摘要:
A heat pump type hot water supply device is provided with a heat source side heat pump unit having a heat radiating heat exchanger that condenses refrigerant to radiate heat from the refrigerant. The hot water supply device is provided with a water tank that stores water, a water supply pipe that supplies water to the water tank from the outside, a water circulation pipe that is extended in a bypassing manner and circulates the water in the water tank from a bottom section to an upper section, a heat absorbing heat exchanger that is arranged on the water circulation pipe and connected to the heat radiating heat exchanger of the heat source side heat pump unit so as to absorb heat, and a hot water supply unit that comprises a hot water supply pipe that supplies warm water in the upper section of the water tank to the outside.
摘要:
A heat pump type hot water supply device is provided with a heat source side heat pump unit having a heat radiating heat exchanger that condenses refrigerant to radiate heat from the refrigerant. The hot water supply device is provided with a water tank that stores water, a water supply pipe that supplies water to the water tank from the outside, a water circulation pipe that is extended in a bypassing manner and circulates the water in the water tank from a bottom section to an upper section, a heat absorbing heat exchanger that is arranged on the water circulation pipe and connected to the heat radiating heat exchanger of the heat source side heat pump unit so as to absorb heat, and a hot water supply unit that comprises a hot water supply pipe that supplies warm water in the upper section of the water tank to the outside. The water supply pipe is branched into a plurality of water supply paths including a first water supply path and a second water supply path. The first water supply path supplies water supplied from the outside directly to the water tank. The second water supply path supplies water to the water tank after the water quality of the water from the outside is improved by the water quality adjusting unit so as to hardly generate scale. Accordingly, one of or both of the water supply paths are selectively used according to the water quality of the supplied water. This suppresses the deposition of scale.
摘要:
A heating and hot water supply apparatus is provided with a heat pump unit (2), a water storage tank (1), a heat exchanger (10) in the water tank and pipe lines (31, 32). Hot water stored in the water storage tank (1) by being guided by the pipe line (32) passes through a radiator (30) outside the water storage tank (1), then returns into the storage tank (1) by being guided by the pipe line (31) for circulation. Thus, the radiator (30) can directly use heat of large quantity hot water stored in the water storage tank (1).
摘要:
A heat pump type hot water supply apparatus includes a heat-source side heat pump unit 2 for heating water, a hot water tank 1 for storing therein hot water heated by the heat-source side heat pump unit 2, and a hot water supply heat exchanger 10 which is placed in the hot water tank 1 and in which water flows from lower side toward upper side of interior thereof. There is provided a difference between heat exchange performance of a lower-stage side portion 10b and heat exchange performance of an upper-stage side portion 10a of the hot water supply heat exchanger 10.
摘要:
A heat pump type hot water supply apparatus includes a heat pump unit 2 for heating water, a hot water tank 1 for storing therein hot water heated by the heat pump unit 2, and a hot water supply heat exchanger 10 which is placed substantially over a vertical entirety of interior of the hot water tank 1 and in which water flows from lower side toward upper side. Water that has flowed out from the upper side of the hot water supply heat exchanger 10 is discharged out from the top portion of the hot water tank 1.
摘要:
A water heat exchanger exchanges heat between a refrigerant and water, and includes a pair of flat refrigerant pipes and a flat water pipe. Each flat refrigerant pipe has a plurality of refrigerant passageway holes. The flat water pipe has at least one water passageway hole. The number of water passageway holes is fewer than the number of refrigerant passageway holes of the flat refrigerant pipes. Long side surfaces of the flat water pipe and a long side surface of each of the pair of flat refrigerant pipes are in tight contact with each other as viewed in cross section. The flat water pipe is interposed by the pair of flat refrigerant pipes.
摘要:
A heat exchanger is adapted to be used in a vapor compression system, and includes a shell, a distributing part and a tube bundle. The tube bundle includes a plurality of heat transfer tubes arranged in a plurality of columns extending parallel to each other when viewed along the longitudinal center axis of the shell. The heat transfer tubes has at least one of: an arrangement in which a vertical pitch between adjacent ones of the heat transfer tubes in at least one of the columns is larger in an upper region of the tube bundle than in a lower region of the tube bundle; and an arrangement in which a horizontal pitch between adjacent ones of the columns is larger in an outer region of the tube bundle than in an inner region of the tube bundle.
摘要:
The present invention relates to a hot water corrugated heat transfer tube that exchanges heat between its interior and exterior. A plurality of projections, each whose height (H1) is in the range of 0.5 mm-1.5 mm, is provided in at least one part of the inner surface of a portion positioned in a section of a corrugated heat transfer tube, where the Reynolds number (Re) of the fluid flowing in the interior of the tube is less than 7,000. The height H1 of the projections is in the range of 0.05-0.15 times the inner diameter D or the height H1 of the projections is in the range of 1-3 times the depth (Hm) of the corrugated grooves. As a result, with a simple structure, the heat transfer performance in the low Reynolds number zone is improved, and the pressure loss inside the tube is small.
摘要:
The present invention relates to a hot water heat transfer pipe that exchanges heat between its interior and exterior. A plurality of projections, each having a height in the range of 0.8-2.0 mm or 0.1-0.25 times the inner diameter, is provided in at least one part of an inner surface of a portion of the heat transfer pipe positioned in a section where the Reynolds number of the fluid flowing in the interior is less than 7,000 to improve the heat transfer performance in the low Reynolds number zone and minimize pressure loss inside the pipe.
摘要:
The outer surface of a core pipe 31 is pressed so as to form projections 313 on the inner surface of the core pipe 31, and a winding pipe 32 is helically wound around the outer circumference of the core pipe 31. Subsequently, the core pipe 31 and the winding pipe 32 are bent together, and brazing is performed. As a result, the outer surface of the winding pipe 32 is in contact with the outer surface of the core pipe 31 without any gap therebetween at a bending center portion (D), and the outer surface of the winding pipe (32) is bonded to the outer surface of the core pipe (31) by a brazing material (33) at the bending center portion (D) of the bent part C-C.