Combined heating power and cooling apparatus with energy storage type adapted to an active distribution network and its method

Patent metadata

Field	Value
Publication number	US-10480867-B2
Application number	US-201515319356-A
Country	US
Kind code	B2
Filing date	Dec 10, 2015
Priority date	Feb 12, 2015
Publication date	Nov 19, 2019
Grant date	Nov 19, 2019

Abstract

The Application relates to a combined heating power and cooling apparatus with energy storage for an active distribution network and its operating method. The apparatus is comprised of a generation apparatus, a generator, a waste heat recovering and absorbing heat pump, a high temperature flue gas-water heat exchanger, a medium temperature flue gas-water heat exchanger, a low temperature flue gas-water heat exchanger, an energy storing electric heat pump, a high temperature energy storing canister, a low temperature energy storing canister, a cooling tower, a number of circulating water pumps and a number of valves. The operating method changes the traditional operation modes of the system “determining electricity based on heat” and “determining electricity based on cooling”, causes the system to regulate power of the generated electricity on grid, participate in the regulation of grid load, solve the problem of a limited ability of generation peak regulation due to the inter-coupling of power generation, heat supply and cooling supply.

First claim

The invention claimed is:

1. A combined heating power and cooling apparatus with energy storage type adapted for an active distribution network, wherein the apparatus comprises a generation apparatus, a generator, an energy storing electric heat pump, a waste heat recovering and absorbing heat pump, a high temperature flue gas-water heat exchanger, a medium temperature flue gas-water heat exchanger, a low temperature flue gas-water heat exchanger, a high temperature energy storing canister, a low temperature energy storing canister, a cooling tower, a number of circulating water pumps, and a number of valves, wherein the generation apparatus is connected to the generator to power the generator, and the generator is connected to the energy storing electric heat pump for driving the energy storage electric heat pump to operate; and wherein:
a flue gas outlet of the generation apparatus is connected to a generator flue gas inlet of the waste heat recovering and absorbing heat pump, a generator flue gas outlet of the waste heat recovering and absorbing heat pump is connected to a flue gas inlet of the high temperature flue gas-water heat exchanger, a flue gas outlet of the high temperature flue gas-water heat exchanger is connected to a flue gas inlet of the medium temperature flue gas-water heat exchanger, a flue gas outlet of the medium temperature flue gas-water heat exchanger is connected to a flue gas inlet of the low temperature flue gas-water heat exchanger, and a flue gas outlet of the low temperature flue gas-water heat exchanger is connected to an external environment;
a water side outlet of a first evaporator of the energy storing electric heat pump is connected to a water side inlet of the low temperature flue gas-water heat exchanger sequentially through a first circulating water pump and a first valve, a water side outlet of the low temperature flue gas-water heat exchanger is connected to a water side inlet of the first evaporator of the energy storing electric heat pump through a second valve; a water side inlet of a condenser of the energy storing electric heat pump is connected to a water side outlet of the high temperature energy storing canister sequentially through a third valve and a second circulating water pump, and a water side outlet of the condenser of the energy storing electric heat pump is connected to a water side inlet of the high temperature energy storing canister through a fourth valve; a water side inlet of a second evaporator of the energy storing electric heat pump is connected to a water side outlet of the low temperature energy storing canister through a fifth valve, and a water side outlet of the second evaporator of the energy storing electric heat pump is connected to a water side inlet of the low temperature energy storing canister through a third circulating water pump and a sixth valve;
a condenser and absorber side inlet of the waste heat recovering and absorbing heat pump is connected to three inlet branches in parallel, wherein a first inlet branch is connected to a water port of a heat supply, a second inlet branch is connected to a water outlet of the cooling tower through a seventh valve, a third inlet branch is connected to a water supply port of a cooling supply, and the third inlet branch is further connected to four branched inlet branches in parallel, wherein a first branched inlet branch is connected to a water side inlet of the high temperature flue gas-water heat exchanger through an eighth valve, a second branched inlet branch is connected to the water side inlet of the high temperature energy storing canister sequentially through a ninth valve, a fourth circulating water pump and a tenth valve, a third branched inlet branch is connected to the water side inlet of the low temperature energy storing canister through an eleventh valve, and a fourth branched inlet branch is connected to an outlet of the second valve through a twelfth valve; a condenser and absorber side outlet of the waste heat recovering and absorbing heat pump is connected to three outlet branches in parallel, wherein a first outlet branch is connected to an inlet of the cooling tower through a thirteenth valve, a second outlet branch is connected to a water supply port of heat supply, and a third outlet branch is connected to three branched outlet branches in parallel through a fourteenth valve, wherein a first branched outlet branch is connected to a water side outlet of the high temperature flue gas-water heat exchanger through a fifteenth valve, a second branched outlet branch is connected to an inlet of the fourth circulating water pump, a third branched outlet branch is connected to an inlet of the eleventh valve, and an inlet of the fourteenth valve is further connected to the water side outlet of the high temperature energy storing canister through a sixteenth valve;
the water side outlet of the high temperature flue gas-water heat exchanger and a water side outlet of the medium temperature flue gas-water heat exchanger are connected to a water side inlet of an evaporator of the waste heat recovering and absorbing heat pump sequentially through a seventeenth valve and a fifth circulating water pump; an inlet of the fifth circulating water pump is further respectively connected to three branched branches through an eighteenth valve, wherein a first branched branch is connected to a water port of a cooling supply, a second branched branch is connected to an outlet of the first circulating water pump through a nineteenth valve, and a third branched branch is connected to an outlet of the low temperature energy storing canister sequentially through a twentieth valve and a sixth circulating water pump; and
a water side outlet of the evaporator of the waste heat recovering and absorbing heat pump is connected to inlets of a twenty-first valve and a twenty-second valve in parallel, an outlet of the twenty-first valve is connected to the water supply port of the cooling supply, an outlet of the twenty-second valve is connected to the water side inlet of the high temperature flue gas-water heat exchanger, a water side inlet of the medium temperature flue gas-water heat exchanger and a water port for domestic hot water in parallel, and the twenty-second valve is connected to a seventh circulating water pump in series before the water port for domestic hot water; an outlet of the seventh circulating water pump is further connected to the water side inlet of the low temperature flue gas-water heat exchanger, a water supply port for domestic hot water is connected to the water side outlets of the high temperature flue gas-water heat exchanger, the medium temperature flue gas-water heat exchanger, and the low temperature flue gas-water heat exchanger, respectively.

