Refrigeration system
AssigneesQingdao Haier Air-conditioning Electronic Co., Ltd, Haier Smart Home Co., Ltd.
InventorsChuanzhi Wu, Jie Zhang, Jielei Sui
Life of this patent
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Abstract
A refrigeration system, when a set evaporator water outlet temperature To is less than a daily minimum temperature Tmin, starts a cold water unit to cool a cooling pool; when the set evaporator water outlet temperature To is greater than a daily maximum temperature Tmax, starts a natural cooling source to cool the cooling pool; when Tmin≤To≤Tmax, if Ti≥To−a set value, starts the cold water unit to cool the cooling pool, and if Ti<To−the set value, starts the natural cooling source to cool the cooling pool. The refrigeration system not only satisfies the cooling requirements of the cooling pool, but also achieves the purpose of saving energy, reducing costs.
Claims12
A refrigeration system, wherein the refrigeration system includes:
- a control module, a chiller, a natural cold source and an intermediate heat exchanger;
- wherein the chiller includes a compressor, a condenser and an evaporator;
- a water outlet of the evaporator and a water outlet of the natural cold source are respectively connected to a water inlet of the intermediate heat exchanger and a water inlet of the evaporator and a water inlet of the natural cold source are respectively connected to a water outlet of the intermediate heat exchanger;
- a liquid inlet of the intermediate heat exchanger is connected to a liquid outlet of a cooling pool, and a liquid outlet of the intermediate heat exchanger is connected to a liquid inlet of the cooling pool;
- the control module obtains a lowest temperature Tmin, a highest temperature Tmax and preset target discharge water temperature of the evaporator To;
- and
- the control module determines whether or not to start the chiller or the natural cooling source according to the Tmin, Tmax and To:
- (11) if To<Tmin, the chiller is started to cool a liquid in the cooling pool;
- (12) if To>Tmax, the natural cold source is started to cool the liquid in the cooling pool;
- (13) if Tmin≤To≤Tmax, an actual inlet water temperature Ti at the water inlet of the intermediate heat exchanger is collected every set time period for determining whether or not the actual inlet water temperature Ti satisfies Ti≥To−a set value, wherein the set value >0;
- if Ti≥To−the set value, the chiller is started to cool the liquid in the cooling pool;
- if Ti<To−the set value, the natural cold source is started to cool the liquid in the cooling pool.
Dependencies are inferred from the claim text.