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ProblemsClear skill: Heat Exchangers Build a practice set

ProblemCourse & topicStatus

HEAT:9906201A single horizontal condenser tube of outer diameter D = 25 mm and length L = 2.40 m has an outer wall temperature…

Heat ExchangersHeat Transfer Problem Solving

Heat exchangers and effectiveness methodsHeat Transfer · Calculation

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HEAT:9906202A condenser uses N = 12 horizontal tubes in a vertical in-line bank.

Heat ExchangersHeat Transfer Problem Solving

Heat exchangers and effectiveness methodsHeat Transfer · Calculation

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HEAT:9906203Mathematical problem title

Heat ExchangersHeat Transfer Problem Solving

Heat exchangers and effectiveness methodsHeat Transfer · Calculation

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HEAT:9906204Two infinite, opaque, black plates face each other in vacuum.

Heat ExchangersHeat Transfer Problem Solving

Heat exchangers and effectiveness methodsHeat Transfer · Calculation

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HEAT:9906205A gray sphere of diameter 40 mm, emissivity 0.65, and uniform surface temperature 520 K is suspended in a large…

Heat ExchangersHeat Transfer Problem Solving

Heat exchangers and effectiveness methodsHeat Transfer · Calculation

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HEAT:9906206Two aligned, coaxial, parallel disks of diameters 0.20 m and 0.50 m are separated by 0.15 m along their common axis.

Heat ExchangersHeat Transfer Problem Solving

Heat exchangers and effectiveness methodsHeat Transfer · Calculation

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HEAT:9906207An infinitely long triangular duct has three opaque walls of widths 0.10 m, 0.10 m, and 0.14 m.

Heat ExchangersHeat Transfer Problem Solving

Heat exchangers and effectiveness methodsHeat Transfer · Calculation

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HEAT:9906208Two infinite gray plates, emissivities 0.80 and 0.40, are maintained at 800 K and 350 K.

Heat ExchangersHeat Transfer Problem Solving

Heat exchangers and effectiveness methodsHeat Transfer · Calculation

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HEAT:9906209A long gray inner cylinder of diameter 50 mm and emissivity 0.70 is surrounded by a concentric gray outer cylinder…

Heat ExchangersHeat Transfer Problem Solving

Heat exchangers and effectiveness methodsHeat Transfer · Calculation

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HEAT:9906210A cubical furnace interior of side 2.0 m has a black floor at 1100 K, a black roof at 500 K, and four side walls…

Heat ExchangersHeat Transfer Problem Solving

Heat exchangers and effectiveness methodsHeat Transfer · Calculation

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HEAT:9906211A thin horizontal roof, modeled as gray with solar absorptivity 0.55 and longwave emissivity 0.90, is exposed on…

Heat ExchangersHeat Transfer Problem Solving

Heat exchangers and effectiveness methodsHeat Transfer · Calculation

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HEAT:9906212A selective absorber plate has solar absorptivity 0.95 and infrared emissivity 0.08.

Heat ExchangersHeat Transfer Problem Solving

Heat exchangers and effectiveness methodsHeat Transfer · Calculation

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HEAT:9906213Mathematical problem title

Heat ExchangersHeat Transfer Problem Solving

Heat exchangers and effectiveness methodsHeat Transfer · Calculation

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HEAT:9906214Two infinite parallel gray plates have emissivities 0.30 and 0.60 and temperatures 700 K and 450 K.

Heat ExchangersHeat Transfer Problem Solving

Heat exchangers and effectiveness methodsHeat Transfer · Calculation

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HEAT:9906215Two infinitely long, parallel plates of widths 0.25 m and 0.40 m lie in the same plane with a 0.10 m gap between…

Heat ExchangersHeat Transfer Problem Solving

Heat exchangers and effectiveness methodsHeat Transfer · Calculation

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HEAT:9906216A horizontal uninsulated steel pipe of outer diameter 73 mm and outer surface temperature 420 K runs through a…

Heat ExchangersHeat Transfer Problem Solving

Heat exchangers and effectiveness methodsHeat Transfer · Calculation

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HEAT:9906217A flat-plate solar collector has a single transparent cover of solar transmissivity 0.88.

Heat ExchangersHeat Transfer Problem Solving

Heat exchangers and effectiveness methodsHeat Transfer · Calculation

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HEAT:9906218A small opaque gray instrument package of area 0.12 m², emissivity 0.75, mass 2.4 kg, and specific heat 850 J/kg·K…

Heat ExchangersHeat Transfer Problem Solving

Heat exchangers and effectiveness methodsHeat Transfer · Calculation

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HEAT:9906219Mathematical problem title

Heat ExchangersHeat Transfer Problem Solving

Heat exchangers and effectiveness methodsHeat Transfer · Calculation

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HEAT:9906220A counterflow heat exchanger has UA = 1200 W/K.

Heat ExchangersHeat Transfer Problem Solving

Heat exchangers and effectiveness methodsHeat Transfer · Calculation

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HEAT:9906221Mathematical problem title

Heat ExchangersHeat Transfer Problem Solving

Heat exchangers and effectiveness methodsHeat Transfer · Calculation

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HEAT:9906222Mathematical problem title

Heat ExchangersHeat Transfer Problem Solving

Heat exchangers and effectiveness methodsHeat Transfer · Calculation

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HEAT:9906223Saturated steam condenses at 373 K on the shell side of a condenser.

Heat ExchangersHeat Transfer Problem Solving

Heat exchangers and effectiveness methodsHeat Transfer · Calculation

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HEAT:9906224An opaque gray square plate, 0.80 m on a side, emissivity 0.50, and temperature 550 K, faces a second parallel…

Heat ExchangersHeat Transfer Problem Solving

Heat exchangers and effectiveness methodsHeat Transfer · Calculation

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A shell-and-tube condenser processes saturated steam at 1.20 bar (Tsat = 105.0 °C, h_fg = 2244 kJ/kg,

ρ_v

= 0.697…

Radiation of wavelength 4.0 μm and intensity

I_λ(0)

= 2.0×10⁴ W/m²·sr·μm enters a stagnant isothermal gas layer of…

Hot oil

(c_p

= 2.2 kJ/kg·K) at 0.40 kg/s enters a counterflow double-pipe heat exchanger at 390 K and is cooled to…

Engine oil

(c_p

= 2.0 kJ/kg·K) at 0.15 kg/s and 380 K and water

(c_p

= 4.18 kJ/kg·K) at 0.20 kg/s and 300 K flow…

Air

(c_p

= 1007 J/kg·K) at 0.80 kg/s and 320 K is cooled in a single-pass cross-flow heat exchanger by water…