Heat pumps are used, among other things, to heat houses. This likes to be warm taken from the ground using underground pipes, where there is sufficient depth Temperatures remain at a relatively constant level. In a heat exchanger, the Evaporator, the thermal energy absorbed is transferred to the heat pump. We look at the soil at 9C. In the area surrounding the pipe, the average earth temperature drops to around 7C. It should be a PE hose with a wall thickness of 12 mm, pipe length 10m, for Inner diameter of 25mm. and a conductivity of 0.42 W/(Km). Glycol is used as a fluid The following material properties are used: The glycol occurs at 0C, the mass flow should be 0.05 kg/s. p=1120 kg/m, cp = 2.3 kJ/(kg K), = 0.27 W/(mK), n = 22 mPas 1) Determine whether it is constant heat flux or constant temperature and provide evidence. 2) Find the convective heat transfer coefficient using the Re number and Nu number. 3) Plot the outlet temperature 4) Enter the pressure loss and the required pump performance as a function of pipe length. 5) If the heat pump releases heat at 50C and 50% of the maximum possible Coefficient of performance achieved: Bear the heat flow given off to the interior as well as the electrical power consumed by the heat pump as a function pipe length.