US3291203A - System for heating and cooling chambers - Google Patents

Description

Dec. 13, 1966 E. scum: y y

SYSTEM FOR HEATING AND COOLING CHAMBERS Filed March 6, 1964 3 Sheets-Sheet 1 5 /f6 INVENTOR.

[wwzp l Vway 47mm/a 4 Dec. 13, 1966 E,,W,GQU(;1H 3,29L2Q3 SYSTEM FOR HEATING AND 000mm CHAMBERS Filed March a, 1964 a Sheets-Sheet 2 I N VE N TOR. fax/mp0 H/ 60% Dem 11%, WW E. W. GOUGH m mm SYSTEM FOR HEATING AND COOLING CHAMBERS Filed March 6, 1964 5 Sheets-Sheet 3 IN VENTOR. .bwaw M/Gawy wif djilk United States Patent 3,291,203 SYSTEM FOR HEATING AND COOLING CHAMBERS Edward W. Gough, 5757 Ravenspur Road, Palos Verdes, Calif. Filed Mar. 6, 1964, Ser. No. 349,898 8 Claims. (Cl. 165-85) This invention relates to a system to heat or cool chambers from a central unit.

The invention is useful in heating or cooling motor vehicles, hotels, motels, and the like, and particularly useful in conditioning motor vehicles in drive-in theaters, and the invention is described with respect to that use,

The modern day drive-in theater has had difficulty in attracting customers during periods of uncomfortably warm or cold weather in selected portions of the country. Attempts have been made to at least provide individual heating units for automobiles, and to date, these heating units have not been widely accepted as being a solution to the problem. Most generally a resistance heating unit in combination with a fan have been used, which at best is only a partial answer to the problem. These heating units have posed a problem in safety, especially during wet weather, since the electrical leads must be necessarily trailed from an outlet to each automobile, and the constant electrical hazard has been troublesome.

Air conditioning has not been available for drive-in theaters due to the difiiculty and the expense of providing conventional air conditioning units tfor each vehicle. The result has been a marked drop in attendance to drivein theaters during periods of extereme heat in those parts of the country where daytime temperatures do not drop substantially after sundown.

Central systems for heating and cooling units such as ofiice buildings and large hotels have proven to be quite economical and satisfactory when the number of units is quite appreciable. These known central conditioning units are quite immense, requiring an extremely large amount of capital and equipment for the initial installation. Prior to the present invention, central heating or cooling has not been adapted to relatively small numbers of units in the category of small hotels, motels, hospitals and the like.

The present invention combines the advantages of central heating and cooling and extends them to consumers that have a need for portable units and a low cost central system with minimum cost and minimum installation. One of the more attractive advantages of the present invention is the lack of electrical connections in and around the individual conditioning units which are installed in such things as automobiles for drive-ins, or in individual motel or hospital rooms.

In accordance with my present invention, I have provided a central source of heating or cooling fluid directed to individual conditioning units that may be temporarily or permanently installed within chambers. The invention extends to the method of heating or cooling a chamber by pumping a pressurized working fluid, that has been heated or cooled to a conditioning unit where the pres surized fluid then serves the dual purpose of providing the thermal energy to be exchanged and driving an air moving device which moves air over the heat exchanger and distributes the conditioned air about the chamber.

In terms of structure, the invention includes individual conditioning units which have coils therein in the form of heat exchangers. A turbine mounted in proximity to the coils is driven by the heated or cooled pressurized fluid, and in turn drives a blower which directs forced air over the coils to be heated or cooled and thereafter distributed about the chamber to be conditioned.

3,291,203 Patented Dec. 13, 1966 Further, my invention encompasses a central system for heating and cooling a series of chambers. The system includes a storage vessel of fluid which is heated or cooled, and pressurized into a series of conduits that are connected to the individual conditioning units described above. The units are portable and may be installed at will in any type of chamber. The flow of fluid to the conditioning unit may be regulated by a manually ad justed flow regulating means at each remote unit and also may be controlled by an automatic regulating means including a temperature sensitive element disposed remote from the unit to thereby automatically regulate the heated air flow.

It is to be understood that the term fluid as used herein extends to liquids and gases, and any combination of the two in any state. The term includes fluids from the field of cryogenics and extends into superheated gases.

While the present invention is especially adaptable for heating and cooling systems in new and existing drive-in theaters, it is to be understood that the invention extends to installations in residences, motels, hotels, hospitals, and the like.

