Abstract: A heat exchanger includes: a first heat transfer tube unit including first heat transfer tubes arranged in parallel along a first direction within a horizontal plane; and a second heat transfer tube unit including second heat transfer tubes arranged in parallel with one another along a second direction that intersects the first direction within the horizontal plane. Each of the first heat transfer tubes and the second heat transfer tubes includes: straight portions arranged in parallel in a vertical direction; and one or more curved portions that make end portions of the straight portions communicate with each other. The straight portions of the first heat transfer tube unit and the straight portions of the first heat transfer tube unit are stacked on each other alternately.

Abstract: A heat exchanger includes: a first heat transfer tube unit including first heat transfer tubes arranged in parallel along a first direction within a horizontal plane; and a second heat transfer tube unit including second heat transfer tubes arranged in parallel with one another along a second direction that intersects the first direction within the horizontal plane. Each of the first heat transfer tubes and the second heat transfer tubes includes: straight portions arranged in parallel in a vertical direction; and one or more curved portions that make end portions of the straight portions communicate with each other. The straight portions of the first heat transfer tube unit and the straight portions of the first heat transfer tube unit are stacked on each other alternately.

Abstract: An air conditioner is provided that includes an exhaust heat recovery unit for recovering exhaust heat in a heat transfer medium, a heat transfer medium passage in which the heat transfer medium outputted from the exhaust heat recovery unit flows, an auxiliary heating device, heats the heat transfer medium, an absorption chiller driven by heat of the heat transfer medium, a refrigerant passage, through which a refrigerant outputted from the absorption chiller flows, an indoor unit to which the refrigerant is supplied through the refrigerant passage, a heat transfer medium temperature detector for detecting the temperature of the heat transfer medium flowing through the heat transfer medium passage, a refrigerant temperature detector for detecting the temperature of the refrigerant flowing through the refrigerant passage, and a control portion for controlling an operation of driving the auxiliary heating device.

Abstract: An air conditioner that comprises an exhaust heat recovery unit 3 for recovering exhaust heat in a heat transfer medium, a heat transfer medium passage 5a in which the heat transfer medium outputted from the exhaust heat recovery unit 3 flows, an auxiliary heating device 7, which is provided in the heat transfer medium passage 5a, for heating the heat transfer medium, an absorption chiller 9, to which the heat transfer medium passage 5a is connected, to be driven by heat of the heat transfer medium, a refrigerant passage 11a, through which a refrigerant outputted from the absorption chiller 9 flows, an indoor unit 13 to which the refrigerant is supplied through the refrigerant passage 11a, a heat transfer medium temperature detecting means 15 for detecting the temperature of the heat transfer medium flowing through the heat transfer medium passage 5a, a refrigerant temperature detecting means 17 for detecting the temperature of the refrigerant flowing through the refrigerant passage 11a, and a control portion

Abstract: The air conditioner comprises heat transfer medium temperature adjusting device 1 for adjusting the temperature of a heat transfer medium, an absorption chiller 5 having as a heat source the heat transfer medium supplied from the heat transfer medium temperature adjusting device 1 via a heat transfer medium line 7a through which the heat transfer medium conducts, a valve 9a provided in the heat transfer medium line 7a, a by-pass line 11a branching off from the valve 9a, and an indoor unit 19 supplied with a refrigerant from the absorption chiller 5 or the heat transfer medium from the heat transfer medium temperature adjusting device 1 via the by-pass line 11a. Thereby, at the time of heating, the valve is switched to allow the heat transfer medium to pass through the by-pass line 11, so that the heat transfer medium can be directly supplied via the by-pass line 11 to the indoor unit 19.

Abstract: The air conditioner comprises heat transfer medium temperature adjusting device 1 for adjusting the temperature of a heat transfer medium, an absorption chiller 5 having as a heat source the heat transfer medium supplied from the heat transfer medium temperature adjusting device 1 via a heat transfer medium line 7a through which the heat transfer medium conducts, a valve 9a provided in the heat transfer medium line 7a, a by-pass line 11a branching off from the valve 9a, and an indoor unit 19 supplied with a refrigerant from the absorption chiller 5 or the heat transfer medium from the heat transfer medium temperature adjusting device 1 via the by-pass line 11a. Thereby, at the time of heating, the valve is switched to allow the heat transfer medium to pass through the by-pass line 11, so that the heat transfer medium can be directly supplied via the by-pass line 11 to the indoor unit 19.