How to deal with the problem of which is better, fixed frequency or variable frequency?
Generally speaking, the price of variable frequency is higher than that of fixed frequency. If you want to recommend a variable frequency water heater, the variable frequency water heater has better wind pressure resistance and quieter effect; the fixed frequency water heater can tell the customer that the fixed frequency water heater always maintains the maximum speed and the exhaust gas is discharged faster. In addition, the variable frequency fan has a higher speed because of the speed. Constant changes will cause losses to the fan, and its service life will be affected.
Selection and comparison of variable frequency and fixed frequency water heaters
1. More energy saving
In order to ensure the reliability of the product device, the driver of the fixed frequency air energy water heater The capacity will leave a certain margin compared to the design load. Therefore, the unit will operate under a non-full load condition, and the excess torque increases the effective power consumption, thus causing a waste of electrical energy.
The variable frequency air energy water heater adjusts the speed through the frequency converter, which effectively reduces the running speed of the motor, thereby allowing the unit to reduce power consumption while maintaining constant voltage. Taking Haier's variable frequency air energy water heater as an example, it uses a special compressor for heat pumps, a DC variable frequency fan, a special frequency converter and a full-dimensional superconducting 3.0 water tank heat exchanger. With the cooperation of intelligence and efficiency, it improves the operating efficiency of the whole machine and is equipped with the best COP tracking technology detects changes in ambient temperature and water temperature in real time, automatically adjusts, and provides efficient heating, making the COP as high as 5.0 and saving more than 80% of power.
2. Achieve rapid heating
The variable frequency air energy water heater can increase the heat of the compression mechanism by adjusting the working efficiency of the compressor. When the compressor operates at high frequency, it can achieve rapid heating. Heating. Taking the inverter king as an example, in the standard heating mode, the compressor operates at a regular frequency; in the super energy-saving mode, the compressor operates at a low frequency to achieve the purpose of saving electricity and energy; in the quick heating mode, the compressor operates at a high frequency and turns on the electric auxiliary heat. , extremely fast heating, shortening the waiting time for heating water by 1/3
3. Achieve low-temperature operation
We all know that air-energy water heaters are subject to the air-energy heating principle, and the heating efficiency varies with the Decreases as the temperature drops. The variable frequency air-energy water heater realizes controllable compressor working efficiency. When it is in a low-temperature environment, the compressor can operate at high frequency, which greatly improves the heating efficiency of the air-energy water heater and ensures normal heating in low-temperature environments.
Take the variable frequency king as an example. It adopts an intelligent control full DC variable frequency heating system and is supported by R410a refrigerant, which effectively broadens the air energy low-temperature operating environment and can operate normally in the temperature range of -15℃~45℃. operation, and at low temperatures, the heating efficiency is increased by more than 50% compared to ordinary air energy.
4. Achieve low-voltage operation
When the air-energy water heater is started at full pressure, due to the starting torque requirement of the unit, it must absorb 4-7 times the rated current, and when the voltage is unstable In certain areas, the air-energy water heater may not be able to start, affecting normal heating.
The variable frequency air energy water heater is equipped with a soft start function. The starting current can start from 0, and the maximum value does not exceed the rated current. It not only achieves low-voltage operation, but also reduces the impact on the power grid and capacity requirements, and can Effectively extend the service life of equipment and valves and save equipment maintenance costs. So I recommend everyone to choose a variable frequency water heater because she wants to compare fixed frequency water heaters with many advantages
1. Unique water temperature variable frequency technology promotes blood circulation and strengthens body and beauty; three bathing modes of hot and cold water, three Hot and cold frequency conversion program/hot and cold alternating state;
2. LED function smart mode indication microcomputer fully automatic control, 20-minute scheduled shutdown; accidental flameout protection, water and gas linkage protection, antifreeze protection; low water pressure protection , Overvoltage protection, anti-dry burning protection.
3. Safety Even if it is damaged, it will not cause any harm to the human body. The leakage current after breaking does not exceed 10mA, which is far lower than the national standard; the leakage current of other heating elements reaches 30mA or more. The leakage current of the optical porcelain heating chip is less than 0.03mA when it is working normally, which is far less than the new national standard (GB4706.1-2005) that requires the leakage current value to be less than 0.75mA.
4. Energy-saving and original electromagnetic internal heating structure, rapid heating, no need to heat in advance, no need to consume electricity to keep warm, it can be used within 10 seconds after starting up, full utilization of electric energy, thermal efficiency is as high as over 99%, exceeding the industry The standard is nearly 20%. Compared with ordinary electric water heaters, it saves electricity and water by 20%-30%.
5. Convenient: When in use, the power is automatically turned on when the water is turned on, and the power is automatically turned off when the water is turned off. The body is small and exquisite, easy to install and easy to operate. It can provide water from multiple channels and will not form scale after long-term use. It adopts microcomputer control, digital display, eight-level power adjustment, constant water temperature, and can be used continuously without being limited by time and water volume.