A list of the contents of this article:
- 1 、Working principle of air energy water heater
- 2 、I heard that there is a kind of air energy. How does the radiator work?
- 3 、Gree kitchen air conditioner and air can be an external machine how to connect electricity?
- 4 、How to install the air return pipe?
Working principle of air energy water heater
The air energy water heater works according to the “inverse Carnot” principle, specifically, the “outdoor unit” acts as a heat exchanger to absorb heat from the outdoor air, heat the low boiling point working medium (refrigerant) and make it evaporate. the refrigerant steam is compressed and heated by the compressor into the water tank, where the heat is released and condensed and liquefied, and then throttled, reduced pressure and cooled back to the outdoor heat exchanger to enter the next cycle.
To put it simply, it is to absorb the heat in the air to add hot water, and the air that is absorbed heat can also be used in the kitchen to solve the muggy problem. Air-powered water heaters do not need sunlight, so they can be kept at home or outdoors.
Extended data:
Advantages
1. Energy saving
The biggest advantage of air energy water heater is energy saving. The low-temperature heat energy in the air is converted into high-temperature heat energy through the compressor, based on the same amount of hot water produced. Compared with the electric gas water heater, the electric energy saving is maximized. The use cost is only 1 amp 4 of the electric water heater, while compared with the traditional gas water heater, it does not consume any gas fuel, and the use cost is only 1 cycle 3 of the gas water heater.
2. Convenience
Because the amount of air is not affected by indoor and outdoor, sunny and cloudy days, compared with solar water heaters, air energy water heaters are very convenient, whether installed indoors or outdoors, sunny days and temperatures above zero degrees Celsius. Can be used.
Shortcoming
1. Installation of air energy water heaters
Domestic air energy water heaters often need a water tank to heat and store hot water. Take a family of 3-5 people as an example, they need a 120L-150L water tank. Such a large size of the water tank is not easy to coordinate with the whole home, so consumers can only install the air energy water heater on the balcony.
2. Environmental adaptability
As most of the air-energy water heaters in the market are designed to work at a normal temperature of 0-40 ℃, air-energy water heaters tend to perform well in the south where the ambient temperature is relatively high. However, in the northern cities where the winter temperature is only-10 ℃, the air-powered water heater is difficult to achieve the desired effect in the design.
Source: Baidu Encyclopedia-Air Energy Water heater
I heard that there is a kind of air energy. How does the radiator work?
The essence of air energy is air conditioning, which only has the heating function of air conditioning. Absorb heat from the outdoor air and heat the water in the tank. In this sense, heating directly with air conditioning is similar to the heat obtained by using air to drive the radiator room. However, the actual heating effect, the use of air can drive the radiator is better than air conditioning.
The air conditioner transfers heat directly to the air, because the air is a poor conductor of heat and conducts heat very slowly; the fin area of the evaporator is limited, and the radiation heat dissipation effect is not very good; while the position of the air outlet of the internal machine is higher, the convection is mainly carried out in the space above the air outlet, but the air convection in the space where people usually move is not good. Therefore, the effects of the three ways of air conditioning heating and heat transfer are not ideal.
Air can drive the radiator to transfer heat to the water, and then transfer heat to the air through the radiator. The use of radiator increases the contact area with air, and the effect of conduction and radiation heat dissipation is better than that of air conditioning. The key is that the installation position of the radiator is much lower than the air outlet of the air conditioner, and the kick line radiator is more close to the ground, so that convection can occur in the air in the lower indoor space, so that the space where people often move warms up faster, so, people feel that the heating effect is better.
What is an air energy system?
It is also called “air source heat pump system”. To put it simply, it is a device for radiating heat to the outdoor air. In summer, it releases indoor heat into the air, thus obtaining the cold capacity in the air, and then transports it to the indoor evaporator through the heat exchange medium in the pipe, and then continues to transport the indoor heat to the outdoor unit condenser through the heat exchange medium in the pipe to exchange heat with the air. We need heat in winter, and this process is similar to the principle of absorbing cold in summer; its brothers also have water source heat pump systems and ground source heat pump systems.
At present, in Chengdu, there are more air energy two-in-one systems in the air energy heat pump system, that is, air conditioners and ground heating share the frozen water provided by external machines for indoor cooling or heating water for indoor ground heating.
The main thing here is to know how effective it is to feed the heating water provided by the air energy mainframe into the radiator.
The answer is that according to the normal design, the heat is not enough! Because the temperature of the heating water provided by the air energy mainframe is only 58, some brands can only provide about 45% of the water temperature, while the water temperature required by the radiator we use is usually 75-82%. If the water supply temperature is reduced to 45-55, in our high humid and cold area of Chengdu, according to the normal configuration, it is bound to affect the warming.
