At a certain position in a piping system, a fluid with a specific gravity of 1.50 passes through an 8-cm diameter pipe with a velocity of 1.2 m/s. At some point downstream the elevation of the pipe has increased by 15 m and the pipe size has been reduced to 5-cm diameter. The temperature of the fluid remains constant at 30 degrees Celsius during this process. A heat loss of 25 N-m/kg occurs in this process however. Determine the change in pressure between these two locations.