Other advantages and features of the invention Will be more 'fully understood from the following detailed description and the accompanying drawings in which:

FIG. 1 is a schematic illustration of the present invention illustrating a central storage of heated or cooled fluid and one of a plurality of conditioning units;

FIG. 2 is a front elevation of an individual conditioning unit constructed according to the present invention and illustrated partially in cross-section taken along lines 22 of FIG. 3;

FIG. 3 is a cross-sectional view of the conditioning unit illustrated in FIG. 2, the section taken along lines 3-3 of FIG. 2;

FIG. 4 is a typical cross-sectional view of a valve used in the present invention; and

FIG. 5 is a schematic illustration of the conditioning unit constructed according to the present invention controlled by thermostatic device.

Referring to FIG. 1, an insulated tank Ill is filled with a fluid 12 and is operatively engaged to a means 14 for varying the amount of heat or cold retained by the fiuid 12. An inlet conduit 16 extends from tank 10 and is connected to an individual conditioning unit 18 disposed remotely from tank 10. An individual conditioning unit 18 is illustrated, however, in practicing my invention, it is contemplated that a plurality of individual units 18 will be connected to a single centrally located tank 10.

The conditioning unit 18 includes a fluid operated turbine 20 connected to inlet conduit 16 and a flow regulating device such as a valve 22 disposed up stream from the turbine 20. Thus valve 22 may be closed and turbine 20 will not be constantly subjected to line pressure. A heat exchange coil 24 is connected in series with turbine 20, and outlet conduit 26 leads back to the tank 16. While inlet conduit 16 and outlet conduit 26 indicate separate lines run from the centrally located tank 10, it is a matter of choice to provide a series of branch plumbing lines of varying capacity into an installation such as a drive-in theater. This plumbing can be arranged for convenience sake such that individual lines need not connect each conditioning unit with the fluid source.

A pump 28, disposed in proximity to tank It), gives the fluid 12 a hydraulic head such that upon reaching the individual unit-s 18 normally some distance away from tank 10, a pressure in the vicinity of 50 pounds per square inch is available to drive turbine 20.

The present invention extends to both heating and cooling installations, and thus means 14 connected to tank 10 influences the temperature of fluid 12. For ex- 3 ample, a gas fired hot water boiler having fluid 12 contained therein would be used for a heating system and could be thermostatically operated such that the entire volume of fluid 12 in the tank is kept at a particular temperature such as 200 F. It is contemplated that the capacity of tank 10 is considerably greater than the immediate requirements of the total number of individual units 18 used in the central conditioning system. Thus the fluid 12 may be heated during an off peak period such as during the late evening hours or early morning hours, or in the case of a drive-in theater, during the off peak morning and afternoon hours.

Alternatively, the means 14 may be a refrigeration unit for cooling a refrigerant such as a mixture of water and an anti-freeze such as ethylene glycol. A conventional compressor and condenser unit used for large scale refrigeration systems may be used to advantage and operated during the off peak hours to cool the mixture to 10 F., for storage at this temperature within the insulated tank 10. In the case of a drive-in theater, it is required that 3,000 B.t.u. per hour per vehicle is required to keep the occupants comfortable at temperatures of 90 to 100 F. existing exteriorly of the vehicle. This refrigeration would then amount to approximately onequarter ton of refrigeration required per automobile, and in a standard drive-in theater having spaces for 400 automobiles, a 100 ton system may be operated constantly to store a sufficient amount of water and ethylene glycol mixture to adequately condition each vehicle within the theater. Using these approximations of capacity, the tank 10 should be large enough to contain 10,000 gallons of fluid without an extreme amount of heat loss through radiation.

Referring now to FIGS. 2 and 3, an example of an individual conditioning unit 18, particularly adaptable for installation in an automobile vehicle, is illustrated. A support structure takes the form of a casing 30 having a circular, hollow, pancake shaped support member 32 with a flat disc 34 fixedly mounted thereon. Support member 32 has a plurality of arcuately shaped slots 36 centrally located, which acts as an intake grill. Disposed on the entire periphery of support member 32 are a series of slots 38 functioning as an outlet grill. A flow path is defined such that air may enter the grooves 36 passing through the interior of casing 30 and exit through the outlet grill through slots 38.

