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Fin Spacing On An Evaporative Atmospheric Water Condenser

a technology of evaporative atmospheric water condensers and fin spacing, which is applied in the direction of ice removal, heat exhanger fins, lighting and heating apparatus, etc. it can solve the problems of insufficient heat transfer, affecting the effectiveness of coils, and water layers closest to the coils may freez

Inactive Publication Date: 2014-09-18
AVYA GREEN TECH PVT LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The invention is about a new way to optimize the design of evaporators in air conditioning systems. It introduces spacers on the coils that can be used to change the spacing of the fins in different parts of the evaporator. This helps to improve the heat transfer and create a continuous air flow between the fins. The use of different width spacers can also be used to modulate the heat transfer characteristics in different sections of the evaporator. The overall effect is a more efficient and effective air conditioning system.

Problems solved by technology

Fins are used to extend the surface available for heat transfer, and their aspect ratio, material, and attachment to coils affects their effectiveness.
This can be caused by insufficient heat transfer, or insufficient heat transfer prior to air passing over a specific fin, or if the temperature of the fin surface is higher than the dew point temperature of the moist air.
If the water film gets too thick and does not allow enough heat flow, the water layers nearest to the coils may freeze.

Method used

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  • Fin Spacing On An Evaporative Atmospheric Water Condenser

Examples

Experimental program
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Effect test

first embodiment

[0019]Referring to FIG. 1, a view of a three column coil evaporator for a water generating apparatus 10 is shown. There are three serpentine refrigerant coils in which the refrigerant enters on the right and flows downward to three refrigerant exits (best seen in FIG. 3). The rear refrigerant coil 50, the center refrigerant coil 60 and the front refrigerant coil 70 are shown from the bottom of FIG. 1. Initially, as the refrigerant enters the rear refrigerant coil 50, the center refrigerant coil 60 and the front refrigerant coil 70, it is in its coldest condition. Finally, as the refrigerant exits the rear refrigerant coil 50, the center refrigerant coil 60 and the front refrigerant coil 70, it is in its warmest condition. Conventional methods are employed to cool the refrigerant in these closed loop refrigerant coils.

[0020]Surrounding the rear refrigerant coil 50, the center refrigerant coil 60 and the front refrigerant coil 70 is a plurality of fins, individually numbered fin eleme...

second embodiment

[0037]Referring to FIG. 2, a view of a three column coil evaporator for a water generating apparatus 10′ is shown. In this embodiment the top refrigerant coil 50′, the center refrigerant coil 60′ and the bottom refrigerant coil 70′ are shown. In this embodiment the top refrigerant coil 50′ has twelve spacers 80′ placed along its length. Additionally, the bottom refrigerant coil 70′ has twenty-four spacers 82′ placed along its length.

[0038]Except for the leftmost spacer 80′ on rear refrigerant coil 50′ each pair of spacers 80′ has a fin of the configuration of group 1 intermediately located. At the intersection of each spacer 80′ a fin element is located. Referring to the top refrigerant coil 50′, fins 1′-12′ are intermediate each of the spacers 80′ and each fin selected from the fins of the configuration of group 1. The three refrigerant coils (50′, 60′, 70′) have fins 1′-12′ mounted thereon, each spaced the width of one of the spacers 80′.

[0039]Similarly to the embodiment shown in ...

third embodiment

[0044]Referring now to FIG. 4, a view of a three column coil evaporator of a water generating apparatus 200 is shown. A first set of wider spacers 215 are placed on the rear refrigerant coil 210. A second set of smaller width spacers 222 are placed on the center refrigerant coil 220. A third set of the same smaller width spacers 232 are placed on the front refrigerant coil 230. The second set of smaller width spacers 222 are essentially the same width as the third set of smaller width spacers 232.

[0045]The rear refrigerant coil 210 shows twelve spacers 215. The spacers 215 are of equal width. These spacers 215 are not limited to twelve and would extend the length of the horizontal portion of the rear refrigerant coil 215.

[0046]The center refrigerant coil 220 shows twenty-four smaller spacers 222. The smaller spacers 222 are of equal width. These smaller spacers 222 are about ½ the width of the larger spacers 215.

[0047]The front refrigerant coil 230 includes twenty-four smaller space...

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Abstract

An improvement in atmospheric evaporative water condenser is disclosed. The apparatus includes tubes through which a refrigerant would pass and a variety of generally rectangular or circular fins are in contact with the tubes which causes the fins to cool. This permits water in its vapor form which exists in atmospheric air to condense on the fins and the condensate is collected as potable water. The improvement includes a plurality of different width spacers which are toleranced to be placed over the tubes and secured in desired positions. The fins are placed between the spacers allowing different fin spacing configurations on the apparatus. The different fin configurations optimize airflow for different coil and fin sections and help prevent water flooding or frost buildup on the fins which impair efficiency. Also, the spacers allow the fins to be placed far enough apart that non-frozen condensate does not block the air flow through the space between the fins.

Description

RELATED PATENT APPLICATIONS [0001]This utility patent application claims priority from Provisional Patent Application Ser. No. 61 / 788,718 filed on Mar. 15, 2013 titled “Fin Spacing on an Evaporative Atmospheric Water Condenser”, Provisional Patent Application Ser. No. 61 / 789,372 filed on Mar. 15, 2013, titled “Refrigerant Flow Control For an Evaporative Atmospheric Water Condenser”, and Provisional Patent Application Ser. No. 61 / 831,231 filed on Jun. 5, 2013 titled “Refrigerant Flow Control For an Evaporative Atmospheric Water Condenser” all of which are incorporated herein in their entirety.BACKGROUND OF THE INVENTION[0002]Devices which extract water from the atmosphere employ a refrigerant which is pumped through a tortuous pipe with a plurality of fins affixed to the pipe. These fins will cool by action of the refrigerant and water would condense on the fin surface and be collected for use. The efficiency of such devices which remove water from the air is impaired when the water ...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): F28F1/12
CPCF28F1/12F28D1/0477F28D2021/0038F28F1/32F28F17/005F28F2215/04F28F2240/00
Inventor SISTLA, RAMANA VENKATO RAO
Owner AVYA GREEN TECH PVT LTD
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