摘要:
In an internal heat exchanger, when a corresponding diameter of a high pressure passage 5a is ψh, a passage length Lh of the high pressure passage (5a) is so set as to satisfy the relation 9.16/{LN(4.5−ψh+1.03)}
摘要:
There is provides a heat exchanger comprising: a plurality of tubes (110) stacked on each other; and a pair of header tanks (140), each header tank (140) having a flow section (151) in which fluid flows, extending in a direction of stack of the tubes (110), wherein both end sections (111) of the tubes (110) in the longitudinal direction are joined to the pair of header tanks (140), the flow section (151) of each header tank (140) and the inside of each tube (110) are communicated with each other, a tip position (a) of the tube end section (111) is arranged in an outside region of the flow section (151), and an inner wall width size (b) of the flow section (151) is smaller than a size (c) in the width direction of the header tank (140) at the tube end section (111).
摘要:
An evaporator operated with the carbon dioxide gas, comprises at least a unit core including a plurality of heat transmission tubes having a path with a refrigerant flowing therein, a first tank connected to an end opening of the heat transmission tubes and formed with a refrigerant supply path and a second tank connected to the other end opening of the heat transmission tubes and formed with a refrigerant discharge path. The width L1 of the unit core is given as 50 mm≦L1≦175 mm. The equivalent diameter d of the refrigerant supply path of the first tank and the refrigerant discharge path of the second tank is given as 4.7 mm≦d≦9.6 mm.
摘要翻译:用二氧化碳气体操作的蒸发器至少包括一个单元芯,该单元芯包括多个传热管,该导热管具有在其中流动的制冷剂的路径,第一槽连接到传热管的端部开口并形成有制冷剂供应 路径和连接到传热管的另一端开口的第二罐,并形成有制冷剂排放路径。 单位核心的宽度L 1为50毫米<= L 1 <= 175毫米。 第一罐的制冷剂供给路径的当量直径d和第二罐的制冷剂排出路径的给定值为4.7mm <= d <= 9.6mm。
摘要:
A heat exchanger includes aligned tubes and upper and lower header tank units, each of which includes two fluid conduits communicated with the tubes. Each header tank unit further includes an intermediate plate, which defines a plurality of communication holes therethrough. Each communication hole communicates between a corresponding one of the tubes and a corresponding one of chambers defined by the fluid conduits of the header tank unit such that each tube is spaced apart from the corresponding one of the chambers.
摘要:
In an internal heat exchanger, when a corresponding diameter of a high pressure passage 5a is Ψh, a passage length Lh of the high pressure passage (5a) is so set as to satisfy the relation 9.16/{LN(4.5−Ψh+1.03)}
摘要:
In a heat exchanger, a core has a first core portion including first tubes and a second core portion including second tubes. The first tubes defines first passages through which an internal fluid flows and the second tubes defines second passages through which the internal fluid passed through the first passages flows. A flow direction of the internal fluid passed through a first section of the first core portion and a flow direction of the refrigerant passed through a second section of the first core portion are changed with respect to a direction that the tubes are layered, before flowing in the second core portion. Thus, the internal fluid passed through the first section of the first core portion flows into a second section of the second core portion and the internal fluid passed through the second section of the first core portion flows into a first section of the second core portion.
摘要:
An evaporator operated with the carbon dioxide gas, comprises at least a unit core including a plurality of heat transmission tubes having a path with a refrigerant flowing therein, a first tank connected to an end opening of the heat transmission tubes and formed with a refrigerant supply path and a second tank connected to the other end opening of the heat transmission tubes and formed with a refrigerant discharge path. The width L1 of the unit core is given as 50 mm≦L1≦175 mm. The equivalent diameter d of the refrigerant supply path of the first tank and the refrigerant discharge path of the second tank is given as 4.7 mm≦d≦9.6 mm.
摘要翻译:用二氧化碳气体操作的蒸发器至少包括一个单元芯,该单元芯包括多个传热管,该导热管具有在其中流动的制冷剂的路径,第一槽连接到传热管的端部开口并形成有制冷剂供应 路径和连接到传热管的另一端开口的第二罐,并形成有制冷剂排放路径。 单位核心的宽度L 1为50毫米<= L 1 <= 175毫米。 第一罐的制冷剂供给路径的当量直径d和第二罐的制冷剂排出路径的给定值为4.7mm <= d <= 9.6mm。
摘要:
A heat exchanger is used in a vapor-compression type refrigerator where a pressure of a refrigerant at a high-pressure portion reaches and exceeds a critical pressure. A low-pressure refrigerant flows through the heat exchanger. The heat exchanger comprises a flat tube; refrigerant channels included in the tube; and inner pillars disposed between the refrigerant channels. A tensile strength of material of the tube is defined as S [N/mm2]; of one of the refrigerant channels, a dimension approximately parallel with a major-axis direction of the tube, as Wp [mm]; and, of one of the pillars, a thickness approximately parallel with the major-axis direction of the tube, as Ti [mm]. Here, [447×Wp/{10^(1.54×log10S)}−533/{10^(1.98×log10S)}]≦Ti≦[447×Wp/{10^(1.54×log10S)}−533/{10^(1.98×log10S)}]×2.3.
摘要:
A heat exchange tube having a flat shape includes a plurality of fluid paths having a circular cross section and extending in a longitudinal direction of the tube. Each fluid path is parallel to each other fluid path. The tube is dimensioned such that a distance between two adjacent fluid paths is defined as Wt, and a circumferential thickness between a surface of the tube and an outermost fluid path is defined as Ht. The distance Wt and the circumferential thickness Ht have a relationship as 0.42≦Ht/Wt≦0.98.
摘要:
In an internal heat exchanger, when a corresponding diameter of a high pressure passage 5a is Ψh, a passage length Lh of the high pressure passage (5a) is so set as to satisfy the relation 9.16/{LN(4.5−Ψh+1.03)}