A kind of marine frozen water centralized cooling system with auxiliary cooling source and centralized cooling method

Abstract

The invention relates to a sea-chilled-water concentrated cold supplying system with an auxiliary cold source and a concentrated cold supplying method. A similar system and method with the high energy utilization rate and the remarkable energy-conservation and emission-reduction effect do not exist at present. The sea-chilled-water concentrated cold supplying system comprises a water taking module, a rubber pipe with a steel ring and a cold extracting module. The sea-chilled-water concentrated cold supplying system is characterized in that the water taking module comprises a seawater pump, a seawater corrosion prevention pipe, a water tank overflow pipe, an adjusting water tank, a water tank pump, a convey pipe, a water amount regulating valve and a water tank pump frequency converter; and the water taking module is connected with the cold extracting module through the steel ring. The concentrated cold supplying method includes the steps that the seawater pump conveys low temperature seawater to the adjusting water tank through the seawater corrosion prevention pipe; the low temperature seawater is directionally conveyed to the cold extracting module through the water tank pump; and the low temperature seawater enters a front-arranged heat exchanger through the rubber pipe with the steel ring to carry out heat exchanging, and coil clean backwater is converted into clean water with the temperature ranging from 7 DEG C to 12 DEG C and flows out of the front-arranged heat exchanger. The sea-chilled-water concentrated cold supplying system is stable in running, high in energy utilization rate, flexible in using and remarkable in energy-conservation and emission-reduction effect.

Description

technical field [0001] The invention relates to a marine frozen water centralized cooling system and a centralized cooling method, in particular to a marine frozen water centralized cooling system and a centralized cooling method with an auxiliary cooling source. Background technique [0002] There are huge cold sources in marine resources. For example, the cold water mass of the Yellow Sea contains cold sources. The cold water mass of the Yellow Sea is formed after the surface layer of the Yellow Sea is cooled and sinks in winter. Therefore, the temperature is very low, and the central temperature is only 5 -8°C, the sea surface warms up gradually from spring, and a thermocline appears at a depth of 5-7m, which blocks the heat exchange between the surface seawater and the bottom seawater, effectively ensuring that the cold water in the lower layer is not affected by the temperature increase in the upper layer , in summer, the surface water temperature is about 28°C, while t...

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Problems solved by technology

[0003] There are also some technologies that utilize cold sources in the ocean now. For example, the Chinese patent whose publication date is May 16, 2007 and whose publication number is CN1963320 discloses a building area air-conditioning system in which the ocean-cooled tap water is used as a refrigerant. The air-conditioning system in the building area where cold tap water is used as the refrigerant includes seawater filters, water intake pipes, flow sensors, stop valves, seawater multi-stage centrifugal pumps, three-way valves, fast filters, flocculation tanks, secondary fast filters, and underground seawater reservoirs , seawater pumps, plate heat exchangers, water delivery pumps, underground cold water reservoirs, water distribution pumps, air cooling processors, clean water tanks, butterfly valves and return pipes, will be treated by quick filter tanks, flocculation tanks and secondary quick filter tanks The cold seawater exchanges heat with tap water in the plate heat exchanger, and uses the original municipal underground pipe network as the tap water delivery pipeline to make it play the dual functions of water delivery and cold delivery, making full use of the cooling capacity of the subsurface seawater, eliminating the need to consume electricity and Maintain the cold source of the air conditioning system to save electricity consumption. However, the structural design of the air conditioning system in the building area where the marine cooling tap water is used as the refrigerant is not reasonable enough, and tap water needs to be consumed

Another example is that the publication date is March 27, 2013, and the publication number is CN102997493A in the Chinese patent, which discloses a large-scale comprehensive utilization system of the Yellow Sea cold water mass. The large-scale comprehensive utilization system of the Yellow Sea cold water mass includes extracting the Yellow Sea cold water mass to The pumping control unit above sea level is used as a fresh water circulation system for cooling and refrigeration equipment, a heat exchange unit for exchanging heat between seawater and fresh water, and a breeding unit for seawater after heat exchange; The unit transports seawater, and the fresh water after heat exchange is transported to the fresh water circulation system through the fresh water heat pump controller. Through the low-cost pumping control technology, the combination of large-scale heat exchange technology with zero energy consumption and water source heat pump technology, it has achieved summer for the city. The purpose of centralized large-scale cooling, but the large-scale comprehensive utilization system of the Yellow Sea cold water mass provides a concept, no specific structure is disclosed

[0004] To sum up, there is no marine chilled water centralized cooling system and centralized cooling method with reasonable structural design, stable operation, high energy utilization rate, and significant energy saving and emission reduction effects.

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