Hello fellow veterans, I believe many people don’t know much about what is the normal body temperature. Therefore, today I will share with you about what is the normal body temperature? As well as the normal knowledge about the temperature difference between the heating water inlet and return water, I hope it can help everyone and solve some of your confusions. Let’s take a look below!
Contents of this article
- How much heat is normal for wires
- What is the indoor temperature in Xinjiang in winter
- In what range is the motor temperature generally suitable
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- What is the normal temperature of the brake pads
- Heating water inlet and return water temperature How much difference is normal?
- Is it normal for the heating water temperature to be 40 degrees?
1. How much heat is considered normal for wires
1. Rubber insulated wires, maximum working temperature 65°, insulated PVC material, It cannot exceed 70 degrees. BVBVR Generally, the insulation of household wires is made of PVC material, and the temperature usually cannot exceed 70 degrees. In fact, in our actual use, as long as the wire is in use and there is no obvious heat when you feel it with your hands, it is normal. If it feels obviously hot, it means there is overcurrent and there is a hidden danger.
2. What is the indoor temperature in Xinjiang in winter
In the 1980s , my country stipulates that the indoor heating standard is 18±2℃, and in 2002 it was 16℃-24℃. The indoor temperature of the main rooms of civil buildings is above 16℃ as the qualified temperature, and 18℃ is the standard room temperature. Xinjiang winter indoor temperature Since September 1, 2013, the indoor heating temperature standard for Urumqi residents has been adjusted from 18°C to 20°C. But it is not the same in other places in Xinjiang. The maximum temperature difference does not exceed about 3℃.
3. What is the generally appropriate range of motor temperature?
1. What is the generally appropriate range of motor temperature?
2. When the motor is under rated load, the casingThe temperature is generally not higher than 80 degrees, normally around 60 or 70 degrees (except for water pump motors).
3. (1) The temperature rise of the core in contact with the winding (thermometer method) should not exceed the temperature rise limit of the insulation of the winding in contact (resistance method). That is, Class A is 60℃, Class E is 75℃, Class B is 80℃, Class F is 100℃, and Class H is 125℃.
4. (2) The temperature of rolling bearings should not exceed 95°C, and the temperature of sliding bearings should not exceed 80°C. Because the temperature is too high, the oil quality will change and the oil film will be destroyed.
5. (3) In practice, the temperature of the casing is often based on whether it is not hot to the touch.
6. (4) The stray loss on the surface of the squirrel cage rotor is very large and the temperature is high. Generally, it is limited to the extent that it does not endanger the adjacent insulation. It can be estimated by applying irreversible color-changing paint in advance.
7. Because the stator of large motors is generally equipped with a temperature measuring device. A mercury thermometer or resistance thermometer is installed at the air inlet and outlet, so it is easier to detect overheating. For small and medium-sized motors, there is generally no temperature measuring device, and the operator has to check it with his hands. If his hands feel burning, he can further measure with an instrument. There are many reasons for the motor to heat up. If the above conditions do not occur but the temperature still rises, it is necessary to ask a professional to repair it.
4. What is the normal temperature of the brake pads
1. Normal Under normal circumstances, around 50 degrees is normal.
2. Mechanical energy is converted into thermal energy, and the thermal energy is released in the brake disc, brake pads and tires to generate assistance, which has achieved the purpose of parking. Therefore, it is normal for the temperature to increase as the brakes are applied deeper.
3. If the temperature is too high, the braking performance will decrease, the friction will decrease, and the braking performance will of course decrease.
4. Keep your full attention at all times, keep an eye on the six directions, stop the gas and slow down in advance if you find problems, and decide whether to apply the brakes according to changes in the situation. Doing so will save gas and extend the life of the brake pads.
5. What is the normal temperature difference between the heating inlet and return water
The temperature difference is in the range of 5 to 10 degreesnormal. Usually the inlet air temperature of floor heating is about 50 degrees, and the return air temperature is about 40 degrees. In the conventional design of the inlet and return water temperatures of floor heating, the inlet water temperature is 55 degrees Celsius, the return water temperature is 45 degrees Celsius, and the temperature difference is 10 degrees Celsius. The temperature difference between them should not exceed 10 degrees Celsius. If the temperature difference between the inlet and return water is too large, it will affect the heating effect of central heating. When using floor heating for heating, the indoor temperature can be set at 20 to 24 degrees Celsius. The room insulation effect is average, and the floor heating temperature can be Set it higher.
6. Is the heating water temperature of 40 degrees normal?
1. Every The situation in each region is different, so the heating water temperature will also be different. The specific temperature is subject to actual conditions. Usually, the water supply temperature of a boiler room heated by a zone radiator is generally 90 degrees, and the temperature difference between the supply and return water is generally about 20 degrees, that is, the temperature on the return water side is about 70 degrees (usually between 65 degrees and 70 degrees).
2. The upper limit of the water temperature for the boiler room to provide floor heating to the community is 60 degrees, and the return water temperature is between 35 degrees and 40 degrees. The temperature of the hot circulating water is generally between the supply temperature and the return water temperature. The temperature depends on the distance between the pipeline and the hot water outlet of the boiler room. As long as the temperature does not exceed 90 degrees, there is generally no big problem.
END, this article ends here. If it can help everyone, please pay attention to this site!
