Abstract:
The invention relates to a refrigerant circuit comprising at least one heat absorption element and at least one heat dissipation element. According to the invention, heat transfer elements carrying out the same function can be operational in the refrigerant circuit at different pressure levels of the refrigerant. A refrigerating system provided with the inventive refrigerant circuit is also disclosed.
Abstract:
A heating, ventilation, air conditioning and refrigeration (HVAC & R) system having a compressor, a heat exchanger, an expansion valve, and a multichannel heat exchanger connected in a closed refrigerant loop. The multichannel heat exchanger has at least two fluid flow paths cooled by a flow of air from an air-moving device through the multichannel heat exchanger. Each of the at least two fluid flow paths have an inlet and an outlet in communication there between. The multichannel heat exchanger also has at least one flow regulator disposed in at least one outlet to regulate through at least one fluid flow path in response to the air flow through the heat exchanger to achieve a substantially equal temperature of a fluid flowing in the at least two flow paths.
Abstract:
A flow regulator being disposed in at least one of the outlets of a condenser to regulate the fluid flow in the condenser. The condenser has at least two fluid flow paths and an air flow drawn through the condenser by a condenser fan. The flow regulator regulates the fluid flow to substantially equalize the temperature of the fluid flow in the at least two fluid paths and to provide more efficient cooling of the fluid in the fluid flow paths.
Abstract:
The invention concerns an air conditioning unit wherein the refrigerating fluid loop (1) comprises in standard fashion a compressor (2), a condenser (3), a liquid/gas separating reservoir (5), an expansion device (6) and an evaporator (7). The invention is characterised in that a pre-expansion device (4), inserted between the condenser (3) and the reservoir (5), is capable of producing a pressure drop ranging between 1.5 and 14 bars to reduce the fluid pressure down to its vapour saturating pressure. The reservoir can also contain a variable amount of liquid to compensate the fluid losses in the loop by maintaining the sub-cooling temperature constant in the condenser and consequently the heating capacity capable of being absorbed by the evaporator.
Abstract:
Die Erfindung betrifft einen Kältemittelkreislauf mit zumindest einem Wärmeaufnehmer und zumindest einem Wärmeabgeber, wobei funktionsgleiche Wärmeübertrager bei unterschiedlichen Kältemitteldruckniveaus betreibbar sind, sowie eine Kälteanlage mit einem solchen Kältemittelkreislauf.
Abstract:
A refrigerating system, comprising an orifice tube system having such a refrigerating cycle that refrigerant flows through a compressor (1), a condenser (10), an orifice tube (3), an evaporator (4), and an accumulator (5) in that order and returns to the compressor (1), the condenser (10) further comprising a multi−flow type heat exchanger having a plurality of paths (P1) to (P3), wherein the intermediate path (P2) is formed as a decompression path for reducing the pressure of the refrigerant, after the refrigerant is condensed by the first path (P1), the condensed refrigerant is decompressed and evaporated by the decompression path (P2), and the evaporated refrigerant is re−condensed by the third path (P3), whereby excellent response characteristics to a variation in a thermal load on the condenser and a sufficient refrigerating performance can be provided.
Abstract:
The invention concerns an air conditioning unit wherein the refrigerating fluid loop (1) comprises in standard fashion a compressor (2), a condenser (3), a liquid/gas separating reservoir (5), an expansion device (6) and an evaporator (7). The invention is characterised in that a pre-expansion device (4), inserted between the condenser (3) and the reservoir (5), is capable of producing a pressure drop ranging between 1.5 and 14 bars to reduce the fluid pressure down to its vapour saturating pressure. The reservoir can also contain a variable amount of liquid to compensate the fluid losses in the loop by maintaining the sub-cooling temperature constant in the condenser and consequently the heating capacity capable of being absorbed by the evaporator.