Product name: Rotary heat recovery fresh air unit

 

Scope of application:

 

● Air volume range: 200-1000m3/h

 

●Commercial air conditioning system:

 

Star hotels, high-end office buildings, central heating and cooling residential buildings, large supermarkets, bus stations, train stations, aircraft waiting rooms, hospitals, indoor gymnasiums, swimming pools, etc.

 

●Industrial air conditioning system:

 

Printing machinery, papermaking, textiles, pharmaceuticals, food, electronics, etc.

 

Working principle

 

The main component of the rotary heat exchanger is a disc-shaped heat storage wheel, which is made of aluminum foil and wound into a honeycomb shape as a heat storage body. When working, the fresh air passes through one semicircle of the heat exchanger, and the exhaust air passes through the other semicircle in the opposite direction at the same time. Under the action of the power mechanism, the heat storage wheel continuously rotates at a speed of about 10 rpm, and the heat storage body is continuously moved on the high temperature semicircle side. Heating, absorbing heat; when rotating to the low temperature semicircle side, it is cooled and releases heat. Repeating this cycle, part of the energy (cold, heat) in the exhaust air is recovered into the fresh air, and the surface of the aluminum foil is coated with hygroscopic material to make a fully heated runner. The moisture in the airflow enters the hygroscopic coating. When the runner reaches The water is released when there is additional air flow. The rotary heat exchanger uses the fresh air and exhaust air to exchange sensible heat and latent heat to recover energy, thereby saving energy and maintaining good ventilation. In summer, the fresh air can be pre-cooled and dehumidified. , the fresh air can be preheated and humidified in winter.

 

The main function

 

●The heat exchange rate is as high as 70%-90%;

 

●The core-rotating desiccant content is high and the moisture transfer effect is significant;

 

●The molecular sieve coating adopts patented sintering technology, which is not easy to peel off, and has significant heat transfer and mass transfer effects;

 

●A single runner has a large windward area, small thickness, small resistance, and small footprint, making it easy to be used in combination with other functional sections of the air conditioning unit;

 

●It has self-cleaning function and cleaning fan surface, which is more durable in use.

 

Product Features

 

     1. The heat recovery rate is above 81.5%, and the pressure drop after exchange is 200Pa.

 

     2. The rotary heat exchanger has considerable temperature efficiency at 12 rpm and humidity efficiency of approximately 20 rpm.

 

     3. The runner has two purposes: total heat recovery and sensible heat recovery.

 

     4. The installed power load is reduced, achieving the purpose of energy saving. There is no need to install air intake reheating equipment, which improves the conditions of surface cooler and insulation.

 

     5. The runner core is made of special alloy aluminum with high heat transfer coefficient, chlorine resistance, corrosion resistance and long service life.

 

     6. Structure: Overall winding + fixed spoke structure. It is not glued, has a solid and stable structure, and has a service life of more than 15 years. It can be cleaned with high-pressure air, water, steam, solution, etc.

 

7.The unit frame is equipped with a thermal insulation and anti-cold bridge. All the metal inside the air handling unit box is isolated from the outside metal through polyurethane foam and specially designed rubber sealing strips, and fits closely with the panel, resulting in a low air leakage rate.



 The clamping plate is buckled into the aluminum profile frame, so the corners of the sheet metal are completely isolated from the moist air, so the rust spots on the panel do not exist.

 

     9. Solid structural design: The unit is connected with aluminum alloy profiles and cast aluminum plug-ins, which has high overall strength. At the same time, a square steel frame is designed inside the unit according to different air volumes and pressures to further enhance the strength of the unit.

 

     10. Polyurethane insulation: The panel is composed of polyurethane foam with a density of 50kg/m3 and extremely low thermal conductivity and two layers of inner and outer steel plates. There are three standard panel thicknesses: 25mm, 35mm, and 50mm.

 

     11. The fan and motor components have unique vibration reduction devices, and a flexible connection is used between the air outlet of the fan and the panel to minimize the vibration and noise of the unit. The unique sealing structure prevents noise from being transmitted outside the unit, so we provide you with a unit that operates quietly to meet the needs of various industries and applications.

 

     12. The unit box adopts a double-panel structure, the outer wall plate thickness is ≥0.5mm, the inner wall plate thickness is ≥0.6mm, and the panel thickness is 50mm. The insulation layer of the box is made of flame-retardant polyurethane foam. The inner surface of the unit can be cleaned and disinfected regularly to ensure air quality, while ensuring optimal thermal insulation and shock and noise reduction. 

Panels and frames are designed for easy disassembly and assembly.

 

     13. The thickness of the fin aluminum foil is 0.13mm, the copper tube is ￠15.8x0.5mm, and the heat transfer coefficient is ≥54m2W/℃.

 

     14. The unit must be pressure tested more than 2 times before 

leaving the factory, and the detected pressure is 2.8Mp.

 

     15. The runner unit can be produced as a complete set, without the need to purchase other supporting equipment.