Αποτελέσματα Αναζήτησης
Algebraic expressions for the correction factor Fhave been developed for vari- ous shell-and-tube and cross-flow heat exchanger configurations [1–3], and the results may be represented graphically. Selected results are shown in Figures 11S.1 through 11S.4 for common heat exchanger configurations.
4.0 – HEAT EXCHANGERS CALCULATIONS: The main basic Heat Exchanger equation is: Q = U x A x ΔT m = The log mean temperature difference ΔTm is: ΔT m = (T 1 – t 2) – (T 2 – t 1) = °F T 1 = Inlet tube side fluid temperature; t 2 = Outlet shell side fluid temperature; T 2 = Outlet tube side fluid temperature; t 1 = Inlet shell side fluid ...
A heat exchanger is a component that allows the transfer of heat from one fluid (liquid or gas) to another fluid. Reasons for heat transfer include the following:
Geankoplis 4th ed. 4.5‐4. Water flowing at a rate of 13.85 kg/s is to be heated from 54.5 to 87.8oC in a double‐pipe heat exchanger by 54,430 kg/h of hot gas flowing counterflow and entering at 427oC ( 1.005 / ).
A heat exchanger is a piece of equip-ment that continually transfers heat from one medium to another. There are two main types of heat exchangers. • Direct heat exchanger, where both media are in direct contact with each other. It is taken for granted that the media are not mixed together.
Abstract. This chapter provides an overview of how different heat exchanger types, prob-lems, and networks are analyzed. Heat exchangers are categorized by shape, flow arrangement, area to volume ratio, and channel size. The problem type depends on what information is available and what is sought.
The heat exchanger must withstand the service conditions of the plant environment. The exchanger must be maintainable. In other words, a configuration that permits cleaning and replacement of any component that is especially vulnerable to corrosion, erosion, vibration, or aging, must be chosen.
