Abstract: An apparatus and method for aligning two coaxially coupled rotatable shafts. A servo operated multi axis positioning device is movable along a longitudinal axis parallel to the axis of the shafts, and movable vertically to position a laser range (LRF) adjacent to the two shafts, which measures the distance between the LRF and a spot on the shafts. A controller having a processor and memory communicates with the positioning device and the LRF to collect data at two axial positions on each shaft. At each position the LRF measures the distance to the shaft and stores the measurement and location data. The LRF is vertically repositioned and the measurement and storing steps are repeated over a scan distance sufficient to provide enough data to determine the location of the shaft center. The processor then calculates and compares the shafts centerlines and determines the necessary adjustments needed to move the shafts into coaxial alignment.

Abstract: An apparatus and method for aligning two coaxially coupled rotatable shafts. A servo operated multi axis positioning device is movable along a longitudinal axis parallel to the axis of the shafts, and movable vertically to position a laser range (LRF) adjacent to the two shafts, which measures the distance between the LRF and a spot on the shafts. A controller having a processor and memory communicates with the positioning device and the LRF to collect data at two axial positions on each shaft. At each position the LRF measures the distance to the shaft and stores the measurement and location data. The LRF is vertically repositioned and the measurement and storing steps are repeated over a scan distance sufficient to provide enough data to determine the location of the shaft center. The processor then calculates and compares the shafts centerlines and determines the necessary adjustments needed to move the shafts into coaxial alignment.

Abstract: A heat pump HVAC system with an integrated pressure reducer which reduces the head pressure of the system when operating in the cooling mode and thus reduces compressor workload. The heat pump HVAC system includes a compressor for compressing a refrigerant, an exterior coil positioned outside of a building, an interior coil positioned within the building, and a reversing valve for changing the flow direction of refrigerant in the refrigerant circuit. A heat exchanger is provided between the outlet of the exterior coil and the thermal expansion valve. The heat exchanger cools the refrigerant flowing between the outlet of the exterior coil and thermal expansion valve using refrigerant exiting the interior coil.

Abstract: A heat pump HVAC system with an integrated pressure reducer which reduces the head pressure of the system when operating in the cooling mode and thus reduces compressor workload. The heat pump HVAC system includes a compressor for compressing a refrigerant, an exterior coil positioned outside of a building, an interior coil positioned within the building, and a reversing valve for changing the flow direction of refrigerant in the refrigerant circuit. A heat exchanger is provided between the outlet of the exterior coil and the thermal expansion valve. The heat exchanger cools the refrigerant flowing between the outlet of the exterior coil and thermal expansion valve using refrigerant exiting the interior coil.