Every time i see a gas heater, a school student as a boiler, i have a different feeling of affection, because the gas heater is a modern domestic boiler。
The role of gas heaters is to provide the home with a constant flow of hot water. The principle of gas heaters is to convert the chemical energy of the fuel into thermal energy and thus to heat. In order to learn how to buy gas heaters, let's start with the principles of gas heaters。
I. Rationale for gas heaters
The rationale for the gas heater is as follows: when you turn on the heat valve of the water heater, the cold water begins to flow into the heater, and during the flow of the cold water, the gas control valve is triggered, gas is transported to the combustion chamber, and ignition/burning/heating takes place. It is then heated to a certain temperature of water and transported under the control of a temperature sensor to the user, thus providing the user with hot water at a suitable temperature。
So the core parts of the gas heater consist mainly of the following components:
1) pumps, which can provide pressure, will determine the distance, volume and intensity of the discharge。
2) heat exchangers, in particular for the flue gas following cold water and gas combustion, whose heat exchange area will directly affect the speed and speed of water temperature increase
3) the combustion chamber, the speed and adequacy of the gas combustion ignition, can also affect the heating effect of the gas heater, the silence of the combustion process, the silence and the experience of many people。
4) an exhaust fan, the flue gas after the combustion of the gas, in exchange for heat, is filmed in the environment. If the smoke is not released in time, there may be some security risk. The noise generated during the smoke can also affect users to some extent。
Ii. Pain spots during the use of gas heaters
According to the ppchouse survey of consumption trends of 2021 water heaters, users encounter pain problems in the use of gas heaters. Slow heating, unstable hot water temperature, low water output and high noise are problems encountered by users in the use of gas heaters。
These pain problems also require attention in the selection of gas heaters。
For example, the slow pace of heating may be related to the fact that the gas heater in the home does not have a zero-cold water function, because the gas heater itself is fast, but when there is no zero-cold water, it makes the user feel like it needs to be put cold water before it is used, so it is a slow vote。
The amount of water produced is mainly related to the pressure of the pump, and the distance from which it is installed will have some impact, and the closer the distance from which it is transported, the greater the amount of water available, the greater the pressure。
The issue of noise and ignition is related to the design of the combustion chamber and, if the silent properties are the focus, preference should be given to new gas heaters that are marketed primarily for silent use. It's like america's new quiet m5。
Https://xg. Zhihu. Com/plugin/0bd8b74b8a66161d37f9d4244e06cef? Biz=ecommerceiii. What are the points to focus on in selecting a gas heater? Zero cold water
Many of our friends who are using gas heaters should be troubled by the same problem. That's when the gas heater started running cold water. If it's a bath, just stand in the bathroom and get cold. The water temperature will not reach the set value until it is released for a certain period of time。
I wonder if you've thought about why the gas heater comes out of cold water and then hot water
In fact, cold water comes from two sources: in part from cold water residues in gas heater pipes; and in part from the fact that when the gas heater is activated, it is the cold water that triggers the gas switch, and then the gas combustion heats the cold water, which is not instantaneous, so it also brings in some cold water。
The cold water that comes out of the showers for a long time has caused great distress to the users of the gas heaters and has caused some water to be wasted on each bath. A number of enterprises later discovered the pain of the user and then began to develop and launch the “zero cold water” gas heater。
Zero-cold-water water heaters use the simple method of adding a loop to the water heater pipeline, as shown below in red. In this circuit, hot water is provided at a certain temperature. So when the user turns on the gas heater, the direct output is warm water, not cold water. Although it seems simple from the figure, it is a major advance in improving user experience with gas heaters。
The design of zero cold water, although it looks simple, also poses new problems。
Some of the zero-cold-water gas heaters need to be pre-positioned at the time of installation and, if they are not left at home, this poses problems for installation。
However, some of the manufacturers are now working on this issue. The united states, for example, has addressed the problem of the installation of zero cold water by older users through the development of “h-type patent valves”. Zero cold water is not restricted by the pipe。
3. 2 zero cold water for energy conservation
In order to achieve zero cold water, there is a need to maintain a certain temperature of hot water in the circuit, which requires continuous system circulation. And this will cause some users a pain in the way of “increased gas consumption”。
How can we achieve both zero cold water and energy efficiency
Then just give the user zero cold water when it's needed. This will maximize energy efficiency. In the era of zero cold water, 1. 0, the united states provided mainly light zero cold water, regular zero cold water and single zero cold water, which could solve some of the problems of zero cold water consumption。
The most recent upgrade of zero cold water 2. 0 in the united states includes three major upgrades:
In response to the need to re-activate cold water in baths midway, cold water is eliminated in a low-heated manner, providing a more comfortable user experience。
For users who take a bath at 10 a. M. At regular intervals, the a. I. Records the bath time to provide regular cold water。
