In winter, the extremely low temperature makes people yearn for warmth, such as the quilt when getting up early, or a hot bath before going to bed. Faced with the low temperature in winter, many people prefer to take a hot bath before going to bed, and fall asleep with the heat. But sometimes due to the problem of the water heater, the water temperature is often unstable, and the “suffering” of hot and cold makes winter even more difficult. At this time, it is better to choose the most suitable water heater so that you can take a comfortable hot bath. Today, the editor will tell you how to choose an excellent water heater.
First of all, let us understand the different types of water heaters. At present, the most common water heaters on the market are divided into three types, namely gas water heaters, electric water heaters and solar water heaters. Although all of them can effectively heat daily water, according to their different characteristics, there are actually corresponding different usage families. Next, the author will explain through three kinds of water heaters.
燃气热水器
Let’s take a look at the gas water heater first. The heating method of the gas water heater is to heat through combustion, and after the heat is transferred to the cold water through the heat exchanger, the water temperature is heated. As the name suggests, the main fuel for this type of water heater is gas. Because the combustion process of the fuel can quickly release a large amount of heat, it has the excellent characteristics of instant use and heating at any time. At the same time, the gas water heater requires a small area, and it does not occupy the indoor space when it is attached to the wall. This type of water heater has a very convenient way of use and once occupied most of the domestic water heater market, but due to its common working principle, its shortcomings are also very obvious. Gas water heaters also accounted for most of the water heater accidents. If the gas water heater is installed in a room with no air circulation, it is prone to carbon monoxide poisoning. It is recommended that you choose to install it in a ventilated area during installation, and do not install it in the bathroom because of convenience. In addition, if the gas water heater is not adjusted properly, it will also produce hot and cold phenomena.
When buying a gas water heater, you need to pay attention to the following points:
1. The type of fuel used. At present, there are many types of gas water heaters on the market, some of which are not necessarily the same as the type of gas at home. At present, there are three main gas sources in China: natural gas, liquefied petroleum gas and artificial coal gas. According to the combustion heat characteristics of different gas sources, the size of parts of water heaters is also different, so you need to inquire in detail when purchasing.
2. Safety protection measures for gas water heaters. Considering safety factors, you need to know whether the product has protective measures when purchasing a gas water heater. Including safety protection measures such as flameout protection, overvoltage protection, and dry-out protection, which can improve the safety of the product.
3. The water output of the water heater. In fact, the water output of the water heater varies according to the specifications. You can see the difference between 6L and 8L when purchasing. A water heater with a larger flow rate is more suitable for a family with a larger population, while a water heater with a lower flow rate is suitable for a family with a smaller population.
热水器
Unlike gas water heaters, electric water heaters do not consume gas energy, but heat the water source through electricity. This type of water heater is subdivided into two categories: storage electric water heaters and instant electric water heaters. The water storage type electric water heater has a large water output, and the water can be boiled in advance, so the water temperature is more stable. But because sometimes the water storage type electric water heater will keep the boiled water warm, and the inner tank will be in contact with the water for a long time. It is best to choose a product with a corrosion-resistant coating on the inner tank when purchasing. Because of the storage tank, storage water heaters take up a lot of space. If you want to use hot water for bathing, you need to preheat it in advance, and if the water is insufficient, you need to wait for the water to boil again. The instant electric water heater does not have a water storage device. It directly heats the water through a relatively high current, and it can also be heated immediately. The water temperature of this type of water heater is relatively stable, and because there is no water storage equipment, it occupies a relatively small area. However, instant water heaters also have some disadvantages. Because of the use of high-power electricity, water heaters have higher requirements for wiring. If you are a user in an old-fashioned residential area, this type of water heater is not recommended.
Precautions for purchasing heat storage electric water heaters:
1. The capacity of the water heater. The heat storage electric water heater needs to be sure of the water storage volume because it needs to take into account the family population and the daily hot water consumption. Under normal circumstances, the rated volume of the water heater is 30~40L, which can support 3~4 people to bathe. If there are more people in the family, you can buy an electric water heater with a larger capacity.
2、由于经常与水接触，电热水器的内胆材质及涂层非常重要，使用寿命最长的是不锈钢内胆，其次是搪瓷内胆，最后是涂有固化树脂的镀锌内胆。
3. Because electric water heaters need to use electric energy, more attention should be paid to the safety of electricity use. At present, electric water heaters generally have grounding protection, anti-dry protection, anti-high temperature protection, and anti-overpressure protection. Some products also have leakage protection, automatic disconnection of sewage, additional power failure indication function, anti-power wall function, etc.
Points to note when purchasing an instant electric water heater:
1. It is the same as the heat storage water heater, because the instant electric water heater requires high current, and more attention should be paid to the safety of electricity use. When purchasing, try to choose products with more complete protection measures.
2. Instantaneous water heaters consume a lot of power when heating, and the old lines cannot bear the excessive load. It is recommended to check whether the home can bear it before buying.
太阳能热水器
Compared with gas water heaters and electric water heaters, solar water heaters are obviously more environmentally friendly. It directly collects the heat radiation of the sun and heats the water through this heat. At present, the common water heaters on the market are mainly vacuum tube solar water heaters. The current solar water heaters are not as “reliant on the sky” as before. Even in places with less sunlight, better quality solar water heaters can make full use of the heat of solar radiation to heat water. In fact, in order to prevent continuous rainy weather from bringing light, some solar water heaters also have the ability of electric heating, so that you can take a bath even in rainy days. Compared with gas water heaters and electric water heaters, the installation conditions of solar water heaters are more stringent. If you live in a building, you need to know whether it can be installed.
