Thermal power coproduction energy supply method and system

A technology for cogeneration and cogeneration units, applied in hot water central heating systems, heating systems, steam central heating systems, etc. Problems such as central heating load pressure of hot water radiators in thermal power plants, to achieve the effect of reducing heat load, increasing economic benefits, and reducing heat transmission loss

Inactive Publication Date: 2010-01-13
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Air-conditioning heat pumps consume electricity for heating and are energy-saving and efficient, but because of the high electricity rate, they are at an absolute cost disadvantage compared with hot water radiator heating
As a result, residents are unwilling to use air-conditioning heat pumps for heating, which also increases the load pressure on the central heating of hot water radiators in thermal power plants, resulting in a huge difference in heat load between thermal power plants in winter and summer

Method used

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  • Thermal power coproduction energy supply method and system
  • Thermal power coproduction energy supply method and system
  • Thermal power coproduction energy supply method and system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Such as Image 6 As shown, in the embodiment of the combined heat and power energy supply system, the combined heat and power unit is connected to the air conditioner 1 to the air conditioner n through the power line power supply network, and the air conditioner 1 to the air conditioner n are connected to the air conditioner meter 1 in a one-to-one correspondence To the air-conditioning meter n, the air-conditioning meter 1 to the air-conditioning meter n are connected to the remote meter reading device through the power line.

[0029]The combined heat and power unit is connected to the radiator 1 to radiator n through the pipeline heating network, and the radiator 1 to radiator n is connected in a one-to-one correspondence with heat consumption meter 1 to heat consumption meter n, and heat consumption meter 1 The heat consumption meter n is connected to the remote meter reading device through the power line.

[0030] The remote meter reading device is respectively con...

Embodiment 2

[0064] According to the cogeneration supply capacity of thermal power plants, the ratio of central heating users to electric-driven air-conditioning heating users among residential heating heat load users in winter is stipulated. Some users do not participate in central heating, but use high COP value air-conditioning heating; while other users still choose to use central heating. And by Figure 7The shown computer control device 106 controls the heat and power cogeneration unit to work near the optimum operating point power.

[0065] The heat and power cogeneration units of the thermal power plant produce electric energy and heat energy; according to the capacity of the thermal power plant to produce electric energy and heat energy, the total heat load of the heating heat load user of the thermal power plant is obtained; the heating heat load users of the thermal power plant are divided into air conditioning power consumption heating users and The heat consumption heating us...

Embodiment 3

[0071] Power generation and heating power must satisfy a certain functional relationship. According to the principle of energy conservation, when the input energy is the same, increasing the power generation will inevitably reduce the heat supply. The total heat supply for heating can be obtained by adding heat pump heating and central heating. The following formula expresses the total heating capacity L h Relationship to other variables:

[0072] L h =COP×E+H

[0073] The winter heating demand load of a residential area is met by a certain type of combined heat and power unit. The functional relationship between the power supply and heating power of the unit is as follows, and the unit is megawatt (MW).

[0074] H=-0.25×E 2 -1.5×E+8

[0075] Take COP=2.5, then:

[0076] -f'(E r )=-(-0.5×E r -1.5) = COP = 2.5

[0077] Get E r = 2

[0078] h r =-0.25×2 2 -1.5×2+8=4

[0079] Then the total heating capacity of the unit is L h，max =2.5×2+4=9

[0080] When the gener...

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Abstract

The invention relates to a thermoelectricity tri-generation method and a system thereof, wherein the system includes a thermoelectricity tri-generation set used for generating the electric energy and the heat energy; an air-condition coupled with the thermoelectricity tri-generation set through the power line and for driving the heat pump to generate the heat energy by the electric energy generated by the thermoelectricity tri-generation set; an air-condition ammeter phase coupling with the air-condition specially used for detecting the power consumption of the heat pump in the air-condition; a control device used for obtaining the electric energy of the thermoelectricity tri-generation set and the optimal working point data generated by the heat energy according to the electric consumption data and the energy consumption, and controlling the operation of the thermoelectricity tri-generation set based on the optimal working point data. Adopting the device, the inhabitant heating users are divided into the air-condition heat pump heating users and the hot water type radiator centralized heating users, and the electric energy and the heat energy are supplied to the heating users by the thermoelectricity tri-generation for the requirement in the winter, which reduces the heat road difference in the summer and waiter, advances the energy source using efficiency and the economical profit of the thermal power plant.

Description

technical field [0001] The present invention relates to cogeneration technology of thermal power plants, in particular to heating and billing technology for cogeneration, and specifically to a cogeneration energy supply method and system. Background technique [0002] Cogeneration of heat and power refers to the technology of using the waste heat discharged after ordinary thermal power plants generate electricity to provide heat for industrial and domestic heating. This technology can greatly improve the total thermal efficiency of fuel. In the prior art, the thermal efficiency of general thermal power plants is about 30-35%, while the comprehensive thermal efficiency of cogeneration can reach 60-80%. [0003] There is an obvious gap between residents' winter and summer heat load consumption demand. In my country's traditional winter residents' central heating method, the combined heat and power generation operates according to the physical principle of "heat determines elec...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24F1/00F25B30/00F01K17/02F24D1/00F24D3/00F24D19/10
CPCY02B30/16Y02E20/14Y02B30/00
Inventor 吴锴龙虹毓赵媛成永红
Owner XI AN JIAOTONG UNIV
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