Refrigerating unit
A refrigeration unit and refrigeration capacity technology, which is applied in refrigerators, refrigeration components, refrigeration and liquefaction, etc., can solve the problems of compressor measurement parameter error, error accumulation, performance deviation, etc., and achieve the effect of eliminating dependence.
Active Publication Date: 2022-04-26
QINGDAO HISENSE HITACHI AIR CONDITIONING SYST
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Problems solved by technology
However, due to the deviation between the performance curve of the compressor and the actual performance of the compressor, and the measurement parameters of the compressor also have errors, resulting in the accumulation of errors, the calculated results have a large deviation
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[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0033] In describing the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", The orientations or positional relationships indicated by "top", "bottom", "inner", "outer", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than in...
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The invention discloses a refrigerating unit which comprises a plurality of refrigerating systems. The control module is used for collecting the suction pressure Psi, the suction temperature Tsi, the exhaust pressure Pdi and the exhaust temperature Tdi of each unit; the temperature sensor is further used for collecting the water inlet temperature Tei and the water outlet temperature Teo of chilled water and the water inlet temperature Tci and the water outlet temperature Tco of cooling water; the control module is further used for collecting the load rate Dei of the compressor and the power Wi of the compressor. The control module is further used for calculating the refrigerating capacity Qei of each compressor, the load coefficient ki of the refrigerating system, the intermediate water temperature Te < i + 1-i + 2 > of the chilled water and the intermediate water temperature Tc < i + 1-i + 2 > of the cooling water according to the collected data. The problem that the intermediate water temperature of a plurality of refrigerating systems cannot be measured is solved, independent measurement and calculation can be carried out on the refrigerating system where the compressor is located, and fault pre-diagnosis is carried out on each refrigerating system; dependence on a flowmeter is eliminated, and investment cost of energy-saving projects such as an efficient machine room and fault pre-diagnosis is reduced.
Description
technical field [0001] The invention relates to the technical field of refrigeration, in particular to a refrigeration unit, including a plurality of refrigeration systems. Background technique [0002] In large-scale chillers such as centrifuges and screw machines, the temperature of the intermediate section of chilled water / cooling water can be calculated by calculating the cooling load in a single refrigeration system, and the leakage, excess or chilled water / cooling water of each refrigeration system in the refrigeration unit can be checked Problems such as scaling are instructive. [0003] There are two types of cooling load calculations in the prior art, one is direct load calculation, which calculates the evaporator cooling load and condenser load in real time by measuring the chilled water / cooling water flow rate, chilled water / cooling water inlet / outlet temperature . This method is accurate and easy to operate, but it needs to add a flow sensor, which is expensive...
Claims
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Login to View More IPC IPC(8): F25B1/00F25B49/02
CPCF25B1/00F25B49/02Y02B30/70
Inventor 陈见兴石靖峰李根源马振
Owner QINGDAO HISENSE HITACHI AIR CONDITIONING SYST