In the face of the need for radiators, we have two ways to solve the problem:
1. As I mentioned earlier, the prerequisite for ineffective access to radiators in air energy systems is the conventional design of radiators. This conventional design is based on a water supply temperature of 75-82. For example, in a room of 10 square meters, a group of high 600mm and long 600mm can be designed.
Then in the 45-55 water temperature conditions, the radiator will be longer, for example, or 10 square meters of the house, the radiator will be 600 high, the length of 1000mm or 1200mm, the purpose of this is to increase the radiator cooling area to make up for the water temperature, but the disadvantage is to increase the risk of conflict between radiator and decoration and increase the cost.
2. A gas wall-mounted furnace is connected between the air energy main engine and the radiator, and the hot water output from the air energy main engine is reheated to 80 by the gas wall-mounted stove, and then sent to the radiator to dissipate heat, and then go back to the main engine to continue the next cycle heating. Or directly stop the air energy main engine, directly from the wall-mounted stove to the radiator for heating.
In this way, the wall-mounted stove is generally equipped with a heat exchange tank to meet the demand of domestic hot water; when we need to use hot water, the system will give priority to the heat transfer of domestic hot water and suspend the heating of the radiator.
In this way, the advantage is to ensure the normal heating of the radiator and solve the hot water demand of multi-purpose water points at home; the disadvantage is that it will increase the initial investment and the increase of energy consumption in the later stage.
Summary
Air energy heat pump system, which is a kind of general name of air conditioning system, is mentioned in this paper. It can solve the cooling of air conditioning and heating needs of heating, it is more suitable for the needs of the ground heating system, if you want to use the radiator, because its water supply temperature and the design temperature of the radiator need to have a certain deviation, so it is necessary to use another way to design the radiator, starting from the practical application, I give my actual working method for your reference. If there is anything wrong, please leave a message for correction!
[focus on sharing HVAC skills, welcome to follow the collection discussion]
After analyzing your question, you get two core keywords “air energy” and “radiator”, and these two words also belong to two different products. It is relatively simple to solve the questions in your mind accordingly, as long as you understand the two products, naturally the questions in your mind will disappear. And there is a very good solution to this question, and we will come to the final conclusion that the heating effect of air with radiator is mediocre and relatively energy-consuming.
Air source heat pump, heating heat source
What is air energy?
Most of the term “air energy” is a colloquial form of the common people. And this air energy actually has a professional term or it is a product, for the name of this product is called air source heat pump. It works like this: use a compressor to squeeze the heat out of the air, and then use this heat to heat hot water, which is also the hot water we need in the heating process. But there is one thing that many people do not know, that is, the temperature at which hot water is produced by this air-source heat pump, that is, its highest temperature is about 60 degrees, and the highest temperature is not more than 65 degrees. It is used in the heating end, the best match is the floor heating or fan coil unit, not the radiator.
Cast iron radiator
Basic classification of radiators
Now there are many types of radiators on the market, among which the older radiator is the traditional cast iron radiator, its biggest advantage is that it contains a large amount of water, so the heat dissipation effect is better, but it requires a higher water temperature. This is the same as other radiators, whether it is aluminum radiator or aluminum radiator, such radiator heating is a way of radiation. In this way, it has relatively high requirements for water temperature, want to have a good heating effect, the water temperature should reach about 70 degrees. In this way, the highest water temperature supplied by the air source heat pump is 60 degrees, and the heating effect will not be particularly ideal. The hot water needed in the form of ground heating is hot enough at 45 degrees.
Air source heat pump in heating
Conclusion: in terms of the heating scheme using air source heat pump as heat source, if the matching radiator is the heat dissipation end, its actual heating effect will certainly be discounted, but it is not unusable. Mainly because in the process of converting coal to electricity, many families basically install radiators, so it would be unrealistic to change all of them to floor heating at this time. The cost of this transformation is too high, the use of radiators can also achieve the effect of heating, but the indoor temperature is lower and the power consumption will be higher.
Air energy is now a new product, the principle is not complicated, but its heating effect is better, so now there are many large shopping malls, hotels and families also use.
The principle of air energy is to use the heat energy in the air, it is actually an air conditioner, but it attracts the heat in the air and is heated by water supply, which is faster than using electric water heating directly, that is, it is more energy efficient. Of course, it can be used to bring a radiator, because its heat source is hot water, and the main function of air energy is to heat the water. The heated water can be used as the heat source of the radiator, of course, it can also be used as hot water for bathing, depending on its own use.
