Internal-melt ice storage air-conditioning system and operating method thereof

Abstract

The invention provides an internal-melt ice storage air-conditioning system and an operating method of the internal-melt ice storage air-conditioning system. The internal-melt ice storage air-conditioning system comprises a cooling tower, a single-working-condition ice-making refrigerating machine, an ice storage tank, a heat exchanger, a refrigerating unit, end equipment, a valve and corresponding circulating pumps. The single-working-condition ice-making refrigerating machine replaces a low-efficiency double-working-condition refrigerating machine in an existing ice storage air-conditioning system and only takes charge of ice-making cold storage at the electricity valley period at night, and the high-efficiency refrigerating unit and the ice storage tank cooperatively undertake daytime loads, so that the operating efficiency of a daytime cold supply system is improved, the distribution power of a refrigerating system is decreased, and the operating cost of the cold supply system is lowered. In addition, the internal-melt ice storage air-conditioning system has five operating modes, control is easier and more reliable, and greater economic benefits and social benefits are achieved.

Description

technical field [0001] The invention relates to the technical field of refrigeration and air conditioning, in particular to an ice-melting ice-storage air-conditioning system and an operating method thereof. Background technique [0002] The ice-storage air-conditioning system uses low-valley power at night to make ice and store cold. It melts the ice and cools it during the peak hours of the day. It can cut peaks and fill valleys, balance the load of the power grid, reduce the construction cost of peak-shaving power stations and reduce environmental pollution. Good economic and social benefits. [0003] However, the existing public buildings using ice storage air-conditioning systems all adopt the partial load ice storage method, that is, the ice storage air-conditioning system consists of a double-working condition refrigerator with ice-making and cooling functions, an ice storage device, and a base-load main engine under normal working conditions. In order to apply to th...

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Problems solved by technology

[0006] The purpose of the present invention is to provide an ice-melting ice-storage air-conditioning system with high operating efficiency, low energy consumption and simple control, so as to overcome the shortcomings of the existing ice-storage air-conditioning system, such as low operating efficiency, high energy consumption, and complicated control

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