A narrow-gap heat exchange air conditioner terminal device

Abstract

Disclosed is an air conditioning terminal device with heat exchange in a narrow annular space, relating to the technical field of terminal devices of heating, ventilation and air conditioning systems. The terminal device comprises an installation frame, a water system and an air system. The water system comprises an upper header pipe, a lower header pipe and heat exchange tubes, wherein the multiple heat exchange tubes are vertically fixed on the installation frame, each of the heat exchange tubes comprises an inner tube and an outer sleeve, the inner tube is fixed inside the outer sleeve, a liquid flow channel is formed between the inner tube and the outer sleeve, an air flow channel is formed inside the inner tube, and two ends of the liquid flow channel are respectively in communication with the upper header pipe and the lower header pipe. The air system comprises a main air tube and a ducted fan, wherein the ducted fan is connected to the main air tube, the main air tube is in communication with the air flow channel, one side of the top of each of the heat exchange tubes is provided with an upper air opening, and the air flow channel is in communication with the exterior by means of the upper air opening. The device can enhance the heat exchange effect and improve the heat exchange capability of the air conditioning terminal device while ensuring there is no obvious blowing feeling in a working area for workers, and also has the functions of heating in winter and cooling in summer.

Description

technical field [0001] The invention relates to the technical field of terminal devices of HVAC systems, in particular to a narrow-gap heat-exchanging air-conditioning terminal device. Background technique [0002] Nearly zero-energy buildings represent the development trend of future buildings with their characteristics of ultra-low energy consumption and high thermal comfort. The energy consumption of the HVAC system is the most important component of building energy consumption. In a near-zero energy building with low cooling / heating load as its important feature, the traditional HVAC system should also be adjusted accordingly. At present, the common air-conditioning terminal equipment that can realize both cooling and heating in buildings in my country mainly includes fan coil units and radiant panels. The noise level of the fan coil unit is generally between 30dB-60dB, and the speed of the air outlet is between 2-4m / s, which is easy to produce a sense of wind, and is n...

AI Technical Summary

Problems solved by technology

The noise level of the fan coil unit is generally between 30dB-60dB, and the speed of the air outlet is between 2-4m / s, which is easy to produce a windy feeling, and is not suitable for occasions that require high noise control; Condensation is allowed on the surface, which not only limits the cooling capacity of the radiant panel, but also cannot bear the humidity load of the indoor air conditioner

In the patent "Wet Radiation Convective Cooling and Heat Exchanger" (ZL201410012986.4), aiming at the characteristics of low cooling / heating load of near-zero-energy buildings, it proposes a method that can satisfy both winter heating and summer cooling, and has The terminal equipment with dehumidification function, but because the heat exchange between the cold heat exchanger and the indoor environment is carried out through natural convection and radiation, the heat transfer coefficient is relatively low, so when the indoor load is large, the area of ​​the terminal equipment is required also larger

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