摘要:
A cooling medium charge amount detector capable of detecting whether or not an actual amount of a cooling medium is a desired amount in comparison with the amount of the cooling medium necessary for a desired degree of supercooling on an inlet side of an expansion valve in a refrigeration circulation system, without using a sensor or computation means. A cooling medium on the inlet side of an expansion valve 23 in a refrigeration circulation system 20 is allowed to flow into a cooling medium charge amount detector 40. Throttles 41, 42, 43 are disposed in this cooling medium charge amount detector 40, and sight glasses 44, 45, 46 are disposed at both ends of the throttles 41, 42, 43 to detect a gas-liquid condition of the cooling medium. When the cooling medium flows into this cooling medium charge amount detector, the shift of the cooling medium from a liquid condition to a two-phase gas-liquid condition is checked upstream or downstream of any throttle to match the load condition at that time. In this way, a pressure difference proportional to the degree of supercooling can be detected and eventually, whether or not the charge amount of the cooling medium is suitable in the refrigeration circulation system 20 can be detected.
摘要:
A refrigerant recovery system has a refrigerant recovery vessel which is connected to a refrigerant-recovered refrigeration circuit. A gaseous refrigerant in the refrigerant-recovered refrigeration system is sucked into the refrigerant recovery vessel due to the difference between the pressure in the refrigerant-recovered refrigeration circuit and the refrigerant recovery wheel. The refrigerant recovery vessel is cooled by a refrigeration circuit provided in the refrigerant recovery system, so that the sucked gaseous refrigerant is a liquified. to the refrigerant recovery vessel, a recovery tank made of a cartridge type is connected. The liquefied refrigerant from the refrigerant recovery vessel is sent to the tank. When the temperature of the recovery tank is not low enough, the liquefied refrigerant sent into the tank is evaporated and then returns to the refrigerant recovery vessel so that the refrigerant is liquefied in the vessel again. Such processes are repeated so that the temperature of the tank is gradually lowered by the liquified refrigerant sent thereto and hence the liquefied refrigerant is accumulated in the tank.
摘要:
The present invention provides an adsorption-type cooling apparatus comprising first, second, third, and fourth adsorption devices filled with a coolant and contain adsorbents which adsorb evaporated coolant and desorb the adsorbed coolant during heating. Adsorption cores provide heat exchange between the adsorbents and a heat medium, and evaporation and condensation cores provide heat exchange between heating medium and the coolant. A cooling device in which heating medium cooled in the evaporation and condensation cores circulates and cools the object of cooling. A heating means supplies a high-temperature heat medium to the first-fourth adsorption devices. A cooling means supplies a low-temperature heat medium which has a temperature lower than that of the high-temperature heat medium to the first-fourth adsorption devices. Also, a switching control means is provided which switches between multiple states.
摘要:
Heat is absorbed from a first heat emitter and a second heat emitter is cooled by an adsorption type refrigerator operating by that absorbed heat. When the amount of emission of heat of the first heat emitter exceeds a predetermined amount of heat, the heat absorbed in the heat medium by a first heat collector is discharged to the outside air by an outdoor unit without being supplied to the adsorbent of the refrigerator. On the other hand, when the amount of emission of heat of the first heat emitter falls below a predetermined amount, the heat medium which had been supplied to a first heat exchanger for heating the adsorbent is switched to return to the first heat collector without flowing to the outdoor unit.
摘要:
An (n)th adsorber and (n+1)th adsorber among a plurality of adsorbers in an adsorption process are connected thermally in series, and adsorbent of the (n)th adsorber which is a previous stage is cooled by adsorption of refrigerant by adsorbent of the (n+1)th adsorber which is a subsequent stage. That is to say, adsorbent of a first-stage adsorber on the left-hand side which adsorbs vapor of refrigerant such as water which exits from an evaporator is strongly cooled by adsorption of vapor from refrigerant such as water which flows through a cooling pipe by adsorbent of a second-stage adsorber on the right-hand side, large adsorption capacity is imparted by a reduction in temperature, and as a result, the evaporator demonstrates large refrigeration capacity. Consequently, a compact adsorptive type refrigeration apparatus which demonstrates large refrigeration capacity while having a compact adsorber and using a comparatively small quantity of adsorbent is provided. The present invention can also be applied with respect to an adsorption process of a refrigeration system in which adsorbent circulates in an adsorber.
摘要:
According to an embodiment, a communication apparatus includes a key storage unit configured to store therein a cryptographic key; a receiving unit configured to receive a message; an analyzing unit configured to analyze whether the message includes an access request for the cryptographic key; a generating unit configured to, when the message includes the access request, generate request information used to request an access to the cryptographic key requested by the access request; and an access controller configured to control the access to the cryptographic key based on the request information.
摘要:
A data control apparatus includes a mapping-table managing unit that manages a mapping table that is associated with a corrupted-data recovery function of recording data and error correcting code data as redundant data that is given separately from the data, distributed and stored in units of stripe blocks in the plural nonvolatile semiconductor memory devices, the mapping table containing arrangement information of the data and the error correcting code data; a determining unit that determines whether to differentiate frequencies of writing the data into the semiconductor memory devices; and a changing unit that changes the arrangement information by switching the data stored in units of the stripe blocks managed using the mapping table to differentiate the frequencies of writing the data into the semiconductor memory devices, when the determining unit determines that the frequencies of writing the data into the semiconductor memory devices are to be differentiated.
摘要:
A size storage unit stores therein a block size of a memory element. A buffering unit executes buffer processing configured to store data received from a RAID (Redundant Arrays of Inexpensive/Independent Disks) controller into a buffer, and to write the data stored in the buffer into the memory element. A stripe-size receiving unit receives a stripe size that indicates a size of a unit of access at time of access to the memory element by the RAID controller. Writing processing is configured to write data received from the RAID controller into the memory element without executing the buffer processing by the buffering unit, when the stripe size is n times of the block size (n is a positive integer).
摘要:
A RAID is configured using plural nonvolatile semiconductor memory devices to enable recovery of data stored in the nonvolatile semiconductor memory devices, and data is read from the nonvolatile semiconductor memory device included in the RAID in response to a data reading request inputted from outside. When an error occurs during the reading, data for which the reading error occurs is recovered, and rewritten into an area of the nonvolatile semiconductor memory device in which the reading error occurs.
摘要:
In a data transfer scheme using a caching technique and/or a compression technique which is capable of reducing the network load of a network connecting between data transfer devices, correspondences between data and their names are registered at the data transfer devices and the corresponding names are transferred, instead of transferring the data, for those data for which the correspondences are registered, so that it is possible to reduce the amount of transfer data among the data transfer devices. Server side data transfer devices and client side data transfer devices can be provided in multiple-to-one, one-to-multiple, or multiple-to-multiple manners.