1. Steam at h=1300 BTU/lbm enters a boiler where 760 BTU/lbm of heat is added. If 5 BTU/lbm are lost to the surroundings, what is the final enthalpy of the steam? Do not use chatgpt, Only handwritten

1. Moist air enters a refrigeration coil at 89 F dry-bulb temperature and 65 F thermodynamic wet bulb temperature at a rate of 14oo cu ft per min. The surface temperature of the coil is 55 F . If 3.5 tons of refrigeration are available, find the dry bulb and wet bulb temperatures of the air leaving the coil. Assume sea level pressure.

Saturated steam at 40∘C is to be cooled to saturated liquid in a condenser. The mass flow rate of the steam is 17.3 kg/s . Assume no pressure loss. a)Determine the rate of heat transfer. Q = ? MW

This is the only Superheated R-134a property table we are given, how do we find the final state of R-134a the superheated state from here?   Thank you

Air is cooled and dehumidified at constant pressure as shown in the figure below. Heat removed by the cooling coil is 130kW. Find air mass flow rate, air volumetric flow rate, condensation flow rate and sketch al states in a psychrometric diagram . Use AirH20 as the working fluid PLEASE NOTE: T2 has a typo, it should be 16.7 degrees Centigrade, not 16.7 degrees Fahrenheit, and all temperatures should be in Centigrade

I do not understand how to fix state 3 with the given information. Without knowledge of state 3 or 4s (the 4th state if the process were actually isentropic) I don't see how it's possible to get temperature or enthalpy of state 3.

TH 3 kg of air as an ideal gas undergoes a Carnot refrigeration cycle as shown The isothermal expansion occurs at 300K and isothermal compression occurs at 600K. The heat transfer to air during isothermal expansion is 125 kJ. Pressure at the end of figure. isothermal expansion is 75 kPa. a. Find pressure at the beginning of the isothermal expansion. Show all work and explain your numbers. b. Sketch this cycle on the T-s diagram. Show on the diagram the system states (1,2,3, and 4), the cycle direction, and the cycle work (not its amount)

An ammonia simple vapor operator between evaporator and condenser temperature of 20 C and 35 C respectively. the system used introducing 5000kg of sec in 20 hours. a 100x200 mm compressor with a compressor efficiency of 80% and electric input to the motor driving the compressor is 14 kw motor efficiency is 90%, determine heat, (b) work indicated (c) brake work (d) mechanical efficiency

I need final answer only What is the equivalent specific evaporation of a steam generator producing 2250 kg/hr of wet steam at 2 MPa, 98% quality(hf =908.79; hg = 2799.5 KJ/kg). The feedwater is at 60 C(hf =251.13; hg = 2609.6 KJ/kg). Fuel used is 24 API at 20 C at 350 kg/hr

Sea water for cooling enters a condenser at 32℃ and leaves 42℃. The Condenser temperature 65℃, Calculate LMTD. ANSWER: 28℃