Multiple flow heat exchanger
Апстракт
Air conditioning cycle with CO2 refrigerant is dominantly transcritical. External heat exchanger (gascooler) encounters strong refrigerant temperature change. If the gascooler has two or more refrigerant passes, the problem of heat losses between the passes may arise. If a corrugated fin is brazed between two refrigerant tubes of different temperatures, it may happen, under certain combination of boundary conditions, that respectable amount of heat flow passes conductively through the fin from the hotter to the colder side. This heat flow is considered a heat loss.
Theoretical analysis and prototype testings were performed in order to evaluate this heat loss under various initial and boundary conditions of an automotive air conditioning system with CO2 refrigerant.
The constructive solutions intended to prevent or substantially decrease this heat loss were proposed.
Кључне речи:
Transcritical AC Cycle / Gascooler / Heat LossИзвор:
United States Patent, 2013, US8561681B2Издавач:
- United States Patent Office
Колекције
Институција/група
Inovacioni centarTY - PAT AU - Antonijević, Dragi PY - 2013 UR - https://machinery.mas.bg.ac.rs/handle/123456789/4416 AB - Air conditioning cycle with CO2 refrigerant is dominantly transcritical. External heat exchanger (gascooler) encounters strong refrigerant temperature change. If the gascooler has two or more refrigerant passes, the problem of heat losses between the passes may arise. If a corrugated fin is brazed between two refrigerant tubes of different temperatures, it may happen, under certain combination of boundary conditions, that respectable amount of heat flow passes conductively through the fin from the hotter to the colder side. This heat flow is considered a heat loss. Theoretical analysis and prototype testings were performed in order to evaluate this heat loss under various initial and boundary conditions of an automotive air conditioning system with CO2 refrigerant. The constructive solutions intended to prevent or substantially decrease this heat loss were proposed. PB - United States Patent Office T2 - United States Patent T1 - Multiple flow heat exchanger IS - US8561681B2 UR - https://hdl.handle.net/21.15107/rcub_machinery_4416 ER -
@misc{ author = "Antonijević, Dragi", year = "2013", abstract = "Air conditioning cycle with CO2 refrigerant is dominantly transcritical. External heat exchanger (gascooler) encounters strong refrigerant temperature change. If the gascooler has two or more refrigerant passes, the problem of heat losses between the passes may arise. If a corrugated fin is brazed between two refrigerant tubes of different temperatures, it may happen, under certain combination of boundary conditions, that respectable amount of heat flow passes conductively through the fin from the hotter to the colder side. This heat flow is considered a heat loss. Theoretical analysis and prototype testings were performed in order to evaluate this heat loss under various initial and boundary conditions of an automotive air conditioning system with CO2 refrigerant. The constructive solutions intended to prevent or substantially decrease this heat loss were proposed.", publisher = "United States Patent Office", journal = "United States Patent", title = "Multiple flow heat exchanger", number = "US8561681B2", url = "https://hdl.handle.net/21.15107/rcub_machinery_4416" }
Antonijević, D.. (2013). Multiple flow heat exchanger. in United States Patent United States Patent Office.(US8561681B2). https://hdl.handle.net/21.15107/rcub_machinery_4416
Antonijević D. Multiple flow heat exchanger. in United States Patent. 2013;(US8561681B2). https://hdl.handle.net/21.15107/rcub_machinery_4416 .
Antonijević, Dragi, "Multiple flow heat exchanger" in United States Patent, no. US8561681B2 (2013), https://hdl.handle.net/21.15107/rcub_machinery_4416 .