more stable and reliable, and construction can be achieved with the deposit (70 years) purposes.

Properties of copper with the financial

In ancient China, bronze casting currency as the main material itself has a property of its financial side, and copper coins, currency long-term become a major role in the Historical Records recorded in the \"gold\", there are actually referring to copper, but because of the social ownership of copper is much higher than gold, so the price of copper is much lower than gold, but this does not prevent the copper with the financial attributes.

If only to preserve and increase the ability to consider a metal, gold and copper as compared to what may not appear to compete with, the use of property from the terms of the metal, gold is far less than copper, gold can do, basically to do more of copper good.

And copper has a very excellent thermal conductivity, the only all metal thermal conductivity than copper, silver, and copper alloy heat capacity of only 1 / 3, that is, 3mm thick aluminum thermal capacity and 1mm thick copper quite.

Broadly speaking, any commodity, at least has a dual property: that is, \"using the property\" and the \"residual value of the property.\" However, the residual value of the goods is not bound to blindly reduced, some residual value may change the products, it is likely to increase the residual value, such as gold jewelry, it has a decorative addition to the use of property, but also There can be quite a \"preservation\" of the property, it \"preservation\" of the property as the market price of gold changes, we may appreciate that attributes of goods, as goods of \"financial attributes.\" In contrast to the copper material changes in the market for decades, we can be sure, because the use of flat solar copper, copper to keep it as long as the \"quality\", copper financial attribute will also affect the development trend of solar panel.

Financial concept of solar flat copper

And the existing flat solar design is different from a substantial increase in the efficiency of flat-plate collector under the premise that if we can design, and manufacturing, we can make the copper flat plate solar collectors to maintain its quality, then this part of the copper to have a \"preservation and appreciation of the\" financial attributes, if the dual nature of the goods to be applied to practice, then, for those specially designed and manufactured goods among the copper material to maintain the integrity of the flat plate solar collectors, We have reason to double its properties, that the use of property and financial property respected. In these materials to maintain its financial properties of copper, while it also provides us with energy efficient solar energy products, which is gold and silver can not be done.

In the new design concept, which is sufficient to consider the financial properties of copper in the design and manufacture of cases, the thickness of copper due to cost considerations will no longer be indiscriminately thinning, the thickness of the collector can be even thicker than 1mm, copper is extremely superior thermal conductivity can be given full play, this flat plate solar collectors, the performance will far exceed any similar existing products, particularly important is that these coins have been made for years of excellence for the user contribution after itself without any change, it will not decay, oxidation and deterioration, as it has just the same as the factory when it is still pure copper sheet, copper sheet can continue to use and transactions can also be a very low price smelting of copper ingots and re-processed into any copper.

If the two-tier flat-panel solar water heater product attributes were open, we will find a substantial increase in the use of copper after its collection efficiency and service life will be an unprecedented increase, and its frost resistance can be With the heat-carrying agent components significantly strengthened reasonable, even low-temperature flexibility to adapt to its territory of China of any low temperature limit is also possible that the preparation of the heat-carrying agent is technically just a simple choice. Thus, this superior performance of flat plate solar water heater, only the last question, that is the problem of high cost.

If the flat panel solar water heater with copper materials can eventually sell at reasonable prices to the market, so that it sets the price of flat panel solar water heater should be divided into two parts, the first is the purchase of solar water heater price of the property, the first Part II is the purchase of solar energy in the copper plate of the financial attributes part of the price, it is certain that, due to properties of copper material was spun off from the water heater, water heater properties attributable portion of the price, compared to conventional flat panel solar energy, it certainly will reduce the price – even though all this water heater performance, and have quite different traditions of various , water heaters, but it\\ s the price of the property indeed reduced. In the second part of the price, considering the new flat panel solar water heater is almost unlimited service life, with reference to the evolution of copper prices over the past few decades of history, we can be sure, it\\ s part of the financial attributes that are bound to add value of.

Solar panel manufacturers who should immediately stop using the traditional techniques such as aluminum and copper, or the use of thinner copper and other methods to reduce product costs, because all these methods have proved it can reduce the performance of solar panel, longevity and frost resistance, only the introduction of copper, the concept of financial, technical, design and manufacturing, so that the copper into a viable financial economic model, was able to significantly improve product performance, based on the cost of reducing its use of the property is a really benefits the country, and contribute to environmental protection and reduction of scientific road.

To achieve the concept of the introduction of the copper plate solar water heater financial product purpose, manufacturers need to do the following main points:

1 completely abandoned the natural convection solar collectors and thermal storage mode in order to improve collection efficiency and to prevent tube fouling;

(2) a significant increase in copper collector plate thickness to improve the ability of heat to the tube;

3 starting from the design to protect copper and copper materials, permanence, and to prevent welding aluminum compound, in order to facilitate the durability and preservation brass plate;

4 to establish the recovery of copper, trading and evaluation system;

5 is much higher than the current build and promote new solar water heater collector efficiency standards.

With the increase in labor costs in China, with enhanced public awareness of energy conservation and the establishment of scientific economic concepts, flat panel solar water heater has ushered in a new historical opportunity, solar panel manufacturers who should seize the opportunity to change the concept into a new flat panel active solar water heaters, scientific experiments and analysis, to provide more efficient, economical and reliable solar energy products, the flat panel solar water heater into the national market, while the copper introduction of the concept of financial, energy conservation is a good way to have a good social .