Abstract: The invention relates to an improved aqueous solar energy collector system which includes a heat exchange panel wherein a getter having a surface layer in contact with the aqueous fluid which is characterized by a high affinity for corrosive metal ions in the aqueous fluid is provided upstream of the heat exchangers to thereby remove said corrosive ions from the aqueous fluid before it is introduced into the heat exchanger.

Abstract: An air condenser for condensing vapors where freezing or solidification of the condensate is likely to occur. Finned tube bundles are used, which are arranged so as to form a primary condensation zone and a secondary condensation zone. The tube bundles are placed at a slope and are struck by an air stream coming from below. The innermost tubes are directly struck by the cooling airstream and make up the first condensation zone. The outermost tubes receive air which has been preheated since it has flowed through the first condensation zone. These outermost tubes make up the second condensation zone. Thus vapors which are not condensed immediately are condensed in the second condensation zone. The apparatus is a compact, self-contained and efficient unit which is cheaper than the prior art devices both as to initial cost and upkeep cost.

Abstract: A heat exchanger apparatus for a liquid-cooled internal combustion engine including a radiator axially spaced from the engine, an engine-driven, suction-type fan axially spaced intermediate the engine and the radiator for drawing cooling air axially through the radiator, fan shroud means shaped and positioned with respect to the radiator and blades of the fan whereby the air stream discharged by the fan is in a radial outward direction, and an air baffle positioned intermediate the fan and engine for mitigating air recirculation in the fan hub region; the fan shroud structure is formed to provide a generally cylindrical exit throat section (CF), a radial flat discharge section (RF), and a radial expander or diverging section (R), serving as a transition between the throat section and the discharge section, and wherein the impeller blades of the fan have a projected or effective axial width (AW); the various shroud structure sections are dimensioned with respect to such projected or effective axial width (AW)

Abstract: A heat exchanger assembly of the type having a heat transfer core element which includes a plurality of fins in parallel stacked relationship for defining heat transfer surfaces and a plurality of fluid carrying tubes extending transversely through the fins for defining a fluid circuit, the assembly including at least one tube-to-tube joint, the improvement comprising a solderless connection at the tube-to-tube joint wherein one of the tubes includes an end having an annular, outwardly extending shoulder followed by an inwardly tapered flared portion for receiving the outwardly tapered portion of the other portion and the other of the tubes including an end having an outwardly flared portion for receiving the outwardly tapered portion of the other tube end and an inwardly directed flange clinched over the shoulder of the other tube end to produce a solderless mechanical connection between the two tubes.

Abstract: An airflow regulating apparatus for a radiator having a suction fan driven by an engine comprising a radiator core defining passages for the liquid coolant from the engine, a radiator grille mounted on a vehicle frame on the upstream side of said radiator core, and a plurality of plates disposed longitudinally and laterally parallel to the airflow between said radiator core and said radiator grille, said plurality of plates thus forming lattices therebetween in such a manner that the density of the lattices is in proportion to the speed of air inflow thereto.

Abstract: A heat exchange recuperator comprising a box-like housing having inlets and outlets for heating gases and gases to be heated, respectively, connecting plates mounted on a lower and an upper walls of said housing, and a plurality of hollow metallic plates disposed in spaced relation sandwiched by said connecting plates. The heating gases are adapted to pass through the spaces between said hollow plates and the gases to be heated are adapted to pass through said hollow plates. A plurality of generally U-shaped heat-resisting cover plates are detachably mounted on the upstream ends, with respect to the heating gases, of said each hollow plates, respectively, with defining spaces between the upstream ends of said hollow plates and inner walls of said cover plates.

Abstract: A heat exchanger includes banks of double-pipe elements connected to oval headers, the opposite ends of which are connected by round transition elements to main headers. Each oval header and the respective transition elements are formed from a single, integral member, initially a cylindrical pipe, without connecting welds. The outer ends of the transition elements are reduced to form nipple elements for attachment to the main headers. The nipple elements have a greater wall thickness than the transition elements.

Abstract: There is disclosed apparatus for condensing steam, or other vapors containing non-condensibles such as air, which includes bundles each made up of a single row of parallel, side-by-side and spaced-apart tubes over which air is passed in a direction transverse to the row. Each tube has substantially parallel side walls which are generally parallel to the side walls of adjacent tubes, with the side walls being substantially longer in the direction of air flow than the width of the tube.

Abstract: A compact yet efficient auxiliary transmission oil cooler of simple design and adapted to be installed within the engine coolant hose of a vehicle. The oil cooler consists of two basic parts. The first part is an outer tubular sleeve that serves as a housing and has opposite open ends adapted to be attached at its ends to a radiator hose for passage of coolant through the tube. The second part is the oil passage means to accomplish heat transfer to the coolant and it consists of a tubular member having a plurality of generally parallel runs or passes extending inside the coolant hose.

Abstract: A thermal interface adapter is provided which is located in the interface between the housing and the heat sink of a conduction cooling module of the type which provides a conduction heat transfer path for removing heat from electronic components. The thermal interface adapter creates an interface between the housing and the adapter, and the adapter and the heat sink. The thermal interface adapter and interfaces associated therewith have a predetermined thermal resistance thereby increasing the heat transfer path thermal resistance to allow the thermal components within the module to operate at a higher temperature.

