Many of my friends have this experience. When using the gas water heater to take a bath, once the shower is turned off and then turned on the shower again, it will start to look a bit cool, but it will take a few seconds to get hot water, and then the water temperature will return to normal. Some users' sense of experience caused a lot of influence.
Mr. Zhang said: Every day I return home after work is very tired, I want to take a refreshing shower. Whenever I close the shower to wash my head and open the shower again, a burst of water is always very hot. , And it will be scalded. Get the whole person in a bad mood.
Adults are inevitably scolded and our cute babies are even more difficult to avoid.
A baby’s mother said: When bathing the baby, turn off the shower and apply shower gel to the baby. When it opens again, the temperature of the water suddenly rises. The hot baby cries and makes trouble. The baby is scared to bathe. .
What makes this unguardable hot water come from? Today let's find out!
First, why the water temperature suddenly rises
After turning off the tap for a while and turning it on again, there will be a very hot water temperature. This phenomenon is called water temperature rise. On the one hand, the water in the heat exchanger stops flowing after the faucet of the water heater is turned off, but the residual heat remains. The water in the heat exchanger will continue to heat, like when we cook, although the gas stove is turned off, but there is still warm temperature at the bottom of the pot, then the food inside will still be heated.
Therefore, the water temperature is very hot for a period of time after the faucet is turned off and on. Normally, we only need to pay attention to avoiding it when it is first released. This does not affect the use, but the elderly and children often fail to avoid or dodge consciousness. Will cause scalding accidents.
Second, how to solve the sudden rise in water temperature
For this issue, the top brand gas water heaters on the market have also taken this into consideration in terms of functional design. For example, Fang Tai's 'Immediately Open and Heat' series products are equipped with a bypass tube design to ease the temperature rise. A phenomenon.
The so-called bypass pipe design is also called the bypass water mixing technology. It means connecting the cold and hot water pipes of the heat exchanger to connect the hot and cold water pipes to reduce the temperature rise of the stop water. It is like using a bypass pipe. Root pipe, into a cup of hot water, constantly adding a small amount of cold water, which acts like a small mixing valve.
After the gas water heater is added to the bypass pipe, it is equivalent to diverting a part of the amount of water entering the heat exchanger, so that this part of water flows through the bypass pipe and then is mixed with the hot water from the heat exchanger, and the mixed water temperature is heat output. Water temperature. In order to reach the set outlet hot water temperature, the water temperature in the heat exchanger must be increased so that the high water temperature of the heat exchanger is combined with the low water temperature of the bypass pipe to reach the set outlet hot water temperature.
When the internal water temperature of the heat exchanger is increased, the temperature difference between the heat exchanger and the heat absorbing plate is reduced. After the water is stopped, the heat transferred from the heat absorbing plate to the water staying in the pipe is reduced, and the water temperature rise is also reduced. With the increase of the set temperature, the water temperature in the heat exchanger is also correspondingly increasing, and the water temperature rise will be reduced accordingly.
In addition, in addition to reducing the temperature rise of the stop water, the addition of a bypass pipe has the following advantages:
A. Overcoming the resistance of the heat exchanger's internal piping to achieve a large flow rate, especially for high-load water heaters with a capacity of over 10 liters, which can meet the requirements for multiple points of simultaneous water use.
B. During the summer, it is equivalent to diverting a part of the water, increasing the temperature of the inner wall of the heat exchanger, reducing the possibility of water vapour condensation in the flue gas, and ensuring the long-term safe use of the water heater.
What changes throughout the year is the warmth and warmth of the four seasons. What remains unchanged is our pursuit of comfortable bathing. By constantly upgrading our home hot water equipment, we no longer worry about the hot and cold water temperatures, allowing the four seasons to 'bath as spring'. , Enjoy the comfort and happiness brought by the bath and let our happiness in life rise to a higher level!