Regional cold supply system and its cold step utilizing method

A cooling system and regional technology, applied in the energy-saving field of regional cooling systems, can solve the problems of the secondary pipeline energy consumption of chilled water, the weakening advantage of the initial investment of the secondary pipeline, the limitation of the economic transportation distance of chilled water, and the excessive energy consumption, etc. , to achieve the effect of expanding the economic transportation distance, improving economic benefits and energy utilization efficiency, and expanding the cooling area and scale

Inactive Publication Date: 2007-04-11
SOUTH CHINA UNIV OF TECH
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  • Summary
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Problems solved by technology

[0005] Although the district cooling system has many advantages, compared with the conventional central air-conditioning system, it has the following energy consumption and cost: the secondary chilled water pipeline of the district cooling system (that is, the chilled water between the central refrigeration station and the user) The cold loss of the transmission pipe network), the energy consumption of the secondary pump, the initial investment o...

Method used

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  • Regional cold supply system and its cold step utilizing method
  • Regional cold supply system and its cold step utilizing method
  • Regional cold supply system and its cold step utilizing method

Examples

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Embodiment 1

[0022] Figure 1 is a schematic diagram of the end-use cooling method of a traditional centralized air-conditioning system;

[0023] Figure 2 is a schematic diagram of the cooling method at the end of the traditional fan coil unit + fresh air air conditioning system;

[0024] Fig. 3 is a schematic diagram of the terminal cooling mode of a district cooling system of the present invention;

[0025] As shown in Figure 3, the regional cooling system includes the chilled water supply pipe 1 of the chilled water secondary pipeline, the chilled water return pipe 2, the fresh air cooler 3, the return air cooler 4, and the fresh air cooler 3. The return air coolers 4 are independent, the chilled water supply pipe 1 is connected to the water inlet of the return air cooler 4, the chilled water return pipe 2 is connected to the water outlet of the fresh air cooler 3, and the cooling of the return air cooler 4 The water outlet is communicated with the chilled water inlet of the fresh air s...

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Abstract

The present invention relates to provides one kind of regional cold supply system, which includes one secondary refrigerated water pipeline with refrigerated water supplying pipe, refrigerated water returning pipe, fresh air cooler and returned air cooler. The fresh air cooler and the returned air cooler are independent, the returned air cooler has water inlet connected to the refrigerated water supplying pipe and water outlet connected to the water inlet of the fresh air cooler, and the fresh air cooler has water outlet connected to the refrigerated water returning pipe. The present invention has increased water supply and water return temperature difference of the secondary refrigerated water pipeline, lowered cold loss, lowered pump power consumption and lowered cost.

Description

technical field [0001] The invention relates to an energy-saving technology for a district cooling system, in particular to a district cooling system and a cascaded utilization method for cooling capacity thereof. Background technique [0002] The per capita share of energy in my country is far below the world average level. At this stage, the demand for energy use in my country is growing rapidly, and the contradiction between supply and demand is acute. The only way to solve my country's current energy dilemma is to use energy scientifically and improve energy utilization efficiency. my country's building energy consumption accounts for 30% of the country's total energy consumption, and the unit energy consumption is much higher than that of developed countries; in building energy consumption, HVAC system energy accounts for 65%, and domestic hot water energy accounts for 15%. The energy saving of HVAC system is the key to building energy savin...

Claims

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Application Information

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IPC IPC(8): F24F3/00
Inventor 华贲康英姿
Owner SOUTH CHINA UNIV OF TECH
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