industrial thermal emission heat recovery & reuse system
Industrial thermal emission heat recovery & reuse system
Wind Generator Air to Air Indirect Cooling System
Wind Generator Air to Air Indirect Cooling System
Fresh air system for public places
Fresh air system for public places
Purify air conditioning fresh air system
Purify air conditioning fresh air system
Large-scale scientific breeding air conditioning and ventilation system With the improvement of mode
Large-scale scientific breeding air conditioning and ventilation system With the improvement of mode
Indirect Evaporative Cooling Air-conditioning System
Indirect Evaporative Cooling Air-conditioning System

Zibo QIYU Air-condition Energy Recovery Equipment Co.,Ltd.

Zibo QIYU Air-condition Energy Recovery Equipment Co.,Ltd. is one of the best professional manufacturing company specialized for indoor air quality research and related product development based on the needs of the times, combined with advanced technologies in China and abroad. At present, our company has set up branches in Beijing, Guangzhou, Shanghai, Chongqing, Xian and other major cities. With the continuous improvement of product research and development, international cooperation has becom…

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Air comfort is different: central air conditioning is more comfortable than ordinary air conditioning. Air comfort is related to how different types of air conditioners work. Central air conditioning works by compressing refrigerant into liquid through a compressor, which then sends it to an evaporator, where the cold water in it is exchanged for heat. After freezing, the frozen water is pumped to the cooling coil of fan outlet to keep warm in winter and cool down in summer. But ordinary air conditioners work by using freon to convert the gas into liquid to release a lot of heat, and from liquid to gas to absorb a lot of heat. Therefore, the two different types of air conditioning work in different ways, from the comfort point of view, the central air conditioning has more advantages!Buying costs vary: central air conditioning costs slightly more than regular air conditioning. Let’s take Shijiazhuang for example. The owner bought the central air-conditioned space of the house with the combination of one drag and four, which is used for living room, master bedroom, north bedroom, children room and so on. The total cost of central air conditioning plus labor is about 25,000 yuan. If you consider split air conditioning in your home, choose four. Normally, the air conditioning price of the sitting room is higher, but total price cannot exceed 20 thousand yuan, because this central air conditioning price still is taller than common air conditioning a few.Space saving: the use of central air conditioning is better than ordinary air conditioning. As we all know, the central air conditioner is installed on the suspended ceiling, which does not occupy the ground space and is both beautiful and fashionable. However, the thickness of Haier’s central air conditioner is 180MM, the thinest in the industry, and it does not feel depressed even after the ceiling is hoisted. So to the owner that has requirement to condole top thickness, Haier central air conditioning is a good choice. And common air conditioning is an independent organization, especially sitting room ark machine, after installation is finished, can be placed in sitting room only one corner, can take up the space of about 1㎡, to present high house price for, apparent sitting room ark machine takes up a place too, not very appropriate!Decoration grade is different: the installation grade of central air conditioning is higher than that of ordinary air conditioning. For central air conditioning, the ceiling is shielded and hidden after completion, and only the air outlet, return air outlet and access port need to be retained in the later stage. Integrated with the ceiling, it is very beautiful and fashionable. And the common air conditioning that puts in the sitting room is wasted space not only, if the sitting room area of the building is bigger, choose bigger air conditioning, the visit of relative friend can appear on the vision antipathetic, and comfortable level is insufficient still.In terms of air comfort, purchase cost, space saving and decoration grade, the advantages of central air conditioning are obviously higher than ordinary air conditioning.
The 2024 Beijing International Wind Energy Conference and Exhibition will be held from October 16-18, 2024 at the China International Exhibition Center (Shunyi Hall). The company participated in the exhibition and established long-term cooperative relationships with multiple domestic wind power companies in the fields of onshore and offshore wind power.
It is suggested to install central fresh air system before decoration, and ensure indoor air quality through reasonable pipe supply. After decoration, it is recommended that you choose to install a ductless fresh air system and choose wall-mounted or cabinet fresh air system according to your needs. Recommend a plan before decoration Before decorating, choose fresh air option 1 Installation advice: The fresh air discharged from the ceiling is the same as the central air conditioner, which can be hidden in the ceiling, beautiful and fashionable, reasonable air supply, and ensure the indoor air quality. Choose fresh air option 2 before decorating Installation suggestion: for the room with limited ceiling height, you can choose fresh air system of cabinet type pipe. Fresh air can be installed in the balcony and other places, indoor air duct can be carried out local suspended ceiling. Beautiful and fashionable, reasonable air distribution, to ensure indoor air quality.
