7 A shell-and-tube process heater is to be selected to ater (C, = 4190 J/kg · °C) from 20°C to 90°C by steam g on the shell side. The heat transfer load of the heater is V. If the inner diameter of the tubes is 1 cm and the ve- of water is not to exceed 3 m/s, determine how many

Determine the work required (in kJ/kg) for a pump that is used to increase the pressure of a liquid water stream from 100 kPa to 1500 kPa isothermally at 20 °C. The specific heat of water (C) is 0.0035 kJ/kg.K. its specific volume is 0.001031 m³/kg and its volume expansivity (B) is 250x10 K

A wind tunnel is considered to be a steady-state operation, the system receives one hundred fifty pound- mass per minute of air at 285 psf, and 270 degrees Fahrenheit. The fluid is discharged from a point five meters above the datum/ reference point at 4,255 psf and 750 degrees Fahrenheit. Assuming that the velocity found at the inlet is 6,285 feet per minute and the Heat supplied is 580 BTU/min. During the process the density decreases by 15 percent and the internal energy is decreased by 1.05 horsepower. Determine the Work done in (a) Horsepower and BTU/s. (b) Considering the given on 3a, if the Work done is doubled, determine the Heat supplied during the process? (c) Considering the given on 3b, if Heat is doubled, what is the work done after 6 minutes?

ce an answer is submit you will be unable to return to this part. A refrigeration system is to cool bread loaves with an average mass of 390 g from 30°C to -10°C at a rate of 1200 loaves per hour with refrigerated air at -30°C. Take the average specific and latent heats of bread to be 2.93 kJ/kg-°C and 109.3 kJ/kg. Determine the size of the compressor of the refrigeration system, in kW, for a COP of 1.2 for the refrigeration system. 4 The size of the compressor of the refrigeration system is kW.