Chapter 6, Problem 6.2P

A reversible heat engine absorbs 3000 kJ from a reservoir at 1000 K and rejects 2500 kJ at 500 K. Find the heat interchanged with the reservoir at 300 K and the net work output of the engine.

Let's assume that we generate electrical energy through a turbine generator. A reversible adiabaticBefore entering the turbine, it must be raised to a pressure of 10000 kPa and a temperature of 450 ºC. From the steam turbinepressure drops up to 150 kPa and a temperature of 100 C while exiting. The flow rate of steam in the turbine is 39 kg / s. ThisMeanwhile, your ambient temperature is measured as 25 ºC and pressure as 100 kPa. Considering these conditions, steamhow much exergy does it have when entering and exiting?, how much power does the turbine generate ?, how much more than this turbinepower can be generated and what is the second-law efficiency of this turbine? Calculate.

An inventor draws 25000 kJ/h of heat from a heat well at -30°C, which requires 1.2 kW of power. He claims to have developed a refrigeration cycle that dumps heat into the heat source at 20°C. environment There is no other energy transfer with Evaluate this claim.

I need the answer as soon as possible

H6. An air conditioner in an upper-floor apartment unit is turned on during a hot summer afternoon. If heat can be removed from the interior at a rate of 1.5 kW, estimate the time required to cool the air inside the apartment to its final temperature. Your estimate should create any needed input data and should incorporate factors like the size of the apartment and the behavior of air.

According to the Carnot cycle, the thermal efficiency of a working heat machine is 28%, and water vapor is used as the working fluid. Heat transfer to the working fluid occurs at 350°C, and at this time the fluid passes from a saturated liquid state to a saturated vapor state. Since 5 kg of fluid circulates per hour in the cycle, find the power of this heat machine using the entropy of evaporation.

I need a quick solution please

. Consider three reservoirs that are TH = 473.2 K, TL = 293.2 K and TI = 277.2 K.  A Carnot heat engine can be reversed and used as either a heat pump or a refrigerator.  In the case of a heat pump the heat flow to the higher temperature reservoir is the desired output and it is used to heat a room or building.  In the case of the refrigerator the desired energy flow is the heat in from a region to be cooled.  For the heat pump or refrigerator, the work input is provided by electricity.  For this information answer the following questions: a) Calculate the Carnot Efficiency of a heat engine that operates between TH and TL. b) A room is maintained at a constant temperature of 20 C and has a heat loss of 20,000 W. Consider this room for a period of 3 hours. The surroundings are at a temperature of TI.  In one option the room is heated using resistive heaters that are operated with electricity.  b1)Determine the electrical energy input to these heaters. b2)Determine the efficiency of…

Plot the Carnot efficiency of Heat engine at thermal power plant over temperature range of 400 to 750°C.