Conduit 16, having a standard fitting 39 fixedly mounted thereon, enters the casing 30 through an aperture 40 in disc 34. Fitting 39 is threaded within a conventional L-shaped coupling 42, which is mounted upon a conventional globe valve 44 having a stem 46 extending therefrom, terminating in a handle 48 disposed exteriorly of casing 30. The valve 44 affords the user of the conditioning unit 18 means for regulating the fluid flow through the unit to the point of shutting it off entirely, if desired. A standard flare unit 50, extending from valve 44, has a length of tubing 52 mounted thereto which extends into inlet orifice 54 of a turbine 56.

Turbine 56, centrally mounted within casing 30, is fixedly attached to a plate 58 that in turn is supported and mounted upon the interior of support member 32. A plurality of apertures 61, formed in plate 58, are disposed about the periphery of turbine 56, thus affording communication of air entering the arcuately shaped slots 36 to impinge upon a blower 60 which is driven by turbine 56.

The turbine 56 includes a housing 62 with a closely fitting cap 64 disposed thereon, and an O-ring 66 positioned therebetween; the entire assembly retained in position by a plurality of screws 68, 70 passing therethrough and extending through plate 58. The turbine rotor 72 has a plurality of driven vanes 74 extending upwardly therefrom and shaped in such a manner that the fluid entering tube 52 is directed through orifice 54 in a direction tangent to the vanes 74. A cavity 76, formed in cap 64,

is centrally located over rotor 72 and has an outlet 77 formed therein. A centrally located shaft 78 extends laterally from rotor 72 and is journaled within the bearing 80 formed in the housing 62. O-ring 82 disposed within the bearing portion 80 and abutting the shaft 78 in sealing relation therewith prevents a loss of fluid from the turbine 56.

The blower 60 is fixedly mounted to the rotor 72 and shaft 78 by an adapter 84, which is screwed to the blower and fixedly attached to the shaft 78. Blower 60 comprises a cup shaped shell having a series of slots 86 formed on its periphery and a plurality of inwardly extending curved vanes 88. Thus by this construction, rotation of rotor 72 by the impact of fluid under sufficient pressure entering orifice 54 rotates vanes 74, shaft 78, and blower 60. In a preferred embodiment the turbine 56 and blower 60 are fabricated of plastic such as nylon to minimize the inertia of the moving system.

A tubing 90 extends within cap 64 and is in communication with the cavity 76 to thus duct all fluid from the interior of turbine 56 after it has passed through rotor 72. A length of heat exchanger coil 92 is connected by a standard elbow fitting 94 to the tubing 90. The heat exchanger coil 92 is arranged in a spiral array within the casing 30 between the blower 60 and the plurality of slots 38 serving as the outlet grill. Pinned tubing may be used as the heat exchanger coil 92 such that thermal energy may be readily transmitted from the interior of the coil through the plurality of fins 96 in typical heat exchange fashion. An example of the coil size is inch diameter by 6 feet in length; however, the size is partially dependent upon the capacity and the rate of heating or cooling desired for the particular installation. One feature of my invention is the disposition of the heat exchanger coils 92 between the blower 60 and the outlet grill slots 38 of the unit such that the air flow is radial and generally parallel to the flat portion of casing 30. This air flow would then generally follow the walls of the chamber to be heated when the unit 18 is placed flat against a chamber wall.

The heat exchange coil 92 terminates in the innermost portion of the spiral array with a conventional tube fitting with tubing 98 extending radially upwardly. The outlet conduit 26 enters the aperture 41 within the disc 34 and has a standard elbow fitting 100 which is connected to tubing 98 to complete the hydraulic circuit.

During those periods in which the conditioning unit 18 is used for air conditioning, the spiral array of heat exchange coils 92 having a chilled fluid passing therethrough normally have a tendency to condense moisture from the atmosphere, and after extended operation of the unit, this condensate would drip intermittently from the casing 30. For this reason, a series of arcuately shaped condensate gathering troughs 102, 104, 106, 108, 110, 112 are disposed in intimate relationship with each heat exchange coil in such a manner as to collect all the condensate within the lower most trough 112. All troughs 102-112 are arcuately shaped in cross section and mate the exterior configuration of heat exchange coils 92. The troughs are disposed between the lower most portions of the coils 92 and cover only A to /3 of the periphery of the coils 92, thereby allowing the air moved by blower 60 to be unimpeded by the troughs. Each trough has at least one aperture 102A, 104A, 108A, 110A, 112A disposed in the lower most portion such that gathered condensate naturally drip to the next succeeding trough. A length of outwardly extending closed gutter 114 is fixedly mounted to casing 30 and communicates with perforation 112A such that all collected condensate will naturally flow exteriorly of the casing. Any suitable means may be arranged for directing the condensate to a suitable collecting basin where it may be disposed.

