Abstract: A solar energy utilization window includes two plate members, and a first prism, and an energy collection portion, in which the energy collection portion is installed with a predetermined gap interposed between the energy collection portion and a second side of a first prism, and in a triangular prism, a refractive index and each internal angle of the triangle are set so that there are three types of optical paths of sunlight that has passed through an outer glass and entered into a first prism from the first side.

Abstract: An absorption refrigerator using a circulation cycle of a regenerator, a condenser, an evaporator, and an absorber includes temperature sensors, a storage unit storing the approximation function for obtaining the second concentration based on second detection results obtained by each of the temperature sensors, a calculation unit to apply the second detection results to the approximation function to obtain the second concentration and a control unit to execute control in accordance with the second concentration. The approximation function is obtained using a response surface method by interpolation or approximation, based on data including first detection results obtained by temperature sensors and first concentrations each corresponding to when each of the first detection results has been obtained.

Abstract: A multi-stage prism window includes: a first prism configured to condense light whose angle is equal to or larger than a first predetermined angle on a reflective member and retroreflect the light; a second prism configured to condense light whose angle is equal to or larger than a second predetermined angle on an endothermic member or a reflective member and use the light for indoor heating; and a liquid control mechanism configured to fill at least one of a first space and a second space with a liquid, the first space being in contact with the first prism from an indoor side, the second space being in contact with the second prism from the indoor side.

Abstract: A determination device able to determine a cause of generation of gas with a simple configuration is provided. The determination device includes a pressure gauge that detects pressure in a gas storage chamber that stores non-condensable gas generated in an absorber of an absorption refrigerator, and a hydrogen sensor that detects an amount of hydrogen discharged from the gas storage chamber. Further, a determining unit determines a cause of generation of the non-condensable gas stored in the gas storage chamber based on a detection result of the hydrogen sensor and a detection result of the pressure gauge.

Abstract: An equipment determination method of a cogeneration system includes the steps of: calculating a total hot water supply load for each day over a predetermined period longer than a specific period based on each unit hot water supply load for hour according to hot water supply use by consumers; setting as a representative period a specific period on which the total hot water supply load becomes at least a low load among the calculated total hot water supply load for each day; determining a capacity of the cogeneration equipment based on the total hot water supply load on the set representative period; and determining a capacity of the plurality of hot water storage tanks based on an amount of hot water supply load exceeding the capacity of the determined cogeneration equipment among each unit hot water supply load for two or more divided periods including the set representative period.

Abstract: This latent heat storage body is provided with: a latent heat storage material; and a temperature-sensitive material exhibiting different functions at a temperature equal to or higher than a specific temperature and at a temperature lower than the specific temperature, in which a phase change temperature is changed by using the function of the temperature-sensitive material according to ambient temperature. This latent heat storage body is characterized in that: the phase change temperature is set, by the function of the temperature-sensitive material when the ambient temperature is lower than the specific temperature, to one among a low temperature setting and a high temperature setting having a higher temperature than the low temperature setting; and the phase change temperature is set to the other setting among the low temperature setting and the high temperature setting by the function of the temperature-sensitive material when the ambient temperature is equal to or higher than the specific temperature.

Abstract: An outer wall material includes a first transparent member integrally or separately including a transparent plate material and a prism portion; and a reflection member provided on a second side of the prism portion of the first transparent member. The prism portion causes the reflection member to collect light whose angle with respect to a normal line of the plate material is equal to or greater than a predetermined angle and to retro-reflect the collected light, and transmits light whose angle with respect to the normal line of the plate material is less than the predetermined angle.

Abstract: A desiccant window includes: a transparent triangular prism that is disposed between first and second plates, is configured of a first side along the first glass and second and third sides which have an angle with respect to the first side in a sectional view, and forms (three) types of optical paths; and a desiccant heat receiving unit that has hygroscopicity and is disposed between the first and second plates, is installed on the second side of the triangular prism), and is received solar heat and releases absorbed moisture by heating using the received heat received.

Abstract: A multistage prism window includes first and second transparent plate materials, a first prism, a reflection member, a second prism, and a heat absorption member. The first prism collects, onto the reflection member, light whose angle with respect to a normal line of the first and second transparent plate materials is equal to or greater than a first predetermined angle and transmits light whose angle with respect thereto is smaller than the first predetermined angle. The second prism collects, onto the heat absorption member, light whose angle with respect to the normal line is smaller than the first predetermined angle and equal to or greater than a second predetermined angle and transmits light whose angle with respect thereto is smaller than the second predetermined angle.

Abstract: An absorption chiller includes a heating medium supply pipe configured to supply a heating medium from a heating medium pipe to a cooling water pipe; a cooling water discharge pipe configured to discharge a cooling water from the cooling water pipe to the heating medium pipe; a control valve provided on the heating medium supply pipe and the cooling water discharge pipe, respectively; and a controller configured to cause the control valve to be opened and to cause the heating medium in the heating medium pipe to be introduced into the cooling water pipe, when a temperature detected by a cooling water temperature detector is equal to or lower than a predetermined temperature, in a wet lay-up state including a state in which a cooling water inlet shut-off valve and a cooling water outlet shut-off valve are closed and the cooling water pipe is filled with the cooling water.

