Open loop systems are 1- cooler 2- Fan 3- Washing machine 4- Heater 5- Oven 6- Immersion rod 7- Water Pump (Domestic) and Close loop systems are 1- Air conditioning system on a furnace 2- Hot water heating system that uses boilers and radiators 3- Motor cooling system on a car. 4- Air conditioning system on a car 5- Air circulating system on a submarine and passenger air plane 6- Joystick on a video game 7- Pneumatic system that lifts cars at auto repair shops