Waste heat recovery helps in mcq

Which of the following depends on physical properties of fluids as well as geometry of the heat exchanger? The efficiency of a stand-alone waste heat recovery helps in mcq turbine without any heat recovery system will be in the range of. The waste heat recovery equipment in a combustion system will be more economical when the exit flue gases are at a temperature of. In an industry, exhaust gas from the furnace is used for power generation by installing waste heat recovery steam boiler and a steam turbine.

How good are you at mechanical engineering? You can take these emerging trends in mechanical engineering MCQ quiz to check your knowledge of the latest technologies. With this test, you will get to learn new things also, along with practice. So, take the quiz and keep yourself updated with the emerging trends in mechanical engineering. The more you score, the more is your knowledge.

Waste heat recovery helps in mcq

The most efficient solution of heat supply at low and medium temperature is: a. Using a fuel that is directly combusted in the energy consuming equipment. Using electricity. The most consumers of heat at low or medium temperature are supplied with heat using as energy carrier: a. Water in different forms. Compressed air. Flue gasses. Adding thermal insulation for a boiler is: a. No-cost measure. Low-cost measure. High-cost measure. Recovering heat from waste steam within heating and cooling equipment is: a. Adjusting airflow rates to suit changing occupancy conditions and use of building space within heating, ventilation and air-conditioning system is: a. Installation of variable speed drivers within refrigeration system is: a. Using intake air from the coolest location for compressed air system is: a.

Explanation Waste Heat Recovery is a process that allows plants to capture and utilize waste heat generated during various industrial processes. Combined cycle is a combination of.

B a Fixed carbon b Volatile matter c Hydrogen d All of the above 23 Which one of the following boilers utilizes the combination of suspension and A grate firing? Oxidation of CO to CO2 will yield a kCal b kCal c kCal d kCal 48 The maximum loss that takes place in a fully condensing steam turbine power D plant is a Flue gas loss b Steam distribution loss c Radiation and insulation loss d Condenser losses 49 The difference between mean solid and mean gas velocity in FBC boiler is called B a Fluidization factor b Slip velocity c Settling velocity d Terminal velocity 50 Which one of the following is a high temperature heat recovery device? Then the type of co- generation is called as: a gas turbine b diesel generator c topping cycle d bottom cycle 73 1. Open navigation menu. Close suggestions Search Search. User Settings.

With most of the world committed to limiting global warming to 1. As we approach the end of , we have only six years left to implement many decarbonization levers. But industrial companies are often uncertain about the right technical path to immediately reduce emissions. Technologies that are net present value NPV positive and quick to implement, such as various types of energy efficiency measures, can help companies achieve their decarbonization goals. Recovering waste heat is a potential avenue to effectively reducing emissions. Every year, the world consumes over exajoules EJ —or , terawatt-hours TWh —of final energy, mainly by burning fossil fuels and generating heat. Part of this generated heat is harnessed for useful purposes, such as producing electricity or driving chemical reactions, but most is unused. Recovering this waste heat can greatly reduce the use of primary fuels and, therefore, emissions. Recovered waste heat could also make the energy transition easier and more economical.

Waste heat recovery helps in mcq

Of this, around one third is wasted. This wasted heat can be lost to the atmosphere at all stages of the process; through inefficient generation, transmission or final use of that energy. Waste heat recovery aims to minimize the amount of heat wasted in this way by reusing it in either the same or a different process. Waste heat can be recovered either directly without using a heat exchanger—e. Direct heat recovery is often the cheaper option but its use is restricted by location and contamination considerations. In indirect heat recovery, the two fluid streams are separated by a heat transfer surface, which can be categorized as either a passive or active heat exchanger.

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Flag for inappropriate content. The electric motor is charged by the engine and through regenerative braking, so it does not need to be charged externally like a fully electric vehicle. The car also uses regenerative braking to convert kinetic energy into electricity, which is stored in a battery for later use. Correct Answer A. Heat wheels, also known as rotary heat exchangers, are designed to transfer heat between two air streams. They are also widely used for providing power to the electrical systems and accessories in vehicles. A higher specific power means that the battery can provide more energy for its weight, making it more efficient and long-lasting. Rankine cycle first followed by a Brayton cycle. Explanation The correct answer is Predictive Cruise Control. Explanation Toyota launched the first hybrid Prius in Japan in Each of these technologies enables the recovery and utilization of waste heat in different ways. What is not basic characteristic of supercritical boilers? Oxidation of CO to CO2 will yield a kCal b kCal c kCal d kCal 48 The maximum loss that takes place in a fully condensing steam turbine power D plant is a Flue gas loss b Steam distribution loss c Radiation and insulation loss d Condenser losses 49 The difference between mean solid and mean gas velocity in FBC boiler is called B a Fluidization factor b Slip velocity c Settling velocity d Terminal velocity 50 Which one of the following is a high temperature heat recovery device? Decreases heat demand for heating. Explanation The most common form of hybrid energy vehicle is a hybrid electric car.

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Skip carousel. Overall heat transfer coefficient. Recuperators recover waste heat from exhaust gases and transfer it to the incoming air or fluid, improving overall energy efficiency. This effect occurs when there is a temperature difference between two different materials, causing a voltage to be generated. This combination of gasoline and electric power makes hybrid electric cars more fuel-efficient and environmentally friendly compared to traditional gasoline-powered vehicles. Carousel Next. Using a fuel that is directly combusted in the energy consuming equipment. Predictive Cruise Control is a type of cruise control system that uses RADAR and GPS technology to anticipate and adjust the vehicle's speed based on upcoming road conditions, such as curves, hills, and speed limit changes. In order for this process to work efficiently, a material with good electrical conductivity and poor thermal conductivity is required. Browse from millions of quizzes. Shell and tube exchangers and run around coil exchangers may also be used in certain applications, but they are not typically used in the pressurizing section of a dairy plant. A thermoelectric generator converts waste heat directly into electricity. A bottoming cycle plant generates heat first. What is Scribd? Explanation Waste heat recovery in the industry offers a major advantage of both reducing pollution and increasing efficiency.