Power cold combined supplying system suitable for recycling temperature varying heat source

A heat source and co-supply technology, applied in energy-saving heating/cooling, machines using waste heat, refrigerators, etc., can solve problems such as inability to work, no implementation methods are given, and no consideration of thermal energy temperature matching, etc., to enhance adaptability, Simplify the condensation process equipment and solve the complex effect of the equipment

Active Publication Date: 2014-01-29
INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the combination of ammonia Rankine cycle and absorption refrigeration technology, Chen Qiang et al. proposed in the paper "Analysis of Thermal Performance of New Micro-turbine Distributed Cooling and Heating Power System" (2013 Proceedings of Engineering Thermophysics Society, paper number: 131226) An ammonia rankine cycle condenses the heat to drive the absorption refrigeration machine, but this process is only suitable for the case where the temperature of the heat source is stable. When the temperature of the heat source drops, the system will not work, and it is suitable for the coupling of the power system and

Method used

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  • Power cold combined supplying system suitable for recycling temperature varying heat source
  • Power cold combined supplying system suitable for recycling temperature varying heat source
  • Power cold combined supplying system suitable for recycling temperature varying heat source

Examples

Experimental program
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Example Embodiment

[0044] Example one

[0045] figure 2 It is a schematic structural diagram of a power-cooling cogeneration system suitable for recovering variable temperature heat sources according to the first embodiment of the present invention. In the power-cooling cogeneration system, valves V02, V04, V05 are closed, valves V01, V03 are opened, and ammonia The mixed working medium flows through the high-pressure generator and the low-pressure generator in sequence, and the condensation discharge drives the single- and double-effect composite lithium bromide absorption refrigerator to operate. When the temperature of the variable temperature heat source is low, it is necessary to increase the phase change evaporation temperature rise range of the ammonia water mixture to facilitate the ammonia water Rankine cycle to match the temperature of the variable temperature waste heat source. For the ammonia-water mixture with a large temperature change range during the condensation process, in order ...

Example Embodiment

[0047] Example two

[0048] image 3 It is a schematic structural diagram of a power and cooling cogeneration system suitable for recovering variable temperature heat sources according to the second embodiment of the present invention. In the power and cooling cogeneration system, valves V01 and V05 are closed, valves V02, V03, and V04 are opened, and ammonia The mixed working fluid only flows through the low-pressure generator, and runs in the manner of a single-effect lithium bromide absorption chiller driven by an ammonia Rankine cycle. Ammonia Rankine cycle condensation process is: Turbine 3 outlet → Hybrid low-pressure generator 6 → Pump 1 inlet. Among them, the low-pressure generator is the condenser of the ammonia water Rankine cycle, and is also the solution generator of the lithium bromide absorption refrigerator. The condensation heat of the ammonia water Rankine cycle drives the lithium bromide absorption refrigerator to work. In the lithium bromide absorption refrige...

Example Embodiment

[0049] Example three

[0050] Figure 4 It is a schematic structural diagram of a power and cooling cogeneration system suitable for recovering variable temperature heat sources according to the third embodiment of the present invention. In the power and cooling cogeneration system, valves V03 and V04 are closed, and valves V01, V02, and V05 are open. The cooling co-supply system drives the operation of the double-effect lithium bromide absorption chiller with the ammonia Rankine cycle. Ammonia Rankine cycle condensation process is: turbine 3 outlet → high pressure generator 5 → pump 1 inlet. Among them, the high-pressure generator is the condenser of the ammonia water Rankine cycle, and is also the high-pressure generator of the lithium bromide absorption refrigerator. The ammonia water mixture of the ammonia water Rankine cycle is condensed in the high-pressure generator 5 to release heat, and the heat of condensation is used to drive the lithium bromide absorption type The r...

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PUM

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Abstract

The invention discloses a power cold combined supplying system suitable for recycling temperature varying heat sources. The power cold combined supplying system suitable for recycling the temperature varying heat sources comprises a pump, an evaporation superheater, a turbine, a generator, a high pressure generator, a multi-heat-source low pressure generator, a condenser, an evaporator, an absorber, a solution pump, a low temperature solution heat exchanger, a high temperature solution heater exchanger and throttle valves V1 to V5, sluice valves V01 to V05 and a tee joint V00; the pump, the evaporation superheater, the turbine, the generator, the high pressure generator, the sluice valves V01 to V05 and the tee joint V00 are formed into an ammonium hydroxide mixed working medium Rankine cycle; the high pressure generator, the multi-heat-source low pressure generator, the condenser, the evaporator, the absorber, the solution pump, the low temperature solution heat exchanger, the high temperature solution heater exchanger and the throttle valves V1 to V5, the sluice valves V01 to V05 and the tee joint V00 are formed into a lithium bromide absorption type refrigerating cycle; the temperature varying heat sources firstly drive the ammonium hydroxide mixed working medium Rankine cycle to provide electric power to exterior and waste heat drives lithium bromide absorption type refrigerating cycle to produce cooling load through condensation heat of the ammonium hydroxide mixed working medium Rankine cycle.

Description

technical field [0001] The invention belongs to the field of medium and low temperature waste heat recovery and power engineering, and in particular relates to a power-cooling combined power supply system with adjustable power-cooling output ratio suitable for recovering variable-temperature heat sources. Background technique [0002] Energy is the foundation of social progress and economic development. Since the reform and opening up, China's economy has continued to grow at a high speed. At the same time, the country's total energy consumption has also increased year by year. In 2011, China's total energy consumption has surpassed that of the United States, becoming the world's largest energy consumer countries, but China's total GDP is much different from that of the United States. The consumption of a large amount of energy has also brought enormous pressure to the national energy supply, energy security and ecological environment. For this reason, the National Twelfth ...

Claims

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Application Information

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IPC IPC(8): F25B15/06F25B27/02F25B49/04F01K27/00
CPCY02B30/625Y02A30/274
Inventor 金红光韩巍陈强林汝谋崔平
Owner INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI
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