The air purifier only recycles indoor air and does not introduce fresh air from the outside, which is more uncomfortable than the new air system. In order to ensure the indoor air quality, the fresh air unit is equipped with indoor space centralized fresh air system, and the main unit supply air and process fresh air are called fresh air unit. The fresh air unit generally does not bear the heat and humidity load of the air conditioning area, and its main function is to supply air. Of course, the ideal supply air temperature and humidity is constant, so the fresh air unit generally controls the supply air temperature and humidity. The air purifier is suitable for the living room which needs to purify the air in a short time. It has many purchase channels, no need for professional construction and installation, plug and play and other advantages. Fresh air, “fresh air system”, as the name implies, refers to the building mechanical and electrical systems that provide fresh air for the living room. The fresh air unit of the heater mainly deals with the outdoor air, and the air conditioner mainly deals with the air treated by the fresh air fan. However, the fresh air fan can have return air or fresh air, which is to better adjust the parameters such as temperature and humidity. It is composed of central fresh air fan (or unit, including air filtration and purification, heating or cooling, humidification or dehumidification and other air treatment functions), ventilation duct and tuyere (inlet and return air). The wind is composed of three parts, which can exhaust the indoor dirty air to the outside and filter the outdoor fresh air to the inside. Air purifier, also known as “air purifier”, refers to electronic products that can filter, absorb or decompose various air pollutants and improve air cleanliness. Its working principle is to circulate the indoor air through the fan, and then purify the air with a filter that filters out pollutants. Introduce fresh air into indoor air, add fresh air to indoor air, supplement oxygen, improve the comfort of living space and reduce the content of infectious substances in the air. Its advantage is that it will not mix fresh air and dirty air, and the noise is relatively small when used. The functional space of fresh air system usually includes bedroom, living room, etc., but each space needs to be installed with separate equipment. The air purifier only recycles indoor air and does not introduce fresh air from the outside, which is more uncomfortable than the new air system. In addition, some air purifiers are very noisy, it is easy to affect people’s sleep.
The equipment selection steps of fresh air unit are as follows: 1. Select the form of the new fan according to the installation Settings; 2. Determine the design conditions for cooling capacity and heat generation; 3. When selecting the air volume and wind pressure of the equipment, the principle shall not be less than the design value; 4. In principle, fresh air units are only responsible for the amount of fresh air required for a floor (definition: volume of air per unit time). Suggestions on safe operation of fresh air units 1, the construction unit in winter construction of the fresh air unit of the anti-freezing problem is serious, pay attention to all air-conditioning equipment and pipeline anti-freezing. The key point of relative humidity control of fresh air unit is the location of humidity sensor or the selection of control parameters, which is related to the source and control mode of humidification. Pay attention to the outdoor air temperature during piping pressure test flushing, and ensure the complete system drainage after flushing and no safety hazards. The use of fresh air units for temporary heating should also be inspected and accepted in accordance with the normal procedures. If there is no automatic control measures and special management, it is not recommended to use fresh air air-conditioning equipment for temporary heating. 2. In the design of fresh air units, an effective anti-freeze automatic control interlock monitoring device must be set up. Fan operation, must first guarantee the rated flow of heater, when the water temperature too low or the water flow through the hour should call the police, timely closing blower and air insulation, air valve does not provide adequate protection, fresh air units in fact only semi-finished products, in the cold region winter running without security, not optional “duty”. 3. Establish and improve the operation management system. The fresh air unit that stops at night should also use constant flow rate or temperature controller to automatically control the water valve to open or set up electric heating device to ensure the temperature of the fresh air unit heater. During the operation of fresh air units in winter, weather changes should be checked regularly. In cold weather, the commissioning and maintenance of the air-conditioning system should not be arranged to ensure the safe operation of the air-conditioning water system.
Fresh air must be introduced in order to maintain comfortable indoor ventilation and ensure people’s health, and proper room temperature control is also important. The introduction of traditional fresh air into the system will greatly increase the load of air conditioning, and the exhaust system will discharge a large amount of waste heat, resulting in a waste of resources. A total heat exchanger can solve these problems. Basic structure of total heat recovery fresh air system Total heat recovery fresh air system is mainly composed of total heat exchange system, power system, filtration system and box body. 1. Heat exchange system: A total heat exchanger is a system to recover the heat energy of exhaust air and reuse it for air supply. It conducts heat exchange between exhaust air and supply air. Therefore, sufficient heat exchange can achieve higher energy saving effect. 2. Power system: The power part of the total heat recovery fresh air system adopts the centrifugal low-noise motor carefully researched and developed by international advanced technology and aerodynamic principle, with low energy consumption and stable operation. 3. Filtration system: The filtration system of the total heat recovery fresh air system is composed of environmentally friendly ABS frame and nano-pore heat transfer diaphragm made of imported polymer materials. It makes thermal conductivity, humidity and humidity higher, air tight safety, tear resistance, aging resistance and mildew proof, etc 4. Box body: The box body of the all-heat recovery fresh air system is made of aluminum alloy frame colored steel foam board, with strong fire and corrosion resistance and built-in efficient sound-absorbing material. Characteristics of total heat recovery fresh air system 1. Two-way air exchange: supply air and exhaust air are carried out simultaneously. Replacement of fresh air with equal volume can effectively prevent air conditioning. 2. Filtration treatment: Equipped with different filtration materials, fresh air filtration treatment can effectively purify the air. Comply with building code requirements. Equipped with different filters can effectively prevent dust and harmful gases and other pollutants into the room. 3. High efficiency and energy saving: built-in full heat exchanger, heat exchange efficiency is more than 70%, cold and hot load (room temperature) is not affected by fresh air, greatly reducing the energy needed for fresh air management, achieving high efficiency and energy saving. 4. Simple application: a variety of models, integrated structure, built-in heat exchanger, dual fan, filter, only need to connect the power supply and tuyere (channel) can be used, not only simplify the design, but also adapt to various renovation projects. 5, safe and reliable: low noise fan and internal noise reduction processing, to prevent the interference to the site, the whole machine double fan without moving parts, can ensure long-term stable and reliable work, once and for all.
