All-year cold supply chiller with natural cooling and cold-accumulation functions

Abstract

The invention relates to an all-year cold supply chiller with natural cooling and cold-accumulation functions. A compressor, an air connecting pipe, a condenser, a liquid connecting pipe, a throttling gear and an evaporator form a steam compression type refrigeration circulation loop; by opening a heat pipe air valve on a heat pipe branch, a heat pipe liquid valve connected in parallel with the throttling gear and an evaporator liquid valve on the evaporator, the evaporator, the air connecting pipe, the condenser and the liquid connecting pipe are connected in sequence to form a cooling medium natural circulation loop; and by opening the heat pipe air valve, the heat pipe liquid valve and a cold-accumulation liquid valve, the air connecting pipe, the condenser, the liquid connecting pipe and a cold-accumulation trough are connected in sequence to form a cold medium cold-accumulation natural circulation loop. The all-year cold supply chiller adopts a split structure, keeps the function of making air conditioning cold water in summer, can sufficiently utilize the natural cold energy of outdoor air to make cold water and accumulate cold in transition seasons and winter, provides cold water for all-year cold supply areas, such as middle apical areas of buildings and highly heating areas, and has the remarkable advantages of simple structure, high efficiency and energy saving.

Description

technical field [0001] The invention relates to a year-round cooling water chiller with natural cooling and cold storage functions, which is especially suitable for occasions that need to provide cold water for air conditioning and cold storage in transitional seasons and winters, and belongs to the equipment in the field of refrigeration and air conditioning. Background technique [0002] At present, there are many areas with high heat generation throughout the year in buildings, such as large building interior areas, equipment rooms, special cooling rooms, etc. These areas need cooling in summer, transitional seasons and winters to offset the large area cooling load. For the inner area of ​​a large building, the form of fan coil unit + fresh air air conditioner is often used. It is undoubtedly a good way to use fresh air for cooling in transitional seasons and winters, but generally it will bring problems such as the need to increase the area of ​​the air duct and the high...

AI Technical Summary

Problems solved by technology

However, there are two obvious defects when using air-cooled chillers to produce cold water: (1) the energy consumption of compressors and fans is relatively large when the chillers are running; (2) when the chillers are in supply operation, due to the low condensation temperature, It is necessary to adjust the condensing pressure and the speed of the cooling fan to increase the condensing pressure, which increases the energy consumption of the unit and reduces the operating reliability

[0005] The above analysis shows that the existing technology is still difficult to achieve efficient and reliable cooling and cold storage in winter and transitional seasons, and it is necessary to provide a more efficient technical solution for cold water production and cold storage

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