Air conditioner cooling or heating, which is more electricity intensive?

The cooling and heating principle of air conditioners.

Air conditioners are also a hot product in summer, but unlike refrigerators, refrigerators are used all year round, but air conditioners are mostly used in summer and occasionally in winter, and they are used much less than refrigerators. However, the sudden consumption of air conditioning products is very powerful, and when it is hot, there will be many friends who can't stand the heat, and queue up to buy air conditioners in the mall, and the enthusiasm for buying is much higher than that of refrigerators.

In terms of basic principle, air conditioners are similar to refrigerators, both rely on compressors to compress refrigerants, cycle heat release, and absorb heat. It's just that the power of the air conditioner is much larger than that of the refrigerator, at least there is a difference of 3-4 times, so the volume of the air conditioner is much larger than the refrigeration part of the refrigerator, and the noise is not on an order of magnitude.

In addition to cooling, dual-purpose air conditioners can also produce heat. In fact, to put it simply, heating is to reverse the refrigeration process, of course, it is not so easy to reverse it, and it needs to add some additional components, and it will affect the efficiency of the air conditioner. Since the principle of air conditioning is to move heat rather than generate heat, air conditioning has the highest efficiency among all heating products, consuming 1000 watts of electricity, which can produce about 3000 watts of thermal energy, which is power saving and has a relatively good effect.

However, there is a relatively big defect in the heating of the air conditioner, below 0 degrees, the heating capacity of the air conditioner will be greatly reduced, and the ordinary air conditioner will basically stop working after minus 5 degrees. The inverter air conditioner is slightly better, it can work normally within minus 15 degrees, and no matter how low it is, there is nothing that can be done. Therefore, some air conditioners add electric heating assistance to the heating, that is, they are equipped with electric heating wires.

Just like some heaters. In this way, the heating effect will be better.

Air conditioners that are heated by ordinary heating methods are called heat pump type, and those with heating wires are called electric heating auxiliary types. Although the effect of the electric heating auxiliary type is better than that of the simple heat pump type, the energy efficiency ratio of the heating wire can only reach 1:1, so its power consumption is also huge.

In order to save electricity consumption, the general air conditioner will make the power of the heating wire very small, basically only 10% of its heating capacity. In this way, if the air conditioning compressor cannot be started, the electric auxiliary heating will really become a decoration, so most imported brand air conditioners do not put this function on their air conditioners.

In general, it is necessary to save electricity for heating.

Both cooling and heating are more power-consuming.

Air conditioning heating consumes more electricity than refrigeration, because the power of the air conditioning heat pump itself is greater than that of refrigeration, and the power consumption of the air conditioner will continue to increase after turning on the radiant mode during heating. If you want to save electricity in the air conditioner, you should always clean the filter often, when the filter is too dirtyHot airWhen it can't be blown out, the current will be on the high side.

Air conditioning and heating are several times more expensive than refrigeration

1. The main thing is to compare the power consumption of the two, but there is no specific relationship between the two, mainly depending on the use environment, usually the power consumption of heating is higher than that of refrigeration. If you take a certain brand of air conditioner as an example, the number of horses is horses, which is wall-mounted, and the refrigeration capacity.

It's about 3500 watts, and the power can reach 1000 watts, energy efficiency ratio.

Probably around.

2. If the heating mode is adjusted, its heating capacity is 3800 watts, the power is 1120 watts, and the energy efficiency ratio is. By comparing these data, it can be concluded that the heating mode consumes more electricity than the cooling mode.

3. The main reason is that if the heating is adjusted, many air conditioners now have the function of auxiliary heating, which will speed up the operation of the compressor, and the power consumption of electric auxiliary heating is more. In winter, when the weather is cold, some air conditioners will have frost problems and may not be able to operate. At this time, the air conditioner will also consume a lot of electricity to defrost, which will undoubtedly increase energy consumption.

Many people love and hate air conditioning, and although we can't refuse the comfort that air conditioning brings us, the high electricity bills that come with turning on air conditioning in summer are very distressing. At present, most air conditioners can be used for cooling and heating, is it high power consumption for refrigeration or heating? Let me show you how.

First of all, let's understand how air conditioners work in cooling and heating. During refrigeration, the gaseous refrigerant in the air conditioner will be compressed through the compressor to become a high-temperature and high-pressure gas, and this part of the gas will be sent to the condenser and then be appropriately expanded through the expansion valve, which will dissipate part of the heat, that is, the hot air blown out of the air conditioner. In this process, the high temperature and high pressure refrigerant will drop sharply because the space becomes larger, and the temperature and pressure will drop sharply, absorbing a large amount of heat, and the temperature of the evaporator will be reduced at this time, which is why the air blown out of the air conditioner is cold air.

