Large industrial waste heat refrigeration system and method

Abstract

The invention discloses a large industrial waste heat refrigeration system. The large industrial waste heat refrigeration system comprises multiple waste heat refrigeration units. Each waste heat refrigeration unit comprises a cooling tower, a cooling water system, a chilled water system, a waste heat absorption type water chilling unit, a cooling water circulating water pump, and a chilled watercirculating water pump. The waste heat absorption type water chilling water unit, the cooling water circulating water pump and the cooling water system of each waste heat refrigeration unit are connected to form a cooling water circulating subsystem. The waste heat refrigeration units are independent from one another, and each waste heat refrigeration unit works alone. According to one chilled water system, the corresponding waste heat absorption type water chilling unit, the corresponding chilled water circulating water pump and the chilled water system are connected in sequence to from a chilled water circulating subsystem. The waste heat refrigeration units not only are independent from one another and but also are connected with one another.

Description

technical field [0001] The invention relates to a large-scale industrial waste heat refrigeration system and method. Background technique [0002] With the country's increasing emphasis on environmental protection and energy conservation, the application of waste heat recovery and reuse technology has gradually spread. As the main means of utilization, waste heat refrigeration or waste heat recovery technology is valued by the industry. [0003] However, the existing waste heat refrigeration system, cooling water, and chilled water systems are all designed in the form of a combination of centralized water pumps, which results in a significant increase in energy consumption for transportation. At the same time, for large-scale equipment, since there are many refrigeration equipment, generally more than ten, the combination of centralized water pumps will also increase the floor area of ​​the machine room and complicate the power distribution system. However, the large area ...

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Problems solved by technology

[0003] However, the existing waste heat refrigeration system, cooling water, and chilled water systems are all designed in the form of a combination of centralized water pumps, which results in a significant increase in energy consumption for transportation

At the same time, for large-scale equipment, since there are many refrigeration equipment, generally more than ten sets, the combination of centralized water pumps will also increase the floor area of ​​the machine room and complicate the power distribution system.

However, the large area of ​​the machine room will increase the construction cost of the plant or machine room, which sometimes outweighs the gain for the application of waste heat refrigeration technology; the complexity of the power distribution system often leads to increased motor power, interference between power equipment, and transmission High energy consumption, and the control process of the load change of each equipment is complicated, and the control accuracy or effect is not good.

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