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Three-stage series internal and external ice melting ultralow-temperature cooling equipment and using method

A three-stage series, ultra-low temperature technology, used in mechanical equipment, lighting and heating equipment, applications, etc., can solve the problems of low efficiency of chilled water supply and cooling, and can not achieve internal ice melting, achieve fast ice melting and improve refrigeration. Efficiency, the effect of reducing operating energy consumption and cost

Pending Publication Date: 2021-12-03
HANGZHOU RUNPAQ SCI & TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, when the existing ice-storage air-conditioning system operates in some working conditions (for example, when the main engine is operating in a single cooling condition), the temperature difference of the chilled water is small, resulting in low cooling transmission and distribution efficiency. At the same time, the current ice storage system is generally designed as an internal The ice-melting system or the external ice-melting system cannot realize the combination of internal ice-melting and external ice-melting processes to meet the goal of off-peak operation under peak electrical load conditions

Method used

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  • Three-stage series internal and external ice melting ultralow-temperature cooling equipment and using method

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Embodiment 1

[0044] Such as figure 1 As shown, the present embodiment provides a three-stage series-connected internal and external ice-melting ultra-low temperature cooling equipment, including a chilled water circulation system, a base load refrigeration system, a dual-working mode refrigeration system, and an ice-melting system; the chilled water circulation system includes a water collector 1 , the water separator 4 and the chilled water circulation pump 5 arranged between the water collector 1 and the water separator 4; the water collector 1, the chilled water circulation pump 5 and the water separator 4 pass through The chilled water circulation pipeline is connected; the inlet end and the outlet end of the base load refrigeration system are connected with the chilled water circulation pipeline through the base load pipeline; the dual-working mode refrigeration system includes a main plate heat exchanger 6, a duplex condition host machine 9 and solution pump 8; the main plate heat ex...

Embodiment 2

[0049] This embodiment provides a method for using the ultra-low temperature cooling equipment based on the three-stage series-connected internal and external ice melting in Embodiment 1, including the following working conditions:

[0050] In the first working condition, the dual-working-condition main engine 9 makes ice, the dual-working-condition main engine 9, the ice storage device 10, and the solution pump 8 are in the running state, the second valve V2 and the third valve V3 are opened, and the base-load main engine 3 and the main engine board are replaced. Heater 6, ice-melting plate heat exchanger 7, ice-melting pump 11, base load chilled water pump 2, and chilled water circulation pump are out of service, the first valve V1, the fourth valve V4, the fifth valve V5, the sixth valve V6, the The seventh valve V7, the eighth valve V8 and the ninth valve V9 are closed;

[0051] In the second working condition, the dual-working-condition main engine 9 makes ice and supplie...

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Abstract

The invention discloses three-stage series internal and external ice melting ultralow-temperature area cooling equipment and a using method, and relates to the technical field of ultralow-temperature cooling equipment. The three-stage series internal and external ice melting ultralow-temperature area cooling equipment comprises a chilled water circulation system, a base load refrigeration system, a double-working-condition refrigeration system and an ice melting system, a plurality of cooling conditions by means of three stages arranged in series, the peak electricity consumption in the cooling process is reduced, peak-avoiding operation is achieved, the cooling cost is reduced, and the pipe network transmission and distribution energy consumption and investment are reduced. A base-load host and a double-working-condition mainboard type heat exchanger are connected in series so that the temperature of chilled water can be reduced to 5 DEG C or below, a ice melting plate type heat exchanger can reduce the temperature of the chilled water to 2 DEG C or below, therefore when the chilled water is output through a water segregator, a larger temperature difference can be formed between the chilled water and a water collector, and large-temperature-difference rapid cooling is achieved.

Description

technical field [0001] The invention relates to the technical field of ultra-low temperature cooling equipment, in particular to a three-stage serial series ice-melting ultra-low temperature cooling equipment with internal and external melting and a use 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, when the existing ice-storage air-conditioning system operates in some working conditions (for example, when the main engine is operating in a single cooling condition), the temperature difference of the chilled water is small, resulting in low cooling transmission and distribution efficiency. At the same...

Claims

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Application Information

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IPC IPC(8): F24F5/00F24F11/84F24F13/00F24F11/89F24F13/30
CPCF24F5/0017F24F11/84F24F13/00F24F11/89F24F13/30Y02E60/14
Inventor 刘月琴
Owner HANGZHOU RUNPAQ SCI & TECH CO LTD