Centralized air handling device About |

Web Design And Seo For www.china-webdesign.com hvac coil – China Manufacturer Thank you for inquiry my hvac coil, Tel: +86-512-68188280, Email: factory@found-hvac.com http://www.foundation-hvac.com/key-hvac-coils-688/     Air-handling units (also known as the variety of types of air conditioners), air-handling units, variable air volume air conditioning system with constant air volume system is not much different, but in the selection of the many problems that require special attention.     The overall assembly of air-handling units with adaptability, easy installation, low cost installation, they are on the assembly at the factory and the overall test, therefore, reliable. Variable air volume system selection overall assembled air handling device to seriously check each functional segment\\ s performance in particular you want to check the blower performance because, in accordance with the variable air volume system requirements go to select the blower type and size. often limited by the size of the device itself.     Site fabricated air handling device for each functional segment of the optimized combination, it can be equipped with the election is fully applicable to variable air volume system to send fans back to the fans, also can be equipped with selected other needed functional segments, such as warm-up device, reheater, and so to various types of variable air volume system requirements. Their range of air flow, especially for air volume, variable air volume air-conditioning system.     The suction air treatment device to the blower installed in the unit supply air (x) the port side of the device. This is the most common form of air-handling units, as long as the blower equipped with appropriate and reasonable choice of the initial flow rate of air supply tube, you can make the static pressure loss in the flow rate of conversion to minimize, not even this static pressure loss. Therefore, the fan running power can save. The disadvantage of this device, but, yes, the fan too hot to be air by absorption, thereby reducing the effective air temperature difference, the corresponding need to increase the air supply. Therefore, only when the fan and ducts of the heat sum does not exceed 15% of the total system thermal load, using a suction-type air-handling units, it is more economical and reasonable.     In contrast, blowing air handling unit is installed in the entrance end of the unit supply air blower, fan heat cooling coil unit absorbed, do not seek to increase the supply air temperature, air temperature difference to maintain the maximum , there is no need to increase air flow. However, this device will have the fan outlet velocity is converted to static pressure loss, fan power will increase. When such devices are used in low-speed system, the static pressure loss in flow rate of conversion of the fan power consumption than the suction device 5 percent a l0%. If such a device is used in high-speed air-conditioning system, such consumption than the suction-type device 25% to 30%, or even more. Visible in variable air volume system to blow air treatment device is inappropriate.

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