Fresh Air Series

The working principle behind the recuperation fresh air heat pump is explained in this article and then examines the different uses system that such units apply in heat recovery systems. Recuperation air heat pumps are designed to draw in cool (freezing) air outside of an air conditioning system and draw it back inside the system. The unit draws in cool air and then throws it back into the system as warm air is forced through a cooling fan. These units have been designed to make use of the natural heat from the air in order to provide comfort. They use a small amount of electricity to do this and are quite cost effective as well. Some of them are built with a dual function of drawing in and re-capturing heat from outside the system as needed.


Recuperation fresh air heat pumps ventilation system is very similar to a typical residential or commercial HVAC system. It requires the installation of a system for the venting of the waste gases produced by the heating and cooling system. Some types of recuperation heat pumps have the option of a two-pipe system, where the intake pipe and the discharge pipe are located on the same floor or cabinet for easy maintenance and cleaning.


Recuperation fresh air heat pump systems utilize a heat exchanger to move hot air outside of the system while keeping cold air inside. The heat exchanger is generally located in a location where the temperatures are normally changing, such as in the garage. Some heat exchangers are placed in the crawl space under the house, so that indoor air is directed to the crawl space and out through an exit duct in the crawl space.


These systems are used to provide a continuous source of cooling for small offices, homes, and other locations that do not have central cooling. They provide an economical solution for businesses and homes that need a cooling service at all times, but are limited by the availability of a central cooling source. They can also be used to provide a consistent cooling throughout a building. Heat pumps that use a fresh air delivery system are more energy efficient than systems that use a traditional cooling tower.


In order for an air conditioner to work effectively, both incoming and outgoing air temperatures must be at the correct levels. A heat pump accomplishes this task by circulating air through the air ducts, eliminating any hot air from reaching the interior of the building. Air is then circulated through the system, where it heats before returning through the existing heat exchange. This energy saving heat recovery system reduces the energy required for cooling and ensures that the interior temperature remains constant.


Fresh air compressors use a heat exchanger design. The heat exchanger reduces air infiltration and air evaporation, while at the same time providing excellent pressure relief. The result is exceptional air cleanness and temperature control for the entire building.

Fresh Air Energy Recovery Ventilation
We are an Air Ventilator Manufacturer to create constant temperature/humidity/oxygen/purification for you and your family a comfortable home environment! Joyclima company is a professional air ventilation supplier!
Fresh air energy recovery ventilation
Fresh air energy recovery ventilation is an expertise ventilation device that has air purification outlet exhaust air, inlet fresh air, etc functions. Meanwhile, it can proceed highly efficient heat recovery through its integrated heat exchange box.adopt brand new EC fan motor, high steadiness, low noise,energy-saving up to 40%.
New generation energy exchange box
use polymer rubber& plastic cotton for inside sealing and outside denoise
triple purifying, high-level filter screen above 99% purifying rate at one time for PM2.5 monoblock ultra-thin design, ceiling type installation small space occupation, no effect to the room decoration.
Air ventilation & high efficient purification
Each device is equipped with two EC fan motors, which can inhale the out fresh air into indoor space through a filter screen, remove dust, HCHO, PM2.5, etc harmful materials, above 99% efficiency to keep your indoor space clean.
Highly efficient energy recovery
Using the third generation heat exchange box, which produces by a complex combined high-performance ABS with nanometre film that rises the energy exchange rates, facing air velocity, zero leakage figure to a high level.
EC fan motor
EC fan motor has integrated advanced copper and imported bearing heating protecting function, form a strong airflow instantly with higher performance of air exchange, ultra-high wind pressure, longer transported distance, no vibration balance 0.1q. for lower noise.
Ultra-low noise
Adopt brand new EC fan motor and inner air route design inside construct more scientific; polymer rubber& plastic cotton for inside sealing, outside denoise, good ventilation great performance, resulting in more brilliant mute capacity.
Convenient installation and maintenance
Celling type installation, don't occupy the limited space, support inverted installation, apply for villa, office, hotel, restaurant, supermarket, gym, etc.
Fresh Air Dehumidifier Product Advantages
Cyclic dehumidification & fresh air dehumidification double-cycle mode
The first in China has applied for a patent; one machine has dehumidification, fresh air purification, room temperature adjustment multiple functions
Inner loop mode In the rainy season, the indoor humidity is high, the unit adopts the “internal circulation dehumidification” mode, the dehumidifier system is activated, the indoor air is condensed and reheated, the indoor humidity is quickly removed, the room is dry and fresh, and the wall is prevented. Mildews such as noodles, furniture, clothing, cotton textiles.
Fresh air comfort mode In non-wet weather, the indoor humidity is not high, the electric reversing bellows moves, the “outer circulation fresh air” mode is activated. After the fresh air conditioning system is put into operation, the outdoor fresh air is purified and temperature adjusted and then sent into the room.. At the same time, the air conditioning system is used to efficiently recover the energy loss of the exhaust air, thereby achieving an energy-saving, healthy and comfortable living environment.
Professional silent DC fan, energy saving more than 40%. The silent DC fan is used for efficient and stable operation and ultra-low noise, which brings a quieter and more comfortable life to the family. Compared with the traditional fan, it can save more than 40% energy under the same conditions, which is economical;
Intelligent learning, remote control, real-time monitoring. The built-in monitoring system, real-time monitoring of indoor air quality, equipped with liquid crystal display, air quality at a glance; automatic monitoring mode, intelligent monitoring and adjustment of air quality; intelligent learning function, APP remote viewing and control;
Snap-on design, disassembly and repair & filter screen is more convenient. Reasonable layout, more compact structure.
I. The dehumidifier of our company is a dehumidifier with fresh air function, which will automatically control whether to send fresh air according to indoor humidity and carbon dioxide concentration and PM2.5 concentration;
II. Second, there are two types of fresh air dehumidifiers:
1. The first type is a two-way flow fresh air dehumidifier. The two-way flow fresh air dehumidifier has an electric reversing bellow (company patent). The machine has multiple functions of dehumidification, fresh air purification, and room temperature adjustment.
2. The second type is a one-way flow fresh air dehumidifier, which is equivalent to adding a new air damper on the basis of the dehumidifier. When the indoor carbon dioxide concentration or PM2.5 concentration exceeds the set value, the fresh air damper opens and goes indoors. Sending fresh air, this time has a new air purification function. When the indoor carbon dioxide concentration and the PM2.5 concentration are simultaneously lower than the set value, the fresh air damper is closed, and this is a conventional dehumidifier.

