The turbine efficiency directly reduces the work produced in the turbine and therefore the overall efficiency. The inefficiency of pump increases the enthalpy of the liquid leaving the pump and therefore reduces the amount of energy required to evaporate the liquid. However the energy to drive the pump is usually more expensive than the energy to feed the boiler.
Intermediate Thermodynamics Question. Even though it would increase efficiency, why is it expensive to operate with...
Why can polymers operate only at low temperatures, even though polymer chains contain covalent bonds just like ceramics? Explain. please try to type the question.
Why can polymers operate only at low temperatures, even though polymer chains contain covalent bonds just like ceramics? Explain.
Why does lactic acid production increase during intense exercise EVEN THOUGH THERE IS PLENTY OF OXYGEN AVAILABLE?
The scenario The conversion of ammonia to hydrogen and nitrogen is not very efficient, even though it's only weakly endothermic (~11 kJ/mol). The addition of a solid metal catalyst can speed up the reaction. The rate law for the decomposition of ammonia is expected to be zero order with these metals at relatively low pressure and high temperatures. For example, on solid platinum the rate law is Rate = k[NH3]° = k. As the total pressure increases, however, the reaction...
Question: The article mentioned that, even though the United States Department of Agriculture (USDA) increased its estimates of the quantities of corn and soybeans that would be harvested from the 2019 growing season, futures prices for corn and soybeans rose in January. Which of the following is the reason given for the price increases? A Analysts and traders expect lower plantings of corn and soybeans in 2020, B Makers of products, such as cereals, made with corn and soybeans were...
QUESTION 29 Which of the following conditions would cause the break-even point to increase? a. unit variable cost decreases b.unit variable cost increases c. unit selling price increases d. total fixed costs decrease
need help with these two question You complain of being tired all the time even though you are eating adequate amounts of carbohydrates, protein and fat to nourish your body. Your friend suggests that you start taking B-vitamins. Which of the following answers explains why your friend would make this suggestion and would taking B-vitamins be a beneficial way to boost your energy level? Choose all that apply B vitamins have calories and therefore provide energy B-vitamins are coenzymes that...
Question 2 A vapour compression cycle acts as both a heat source (radiators and a hot water load) and a cooling load (food preservation). The system requires an operating temperature of 50°C to support the bulk of the heating load and -10°C for the cooling load. a) Determine the operating pressures of the cycle in bar. Also, assuming we require a maximum temperature of 90°C to operate certain higher temperature heat processes (for hygiene related reasons), determine the enthalpy at...
Economic efficiency is the primary guide in answering which of the fundamental questions in a market economy? Multiple Choice O How can the system accommodate change? 0 What will be produced? Who is to receive the output? 0 0 How is the output to be produced? < Prev 15 of 50 !!! Next > Firms are motivated to minimize production costs because Multiple Choice the government provides tax credits and subsidies to low-cost producers. o least-cost production techniques use the...
Any help with this 4 part question would be appreciated. Thanks so much in advance. Astro Co. sold 20,800 units of its only product and incurred a $56,672 loss (ignoring taxes) for the current year as shown here. During a planning session for year 2018’s activities, the production manager notes that variable costs can be reduced 50% by installing a machine that automates several operations. To obtain these savings, the company must increase its annual fixed costs by $158,000. The...