Working principle of fresh air unit Fresh air unit control includes: air supply temperature control, air supply relative humidity control, antifreeze control, CO2 concentration control and various interlocks. If fresh air units (such as direct current units) are considered to bear the indoor load, indoor temperature (or indoor relative humidity) should also be controlled. The electric control valve can also be connected with the fan. When the fan is cut off, the electric control valve closes. The temperature control system of the fresh air unit consists of a proportional integral temperature controller, a temperature sensor installed in the air supply tube and an electric control valve. The function of the controller is to compare the temperature of the temperature sensor detected by the temperature sensor placed in the air duct with the controller and the temperature controller set by the controller, and to give the controller based on the result of PI operation. An electric control valve is a signal to open or close a valve to keep the air supply temperature within a specified range. Differential switches give a switching signal when the screen is blocked or exceeds a specified value. When refrigeration is needed, the temperature controller is placed in refrigeration mode. When the temperature measured by the sensor reaches or falls below the set temperature, the temperature controller sends a closing signal to the electric valve. The closing contact of the electric valve opens and closes the valve. If the measured temperature does not reach the set temperature, the thermostat sends an open signal to the electric valve, which opens at the open contact. When heating is required, the thermostat is placed in heating mode. When the temperature measured by the sensor reaches or exceeds the set temperature, the thermostat sends a closing signal to the electric valve. The closing contact of the electric valve opens and closes the valve. If the measured temperature does not reach the set temperature, the thermostat sends an open signal to the electric valve, which opens at the open contact. When the coil temperature is too low, the low-temperature antifreeze switch sends out the switch signal, and the fan stops running to prevent the coil from freezing. Fresh air handling unit principle compared with central air conditioning is not complicated, fresh air units are divided into uniflow, two-way flow of new fan, fan and the first two total heat transfer principle of fresh air handling unit is simpler, and fan energy saving heat exchange a new temperature control system, the working principle of the complex use effect is very good, of course, is expensive. The fresh air unit mainly deals with outdoor air, and the air conditioning unit mainly deals with the air after being treated by the new fan. However, the new fan can have return air or fresh air, both in order to better adjust temperature and humidity parameters.
Common problems in the safe operation of fresh air units 1. During the winter operation of the fresh air unit, great attention should be paid to the anti-cooling work of each air conditioning and ventilation equipment and pipeline. The air handling of fresh air units is more complicated than that of fresh air units. Fresh air units are mostly used in large public areas where fan-coil units cannot be installed, while fresh air units are mostly used in small areas where fan-coil units can be installed. Pay attention to the average outdoor temperature when cleaning pipe in hydrostatic test. Be sure to completely empty yourself after cleaning. Temporary heating of fresh air units shall be carried out in accordance with all normal procedures. In the absence of an automatic control strategy and a full-time personnel management method, temporary heating without fresh air system air conditioning and ventilation equipment is recommended. 2. Establish and improve the operation management plan. When the fresh air unit is stopped at night, the inlet valve or temperature controller of the fixed automatic displacement control system should be turned on or the electric heater equipment should be set to ensure the temperature of the electric heater of the fresh air unit. During the operation of fresh air units in winter, regular inspection should be conducted to track temperature changes. In cold weather, the air-conditioning unit is not suitable for adjustment and maintenance to ensure the safety of the air-conditioning water system. 3. The designed fresh air unit must be equipped with reasonable anti-cooling automatic control interlock monitoring equipment. A fresh air unit is an air conditioning unit that provides fresh air. In terms of function, it can realize constant temperature and humidity, or simply provide fresh air according to the requirements of the use environment. Functions such as dust removal, dehumidification (or humidification), cooling (or heating) can be determined according to the needs of the use environment. The more complete the function, the higher the cost. Air conditioning units and fresh air units are commonly used and fan boxes are installed. Although there are differences between fresh air units and air conditioners, they can complement each other in function. It is suggested to install fresh air units at the same time, and then install fan coil units in each room separately, so as to learn from each other and achieve the goal of more energy saving and more comfortable. When the centrifugal fan of fresh air unit is running, the rated water output of electric heater should be guaranteed first. When the temperature is too low or the water output is too much, should alarm, and immediately close the fan thermal insulation electric air valve and fresh air system channel.