The conditioning unit 18 is especially adapted for installation within a motor vehicle by having an L-shaped adapter bracket 116 fixedly mounted upon the disc 34 and rigidly supporting the inlet conduit 16 and outlet conduit 26. Thus the bracket 116 may be hooked over the upper edge of a vehicle Window 118 and with the window in its upper-most position, bracket 116 abuts an upper door frame 120. The gutter 114 is so positioned as to abut the lower most portion of the vehicle Window 118 such that condensate may naturally flow down the interior of the window and escape through the conventional perforations in the lower most portion of the vehicle door (not shown).

Referring to FIG. 1, a second valve 17 is mounted in the inlet conduit 16 and positioned upstream of the regulating valve 22. An example of the installation in a drive-in theater includes an upstanding post (not shown) normally disposed adjacent to a motor vehicle to which the inlet and outlet conduits are connected and valve 17 is mounted in close proximity to the post. This valve 17 acts as a means for terminating fluid flow during those times when the flow drastically increases downstream of valve 17. During those times when the inlet or outlet conduits are broken through wear, abrasion, or intentionally severed, the valve closes thus preventing loss of fluid through the inlet conduit 16. Referring to FIG. 3, the orifice 54 in turbine 20 limits the amount of flow through the conditioning unit 18 and is of a size substantially smaller than tubing 52, inlet conduit 16, outlet conduit 26, and all other conduits. Thus, with a break in the inlet conduit 16 downstream of valve 17, the flow drastically increases since the fluid is no longer limited by the orifice 54.

An example of valve 17 is illustrated in FIG. 4 and comprises a sealing element 122, a valve seat 124, and a spring 126 disposed within inlet conduit 16. The inlet conduit 16 is fixedly attached to conduit 16A by a standard fitting 128 with the internal tubing sizes being approximately the same to prevent a substantial drop in pressure. Sealing element 122 is normally in spaced relation with valve seat 124 such that the fluid flow passes through valve 17 under all normal conditions. A light coil spring 126 disposed within inlet conduit 16 abuts the sealing disc 130. By breaking the inlet conduit 16 downstream of valve 17 and upstream of turbine 20, the flow rate will drastically increase which drags sealing element 122 towards seat 124 during this increase in flow to close valve 17 and terminate flow therethrough. The fluid pressure within inlet conduit 16 upstream of valve 17 will constantly urge sealing element 122 closed until such time as the back pressure downstream of valve 17 is increased to a level which opens sealing element 122. A similar valve 17A is mounted in the outlet conduit 26 at a position as close as possible to the downstream extremity of heat exchanger coil 92. Valve 17A is exactly the same construction as valve 17 and serves the same function for the same reason.

Referring now to FIG. 5, a means for regulating the fluid flow through inlet conduit 16 may include an element which is temperature sensitive, thus regulating the amount of fluid passing into conditioning unit 18. In installations such as motels or hospitals, manual adjustment of regulating valve 22 would be cumbersome. An example of the regulating means takes the form of a casing 132 having a flexible bellows 134 disposed therein and abutting conduit 16. A temperature sensing bulb 136 is disposed remote from casing 132 and conditioning unit 18 in an area centrally located within the room or rooms which are heated or cooled. A capillary tube 138 connects bellows 134 with bulb 136 and a fluid, which changes its volume linearly with changes in temperature, is charged within bellows 134, bulb 136, and capillary tubing 138. Thus with changes in temperature, sensed by bulb 136, the pressure exerted upon the flexible inlet conduit 16 will vary directly in relation to temperature changes and thereby modulate the amount of fluid passing within conditioning unit 18.