Abstract: A structural body includes a refrigerant between a first plate and a second plate. A circulation structural part between the first and second plates includes a reservoir portion provided on a first plate side. In the circulation structural part, the refrigerant from the reservoir portion which has evaporated due to heat of the first plate side reaches a second plate side, condenses on the second plate side and is returned to the reservoir portion again. A temperature sensitive mechanism is in a first state when a temperature of the first plate side is equal to or higher than a predetermined temperature to allow refrigerant circulation, and is in a second state different from the first state when the temperature is lower than the predetermined temperature to prohibit the refrigerant circulation.

Abstract: Provided is a retroreflective window which can block a direct light ray and reflect it to a sun side while maintaining a viewability and enhance a usability of the direct light ray. The retroreflective window (1 to 3) includes first and second transparent plate materials, a transparent first prism which is disposed between the first and second transparent plate materials, and a switching member which is installed facing a second side of the first prism and can be switched between a reflective state in which a reflectance of visible light rays and infrared rays is 70% or more and a non-reflective state in which the reflectance of visible light rays and infrared rays is 30% or less.

Abstract: A pivot window includes a laminated body capable of rotating in a state where a first plate material is directed outdoors and in a state where a second plate material is directed outdoors. The laminated body uses at least one of solar heat, atmospheric heat, and atmospheric humidity, and provides a humidity control effect to the room in both of the state where the first plate material is directed outdoors and the state where the second plate material is directed outdoors. The laminated body is not limited to the one providing the humidity control effect, but may be the one providing a temperature control effect. The laminated body may use the concentration of a specific gas in the atmosphere such as atmospheric oxygen concentration, atmospheric carbon dioxide concentration, and atmospheric volatile organic compound (VOC) concentration, and may provide a component concentration adjusting effect to the room.

Abstract: A latent heat storage window includes a plurality of cells, an operation mechanism, and a magnetic material. The plurality of cells are formed by encapsulating a latent heat storage material including two or more components. The operation mechanism can be operated by a user. The magnetic material causes a specific component of the two or more components included in the latent heat storage material to be unevenly distributed when the operation mechanism is operated.

Abstract: A pivot window includes a laminated body. The laminated body includes two sheets of a plate material; a peripheral end member provided at a peripheral end parts of the two sheets of the plate material; and a cell array plate material which is interposed between the two sheets of the plate material and which has a plurality of cells respectively having a gas phase and encapsulating a latent heat storage material having a melting point and a freezing point in a specific temperature range. The pivot window further includes a rotation mechanism for causing the laminated body to perform at least half rotation in a vertical direction.

Abstract: A ceiling illumination window is provided with a transparent prism, and a reflecting member provided on a second edge of the transparent prism. Further, the transparent prism is installed in such a way as to enable light incident thereon at an angle, relative to a normal line to first and second transparent plates, that is at least equal to a prescribed angle to be reflected at a third edge using a critical angle. In addition, when light is incident at an angle at least equal to the prescribed angle relative to the normal line, the transparent prism emits the light toward an indoor ceiling side using at least two types of optical path having different numbers of reflections, using reflection at least one of the transparent prism surface and the reflecting member, and when light is incident at an angle less than the prescribed angle, the transparent prism allows the light to be transmitted through the third edge.

Abstract: A dehumidification structure includes: a moisture absorbent which has temperature sensitivity for exhibiting hydrophobicity and releasing water at a temperature equal to or higher than a predetermined temperature and for exhibiting hydrophilicity and absorbing water at a temperature lower than the predetermined temperature; a moisture absorbent chamber in which the moisture absorbent is disposed; and a water draining mechanism configured to drain water released from the moisture absorbent and accumulated in the moisture absorbent chamber. The moisture absorbent is provided to allow reception of solar heat or heat from a heating body that is heated by sunlight. The water draining mechanism is configured to drain the water using weight of the water when an amount of water released by the moisture absorbent and accumulated in the moisture absorbent chamber reaches at least a predetermined amount.

Abstract: A method of manufacturing a vacuum heat insulator includes preparing a hollow body that has heat resistance equal to or higher than a level to withstand a flame of 781° C. for 20 minutes and that has a hollow portion in the hollow body, introducing, into the hollow portion of the hollow body, an inorganic foaming agent that has the heat resistance and foaming the foaming agent to form a foam having open cells, or introducing an inorganic foam having the heat resistance and open cells, and then solidifying the foam, and evacuating the hollow portion after the foam is solidified or during the solidification of the foam.

Abstract: Plate glasses of the same material are stacked each other to form a hollow portion between the plate glasses. The stacked plate glasses are heated to a temperature which is a softening point thereof or below and is a temperature or above at which the material can be diffusion-bonded at a predetermined pressure or higher. The heated and stacked plate glasses are pressed to a predetermined pressure or higher using a die. Together with or subsequent to the pressing, a gas pressure is applied into the hollow portion by feeding gas into the hollow portion. Next, the stacked plate glasses, in which the gas pressure is applied to the hollow portion, are cooled to the strain point while being held with the die.

Abstract: The method for manufacturing a plate glass is a method for manufacturing the plate glass having sides of at least 30 cm or more and a surface thereof on which a predetermined shape is formed. In the manufacturing method, the flat plate glass is heated to a temperature which is lower than a softening point and at which the heated flat plate glass is deformable by being pressed at a predetermined pressure or higher, the heated flat glass, which has been molded by pressing the flat plate glass with a die having a die structure for forming the predetermined shape, is cooled to the strain point while being held with the die. Further, in the manufacturing method, the pressing is performed with the die having a coefficient of thermal expansion whose difference from that of the plate glass is 2.0×10?6/K or less.