What Does An Air Exchanger Do? Here at Pro Duct Solutions,we get asked often by our customers”how does an air exchanger work?”.We’ve decided to make a article explaining the importance of Air exchangers. R2000 homes are the most energy efficient homes on the market.These homes were designed in 1997 to keep in all the heat during the winter,built with added insulation and thermal poly wrap,these homes make sure to keep in the warm and block out the cool. When these homes are too tightly built it creates moisture and condensation during the winter which is why they came out with air exchangers.The purpose of these air exchangers are to provide fresh air into the air system along with dehumidifying the existing air to ensure your home isn’t creating mold growth.These systems also clean the existing stagnant air inside the home,allowing fresh air to move around freely. These systems are very energy efficient and can be set to any level of humidity in your home,It simply gets connected to your existing ductwork on your furnace. Do I Need An Air Exchanger? You might be wondering”Do I need an air exchanger,?”well there are two simple ways of finding out.The first method of finding out if your home needs a air exchanger is seeing if your home is an R-2000 home.This means adding an added layer of insulation and Thermal poly around the whole house.If so then your home might be creating too much moisture and condensation.The second method would be getting one of our trained specialist in moisture control to take a thorough analysis of your home.For best Health&comfort in your home we recommend 35-50%RH. If you feel that your home isn’t getting enough fresh air then you could consider an air exchanger,Some people may ask“Why don’t I just open the window?”,the air exchange will dehumidify the air coming from the outside to ensure not too much humidity gets inside your home. ‍ What Is An Air Exchanger? Air exchanger are installed in most new homes today,they work with the existing HVAC system to ensure fresh air is coming into the home.At the core of the Air exchange there are small passage ways where the air gets warmed up with the stale air from inside the home.The stale air gets sent to the outside while the new air is sent to the inside.(Refer to the picture below) Should I Run The Air Exchanger During Winter? Every home is different depending on how much condensation builds up during the winter,Simple answer is yes.During the winter,your home will experience high amount of condensation due to the insulation and moisture barriers(Thermo poly).You’ll want to set your Air exchanger to the proper humidity level for the winter. ‍ Maintaining Your Air Exchanger Along with everything in this world there is some maintenance work to be done on these units.We recommend getting the filters cleaned every year by one of our trained technicians.The process includes taking apart the units filter components with thoroughly cleaning/drying them.Our technician will then take a look at the vent covers on the outside to make sure they are working proper and haven’t been damaged.We finish off by preforming a function test to ensure the thermostat is in working order.
Air Exchangers & Energy Efficiency Air exchangers can be energy efficient. To make sure you have the maximum efficiency your air exchanger can provide, the location of it is important. The air exchanger should be able to circulate air into all rooms of your home. This also includes the attic and basement of your home. Several points of air intake and exiting are also part of the air circulation process. Some air exchanger equipment is installed in the attic or basement of your home for the most optimal production it can provide.
Air Exchangers Can Help Reduce Mold & Mildew Besides providing fresh air for your home, air exchangers also help to remove any pollutants from the air as well. Air exchanger filters ensure the air within the home is kept clean and fresh while still remaining energy efficient. They are also able to remove hot moist air from your home, which then helps to reduce the risk of mold and fungi to grow. The structure of your home is also protected because the moist air that can damage it is removed.
How Do Air Exchangers Work? During the summer and in warm weather, the air exchanger will remove the outdoor heat and humidity before the filtered air enters the home. Typically, homes in colder climates have a heat recovery ventilator that is designed to retain heat without reducing the humidity. Some homes in all climates have an energy recovery ventilator that can remove both the heat and humidity. By having an air exchanger, you can help to provide the best possible air for your home. In order to achieve this for your home, a complete ventilation system must be selected, installed, and operated properly. To ventilate your home properly, make sure to supply just the right amount of fresh air continuously all year long. Also make sure to have continuous exhaust with an equal amount of indoor air to help prevent any stale in your home. An exception can be when windows or doors are opened as a way of ventilating. When this happens, you can turn the air exchanger off because there is no advantage to over-ventilate your home. By doing this, you can dry out the air in your home and use excessive amounts of electrical energy.