Its effect is mainly for the relatively cold weather in the north, whether it can work normally, at present, it is possible to change coal to electricity in the north, and air energy is also the main product, and the effect is also possible. air energy can now work normally at-25 degrees or-35 degrees, and its effect is still good, but it will also be discounted in places where the north is too cold. This is also inevitable. However, during installation, you can choose the corresponding power, for example, 60 square meters, 6 kilowatts, colder places in the north, and larger ones, such as 8 kilowatts or 10 kilowatts, which should have a very good effect.
When making a choice, you have to choose this kind of one. Generally speaking, Haier or Gree can also have air energy. That can only be used by washing, heating is not good, heating is as high as the one above, and the price will be relatively high. Many factories or buildings use this, that is, commercial heating equipment.
Air can be radiator, and the effect of use to meet the daily heating needs, the following can see the use of a user.
A villager in Gujiao, Shanxi Province uses a 6-pipette Mei-Yue frequency conversion air energy heat pump unit with two sets of new radiators, the effluent temperature can reach 53%, and the indoor heating temperature can reach 20%. Coupled with the local electricity price subsidy, the heating fee is only more than 200 yuan a month. It can be seen that the heating effect of air energy heat pump with a new type of radiator is still good.
Gree kitchen air conditioner and air can be an external machine how to connect electricity?
There may be two kinds of wiring: 1, the external machine with a control line, that is to say, there is a signal line, generally speaking, four lines plus a signal line, if the signal line has a socket, it can be plugged in directly; if there are four lines, first look at the color, as long as it is generally marked on the wiring post, as long as it corresponds to it. If there is no color, according to the regulations, red hot wire, black zero line, yellowish green grounding. The external machine has two sets of 220V power supply, which controls the fan and the compressor respectively. 2, the external machine does not have the control line, this kind of situation is relatively rare, generally is the previous unit.
Air energy air conditioning is a multi-purpose machine with the combination of heat pump water heater and air conditioner, which can enjoy free air conditioning while enjoying energy-saving hot water. When there is no hot water, it is a separate air conditioning system.
1. The air conditioning water heater combines the air conditioning function of the air conditioner with the function of making hot water; the main advantage is that when the air conditioner is used in summer, the air conditioner provides cold capacity to the room while the outdoor mechanism takes hot water for daily use.
2. Among them, the quality of the unit air-conditioning water heater is relatively reliable and can be used, while the quality of the multi-connected air-conditioning water heater is unstable and the design is not mature. There is a kind of air conditioner that can be heated by hot water, which uses the heat of the water heater to transfer the heat to the air conditioning coil, and the air conditioner uses the fan to transfer the heat to the room.
Air energy water heater, also known as “air source heat pump water heater”. The “air energy water heater” absorbs the low temperature heat in the air, gasifies through the fluorine medium, then pressurizes and heats up through the compressor, and then converts the feed water into heating through the heat exchanger, and the compressed high temperature heat energy is used to heat the water temperature.
The air energy water heater has the characteristics of high efficiency and energy saving, producing the same amount of hot water, which is 4-6 times that of the general electric water heater, its annual average thermal efficiency ratio is 4 times that of electric heating, and its energy efficiency is high.
How to install the air return pipe?
If the air energy water heater does not use hot water for a period of time, the water managed by hot water will become cold water. If you want to use hot water, you have to wait for cold water to run out of hot water, which wastes a lot of water resources and costs a lot of water every month. Therefore, in order to solve this backwater problem, it is necessary to install a backwater system on the air energy water heater.
The backwater system mainly includes these two main parts, one is the backpump, and the other is the control system for the backwater pump. So how do you do it in the layout? The first step is, when decorating, pull a return pipe back to the place where the water heater is installed in the farthest place where the hot water is used; the second step is to install the return pipe, so that the return pump can pump the cold water left in the hot water pipe into the return pipe and merge it into the cold water pipe, so that hot water comes out of the hot water pipe when in use.
The backwater system is easier to understand: if the hot water in the hot water pipe is not used for a long time, it will cool naturally. The backwater system is a set of devices that pump the low-temperature water from the hot water pipe back to the water heater, reheat it, and then use it. As shown in the following figure, the cold tap water is heated by the hot water appliance and transported to each place of water use through the hot water pipe (indicated by the red line). When the temperature of the hot water pipe drops to the set value, the return water device works (shown in the blue box), pumping the low-temperature water back to the water heater through the return pipe (indicated by the yellow line), reheating, and then inputting the hot water pipe for use, and so on. In the picture, the backwater pipe and the backwater device constitute the backwater system.
So much for the introduction of the air energy transmission line. Thank you for taking the time to read the contents of this site. Don’t forget to look for more information about the air supply line and the air energy transmission line on this site.