An environmental test chamber, and method of providing an environmental test chamber, includes combining an equipment module made up of an equipment housing and air treatment equipment in the equipment housing with a selected one or more of a plurality of chamber modules connected with the equipment module to provide the environmental test chamber. The equipment housing includes an opening defining an airflow passage and an airflow path extending to the airflow passage. The air treatment equipment includes air moving equipment flowing air along the airflow path through the airflow passage and air-conditioning equipment in the flow path. The air treatment equipment includes one or more of (i) heating equipment for selectively heating the flowing air, (ii) cooling equipment for selectively cooling the flowing air, (iii) humidification equipment for selectively humidifying the flowing air, and/or (iv) dehumidification equipment for selectively dehumidifying the flowing air. A plurality of chamber modules of different sizes from each other are provided. Each of the chamber modules has a chamber housing with an opening defining an airflow passage in the chamber housing that aligns with the airflow opening in the equipment module and an access opening that is selectively opened for accessing an interior of the chamber module. In this manner, the one or ones of the chamber modules that is connected with the equipment module determines a configuration of the environmental test chamber.

An environmental test chamber, and method of providing an environmental test chamber, includes combining an equipment module made up of an equipment housing and air treatment equipment in the equipment housing with a selected one or more of a plurality of chamber modules connected with the equipment module to provide the environmental test chamber. The equipment housing includes an opening defining an airflow passage and an airflow path extending to the airflow passage. The air treatment equipment includes air moving equipment flowing air along the airflow path through the airflow passage and air-conditioning equipment in the flow path. The air treatment equipment includes one or more of (i) heating equipment for selectively heating the flowing air, (ii) cooling equipment for selectively cooling the flowing air, (iii) humidification equipment for selectively humidifying the flowing air, and/or (iv) dehumidification equipment for selectively dehumidifying the flowing air. A plurality of chamber modules of different sizes from each other are provided. Each of the chamber modules has a chamber housing with an opening defining an airflow passage in the chamber housing that aligns with the airflow opening in the equipment module and an access opening that is selectively opened for accessing an interior of the chamber module. In this manner, the one or ones of the chamber modules that is connected with the equipment module determines a configuration of the environmental test chamber.

A cooling or freezing device which includes a helical coil into which a compressed gas is forced; a cylindrical chamber that is disposed adjacent to the helical coil; and an insulating sleeve. The coil is formed in a cylindrical form and enclosed within the insulating sleeve, while the insulating sleeve is constructed and arranged for receiving a bottle or can for cooling. A compressed gas cylinder is disposed within the cylindrical chamber; and an actuation member is coupled with the cylindrical chamber and constructed and arranged to selectively expel the compressed gas from the compressed gas cylinder to the helical coil.

A multi-fluid heat exchanger (100) includes a primary section (102) and a secondary section (104) arranged contiguous with the primary section (102). The multi-fluid heat exchanger (100) further includes a first heat transfer channel (106) arranged to carry a first fluid (118) and the first heat transfer channel (106) extends between the primary section (102) and the secondary section (104) and carries the first fluid (118) between the sections (102,104). The multi-fluid heat exchanger (100) also includes a second heat transfer channel (108) disposed only at the primary section (102) and arranged to carry a second fluid (114) for heat exchange between the first and second fluids (112,114) at the primary section (102) and a third heat transfer channel (110) disposed only at the secondary section (104) and arranged to carry a third fluid (116) for heat exchange between the first and third fluids (112,116) at the secondary section (104).

A cold storage box 1 comprises a housing 2 internally having a storage space S for a cold storage object, and one or more heat exchanger tubes 3 provided in the storage space S; wherein the heat exchanger tubes 3 are each a multilayer tube comprising an outer tube with thermal conductivity having an outer surface facing the storage space S, and as inner tube provided inside the outer tube; a first brine solution that does not freeze at 0 C. is contained between the outer tube and the inner tube; and a refrigerant, or a second brine solution that does not freeze at 0 C. is contained inside the inner tube.

A cold storage box 1 comprises a housing 2 internally having a storage space S for a cold storage object, and one or more heat exchanger tubes 3 provided in the storage space S; wherein the heat exchanger tubes 3 are each a multilayer tube comprising an outer tube with thermal conductivity having an outer surface facing the storage space S, and as inner tube provided inside the outer tube; a first brine solution that does not freeze at 0 C. is contained between the outer tube and the inner tube; and a refrigerant, or a second brine solution that does not freeze at 0 C. is contained inside the inner tube.

Process of refrigeration induced by an external stimulus comprising the application of an external stimulus selected among hydrostatic pressure, uniaxial pressure, electric field and illumination with light, to an organic-inorganic hybrid material of crystalline structure with hexagonal packing, of formula ABX.sub.3 (I), where A is a given monovalent organic cation or a given mixture of monovalent organic cations or a given mixture of monovalent organic cations and monovalent inorganic cations, B is a given divalent metal cation, a given mixture of divalent metal cations, or a given 50/50% atomic mixture of a monovalent cation and a trivalent cation, and X is a halide anion or a mixture thereof. A device with cooling capacity induced by an external stimulus, comprising the above organic-inorganic hybrid material.

Process of refrigeration induced by an external stimulus comprising the application of an external stimulus selected among hydrostatic pressure, uniaxial pressure, electric field and illumination with light, to an organic-inorganic hybrid material of crystalline structure with hexagonal packing, of formula ABX.sub.3 (I), where A is a given monovalent organic cation or a given mixture of monovalent organic cations or a given mixture of monovalent organic cations and monovalent inorganic cations, B is a given divalent metal cation, a given mixture of divalent metal cations, or a given 50/50% atomic mixture of a monovalent cation and a trivalent cation, and X is a halide anion or a mixture thereof. A device with cooling capacity induced by an external stimulus, comprising the above organic-inorganic hybrid material.

A method for efficient operation of an environmental control system having a plurality of air cycle machines includes disabling operation of a first air cycle machine from the plurality of air cycle machines, enabling operation of one or more additional air cycle machines from the plurality of air cycle machines, monitoring at least one operating characteristic of the environmental control system, and resuming operation of the first air cycle machine upon determining that a condition has been satisfied based on the at least one operating characteristic of the environmental control system.

Aircraft turbine engines are controlled by complex electronic devices such as FADEC and PSS units. These devices can be adversely impacted by the engine environment including the condensing of evaporated water. Aspects of the present disclosure include unique heat exchangers to control the temperature of these electronic devices to assure their proper operation.