A) Finned tube B) Plate C) Double-pipe D) Shell and tube
A) Aluminum B) Copper C) Steel D) Plastic
A) Gaskets B) Bearings C) Valves D) Fins
A) Control temperature B) Reduce pressure C) Distribute the fluid evenly to the tubes D) Separate hot and cold fluids
A) Control flow rate through the exchanger B) Increase heat transfer C) Remove air from the system D) Regulate pressure
A) Regulate the flow of refrigerant into the evaporator B) Cool the refrigerant C) Remove moisture from the system D) Increase the pressure of the refrigerant
A) Regular cleaning and maintenance B) Higher flow rate C) Less insulation D) Increased pressure
A) Accumulation of deposits on heat transfer surfaces B) Decrease in fluid velocity C) Expansion of tube material D) Increase in heat transfer rate
A) Direct-contact B) Counter-flow C) Parallel-flow D) Cross-flow
A) Thermal resistance B) Log mean temperature difference (LMTD) C) Net thermal unit (NTU) D) Heat transfer coefficient
A) Counter-flow B) Direct-contact C) Parallel-flow D) Cross-flow
A) Plate heat exchanger B) Surface condenser C) Evaporator D) Double-pipe heat exchanger
A) High-pressure applications greater than 30 bar. B) Applications requiring robust construction due to high pressure. C) Processes involving fluids at temperatures greater than 260 °C. D) Low-pressure applications with temperatures below 260 °C.
A) Maximizing the flow-induced vibration. B) Minimizing the axial strength. C) Ensuring enough room for corrosion resistance. D) Reducing the availability of spare parts.
A) 15% annually. B) 1% annually. C) About 5% annually. D) 10% annually.
A) Through external attachment B) As flat plates that are stacked inside a tank C) By embedding them in concrete D) Using flexible rubber sheets
A) Laminar flow method B) Boardman-Germer method C) Ramachandra K. Patil (et al.) method D) Scott S. Haraburda method
A) They reduce the overall size of the heat exchanger. B) They increase the likelihood of fouling. C) They allow for thermal expansion without stressing the tubesheets. D) They eliminate the need for baffles.
A) Circular patterns B) Square grids C) Chevron, dimpled, or other patterns D) No patterns at all
A) Larger than 5mm B) Equal to 10mm C) Smaller than 1mm D) Between 1mm and 3mm
A) Shell and tube B) Welded plate variety C) Plate-and-frame D) Circular plate pack
A) Fermenting yogurt B) Heating milk before pasteurization C) Cooling milk in large direct-expansion stainless steel bulk tanks D) Storing cheese
A) Microchannel B) Solid-liquid or solid – gas C) Gas – liquid D) Immiscible liquid – liquid
A) Creates a second flowpath called the 'Shell side' B) Contains only the Plate side flowpath C) Holds the gaskets D) Is used for cleaning purposes
A) Organic Rankine cycle (ORC). B) Phase-change heat exchanger. C) Steam Rankine cycle (SRC). D) Dynamic scraped surface heat exchanger.
A) Ammonia. B) Toluene. C) Water. D) Pentafluoropropane (R-245fa).
A) Boardman-Germer method B) Turbulent flow method C) Ramachandra K. Patil (et al.) method D) Scott S. Haraburda method
A) Nuclear power plants B) Oil refineries C) Air separation plants D) Chemical manufacturing
A) Construction industry B) Textile industry C) Automotive industry D) Dairy industry
A) Titanium B) Stainless steel C) Aluminum alloys D) Copper
A) Shape. B) Size. C) Cost. D) Color.
A) Material strength vs corrosion resistance. B) Pressure drop vs fluid velocity. C) Thermal efficiency vs size. D) Capital cost vs operating cost.
A) It contracts and forms a flat surface B) It bulges out around the welds when pressurized C) It becomes thinner and more flexible D) It is removed to create channels
A) Less compact B) Larger size C) Higher refrigerant charges D) Lower airside pressure drops
A) Combustion products may enter living space. B) Airflow will increase significantly. C) The system will become more energy-efficient. D) The furnace will produce less heat.
A) Freeze protection B) Microchannel design C) High pressure drops D) Low refrigerant charges
A) Square (90°) pattern. B) Rotated triangular (60°) pattern. C) Rotated square (45°) pattern. D) Triangular (30°) pattern. |