In fact, from a macroscopic point of view, that is, the liquefaction heat release and vaporization heat absorption that we have learned in physics textbooks.

During heating, the refrigerant in the air conditioner will still be compressed by the compressor to become a high-temperature and high-pressure gas, and will be fed into the heat exchanger of the air conditioner indoor unit. In this process, the gas liquefies and releases heat, heating the air in the room.

Next, let's explain how the electricity consumed by the air conditioner comes from. For air conditioners, the highest power consumption is actually the compressor, which actually has the same power for cooling and heating. However, in terms of efficiency, air conditioners are more efficient at generating cold air than hot air, so from this point of view, air conditioners consume more electricity to heat than to cool.

Those who want to use air conditioning to keep out the cold throughout the winter will have to pay an additional expense.

Both cooling and heating are more power-consuming.

Saves electricity when cooling. Take horsepower as an example, refrigeration, with a power of 1200 watts, produces 3500 watts of cold capacity; Heating, power 1350 watts, generating 4300 watts of heat.

When heating, the power of the compressor is 1350W, so the power consumption during heating is about about one degree, and the power consumption is about one degree during cooling. Therefore, heating is more expensive than cooling. Some are charged with additional heat, and the heater power is about 800W, which consumes more electricity for heating.

Friend, this problem is like this, refrigeration is the work of the air conditioning compressor and fan, and heating is the work of the air conditioning heating components and fans, but the capacity power of the air conditioning heating components is much larger than the capacity power of the air conditioning compressor, so the heating of the air conditioner is far more expensive than refrigeration.

In general, air conditioning and heating are more power-intensive, depending on the actual indoor temperature.

Since the motor power is constant, in an absolute sense, the power consumption should be the same, an important parameter to measure the working capacity of the air conditioner is the COP value, when consuming 1kw of electricity, the energy consumption rate is the cold energy I can generate.

The heating capacity of the air conditioner is worse, and the cooling COP value is greater than the heating COP value under the rated conditions (usually the rated conditions are selected for easy comparison). With the same current loss of 1 degree, the cooling capacity is greater than the heating capacity, or conversely, more electricity is consumed in heating with the same cooling and heating amount.

Take Hisense air conditioner as an example,Air conditioning heating is more expensive than refrigeration。

Because the general air conditioning power consumption refers to the power consumption of the motor that drives the compressor to run, because the motor power is unchanged, so in an absolute sense, the power consumption should be the same, but the actual point is a little more complicated, an important parameter to measure the working capacity of the air conditioner is the COP value, which is often said to be the energy consumption ratio.

In the case of refrigeration, the heat exchange selection of the condenser is generally equal to the sum of the refrigeration capacity and the heat loss of the compressor, while the heat exchange of the evaporator is equal to the refrigeration capacity of the unit, that is to say, the general condenser is larger than the evaporator, so the heating capacity of the air conditioner is poorer. That is to say, under the additional working conditions (generally the additional working conditions should be selected for easy comparison), the refrigeration COP value is greater than the heating COP value.

Compared with the refrigeration and heating of air conditioners, heating is more electricity-intensive, and the power of heating is greater than that of refrigeration.

The power consumption of air conditioning cooling and heating should also take into account the impact of the outdoor environment on air conditioning when it is actually used

Summer; When the outdoor temperature is too high, the heat dissipation effect of the air conditioner is not good, and the overall operation efficiency of the air conditioner will be reduced, that is, it will consume more electricity. Winter; When the outdoor temperature is too low, the outdoor unit of the air conditioner will be frosted, which will affect the heat absorption, and the heating efficiency will be lower; If the outdoor temperature is lower, the outdoor unit of the air conditioner may freeze, and the defrosting time of the air conditioner may be longer, which may have a greater impact on efficiency. At this time, it is recommended to turn on the electric auxiliary heating to ensure the heating effect of the room.

Because of the same heat exchange, if you set the room temperature at 20 rooms in winter, the outdoor temperature is -10 degrees, and the temperature difference is 30 degrees; In the summer, you set 25 degrees indoors and 40 degrees outdoors, with a temperature difference of 15 degrees. For similar equipment, the attenuation of the temperature difference between 15 and 30 degrees must be different, and it cannot achieve such a high energy efficiency ratio when heating.

To sum up, if the air conditioner does not turn on the power auxiliary when heating, it is similar to the power consumption during refrigeration, and it may be more energy-saving if the outdoor environment is good; If the electric auxiliary heat is turned on, it will consume electricity compared to cooling in summer.

