$1.$Heat pump datasheet give SCOP $=4.$ Find price of heat energy produced by heat pump if electrical

energy cost is $0,2$ EUR$/$kWh$.$ Give answer in eurocent per kWh of heat

$2.$ District heating boiler house with power output $10$ MW consuming wood chips with moisture $40\%$

decide to install flue gas condenser. If flue gas temperature will be $40$ C please advice how big will be

boiler house power after condenser installation.

$3.10$ MW rated wind farm consist of three turbines, if assume wind velocity $8$ m$/3($for rated power

calculation$)$ please advice rotor diameter if three turbines are similar size..

$4.$ Compressed air storage volume $1000$ m$3$ pressure is $100$ bars at $20$ C degree please calculate power

output if air is expanded in turbine with efficiency $0\mathrm{.}7$