2. The combined heating power and cooling apparatus with energy storage type adapted for the active distribution network of claim 1 , wherein the generation apparatus uses one of a micro gas turbine, a gas internal combustion engine, and a gas turbine.

3. The combined heating power and cooling apparatus with energy storage type adapted for the active distribution network of claim 2 , wherein each of the high temperature flue gas-water heat exchanger, the medium temperature flue gas-water heat exchanger, and the low temperature flue gas-water heat exchanger employs a wall partitioning heat exchanger or a direct contact heat exchanger, wherein the direct contact heat exchanger utilizes an empty tower heat exchanger, a tower plate heat exchanger, or a filler heat exchanger.

4. An operating method of the combined heating power and cooling apparatus with energy storage type of claim 3 , comprising the following contents: the apparatus operates during electrical load valleys, means and peaks in winter and summer through different combinations of valve opening and closing:
1) the combined he

Assignees

• Univ Tsinghua

Inventors

• Zhao Xiling
• Fu Lin
• Zhang Shigang
• Zhang Xingmei

Classifications

• F01K17/025

  in combination with at least one gas turbine, e.g. a combustion gas turbine · CPC title

• F28F27/02

  for controlling the distribution of heat-exchange media between different channels ({static flow control means in header boxes F28F9/026}; arrangements of guide plates or guide vanes F28F9/22, F28F25/12) · CPC title

• F25B27/02

  using waste heat, e.g. from internal-combustion engines · CPC title

• F28C1/00

  Direct-contact trickle coolers, e.g. cooling towers (building construction E04H5/12; enclosed spaces cooled by trickle F25; components parts of trickle coolers F28F25/00; {indirect-contact cooling towers F28B1/06}) · CPC title

• F25B30/00

  Heat pumps (F25B1/00-F25B25/00, F25B29/00 take precedence) · CPC title