How should we choose the right fresh air system for the house?

Let me live in your house
Why do we need a fresh air system? The sealing performance of modern buildings is getting better and better, which leads to the difficult circulation of indoor and outdoor air. For a long time, it will affect the indoor air quality and cause serious impact on the health of indoor personnel. So if one of the following conditions is met, we suggest that the building fresh air system should be set:
(1) when the building needs to use outdoor air ventilation to dilute the indoor air pollution concentration of all kinds, so that it does not exceed the value specified in the health standards; 
(2) the use of heating and ventilation, air conditioning system can not meet the requirements of human comfort, equipment, technology and other indoor air quality;
(3) has a significant effect on improving work efficiency and economic benefits;
(4) is beneficial to physical health, or has an effect on promoting rehabilitation.
What are the benefits of installing a fresh air system?
1, ventilation, provide fresh air, by opening the fresh air system, the fan continues to provide fresh air for indoor people can enjoy the fresh air of nature in the room without opening the window, to meet the health needs of the human body.
2. Purify the air. For the haze weather and dust weather that sometimes appear in the current environment, the use of fresh air system can effectively purify the pollutants in the indoor air, and discharge the dirty air indoors in time, so as to create a healthy and energy saving environment.
3. Energy recovery, through the heat exchange core with the fresh air system, can make the dirty indoor air discharged outdoors at the same time, the energy in the discharged air and used for fresh air, so as to reduce the load of the room air conditioning.

The new air volume is one of the important factors affecting the air conditioning load. If the new air volume is less, the role of the fresh air system will not be obvious, and even the indoor health conditions will deteriorate. The new air volume is much more, which will increase the air conditioning load and cause a waste of energy.
Then the standard of new air volume for different types of buildings can be calculated according to the number of air changes or the density of personnel. Take the maximum between the two as the principle to match the corresponding air supply model.

I. Standard for Fresh air volume of different types of buildings (Fresh air volume: m3/h per person)

There are three types of air conditioning systems commonly used in buildings:

1. All air system: the indoor air conditioning load is all the air burden processed by the air conditioning system. It is suitable for large building space, indoor temperature, humidity and cleanliness control requirements are strict, large load or latent heat load places. In this air conditioning system, the air is processed centrally by the air conditioning host, and there is no need to install fresh air system additionally.

2, air-water system: indoor air conditioning load has air and water burden. It is suitable for indoor temperature, humidity control requirements of the general occasions, low layer height occasions, cold load wet load is small occasions.

This air conditioning system does not introduce outdoor fresh air, so it is necessary to use another fresh air system to feed fresh air into the room. That is, the combination of fan coil + new fan.

3, multi-line air conditioning system (VRV) : air conditioning room load by the refrigerant directly burden. It is suitable for air conditioning room layout scattered, flexible control of air conditioning use time requirements. This air conditioning system does not introduce outdoor fresh air, so it is necessary to use another fresh air system to feed fresh air into the room. Namely the combination of multi - line system and fresh air system.


Differences and advantages and disadvantages of sensible heat exchanger HRV and total heat exchanger ERV.

The full heat exchanger can realize the exchange of heat and humidity; Sensible heat exchangers can only exchange heat, not humidity. The difference between total heat exchanger and sensible heat exchanger mainly lies in the filter element, the filter element of total heat exchanger is paper core, the filter element of sensible heat exchanger is aluminum foil. The aluminum core of sensible heat exchanger is corrosion resistant, easy to wash, and has long service life and crush resistance. After the paper core of the full heat exchanger is corroded by moisture and dust in the air, the vent is blocked and can not be cleaned, which easily leads to poor ventilation effect.








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