The operation of the present invention as a heating unit will now be described. It is presumed that conditioning unit 18 is disposed within the chamber to be conditioned, as for example a motor vehicle. The unit is installed interiorly in a manner as illustrated in FIG. 2, or in the case of a motel or hospital, is mounted preferably on or in close proximity to one wall of a room. Tank 10 is charged with a fluid 12 which is heated by means 14 to a temperature of 200 F. Pump 28 pressurizes fluid 12 entering inlet conduit 16. Upon opening valve 22, pressurized fluid enters turbine 56 and impinges on vanes 74 causing rapid rotation of the rotor 72 and blower 69. The fluid passes through turbine 56 and enters the heat exchange coils 92 transferring thermal energy thereto, which is radiated to the fins 96. Upon passing through the entire length of heat exchange coils 92, the fluid re-enters tank 10 by the outlet conduit 26. While blower 60 is rotated by turbine 56, air is sucked in through the a'rcuately shaped inlet (grooves 36 and is blown past the spiral array of heat exchange coils 92. In passing over the coils, the air is heated by radiation and is directed radially out slots 38 along the inner surfaces of the chamber to be heated. This operation is continuous, and the amount of heat emitted by the unit 18, and the speed of blower 60 may be regulated by adjusting the fluid flow through valve 44.

The operation of conditioning unit 18 for cooling purposes is substantially the same as that described above, with the exception that mean-s 14 is .a refrigerating unit, and fluid 12 has an antifreeze added thereto to prevent icing. The passage of the fluid through unit 18 and its regulation is substantially the same as described above.

What is claimed is:

1. A heating-cooling conditioning unit for an enclosure comprising:

a pancake shaped support structure,

means mounted on the support structure for attaching the unit to an enclosure,

inlet and outlet fluid conduits protruding within the support structure,

heat exchange coils arranged in a flat spiral array with an opening centrally located in the array engaged with the inlet and outlet coils,

a rotatively mounted fan supported by the support structure protruding within the coil opening such that air moved by the fan would be directed across the coils,

a fluid turbine engaged with the fan and having inlet and outlet ports thereon communicating with the inlet fluid conduit,

whereby pressurized fluid flowing through the inlet conduit will transfer thermal energy as it passes through the coils and will drive the turbine and the fan to move air across the coils to thereby condition an enclosure.

2. A heating-cooling conditioning unit as defined in claim 1 and in addition:

deflector va-nes arranged on the fan to direct air substantially parallel to the flat spiral array of heat exchange coils.

4. A heating-cooling conditioning unit operated by pressurized fluid comprising:

a hollow support structure having a centrally located intake grill and an outlet grill disposed on the periphy,

a squirrel cage blower pivotally mounted within the support structure disposed adjacent to the inlet grill and aligned with the outlet grill,

a turbine fixedly attached to the blower and received by the support structure,

a length of heat exchange coil arranged in a flat spiral array and disposed within the support structure between the blower and the outlet grill,

inlet and outlet conduits protruding within the support structure and attached to the extremities of the heat exchanger coil,

the turbine having an inlet and an outlet port interposed in the inlet conduit upstream of the heat exchange coils,

the inlet conduit having a first portion connected to the turbine inlet port and a second portion to the turbine outlet port,

whereby pressurized fluid in the unit may rotate the turbine and the blower thereby directing air to be drawn within the support structure intake grill by the fan and forcing it across the heat exchange coil and out the outlet grill.

5. A conditioning unit comprising:

inlet and outlet conduits,

a turbine connected to the inlet,

a blower connected to the turbine and driven thereby,

a length of heat exchange coils disposed adjacent to the blower and connected to the inlet and outlet conduits,

and a valve means inserted in the inlet conduit upstream of the turbine and heat exchange coils for terminating fluid flow to the unit in the event of an abnormally large increase in flow of fluid such as caused by a break in one of the conduits downstream of the valve means the valve means including a sealing element therein which closes upon a preselected increase in flow through the valve means.

6. A conditioning unit especially adapted for air conditioning and to be connected to a source of refrigerated fluid comprising:

inlet and outlet fluid conduits,

heat exchange coils arranged in a flat spiral array,

a casing having the heat exchange coils arranged therethe casing having an inlet and an outlet for the passage of air with the coils disposed Within the natural passage of air between the inlet and outlet,

a means for moving air mounted on the casing adjacent the heat exchange coils,

a turbine mounted on the airmoving means and having an inlet and an outlet thereon interposed within the inlet conduit,

a plurality of channel shaped condensate collecting troughs disposed below the heat exchange coils when mounted in a normal position, and

a gutter mounted on the casing and in communication with the trough such that condensed liquids may flow from the coils through the trough and out the gutter.

