1-37E The temperature of a system drops by 45°F during a cooling process. Express this drop...
2.) Suppose you are to analyze a cooling system, the room conditions are 75 °F and 50% relative humidity, the SHR is equal to 0.4 and the initially targeted supply temperature is 55 °F. What can be said about this process? A.) Tadp = 40 °F B.) The process is simple cooling. C.) This process has no ADP, cannot handle the latent load. D.) The sensible load is too high!
River water at a temperature of 290. K is used for cooling in an industrial process. The water returned to the river is at a temperature of 320. K. What percentage of the river water can be used for cooling if the river temperature is required by law to increase by no more than 10.0 K?
a. the sensible heat ratio (SHR) for the cooling and dehumidifying process; (2 Marks) b. the supply air volume flow rate to the office in m3 /s; (5 Marks) c. the air dry bulb temperature and specific enthalpy of the mixture of outdoor and recirculating air; (4 Marks) d. the cooling coil’s load in kW. (5 Marks) e. the apparatus dew point during the cooling and dehumidifying process; and (4 Marks) f. Discuss, with reasons, the possible effects on the...
During an adiabatic process, the temperature of 6.10 moles of a monatomic ideal gas drops from 495 degree C to 147 degree C. Find the work it does. kJ Find the heat it exchanges with the surroundings. kJ Find the change in internal energy. kJ
During a cooling process of a stainless steel plate, water at 30°C flows over this plate at a velocity of 0.02 m/s. The stainless steel plate (k=19 W/mK) has 1.15 meter long in the flow direction) and the plate width is 0.7 meter. The plate has a uniform surface temperature of 70°C. Determine, 1. The average friction coefficient 2. The total drag force due to friction (N) 3. The average convection heat transfer 2. coefficient (W/m K) 4. The steady...
During an adiabatic expansion the temperature of 0.490 mol of argon (Ar) drops from 64.0 °C to 10.0 °C. The argon may be treated as an ideal gas. How much work does the gas do? Express your answer with the appropriate units. t μΑ ? 288 W J Submit Previous Answers Request Answer X Incorrect; Try Again; 2 attempts remaining You may have forgotten that the process is adiabatic, not isobaric. Recall the definition of this process, and use the...
During the adiabatic process, the change in the temperature of the system is A. Greater than zero. B. Equal to zero. C. Less than zero. D. Any of the above. E It depends on the initial temperature.
Part C The pressure, temperature and volume of a system change differently during the process of isothermal expansion. Indicate whether each quantity increases (I), remains constant (C), or decreases (D). Your answers should describe the changes of pressure, temperature, and volume (in that order). Separate your answers with commas (e.g., I,C,D means pressure increases, temperature remains constant, and volume decreases). Part D What is the work W done by the gas as it expands isothermally from V0 to fvV0? Express...
During the adiabatic process, the change in the temperature of the system is A. Greater than zero. B. Less than zero. C. Equal o zero. D. Any of the above. E. It depends on the initial temperature.
Water is often used for cooling processes. Usually it is recycled and comes from cooling towers so the water is usually only available at 80°F for cooling. Bypasses are often used for control purposes. The following is an abstraction of the cooling process of a plant. 4) (Note, the +Q's are heat generated by the system to be transferred to the cooling water, 's are removed from the cooling water) 4 Dg) Btu/min Fl 500 lb/min TI 80°F F9 =0.75...