Solution type full-air air conditioning unit equipped with cold source and heat source completely

Abstract

The invention relates to the technical field of air conditioning devices in civil and industrial projects, in particular to a solution type full-air air conditioning unit equipped with a cold source and a heat source completely. A cold source unit or a heat source unit can prepare and output refrigerants / cold water or heating media / heat water and can provide all cold energy and heat energy for the unit for processing thermal-humidity load of air without being connected with other cold sources or heat sources. A full-air unit can perform cooling and dehumidification processing or heating and humidification processing on fresh air and mixed air. The cold source unit or the heat source unit comprises a compressor, an expansion valve and a refrigerant circulation pipeline, wherein the refrigerant circulation pipeline comprises a first main pipeline, a second main pipeline, a third main pipeline and a fourth main pipeline. The first main pipeline is connected with a fresh air thermal-humidity processing unit through a first refrigerant input branch pipeline. The fresh air thermal-humidity processing unit is connected with the input end of the compressor through the second main pipeline. A second refrigerant input branch pipeline is connected with a mixed air heat humidity processing unit. Refrigerants flowing back from the mixed air thermal-humidity processing unit flow to the second main pipeline from a second refrigerant output branch pipeline.

Description

technical field [0001] The invention relates to the technical field of air-conditioning units in civil and industrial projects, in particular to a solution-type full-air air-conditioning unit with all cold sources and heat sources. Background technique [0002] At present, energy saving and emission reduction and building a resource-saving society have become a very important task at present. Building energy consumption accounts for about 30% of the total energy consumption of the whole society, and the energy consumption of air-conditioning systems accounts for 40-40% of the total energy consumption of buildings. 60%, therefore, reducing the energy consumption of the central air-conditioning system has become an important direction of my country's energy saving and emission reduction. Limited to the current technical level, the actual effective use area of ​​civil buildings and industrial projects is about 75-85%, of which the air-conditioning system occupies 8-12% of the bu...

AI Technical Summary

Problems solved by technology

[0004] 1. There must be centralized cold source and heat source equipment, and there must be cold water and hot water transmission and distribution systems (circulation pumps, sub-collectors and water pipelines), so there is a large energy consumption for transmission and distribution;

[0005] 2. Due to the existence of (1), the building must provide a certain cold source and heat source room, which reduces the effective utilization rate of the building area;

[0006] 3. Due to the existence of (1), the construction and commissioning of the transmission and distribution system (pumps, pipelines) must be completed, and there are problems of large construction volume and long construction period;

[0007] 4. With centralized cold source and heat source equipment, there is still the problem of system adjustment difficulties when some areas have loads and some areas have no loads. In this case, air conditioning equipment (mainly cold and heat source equipment, circulation pumps, etc.) inefficient state

This is also a mechanical defect why the energy consumption of conventional air conditioning systems is high and difficult to reduce - that is, it cannot adapt to the demand conditions where only local areas have air conditioning and heating;

[0008] 5. Since the entire air-conditioning system involves refrigeration equipment, heating equipment, circulation pumps, all-air air-conditioning units, fresh air units + fan coil units, etc., there are many system links, which brings problems such as complex design of the automatic control system, and difficulties in actual management and coordination.

The main purpose is to solve the problems of high energy consumption, large building area occupation, long construction period and complicated process of conventional all-air air conditioning systems

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