Abstract: A method and apparatus for transferring heat regeneratively in a rotating heat exchanger. The heat exchanger provides for the cold gas stream to be heated alternate compression and expansion with heat addition usually during the expansion phase of the compression-expansion step from a warmer fluid. The fluid to be heated is usually a gas, while the fluid releasing heat may be either a gas or liquid. The heat element is a folded member usually in the form of bellows mounted concentric with rotor shaft, with baffles within to provide for outward and inward movement of the gas. Due to the heat addition especially during the expansion steps, the gas to be heated gains in pressure and usually this pressure gain is work free, and in magnitude is similar to the constant volume heat addition pressure gain which is well known.

Abstract: A condensing, a heat-transfer wall for liquefying vapor having a temperature higher than the wall by bringing the vapor in contact therewith. There are provided many parallel grooves in the basic surface of the heat-transfer wall, thereby defining ridge portions or build-up portions thereamong. These ridge portions have their tip portions tapered at sharp acute angle. Recessed or concave portions are provided in the tip portions of these ridge portions, and these recessed portions have their surfaces inclined to the basic surface of the heat-transfer wall. The width of the respective grooves ranges from 0.05 to 2.5 mm, and the depth thereof is not more than 10 mm. The thickness of the respective ridge portions ranges from 0.01 to 2.5 mm, and the height there of is not more than 10 mm. The depth of the recessed portions ranges from 0.02 to 0.8 times the depth of the grooves, and the pitch of recessed portion is not more than 2.0 mm. The width of the tip portions of the portions is 0.01 to 1.

Abstract: A damper assembly adapted to be affixed to an air-handling unit at an installation site including a plurality of adjacent damper assembly units adapted to be mounted with and for regulating air flow from the air-handling unit, the damper assembly unit having an interlocking structure for interlocking adjacent damper assembly units theretogether. Further, the damper assembly has a damper structure for simultaneously and independently controlling the relative mixing proportions of heated air and cooled air with ambient air for use with a multi-zone air-handling unit.

Abstract: A heating system for a building structure is provided in which a heat pump system and at least one solar energy system and one air convector system are used. The solar energy system collects heat during the periods when sun energy is available and the air convector system collects heat when available from warm air. The heat from both systems is stored directly in the earth which surrounds the evaporator of the heat pump system.

Abstract: Cooling tower having an outer peripheral wall provided with blowers spaced about the periphery thereof at a lower region thereof, the blowers being formed with annular inlet openings for cooling air, the cooling tower further including means defining closable openings disposed between the annular inlet openings.

Abstract: A heat exchanger comprises an array of tubes, a perforated end plate defining a plurality of holes, a support sleeve in each hole for holding an end of a respective tube in a respective hole, each support sleeve fitting the respective hole, the exterior and interior surface of the support sleeve each defining a groove, a toroidal gasket in each groove, and a clamping portion on each support sleeve. The clamping portion is affixed to the outer face of the perforated end plate and has an end projecting beyond the end of the respective tube held in the support sleeve, and has an inwardly extending abutment at the projecting end for limiting any movement of the tube beyond the abutment.

Abstract: A cooling capsule for thyristors wherein the capsule comprises a core in which is cast or embedded a cooling coil having the form of a helix which extends from a first end to a region at which it turns around and extends to a second end in the manner of a bifilar winding.

Abstract: A laundry dryer source of heat for providing warm gas to dry laundry is utilized to heat water for laundry washer use, and is particularly suited for coin operated laundries. Each dryer has a gas burner and a heat absorbtion water coil in the flame area of the burner, the coils being connected in a circuit between a cool water outlet and a heated water inlet of a typical automatic water heater tank, with pump means for circulating cool water from the tank through coils and returning heated water from the coils to the tank whenever any of the dryers are in operation. In one embodiment continuous water flow through the coils is provided during heating operation by substantially equal pressure differentials between the cold water inlet and the hot water outlet of each of the coils, and is further assured by provision of coils having substantially straight, horizontal runs, alternate runs being generally coplanar with the planes spaced apart.

Abstract: A cooling capsule for a thyristor wherein the capsule is provided with a metallic core having at least one heat transfer surface and with a plurality of bores extending between surfaces of the core so as to form a meander-line-like flow path therethrough between an inlet opening and an outlet opening. The aforesaid surfaces between which the bores extend are provided with recesses each of which connects adjacent pairs of bores and the capsule is further provided with plate-like members, each of which covers a recess and is joined thereto by electron beam welding.

Abstract: The spacer grid is formed of metal strips which are bent to have alternating long angular sides and short flat sides. The strips are secured to each other at alternating flat sides to form a series of hexagonal spaces to receive the heat exchanger tubes. In addition, pairs of spring tabs are bent out of each of the angular sides in alternating manner to effect support of the tube in a space. The angular sides form an included angle of 135.degree. with the flat sides.