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Multi-energy-storage efficient building type natural gas distributed energy system and running method

A distributed energy and multi-energy storage technology, which is applied in the field of natural gas distributed energy systems, can solve the problems of inapplicable building distributed energy systems, large footprint of water cold storage, inapplicable waste heat cooling, etc., to reduce capacity Redundancy, saving space and investment, small footprint effect

Pending Publication Date: 2018-11-20
CHINA HUADIAN ENG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Commonly used natural gas distributed energy systems generally adopt the form of water storage and ice storage. When the cooling load is low, the cold storage tank is used to store the cold water at 7°C. When the cooling load is at a peak, the cold water is provided to the cooling users to release the cold. However, water cooling requires a large footprint and is not suitable for compact building-type distributed energy systems; ice storage uses electricity to store water into ice, and uses ice to melt and absorb heat when the cooling load peaks The principle of refrigeration, however, ice storage is not only complex equipment, high investment, large footprint, but also consumes a lot of electricity, it is not suitable for this system to use waste heat for cooling

Method used

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  • Multi-energy-storage efficient building type natural gas distributed energy system and running method

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Embodiment 2

[0032] Embodiment 2: as Figure 1-Figure 3 As shown, the high-efficiency building-type natural gas distributed energy system with multiple energy storage includes an internal combustion engine 1, a lithium bromide unit 2, a phase change heat storage subsystem 3, a battery energy storage subsystem 4, a solar power generation subsystem 5, an electricity user 6, and a cooling user 7 and domestic hot water users 9, the solar power generation subsystem 5, the battery energy storage subsystem 4, the internal combustion engine 1, the lithium bromide unit 2, and the phase change heat storage subsystem 3 are connected in sequence through pipelines, and the internal combustion engine 1 is also connected through pipelines Connected with an electric user 6, the electric user 6 is also connected to a battery energy storage subsystem 4 through a pipeline, the lithium bromide unit 2 is also connected to a domestic hot water user 9 through a pipeline, and the lithium bromide unit 2 is also con...

Embodiment 3

[0034] Embodiment 3: as Figure 1-Figure 3 As shown, the operation method of the high-efficiency building-type natural gas distributed energy system with multiple energy storages adopts the aforementioned high-efficiency building-type natural gas distributed energy system with multiple energy storages, including the following process:

[0035] S1, power generation is divided into internal combustion engine 1 and solar power generation sub-system 5 for power generation, in which part of the power generated by internal combustion engine 1 is directly supplied to electricity users 6, and the other part is stored in battery energy storage subsystem 4; power generated by solar power generation sub-system 5 first enters battery storage The energy subsystem 4 stores it, and supplies it to the electricity user 6 during the peak period of electricity consumption;

[0036] S2, after the internal combustion engine 1 generates power, the flue gas at its tail enters the lithium bromide uni...

Embodiment 4

[0037] Embodiment 4: as Figure 1-Figure 2 As shown, the operation method of the high-efficiency building-type natural gas distributed energy system with multiple energy storages adopts the aforementioned high-efficiency building-type natural gas distributed energy system with multiple energy storages, including the following process:

[0038] S1, power generation is divided into internal combustion engine 1 and solar power generation sub-system 5 for power generation, in which part of the power generated by internal combustion engine 1 is directly supplied to electricity users 6, and the other part is stored in battery energy storage subsystem 4; power generated by solar power generation sub-system 5 first enters battery storage The energy subsystem 4 stores it, and supplies it to the electricity user 6 during the peak period of electricity consumption;

[0039] S2, after the internal combustion engine 1 generates power, the flue gas at its tail enters the lithium bromide uni...

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Abstract

The invention relates to a natural gas distributed energy system, in particular to a multi-energy-storage efficient building type natural gas distributed energy system and a running method. A solar power generation subsystem, a battery energy storage subsystem, an internal combustion engine, a lithium bromide unit and a phase change heat storage subsystem in the system are sequentially connected through a pipeline. The internal combustion engine is further connected with a power user through a pipeline, the power user is further connected with the battery energy storage subsystem through a pipeline, the lithium bromide unit is further connected with a domestic hot water user through a pipeline, and the lithium bromide unit is further connected with a cold user through a pipeline. The system is simple in structure, easy to transform, compact and small in occupied area, and has the functions of phase change heat storage and battery power storage. The invention further provides a runningmethod of the multi-energy-storage efficient building type natural gas distributed energy system, the smoke waste heat is sufficiently utilized, triple generation of power supply, refrigeration and heat supply can be achieved, and the comprehensive energy utilization efficiency of the system is improved by about 3%.

Description

technical field [0001] The invention relates to a natural gas distributed energy system, in particular to a multi-energy storage high-efficiency building-type natural gas distributed energy system and an operating method. Background technique [0002] At present, the building-type distributed energy system uses the internal combustion engine as the main engine, and the lithium bromide unit is mostly used as the waste heat utilization equipment. However, due to the limited utilization of the flue gas by the refrigerator itself, the flue gas temperature at the outlet of the lithium bromide unit is still very high, and it can reach 140 in summer. Around 110°C in winter, these flue gases are currently discharged directly into the atmosphere through chimneys in most building-type distributed energy systems, without cascading energy utilization, resulting in a large amount of waste of heat. At the same time, most building-type distributed energy systems do not consider adding rene...

Claims

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Application Information

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IPC IPC(8): F25B15/06F25B27/02F02B63/04H02J3/32H02J3/38
CPCH02J3/383H02J3/32F02B63/04F25B15/06F25B27/02Y02B30/625Y02A30/274Y02E10/56Y02T10/12Y02B10/10
Inventor 江婷胡永锋李建标徐静静宋洪涛张爱平邓亚男张瑞寒朱文堃
Owner CHINA HUADIAN ENG