Fresh air handling unit adjusting and controlling system suitable for radiant air conditioner and controlling method of fresh air handling unit adjusting and controlling system

Abstract

The invention provides a fresh air handling unit adjusting and controlling system suitable for a radiant air conditioner and a controlling method of the fresh air handling unit adjusting and controlling system. The fresh air handling unit adjusting and controlling system is used by cooperating with a radiant air conditioner system in an indoor space; a fresh air dehumidifying unit is adopted to bear the fresh air load, the humidity load and part of indoor sensible heat load; a fresh air handling unit can achieve the different functions of filtering, cooling, dehumidifying, auxiliary heating, ventilating and the like according to season requirements and the outdoor fresh air state; in addition, two air supply channels, that is, the main air channel and the bypass air channel are designed in a fresh air handling unit indoor unit, gating is conducted through a gating valve, and thus the fresh air handling unit indoor unit can operate in different working modes through free switching; and through control of an adjusting and controlling device over the operation modes, an auxiliary radiating system adjusts the air environment of the indoor space, the indoor environment comfort level and the system operation energy efficiency ratio can be effectively increased, and the problems that the fresh air conveying energy efficiency ratio in the transition season is insufficient, the room temperature and humidity are unreasonable, moisture condensates on the surface of a radiant panel, and energy sources are consumed excessively are solved.

Description

technical field [0001] The invention belongs to the technical field of indoor ventilation and air conditioning, and in particular relates to a fresh air unit regulation system and control method suitable for radiant air conditioning. Background technique [0002] Radiant ceiling cooling technology originated in the 1950s. After decades of research and development, it has been gradually promoted and applied in various regions of the world. Conventional fan coil units realize indoor temperature regulation through air convection, which is difficult to adapt to changes in indoor heat-humidity ratio, and has a strong sense of blowing. The ceiling radiant panel mainly provides cooling through radiation, the indoor temperature distribution is uniform, there is no temperature dead angle, and there is no sense of blowing indoors. It is internationally recognized as the air-conditioning terminal system with the highest level of indoor comfort. [0003] In recent years, many scholars ...

AI Technical Summary

Problems solved by technology

However, most of the fresh air fans on the market do not have a ventilation function, and the fresh air still needs to pass through surface coolers and other equipment in transitional seasons. Insufficient energy efficiency ratio used

[0007] (2) At present, most of the fresh air unit products on the market are single fresh air units with a single ventilation mode and lack of active cold or heat sources. However, the indoor design parameters of the radiant ceiling system are special, and the fresh air supply status is unique, requiring fresh air units Cooperating with the radiation system to provide auxiliary heat load treatment can achieve better indoor environmental comfort, but the lack of active cooling or heating sources and the disadvantages of a single ventilation mode limit the performance of fresh air unit products

[0008] (3) At present, some fresh air fans in the market are poorly designed in the self-control part, and the fans cannot adjust the fresh air processing status in time according to indoor and outdoor parameters, making it difficult for the fresh air entering the room to meet the requirements of personnel use, and the comfort is insufficient

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