Why do you need a heat pump in a dryer?

Dryers were previously divided into two types: condenser and vented. Progress continues, and more advanced machines equipped with heat pumps are now available on the market. According to the advertising, these models are several times more efficient than units with heating elements.

Let's explore how a heat pump in a dryer works. What are the advantages of models with modern heat pump technology? How do these advanced dryers work?

How does the new design dryer function?

Generally speaking, heat pump dryers combine the best features of condensation and ventilation dryers. Instead of expelling moist air back into the room, the unit directs it to a "heating station." The droplets settle and remain in the condensate collection compartment, while the dry air is returned to the drum.

Heat pump dryers use less energy than other models.

The increased energy efficiency of these dryers is explained quite simply. The unit takes one "portion" of air and reuses it several times. This reduces energy consumption by at least 30-40%.

Heat pump machines have in their design:

• evaporator (this is a special chamber where moisture condenses);
• directly a heat pump (the element reheats previously used air in order to put it into operation again);
• hair dryer (drives air currents inside the machine).

Heat pump washing machines operate on a fairly simple principle. The device performs a specific sequence of actions, which are repeated until the laundry in the drum is dry. During the cycle:

• the pump heats the air;
• the hair dryer sends hot air into the drum, to the clothes;
• moisture evaporates from the laundry;
• wet air is pumped out of the working chamber and directed to the evaporator;
• moisture condenses and collects in a special container;
• Dry air is directed into the pump, where it is reheated.

The cycle repeats. Once the sensors inside the drum detect the desired level of residual moisture in the laundry, the program will stop. Heat pump tumble dryers provide more gentle drying of items.

Why is drying more gentle? A heat pump heats the air to a maximum of 40 degrees Celsius, and that's the maximum temperature. This temperature won't harm even the most delicate items.

During condensation, the air cools, but only slightly. Therefore, the machine can reheat it to 40 degrees Celsius in a short time. This is why heat pump dryers have minimal energy consumption.

Thus, the main advantages of heat pump dryers can be considered:

• increased energy efficiency;
• more delicate drying of laundry.

The only drawback is the higher cost of devices with such a device. The price of improved dryers is at least 20-30 percent higher than that of machines with a heating element. However, over time, your electricity bills will be significantly lower.

What about a condensing apparatus?

Both heat pump and heating element units are condensing units. They only require power. A sewer connection is optional, as moisture is collected in a special container inside the machine. The user only needs to drain the container regularly.

The design of condensation dryers with a heating element includes:

• drum, motor and drive belt;
• heating element;
• fan (its function is to distribute air inside the machine);
• pump (for pumping condensed moisture);
• condensate collection tray.

The drive and motor spin the drum, evenly distributing hot air over the laundry. Generally, the operating algorithm of condensation dryers with heating elements is as follows:

• the machine uses a heating element to bring the air received from outside to the required temperature;
• the hair dryer moves hot air into the chamber, to the things;
• the evaporation process begins, the air becomes saturated with moisture;
• the pump pumps moist air into a container where condensation occurs;
• The dryer again takes in air from outside and heats it with a heating element.

Dryers with a heat pump draw in air from outside once, reusing it, while machines with a heating element draw in air several times, constantly consuming electricity to heat it.

In terms of available options, washing machines with heating elements have roughly the same options as dryers with heat pumps. The standard set of features includes:

• programs for drying different types of fabrics;
• drying by humidity level;
• express mode;
• delayed start timer;
• “Anti-crease” system;
• delicate drying option.

Some models have special drying programs:

• shoes;
• outerwear;
• bedding;
• children's toys, etc.

Condenser dryers with heating elements are relatively simple in design, making them cheaper than heat pump dryers. A significant drawback is their high energy consumption. This increased power consumption is due to the unit constantly drawing in a new supply of air and reheating it to the required temperature.

As for the maintenance of condensation machines, the user is required to:

• clean the lint filter in a timely manner;
• periodically drain the condensate from the container.

The dryer control panel usually has a full condensate tank indicator. Keep an eye on the light to avoid overflow. It's also recommended to clean the machine's heat exchanger every couple of months, as dust can accumulate there.

What type of equipment is better to buy?

We've explored the purpose of a dryer pump and its advantages. However, in other respects, heat pump dryers and dryers with heating elements are very similar. Therefore, when choosing a new "home assistant," in addition to the drying method, you should consider the following:

• Maximum load capacity. Ideally, the dryer should hold the same amount of laundry as the washing machine. This way, all clean items can be dried in one go.
• Software "stuffing." The range of modes will depend on the washing machine model. Modern dryers, both with a heating element and with a Heat Pump, have at least 10 algorithms, including intensive, gentle, and express drying. Some devices have special functions such as "Shoes," "Airing," "Toys," and others.
• A set of sensors. It's best if the machine has elements that monitor the moisture level of the laundry, indicators for the fullness of the condensate container, lint filter, etc.

There are no differences in installation between washing machines with heating elements and Heat Pump dryers. They only require a power outlet. Access to a drain or ventilation system is not required. These units can operate independently.

If necessary, condensation machines can be connected to the sewer system. This will allow moisture to drain directly into the drain. This is entirely at the user's discretion.

The main difference between machines with a heating element and Heat Pump dryers is the different energy efficiency class. Devices with a pump consume much less kilowatts than devices with a heating element. There is also a significant difference in the price of the models – the cost of heat pump units is higher.

Machines with a heat pump will help you save money during operation, while dryers with a heating element will save you money once you buy them.

What can we conclude? Condenser dryers with a heater are suitable for users looking for a budget model without sacrificing functionality or build quality. These dryers will dry clothes in the shortest possible time (as the air in the drum can reach temperatures of up to 60-70 degrees Celsius). However, it's important to understand that this won't save you money on your energy bills in the long run.

Among the popular condensing models with a heating element, the following can be distinguished:

• Hotpoint DSH 725 H;
• Weissgauff WD 6148 D;
• Gorenje DP7B.

Heat pump dryers are ideal for those who don't want to overspend on their appliance. These dryers consume minimal energy. They also don't heat up during operation, which is another advantage.

Another advantage of heat pump dryers is their gentle drying, with a maximum temperature of 40 degrees Celsius. These machines are suitable for drying even delicate clothes. Popular models include:

• Candy Smart Pro CSLO4 H7A2DE-07;
• Bosch WTW85540EU;
• Weissgauff WD 599 DC.

Thus, both condenser dryers with heating elements and heat pump models are capable of effectively drying clothes. The choice of dryer will depend on the preferences and budget of each individual buyer. It's impossible to say that one dryer is definitively inferior. Each type has its advantages.

   

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