Abstract:
A portable, self-sustaining refrigeration system for storing and transporting temperature sensitive materials comprising an insulated housing constructed of double wall plastic panels having an R value per inch of at least 20, and a thermal storage phase change material in the form of a reversible gel for operation at about 0.degree. to 10.degree. C. wherein the reversible gel is enclosed in a sealed liquid-impervious enclosure, is disclosed.
Abstract:
An insulating vacuum panel comprising an insulating support member enclosed within a sealed, flexible polymeric envelope, the envelope comprising a polymeric barrier film which minimizes permeation of gas and liquid through the barrier film, the panel having an R value per inch of at least about 20 wherein the enclosed insulated vacuum panel is useful as insulation to maintain an essentially constant temperature in a closed structure, and a system for storing and transporting temperature-sensitive materials wherein the insulated vacuum panels are employed to provide and maintain a constant temperature in the system are described.
Abstract:
An insulation panel comprises a mineral fiber board having a density between 8 and 28 pounds per square foot, the fibers having no organic binder thereon, and between 5 and 40 percent by weight of particulate material packed in the interstices of the board, and a gas-tight envelope encapsulating the board, the envelope being evacuated to a vacuum between 10.sup.-4 Torr and 10 Torr.
Abstract:
Precipitated silica, formed by the interaction of sodium water glass and sulfuric acid, followed by mechanical processing, is employed as an insulating material having a low thermal conductivity. The precipitated silica is dried, compressed, placed in an evacuable pouch, and evacuated. The resulting board-like insulation configuration is used directly as insulation in, for example, household refrigerators.
Abstract:
A method for producing a thermally insulating molded article comprises the following steps: a) providing a hollow mold (1); b) filling a free-flowing porous material (10) into the hollow mold (1); c) solidifying the free-flowing porous material (10) in the hollow mold (1); d) evacuating and sealing the hollow mold (1). The invention further relates to a thermally insulating molded article comprising a hollow mold (1) and a core made of porous material (10) solidified in the hollow mold.
Abstract:
Ein Verfahren zum Fertigen eines wärmeisolierenden Formkörpers umfasst die Schritte: a) Bereitstellen einer Hohlform (1); b) Einfüllen eines schüttfähigen porösen Materials (10) in die Hohlform (1); c) Verfestigen des schüttfähigen porösen Materials (10) in der Hohlform (1); d) Evakuieren und Verschliessen der Hohlform (1)
Abstract:
An oil holding tank (40) is communicated to the case (10c) of the compressor (10). Part of the refrigerant discharged from the compressor (10) is introduced into the oil holding tank (40) so that the lubrication oil (L) is allowed to flow out from the oil holding tank (40) and the lubrication oil (L) which flows out is allowed to return to the case (10c). The presence of the lubrication oil (L) is detected from a comparison between the temperature (TK1) of the refrigerant introduced from the compressor (10) to the oil holding tank (40) and the temperature (TK2) of the lubrication oil (4) flowing out from the oil holding tank (40). On the basis of the result of the detection, it is judged whether or not the amount of the lubrication oil (L) in the case (10c) is appropriate.