Special fan-coil unit for plateau

Abstract

The invention discloses a special plateau fan coil unit, which comprises a housing, a cold and hot coil and a low-pressure return air box. One end of the housing is provided with an air inlet, the other end is provided with an air outlet, and a cooling fan is fixed inside the housing. The heat coil; the suction port of the low-pressure air return box is used to be installed indoors and communicated with the indoor space; it is characterized in that it also includes an air compressor and a high-pressure air storage tank; the air inlet of the air compressor and the low-pressure return air box The air outlet is in sealing communication, the output port of the air compressor is in sealing communication with the intake pipe of the high-pressure air storage tank, and the high-pressure air supply pipe of the high-pressure air storage tank is in sealing communication with the air inlet of the housing. The above-mentioned fan coil unit has the advantages of simple structure, and can still maintain relatively ideal heat exchange performance under low-pressure environment, reaching the heat exchange capacity under standard air pressure. It is suitable for popularization and use in plateau low pressure environment.

Description

technical field [0001] The invention belongs to the field of central air-conditioning terminal processing equipment in a plateau low-pressure environment, and in particular relates to a plateau-specific fan coil unit. Background technique [0002] The fan coil unit is the terminal product of the central air conditioner. It is composed of heat exchangers, water pipes, filters, fans (or fans), water trays, exhaust valves, brackets, etc. Its working principle is to continuously recirculate the room where the unit is located. The air is cooled (heated) after passing through the cold water (hot water) coil to keep the room temperature constant. At present, most of the parameters of various central air conditioners (heat exchange and heating equipment) on the market in our country are designed under standard atmospheric pressure or near standard atmospheric pressure. However, with the development strategy of the western region, a large number of heat exchange and heating equipmen...

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Problems solved by technology

[0003] However, the research of domestic scientific research institutions has proved that the performance of heat exchange equipment in plateau low pressure environment, with the increase of altitude, the decrease of atmospheric pressure will cause the decrease of air density. According to the analysis of heat transfer theory, the leading to a decrease in the convective heat transfer coefficient h

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