热耗率（heat rate）
热耗率（heat rate）
相关考题：
单选题However fast or slow the combustion rate, it is still a （） between carbon, hydrogen, sulphur and oxygen that releases heat.Aphysical deformationBstate exchangeCchemical reactionDcoalescence
单选题Which of the statements listed concerning heat transfer is correct?（）AHeat is always transferred at a constant rateBHeat transfer rate increases as temperature difference increasesCThe rate of heat transfer is not affected by temperature differenceDThe high temperature region is known as a heat sink
单选题The rate of heat transfer from a hot region to a cold region is affected most by the （）.Asize of the heat sinkBtemperature difference between the regionsCsize of the heat sourceDtotal heat of the system
单选题Which of the following statements is correct concerning heat transfer?（）AHeat is given off from a high temperature region known as a heat sinkBHeat transfer rate is affected most by the size of the heat sink involvedCHeat transfer rate is affected most by the temperature difference between the heat source and the heat sinkDHeat transfer by radiation will occur only by mass motion of a fluid substance
单选题The rate of heat transfer between the hot and cold fluids passing through a shell-and-tube type heat exchanger will （）.Aremain constant along the tubes lengthBbe greatest in a single pass counter flow heat exchangerCremain constant throughout the heat exchangerDvary from section to section through out the heat exchanger
单选题The purpose of designing some waste heat boilers with sinuous fire tubes, is to（）Aincrease exhaust gas velocity through the boilerBreduce accumulations of carbon deposits on the heat transfer surfacesCeliminate exhaust gas pulsations and noiseDincrease the rate of heat transfer to the waterside
单选题Generating tubes in waste heat boilers are finned to （）.Areduce gas flow turbulenceBprevent exhaust gas corrosionCincrease the rate of combustionDincrease the rate of heat transfer
单选题Fins are installed on the generating tube surfaces in waste heat boilers to （）.Aprevent soot fires in the exhaust systemBprevent exhaust gas erosion of the tubesCincrease the velocity of exhaust gas flowDincrease the rate of heat transfer
单选题Physical exertion on the part of a person who has fallen into cold water would（）.Abe the best thing to try if there was no rescue in sightBincrease survival time in the waterCincrease the rate of heat loss from the bodyDnot affect the heat loss from the body