7. A conditioning unit especially adapted for air conditioning and to be connected to a source of refrigerated fluid comprising:

inlet and outlet fluid conduits,

a fluid regulating valve mounted on the inlet conduit,

a length of heat exchange coil with a first and second extremities arranged in a spiral array having at least two rows of coils disposed in a preselected manner,

the first heat exchange coil extremity attached to the outlet conduit,

a turbine having inlet and outlet ports thereon,

tubing attached to the turbine inlet port and to the valve for fluid transmission therethrough,

a second tube connected to the turbine oulet port and to second extremity of the heat exchange coils,

a blower mounted on the turbine and disposed adjacent to the heat exchange coils,

a set of channel-shaped condensate collecting troughs mounted below the heat exchange coils,

the troughs having perforations therein for directing condensate fluid from one trough to the succeeding troughs with the lower most trough being formed with a single perforation therein, and

:a gutter extending to a preselected position in spaced relation to the heat exchange coils and having a port disposed proximate to the perforation in the lowermost trough adjacent to the spiral array of heat exchange coils.

8. A heating or cooling conditioning unit comprising:

a substantially flat pancake shaped hollow casing having a plurality of centrally disposed intake grooves and a series of slots formed on the periphery of the casing acting as an outlet, an inlet and an outlet conduit extending within the casing, a turbine centrally located within the casing,

the turbine including a rotor rotatably mounted therein and having formed thereon a plurality of radially disposed vanes extending therefrom,

the turbine having a passageway therein disposed in such a manner so as to be tangent to at least one of the rotor vanes during a portion of the rotor revolution,

the turbine having a second passageway formed therein in communication with the rotor for ducting fluid exteriorly of the turbine,

a blower fixedly mounted to the turbine rotor and having inwardly curved, arcuately shaped vanes disposed thereon for centrifugally moving air from the casing inlet to the casing outlet,

'tubing connected between the first turbine passageway and the inlet conduit,

a manually operable valve interposed within the tubing and having a stem extending exteriorly of the casing,

a length of heat exchange coil arranged in a spiral fashion within the casing in proximity of the blower and arranged in such a manner so as to receive the majority of the air moved by the blower which passes through the casing inlet and is directed through the casing outlet,

the heat exchange coil having a plurality of fins formed thereon extending radially from the coil with adjacent fins being in spaced relation to each other,

one extremity of the heat exchange coil connected to the outlet conduit, and

a second extremity of the heat exchange coil being connected to the second passageway formed in the turbine.

References Cited by the Examiner UNITED STATES PATENTS 2,162,152 6/1939 Wulle -125 2,255,292 9/1941 Lincoln 16585 2,454,654 11/1948 Kaufman 165-125 2,504,798 4/1950 Brinen 165125 2,612,830 10/1952 Kendrick 982 2,692,759 10/1954 Swenson et a1 165-85 2,959,031 11/ 1960 Hopkinson et a1 62290 2,978,225 4/1961 Dallas 16546 3,001,479 9/1961 Swenson et al 16585 3,145,925 8/1964 Swenson et al 16585 FOREIGN PATENTS 1,014,791 8/1952 France.

ROBERT A. OLEARY, Primary Examiner.

CHARLES SUKALO, Examiner.

Claims (1)

1. A HEATING-COOLING CONDITIONING UNIT FOR AN ENCLOSURE COMPRISING: A PANCAKE SHAPED SUPPORT STRUCTURE, MEANS MOUNTED ON THE SUPPORT STRUCTURE FOR ATTACHING THE UNIT TO AN ENCLOSURE, INLET AND OUTLET FLUID CONDUITS PROTRUDING WITHIN THE SUPPORT STRUCTURE, HEAT EXCHANGE COILS ARRANGED IN A FLAT SPIRAL ARRAY WITH AN OPENING CENTRALLY LOCATED IN THE ARRAY ENGAGED WITH THE INLET AND OUTLET COILS, A ROTATIVELY MOUNTED FAN SUPPORTED BY THE SUPPORT STRUCTURE PROTRUDING WITHIN THE COIL OPENING SUCH THAT AIR MOVED BY THE FAN WOULD BE DIRECTED ACROSS THE COILS, A FLUID TURBINE ENGAGED WITH THE FAN AND HAVING INLET AND OUTLET PORTS THEREON COMMUNICATING WITH THE INLET FLUID CONDUIT, WHEREBY PRESSURIZED FLUID FLOWING THROUGH THE INLET CONDUIT WILL TRANSFER THERMAL ENERGY AS IT PASSES THROUGH THE COILS AND WILL DRIVE THE TURBINE AND THE FAN TO MOVE AIR ACROSS THE COILS TO THEREBY CONDITION AN ENCLOSURE.

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