Heat exchange device for improving efficiency of surface water source heat pump system
A technology of surface water source heat pump and heat exchange device, which is applied in the direction of heat pump, indirect heat exchanger, heat exchanger type, etc., can solve the problems of high operating resistance, difficult heat exchanger, and rarely used, etc., to improve the heat exchange temperature. , the effect of effective large-scale heat exchange area, good promotion prospects and application value
Pending Publication Date: 2022-06-17
青岛新欧亚能源有限公司
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Problems solved by technology
Due to the high running resistance of standardized single heat exchangers, it is difficult to realize the series connection of standardized single heat exchangers, so a high-power high-pressure pump must be used to drive the heat exchange medium to overcome the flow resistance; or by setting an intermediate buffer heat exchange medium storage box, intermediate force pump to overcome flow resistance, but this method is rarely used in practical engineering applications
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[0066] In this embodiment, the heat exchange device of the present invention utilizes the sewage source of a certain sewage treatment plant as a heat supply heat source for urban heating. The sewage treatment plant discharges 30,000 tons of treated sewage every day. The minimum temperature in winter is 12℃, the freezing point of sewage is 0℃, and the density is 1.0kg / m2. 3 , the specific heat is 4.18kj / kg, 4.18×10 6 J / m 3 .
[0067] It is set that the minimum discharge temperature after extracting heat energy from the sewage source can reach 3°C, which is 3°C higher than the freezing point. Then the maximum environmental heating power is [30000 / (24×3600)]×(12-3)×4.18×10 6 J / m 3 =1.31×10 7 W=13.1 MW. In the heat exchange device of the present invention, a centrifugal heat pump unit can be used for heat supply, and the operating COP of the heat pump host can be 3.6, so the maximum heating power is 13.1×(3.6 / (3.6-1))=18.1MW, that is, the maximum heating power The heating c...
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The invention discloses a heat exchange device for improving the efficiency of a surface water source heat pump system, which comprises an open type tunnel structure with a gradient formed along the length direction, and the gradient drives water from a natural water source to flow in the open type tunnel structure; the shell-and-tube heat exchanger is arranged in the open-type tunnel structure, and a heat exchange medium flows in a shell tube of the shell-and-tube heat exchanger; the inlet end heat exchange medium storage tank is connected with the inlet end of the tubular heat exchanger; the outlet end heat exchange medium storage tank is connected with the outlet end of the tubular heat exchanger; the heat pump system is respectively connected with the inlet end heat exchange medium storage box and the outlet end heat exchange medium storage box; and the circulating pump is used for pumping the heat exchange medium from the heat exchange medium storage box at the inlet end into the shell-and-tube heat exchanger and then pumping the heat exchange medium from the shell-and-tube heat exchanger into the heat exchange medium storage box at the outlet end.
Description
technical field [0001] The invention relates to a heat exchange device, in particular to a surface water heat exchange device. Background technique [0002] As we all know, the technical core of the surface water ground source heat pump system is the heat exchange between the natural water source and the heat exchange medium. In the prior art, closed, standardized and miniaturized high-efficiency heat exchange equipment is usually used for the surface water source off-body heat exchange system that extracts the surface water source water body and conducts heat exchange in an independent heat exchange device. The common equipment includes: plate type Tube heat exchange unit, shell and tube heat exchange unit, etc. [0003] According to the idea of batch, large-scale and standardized equipment manufacturing, the manufacturing of heat exchange equipment has gradually become smaller and more efficient. The method adopted by the standardized heat exchange equipment for heat e...
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IPC IPC(8): F28D7/16F28D7/08F28F1/10F28F27/00F25B30/06
CPCF28D7/1653F28D7/082F28F1/10F28F27/00F25B30/06
Inventor 赵宗波赵铭李洪利张文李凌飞芦照华
Owner 青岛新欧亚能源有限公司