An energy-saving and comfortable air-conditioning system and its working method

Abstract

The invention discloses an energy-saving comfortable air-conditioning system and a working method thereof, the energy-saving comfortable air-conditioning system comprises four parts, namely a soil cold and heat source part, a solar energy heat source part, a fresh air processing part and an air-conditioning terminal, when both a cooling load and a moisture load are small, cold water is directly provided for a capillary network on a wall surface, a ground source heat pump unit with heat recovery does not work, a fresh air heat recovery device is used for performing heat exchange between fresh air and exhaust air and then sending the fresh air into a displacement ventilation device; when the cooling load is large, the ground source heat pump unit with the heat recovery is in refrigeration operation state and used for providing cooling medium water for the capillary network on the wall surface; when a heat load is small, after being subjected to heat exchange through the fresh air heat recovery device, the fresh air passes through enters into a fresh air processor for being heated and is further sent to the displacement ventilation device; when the heat load is large, solar energy isfirstly utilized and the indoor end of the unit is simultaneously used for providing a heating medium for the capillary network on the ground. By adopting the energy-saving comfortable air-conditioning system, the energy consumption of the air-conditioning system for processing the moisture load is reduced, and the fresh air processing system can reduce the emission of condensation heat to soil, thereby simultaneously improving an hot and humid indoor environment and air quality.

Description

technical field [0001] The invention belongs to the field of renewable energy utilization, in particular to an air-conditioning system that comprehensively utilizes solar energy and soil energy storage. Background technique [0002] Due to the energy crisis, the concept of building energy conservation has been widely valued. In my country, some air-conditioned buildings with high energy consumption generally ignore the needs of indoor personnel for sufficient fresh air volume in order to save energy. At the same time, the use of a large number of new building materials has intensified the The deterioration of indoor air quality will cause many uncomfortable symptoms of indoor personnel, and severe cases will induce irreversible respiratory diseases. [0003] The central air-conditioning system of existing buildings generally adopts a single refrigeration method, mainly compression refrigeration. Due to the shortcomings of complex structure and high heat source require...

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Problems solved by technology

[0002] Due to the energy crisis, the concept of building energy conservation has been widely valued. In my country, some air-conditioned buildings with high energy consumption generally ignore the needs of indoor personnel for sufficient fresh air volume in order to save energy. At the same time, the use of a large number of new building materials has intensified the The deterioration of indoor air quality will cause many uncomfortable symptoms for indoor occupants, and severe cases will induce irreversible respiratory diseases

[0003] The central air-conditioning system of existing buildings generally adopts a single refrigeration method, mainly compression refrigeration. Due to the shortcomings of complex structure and high heat source requirements, this absorption refrigeration unit is not widely used.

Conventional air-conditioning systems generally use refrigeration and dehumidification to deal with humidity loads, which not only causes low chilled water temperature and low performance coefficient of the unit, but also increases energy consumption for fresh air processing. If the end uses radiation cooling, the other The temperature of the supply and return water is low, and it is easy to form condensation on the surface of the radiant panel, which directly affects the indoor air quality

Sometimes in order to reduce the energy consumption of the unit, the method of reducing the fresh air volume or not designing the fresh air volume will cause the indoor air quality to decline

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