In general, the cooling mode of an air conditioner consumes more electricity than the heating mode. This is because during the cooling process, the air conditioner needs to remove the heat from the room, while during the heating process, the air conditioner only needs to absorb the heat from the outside. Refrigeration requires more energy to enable this process.

Specifically, the refrigeration mode of an air conditioner requires the use of components such as compressors and condensers, as well as additional electricity, to run these devices. The heating mode, on the other hand, only needs to run a compressor and evaporator, which consumes less energy.

However, the power consumption of an air conditioner can also be affected by other factors such as indoor temperature setting, outdoor temperature, energy efficiency of the air conditioner, etc. Therefore, the specific power consumption will vary depending on the type of air conditioner, the use environment and usage habits.

In order to save energy and reduce the power consumption of your air conditioner, you can consider the following measures:

Set the right temperature: Try to keep the room temperature within a comfortable range and avoid setting the temperature too low or too high.

Use energy-saving mode: Many air conditioners are equipped with energy-saving mode, which can effectively reduce energy consumption. Using these modes can help save energy.

Regular maintenance and cleaning of the air conditioner: Regularly clean the filter screen and heat exchanger of the air conditioner to ensure the normal operation and efficient operation of the source or air conditioner.

Consider the energy efficiency level of the air conditioner: Purchasing an air conditioner with a high energy efficiency rating can reduce energy consumption and electricity bills in long-term use.

After the temperature of the heating system is raised, the high wind speed promotes the circulation of hot air in the room, which can avoid excessive temperature difference in the room caused by local heating, and avoid the uncomfortable feeling of the human body.

Generally, it includes cold source heat source equipment, cold and hot medium transmission and distribution system, terminal device and other major parts and other auxiliary equipment. It mainly includes refrigeration hosts, pumps, fans and piping systems. The terminal device is responsible for using the cold and heat from the transmission and distribution to specifically treat the air state and make the air parameters of the target environment meet certain requirements.

Does the air conditioner consume more electricity for cooling or heating?

1: In winter, the temperature difference between the inside and outside is large. In winter, the temperature outside is very low, especially in the north, where it can reach more than minus 10 degrees, and in the south, it can reach minus 3 to 4 degrees at its coldest time.

In order for the room to be warm and cozy, at least 25 degrees is required. That is, at this time, using air conditioners for heating, air conditioners need to produce more heat transfer. If you want to transfer more heat, you have to use more electricity.

In summer, when the outdoor temperature is around 30 degrees Celsius and the indoor temperature reaches 25 degrees, it will feel very cool, so the heat that needs to be transferred is much less than in winter.

When the outside temperature is too low in winter, the heating of the air conditioner will be affected to a certain extent, and the work efficiency is not so high. If you want to heat up quickly, then there is an auxiliary electric heating function in the air conditioner, which is actually the process of generating heat through the hair. That is to say, the air conditioner has another power-consuming function in the heating process.

Under normal circumstances, the power of this function will be around 1 kilowatt, and the rule for air conditioning is about 2 kilowatts. This function is obviously not used in the summer, so heating in the winter is definitely more power-intensive. And this function needs to run at the same time as the air conditioner, that is to say, the air conditioner consumes electricity while heating, and the wires must be heated at the same time as heating, and in this process, there are two parts that will increase the consumption of electrical energy.

Does the air conditioner consume more electricity for cooling or heating?

When the air conditioner is heating, it consumes more electricity. During the summer months, when the air conditioner is turned on for a while, it can be turned off, but the temperature can be kept cooler. In winter, when the air conditioner is turned on, the temperature will be higher than the original indoor temperature.

But once the air conditioner is turned off, the temperature in the room will feel lowered. Therefore, the air conditioner needs to keep the house at the set temperature, and the energy consumption of heating will be greater than the energy consumption of cooling.

Is the power consumption of 30 degrees Celsius the same when the Gree air conditioner is heating?

Of course, if the temperature is set at 30 degrees, the compressor will work non-stop, and of course the power consumption will be much greater. Set the temperature to 20 degrees, when the indoor temperature reaches the set temperature, the outdoor unit of the air conditioner will stop, at this time there is only the indoor fan working unit, its power consumption is very small, roughly okay, so the power consumption is much smaller when set to 20 degrees. In general, the smaller the temperature difference between indoor and outdoor, the smaller the power consumption, and the power consumption can increase by about 5-10% for each degree increase in temperature difference.

Power savings when cooling. For example, the refrigeration power is 1200 watts, which produces a cooling capacity of 3500 watts; The heating power is 1350 watts, producing 4300 watts of heat. The power of the compressor is 1350W when heating, so the power consumption is about degrees, and the power consumption is about degrees when cooling.