Radiant heat exchange plate and central air conditioning system

Abstract

The invention discloses a radiant heat exchange plate and a central air conditioning system. The radiant heat exchange plate comprises a radiation panel (1), a heat exchange part and a heat preserving layer, wherein the radiation panel is a gypsum panel or a stone panel; the heat exchange part is arranged on the radiation panel (1), and comprises integral heat transfer fins (2) attached onto the radiation panel (1) and heat exchange tubes (3) which are arranged on the heat transfer fins (2) and are in close contact with the heat transfer fins (2); the heat preserving layer covers the heat exchange part. The radiant heat exchange plate according to the invention has the advantages that the surface temperature field is uniform, condensation does not easily occur and the radiant heat transfer amount is great.

Description

technical field [0001] The invention relates to the technical field of air conditioning, in particular to a radiation heat exchange plate and a central air conditioning system. Background technique [0002] The dominant air-conditioning system in operation at this stage is the all-air air-conditioning system, which not only uses air for necessary ventilation, but also uses air as a heat transfer medium. However, there are some defects in the all-air air conditioning system: not only waste energy, reduce indoor air quality, but also its cold air flow and indoor temperature stratification cause a large temperature difference between the human body's feet and head, which will reduce the thermal comfort of the human body . In order to save energy, the conventional all-air system usually introduces most of the indoor exhaust air as return air into the air handling unit, and is processed together with the outdoor fresh air before being sent to each air-conditioned room. This app...

AI Technical Summary

Problems solved by technology

However, there are some defects in the all-air air conditioning system: not only waste energy, reduce indoor air quality, but also its cold air flow and indoor temperature stratification cause a large temperature difference between the human body's feet and head, which will reduce the thermal comfort of the human body

[0006] In this patent, since the holding member 18 is a long part installed along the straight line portion 16a of the heat exchange tube 16, the area in contact with the radiation panel 12 accounts for a small proportion of the total area of ​​the radiation panel 12, and surface heat transfer cannot be achieved.

This results in an uneven temperature field on the surface of the radiant panel 12, which makes it difficult to control dew condensation and the radiation heat transfer is small

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