Narrow ring gap heat exchange air conditioning terminal device

Abstract

The invention discloses a narrow ring gap heat exchange air conditioning terminal device, and relates to the technical field of heating ventilation air conditioning system terminal devices. 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 pipes, and the multiple heat exchange pipes are vertically fixed to the installation frame; each heat exchange pipe comprises an inner pipe and an outer casing pipe, and the inner pipe is fixed in the outer casing pipe; a liquid flow channel is formed between each inner pipe and each outer casing pipe, and an air flow channel is formed in each inner pipe; the two ends of each liquid flow channel communicate with the upper header pipe and the lower header pipe separately; the air system comprises an air main pipe and a ducted fan connected to the air main pipe, and the air main pipe communicates with the air flow channel; and oneside of the top of each heat exchange pipe is provided with an upper air opening, and the air flow channel communicates with outside through the upper air opening. According to the terminal device, on the premise of ensuring that a working area of personnel has no obvious blowing feeling, the heat exchange effect can be improved, and the heat exchange capability of the air conditioning terminal device is improved; and the terminal device 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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