fouling is one of the main parameters in design of any exchanger. ignoring this parameter causes problems such as overheating or under- heating of process streams. in this article a heat exchanger network was designed using process streams data in cdu of tehran refinery. then using tema fouling factors, network exchangers were designed and area and cost were estimated. by changing fouling facto...

This paper proposes a new MINLP model for heat exchanger network synthesis that includes streams with phase change. The model considers every possible combination of process streams that may arise within a chemical process: streams with sensible heat, streams with latent heat, and streams with both latent and sensible heat. As part of the optimization strategy, the superstructure is modeled wit...

this paper presents a simple methodology for cost estimation of a near optimal heat exchanger network, which comprises mixed materials of construction. intraditional pinch technology and mathematical programming it is usually assumed that all heat exchangers in a network obey a single cost model. this implies that all heat exchangers  in a network are of the same type and use the same materials...

This paper presents a simple methodology for cost estimation of a near optimal heat exchanger network, which comprises mixed materials of construction. Intraditional pinch technology and mathematical programming it is usually assumed that all heat exchangers in a network obey a single cost model. This implies that all heat exchangers  in a network are of the same type and use the same mate...

The multimedia streams transmissions, done over the existing "best-effort" networks, are continuously increasing in number, making network congestion more likely to appear. The paper presents a traffic-based adaptive technique for transmitting pre-recorded multimedia streams, regardless the network condition. The adaptive mechanism is implemented by a feedback-controlled multimedia system which...

Network Streams are a generic means by which distributed applications can exchange information. Using Network Streams information, irrelevant of its type, can be exchanged using a generic interface. Information is encapsulated into classes, that are self-descriptive and partially re ective. Network streams act as generic container channels through which such objects are passed. Filter Agents ar...