Abstract: A heat-transfer pipe (12) is formed so as to extend from a top portion of an outer pipe (11) and to be bent at a bottom portion of the outer pipe (11) to return to the top portion, and is arranged such that at least a portion thereof contacts an inner circumferential surface of the outer pipe (11). The heat-transfer pipe (12) is configured to allow fluid to be heat-exchanged to flow thereinside in opposite directions in heating operation and cooling operation.

Abstract: An outer pipe (11), which is buried under the ground, is provided, and a heat transfer pipe (12), in which heat exchange fluid flows, is inserted into the outer pipe (11). A heat medium (13) is sealed in the outer pipe (11). At least a part of the heat transfer pipe (12) is formed by a flat body (12e, . . . ) that is formed by a flat pipe (12e, 14) or a composite pipe (15) in which a plurality of pipes (15a) are arranged in a flat shape. A flat side of the flat body (12e, . . . ) contacts an inner peripheral surface of the outer pipe (11).

Abstract: A heat exchanger installed under the ground or water includes an outer pipe installed vertically or installed inclinedly under the ground or water; and a heating heat-transfer pipe inserted into the outer pipe, and evaporating refrigerant injected thereto. A heat medium is sealed in the outer pipe. A heat exchange is performed by using a change in phase of the heat medium and a heat medium guiding section for guiding the heat medium condensed on an outer surface of the heating heat-transfer pipe to an inner wall surface of the outer pipe by using surface tension of the heat medium or by reducing an angle of contact on the inner surface is formed in an upper section of the outer pipe.

Abstract: A heat exchanger for exchanging heat under the ground or water includes an outer pipe (51) to be installed under the ground or water; and a cooling heat-transfer pipe (52) which is inserted into the outer pipe (51), and which dissipates heat from refrigerant injected thereto. A heat medium is sealed in the outer pipe (51). The outer pipe (51) and the cooling heat-transfer pipe (52) are arranged so that the liquid heat medium is held between an inner wall surface of the outer pipe (51) and an outer wall surface of the cooling heat-transfer pipe (52).

Abstract: A compressor, an outdoor heat exchanger, an indoor heat exchanger, and the like are connected to each other with refrigerant piping to form a refrigerant circuit in a closed loop configuration. The refrigerant circuit is provided with a four-way switch valve such that the direction of circulation of a refrigerant is reversible. The refrigerant circuit is provided with a refrigerant heater. During a cooling operation, an electromagnetic valve is closed so that the outdoor heat exchanger serves as a condenser to perform a refrigeration cycle operation. During a heating operation, natural gas is caused to burn in the refrigerant heater to heat and evaporate the refrigerant with high-temperature combustion gas. The evaporated refrigerant flows into the indoor heat exchanger, exchanges heat with indoor air, and is condensed, whereby the indoor air is heated.

Abstract: An air inlet 16 is formed in a rear surface side vertical wall section 10b, or a single surface of an apparatus main body 10, and an air stream path that extends from the air inlet 16 of the rear surface side vertical wall section 10b to air outlets 14a and 14b formed upwardly aslant in an inclined surface section 13 that is also the single surface provided in the opposite direction. In this air stream path are arranged an air-cooling absorber 17, an air-cooling condenser 19 and fans 15a and 15b provided with their fan axes arranged upwardly aslant in correspondence with the air outlets 14a and 14b. With this arrangement, the air-cooling absorption type refrigerating apparatus is made to have an integrated air intake space and a reduced installation area, and an air stream path extending from the air inlet to the air outlets is made to have a reduced draft loss to allow the flow velocity distribution of the air stream of the heat exchange section to be uniformed.

Abstract: A light sensitive planographic printing plate have deposited particles on a sensitive layer, each of the said deposited particles comprising a protuberant or bulging portion and a substantially flat base portion spreading around the said protuberant or bulging portion, the said both protuberant or bulging portion and flat base portion being formed integrally with a same material.

Abstract: The heat exchanger includes a plurality of heat transfer tubes 1, 1 . . . arranged in parallel, and a multiplicity of mesh-form fins 2, 2 . . . arranged parallel to axes of the tubes and joined to the heat transfer tubes 1, 1 . . . . Each of the heat transfer tubes 1 consists of a pair of tube component members 4, 4 of a half cylindrical configuration having, at their respective circumferential ends, joining flanges 4a, 4b extending along the axis of the tube. The opposed joining flanges 4a, 4b of the tube component members 4, 4 are joined together by being pressed against the fins 2, 2 from outer side thereof. This provides for improvement in operating efficiency in the process of assembling heat transfer tubes and mesh-form fins together.

Abstract: An air conditioner comprising a casing, an air flow passage extending from an air inlet at the upper side of the casing to an air outlet at the lower side of the casing. A cross flow fan is provided within the casing along with a heat exchanger composed by connecting fins through which air is allowed to pass to the outer surface of the heat transfer tube along the lengthwise direction thereof. The heat transfer tube is branched into a plurality of passes in the heat exchanger. The present invention is characterized in that the heat transfer tube is disposed in a direction crossing the axial direction of the cross flow fan. Even if drift of flowing air is caused by the cross flow fan, distribution in the air flow speed and distribution of heat exchanger can be made equal and heat exchanging capacity of high level can be obtained, without causing the trouble of condensed water from the heat exchanger falling into the air flow passage.