摘要:
To provide a method for producing a composite thermal insulator (1), a method for producing a water heater (25), and the composite thermal insulator (1) which can limit degradation of thermal insulation performance of a vacuum thermal insulator (2) more efficiently than the conventional techniques, achieving improved integrity. The present invention provides a method for producing a composite thermal insulator (1) including a vacuum thermal insulator (2), the vacuum thermal insulator (2) comprising a core (2a) and an enclosure (2b) configured to wrap the core (2a) and include a weld portion (5) which extends along an outer periphery of the core (2a) and at which portions of the enclosure (2b) are welded together, the vacuum thermal insulator(2) having vacuum-sealed inside, the method including: a first step of covering edges (7) of the vacuum thermal insulator (2) including the weld portion (5) with a first heat insulating foam (3) foamed in advance and placing the first heat insulating foam (3) along the outer periphery of the core; and a second step of forming a second heat insulating foam (4) configured to cover the first heat insulating foam (3) placed in the first step and at least part of the vacuum thermal insulator (2).
摘要:
A vacuum heat insulator (1) includes a core member (3) that is a stack of fibrous sheets (2) and a cover member (4) enclosing the core member (3). Each of the fibrous sheets (2) includes curved chopped fibers (5b) and curved fibers (6).
摘要:
A heat storage unit includes: a heat storage material that contains water and high polymers that exhibit hydrophilicity or hydrophobicity depending on a temperature; a heat exchanger that causes heat exchange to be performed between a heating fluid and the heat storage material to heat the heat storage material and store heat in the heat storage material, and causes heat exchange to be performed between a heat utilization fluid and the heat storage material to receive heat from the heat storage material and cause heat to be transferred from the heat storage material; and a container that is filled with the heat storage material and houses the heat exchanger.
摘要:
Provided are a heat storage apparatus, a heat storage system, and a heat storage method, which are capable of reducing a heat dissipation loss, while suppressing an increase in operating cost and preventing a situation in which an energy shortage occurs even when heat extraction has proceeded. The heat storage apparatus includes a heat storage tank including a heat storage material having heat storage property and heat dissipation property, a heat source machine configured to generate heat to be supplied to the heat storage material, a first heat medium flow path, in which a first heat medium flows, and which is thermally connected to each of the heat storage material and the heat source machine, and a plurality of temperature sensors arranged in the heat storage tank to measure a temperature of the heat storage material. The plurality of temperature sensors is arranged at positions of different distances from a heat conductive surface of the first heat medium flow path, at which the heat storage material is in contact with the first heat medium flow path. The heat source machine generates heat based on detection results from the plurality of temperature sensors.
摘要:
Provided is a method of manufacturing a vacuum heat insulating material, including: a fiber supply step of supplying a plurality of first fibers (5) having linearity and a plurality of second fibers (6) having crimpability onto a conveyor (13); and a compression step of compressing, after the fiber supply step, the plurality of first fibers (5) and the plurality of second fibers (6) on the conveyor (13) to obtain a continuous fiber body (10) including the plurality of first fibers (5) and the plurality of second fibers (6).
摘要:
A regenerative heat exchange apparatus includes a heat storage tank, a heat storage material disposed inside the heat storage tank and having a heat storage capability and a heat rejection capability, a liquid passage covered by the heat storage material inside the heat storage tank, the liquid passage having a first straight pipe portion through which a liquid flows horizontally, a heat medium passage covered by the heat storage material inside the heat storage tank, the heat medium passage being adjacent to and in a set with the liquid passage, the heat medium passage having a second straight pipe portion through which a heat medium flows horizontally, the heat medium being at a temperature higher than the liquid. The first straight pipe portion is located vertically lower than the second straight pipe portion.
摘要:
A vacuum insulator includes: a core member (2) obtained by laminating a fiber material; a concave-convex film (1) in which a concave-convex shape is formed; and a packaging member (4) covering the concave-convex film (1) laminated on the core member (2), and sealed by pressure reduction to form a concave-convex shape (3) corresponding to the concave-convex shape of the concave-convex film (1) on a surface of the packaging member (4).