A dual-temperature radiant room air conditioner capable of handling fresh air

Abstract

A dual-temperature radiant room air conditioner capable of handling fresh air, including a compressor, the outlet of the compressor is connected to the inlet of the condenser, and the outlet pipeline of the condenser is connected to the expansion valve 1 and expansion valve 2 in parallel after passing through the regenerator The metal radiant plate and the induced fresh air processor, the outlet of the metal radiant plate and the outlet of the induced fresh air processor are respectively connected to the two inlets of the ejector, and the outlet pipe of the ejector is connected to the inlet of the compressor after passing through the regenerator. The invention can increase the suction pressure of the compressor, and use a single compressor to realize refrigeration at two evaporation temperatures, wherein the evaporation temperature of the radiant plate as an evaporator is relatively high, which is beneficial to improve the refrigeration coefficient of the system and achieve energy saving At the same time, it avoids the secondary heat loss problem caused by radiant air conditioning using cold water as the refrigerant, improves the indoor air quality, and expands the application range of the air conditioning system with independent temperature and humidity control.

Description

technical field [0001] The invention belongs to the field of HVAC, in particular to a dual-temperature radiation room air conditioner capable of handling fresh air. Background technique [0002] The current use of radiant air conditioners is increasing. For the northern region, the comfort of radiant heating has been more and more recognized by people, and at the same time, radiant cooling has gradually attracted people's attention, especially in my country's first-tier cities, radiant cooling is also developing rapidly. In summer working conditions, the temperature of the refrigerant (usually water) in the familiar radiant plate should not be too low. If the surface temperature of the radiant plate is lower than the dew point temperature of the environment, condensation will easily occur. [0003] Compared with traditional air conditioners, radiant air conditioners have uniform temperature distribution, strong indoor comfort, and low energy consumption. If combined with fr...

AI Technical Summary

Problems solved by technology

In order to eliminate the residual humidity in the room, it is necessary to provide cold water with a lower temperature. In order to produce low-temperature cold water, the evaporation temperature of the required refrigeration cycle is lower, and the COP of the refrigeration system is lower; In the process of air temperature and humidity treatment, low-temperature cold water exchanges heat with indoor air and wall surfaces through metal tubes and plates, resulting in indirect waste of energy; on the other hand, traditional radiant air conditioners also have secondary heat exchange losses caused by heat exchange between refrigerant and water , the performance of the whole system also has room for improvement

The air temperature of the traditional air conditioner after cooling and dehumidification is relatively low, and the temperature difference of the air supply is too large, which will cause the human body to feel the cold wind and cause discomfort

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