In response to the problem that the zero cold water cycle may affect the length of the heating water and therefore lead to the cost of air, the issue of energy-saving half-pipe zero-cold water was raised, i. E., the provision of hot water for users based on the time required to complete the single-barrel cycle based on the calculation of hot water (while the usual zero cold water on the market is cold, hot-breath preheating)。
Compared with conventional zero-cold water, the united states 2. 0-zero cold water reduces hot water pre-heat time and significantly reduces gas consumption, which can be reduced to 1. 3 minutes, halves gas consumption and, naturally, halves gas costs。
3. 3 mute properties
There are more noise problems in domestic gas heaters in earlier years. The silent properties of gas heaters have also received increasing attention from users in recent years. The noise affects the rest of the family and the physical and mental health of the person。
Previously, it was possible to analyse noise from gas heaters, mainly from the following:
1) when the gas is burning, there shall be a noise, which shall also be felt when you use the stove on a daily basis or when you watch the fire。
2) motion components in gas heaters inevitably generate noise. For example, it is caused by flue-gas vents and pumps delivering water. The wind engine is operating at high speed with some noise。
3) during the operation of the pumps, noise is inevitable. In particular, noise is more pronounced when starting or working with high power。
4) there will also be greater noise if the water heater's body and walls resonate。
5) zero cold water gas heaters, and during preheating, the water also produces some noise during the loop。
Under the auspices of the industry and the relevant departments, the quasi-system classification standard for domestic gas rapid water heaters was constructed, dividing the silent properties of gas heaters into three levels. If the level 1 silence is reached, the burning side noise can be reduced to 43 db, the positive noise can be lowered to 40 db and the zero cold water preheated noise can be reduced to 40 db。
3. 4 should we choose a drum or a pump gas heater
Gas heaters can also be divided into strong drums, which use lower winders, and upper winders, depending on how they are placed。
The advantage of strong drums (downwinders) is that they are usually thinner, but the downwinders have higher requirements for the sealing of gas heaters, which would otherwise cause co or flame spills; and that they are less resistant and the combustion is more susceptible to the wind, which should be easily understood。
Indoor pressure of a strong pump (the upper winder) is negative and can effectively ensure that the exhaust is fully discharged, that co spills are prevented and made safer; and the combustion space is relatively larger and contributes to full mixing, but the fuselage is also thicker and more energy-efficient。
It is now recommended that users seeking a lightweight airframe choose a strong drum and that the rest prefer a strong pump。
3. 5 constant temperature combustion for heat
In fact, heat exchange is not easy to see simply from the parameters, but in the case of a breaker, the size of the wings of the heater, the material used for the heater, the flow effect of the heater, can be judged. In case of combustion, it is even more difficult to determine directly, and usually the new generation of manufacturers, the upgraded combustion technology becomes stronger。
Temperature control algorithms, most of which are commonly controlled by pid, control the amount of gas, the size of the flame, and thus the desired temperature, depending on the temperature of the discharge and the input of the water from the user。
In recent years, the united states of america has proposed a constant-temperature adrc algorithm, developed jointly with universities, which takes into account more intermediate variables and thus achieves more precise control effects. This algorithm is achieved by relying on a separate chip (adr 2. 0), which can be adjusted in advance, depending on the temperature of the cavity, the changes in the last water flow and the projected changes in the intermediate combustion, so that a rapid response can be made to achieve a better level of temperature fluctuations below 0. 5°c, which will also bring you more accurate water temperature based on the given values。
Iv. Recommendment of a zone zone water zone above gas healther: beautiful zone jsq30 m5
If you're considering gas heaters in the near future, you can try the beautiful new generation of zero-cold-water gas heaters, which is also a gas heater with silent properties, with the following main highlights:
It is well-designed, with a super-pretty large screen and a sense of quality; it has a variety of silent designs, which belong to the first-stage static gas heater, which can reduce interference with families; it has zero cold water 2. 0 technology, with the newly introduced energy-saving semi-barrel zero cold water technology, which can significantly reduce the time of zero cold water and make it more energy-efficient; it is more secure by using a straight-winder type design, which can be effectively smoked and resistant to class 9 wind, which can effectively prevent internal flue injection; and it has an efficient concentrated and steady-fired design, which combines water pipe technology, which can reduce the temperature differentials of water outage and make hot water comfortable areas. Having a temperature control system of less than 0. 5 °c, the adrc 2. 0 system is really strong; it has multiple net filtering protections that support intelligent connections and can be remotely manipulated. The capacity is 16 l and the applicable water pressure is 0. 02-1. 0 mpa and the energy efficiency level is 2 and can be selected according to the heat required。
If you're looking for a gas heater, and you want to have a gas heater that's high-colored, silent, zero cold, secure, warm, smart, then you can consider a wave of silent jsq30 m5。
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Thank you for watching, and i hope this will help you understand the gas heater
