What Is a Heat Pump and How Does It Work? | Andy's | HVAC Service

A heat pump is a device that transfers heat from one place to another, from inside to outside or from outside to inside. In the winter a heat pump works like a heater, extracting heat energy from outside and transferring it inside. In the summer the process reverses and it will remove heat from your home and transfer it outside like an air conditioner. What is the difference between an air source heat pump, water source heat pump and a geothermal heat pump? There are many different names and types of heat pumps but they can all be categorized as one of three different types: air source, water source or geothermal. An air source heat pump transfers energy in the air from one place to another. It uses an outdoor heat exchanger coil to extract heat from the air and an indoor heat exchanger coil to transfer the heat into air ducts, radiators or a hot water tank. This process can also be reversed so that it may be used as an air conditioner as well. A water source heat pump operates similarly to the air source heat pump but uses water instead of air to transfer heat. These types of pumps are not available to everyone because of the resources needed, but if you live near a well, lake or other natural resource this can be a viable option. A water source heat pump cycles water through a series of pipes that are laid out in water. As the water cycles, it collects the heat and transfers that energy into your home. Again this process reverses in the summer and carries heat out of your house, also by way of the water in the pipes. A geothermal heat pump is also called a ground source heat pump. In this system, the pump uses the earth as its heat source. Conceptually, a geothermal heat pump is the same as an air source or water source heat pump. There are two different methods of installation: A horizontal ground coupled system buries horizontal piping 4 feet or more under the ground and circulates a fluid like antifreeze or water through it. A vertical ground coupled system has the same process as its horizontal counter part but the pipes are buried vertically.

1. Does atmospheric pressure increase or decrease as you rise? As in like going up many floors in an elevator.?

Atmospheric pressure is sometimes defined as the force per unit area exerted against a surface by the weight of air above that surface at any given point in the Earth's atmosphere. In most circumstances atmospheric pressure is closely approximated by the hydrostatic pressure caused by the weight of air above the measurement point. Low pressure areas have less atmospheric mass above their location, whereas high pressure areas have more atmospheric mass above their location. Similarly, as elevation increases there is less overlying atmospheric mass, so that pressure decreases with increasing elevation

2. Air Force: Air Traffic Controller?

It has been rated as one of the most stressful jobs in the world. Its a good job in the Air Force, because on the civilian side, you can make some serious money, but it is very stressful /

3. Using Venturi effect for air ventilation, or, can fluid be passively driven in a loop?

Having thought about it, I am pretty sure the answer is:No, this scheme is impossible (when the wind is flowing left-to-right) if the airflow does not change with time. We can imagine associating an air-pressure to every pixel in the diagram, creating a "pressure-field". The flow (arrows) point in the direction of the gradient of this pressure-field. Gradients point from high-to-low pressure. It is impossible to follow gradients in a loop, and thus there can be no loops in your flow field. However, it is possible when the flow oscillates with time. In this case, air could be pushed along a high pressure wave that takes it from an on-average-low to an on-average-high pressure, like how you could push a ball up a slightly sloped mattress by always pushing down on the bit of the mattress slightly uphill from it. One way to have such an oscillating airflow would be to put one of these on the top of the tube: